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Merge branch 'nohz-for-tip-2' of git://github.com/fweisbec/linux-dynticks into timers/core

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This commit is contained in:
Thomas Gleixner 2012-06-11 20:11:29 +02:00
commit 924412f66f
116 changed files with 1368 additions and 630 deletions
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33
MAINTAINERS
View File

@ -1077,7 +1077,7 @@ F: drivers/media/video/s5p-fimc/
ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
M: Kyungmin Park <kyungmin.park@samsung.com>
M: Kamil Debski <k.debski@samsung.com>
M: Jeongtae Park <jtp.park@samsung.com>
M: Jeongtae Park <jtp.park@samsung.com>
L: linux-arm-kernel@lists.infradead.org
L: linux-media@vger.kernel.org
S: Maintained
@ -1743,10 +1743,10 @@ F: include/linux/can/platform/
CAPABILITIES
M: Serge Hallyn <serge.hallyn@canonical.com>
L: linux-security-module@vger.kernel.org
S: Supported
S: Supported
F: include/linux/capability.h
F: security/capability.c
F: security/commoncap.c
F: security/commoncap.c
F: kernel/capability.c
CELL BROADBAND ENGINE ARCHITECTURE
@ -2146,11 +2146,11 @@ S: Orphan
F: drivers/net/wan/pc300*
CYTTSP TOUCHSCREEN DRIVER
M: Javier Martinez Canillas <javier@dowhile0.org>
L: linux-input@vger.kernel.org
S: Maintained
F: drivers/input/touchscreen/cyttsp*
F: include/linux/input/cyttsp.h
M: Javier Martinez Canillas <javier@dowhile0.org>
L: linux-input@vger.kernel.org
S: Maintained
F: drivers/input/touchscreen/cyttsp*
F: include/linux/input/cyttsp.h
DAMA SLAVE for AX.25
M: Joerg Reuter <jreuter@yaina.de>
@ -2270,7 +2270,7 @@ F: include/linux/device-mapper.h
F: include/linux/dm-*.h
DIOLAN U2C-12 I2C DRIVER
M: Guenter Roeck <guenter.roeck@ericsson.com>
M: Guenter Roeck <linux@roeck-us.net>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/busses/i2c-diolan-u2c.c
@ -3145,7 +3145,7 @@ F: drivers/tty/hvc/
HARDWARE MONITORING
M: Jean Delvare <khali@linux-fr.org>
M: Guenter Roeck <guenter.roeck@ericsson.com>
M: Guenter Roeck <linux@roeck-us.net>
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.org/
T: quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-hwmon/
@ -4420,6 +4420,13 @@ S: Orphan
F: drivers/video/matrox/matroxfb_*
F: include/linux/matroxfb.h
MAX16065 HARDWARE MONITOR DRIVER
M: Guenter Roeck <linux@roeck-us.net>
L: lm-sensors@lm-sensors.org
S: Maintained
F: Documentation/hwmon/max16065
F: drivers/hwmon/max16065.c
MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
M: "Hans J. Koch" <hjk@hansjkoch.de>
L: lm-sensors@lm-sensors.org
@ -5158,7 +5165,7 @@ F: drivers/leds/leds-pca9532.c
F: include/linux/leds-pca9532.h
PCA9541 I2C BUS MASTER SELECTOR DRIVER
M: Guenter Roeck <guenter.roeck@ericsson.com>
M: Guenter Roeck <linux@roeck-us.net>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/muxes/i2c-mux-pca9541.c
@ -5178,7 +5185,7 @@ S: Maintained
F: drivers/firmware/pcdp.*
PCI ERROR RECOVERY
M: Linas Vepstas <linasvepstas@gmail.com>
M: Linas Vepstas <linasvepstas@gmail.com>
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/PCI/pci-error-recovery.txt
@ -5308,7 +5315,7 @@ F: drivers/video/fb-puv3.c
F: drivers/rtc/rtc-puv3.c
PMBUS HARDWARE MONITORING DRIVERS
M: Guenter Roeck <guenter.roeck@ericsson.com>
M: Guenter Roeck <linux@roeck-us.net>
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.org/
W: http://www.roeck-us.net/linux/drivers/

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 5
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc2
NAME = Saber-toothed Squirrel
# *DOCUMENTATION*

3
arch/parisc/Makefile
View File

@ -21,6 +21,7 @@ KBUILD_DEFCONFIG := default_defconfig
NM = sh $(srctree)/arch/parisc/nm
CHECKFLAGS += -D__hppa__=1
LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
MACHINE := $(shell uname -m)
ifeq ($(MACHINE),parisc*)
@ -79,7 +80,7 @@ kernel-y := mm/ kernel/ math-emu/
kernel-$(CONFIG_HPUX) += hpux/
core-y += $(addprefix arch/parisc/, $(kernel-y))
libs-y += arch/parisc/lib/ `$(CC) -print-libgcc-file-name`
libs-y += arch/parisc/lib/ $(LIBGCC)
drivers-$(CONFIG_OPROFILE) += arch/parisc/oprofile/

1
arch/parisc/include/asm/Kbuild
View File

@ -1,3 +1,4 @@
include include/asm-generic/Kbuild.asm
header-y += pdc.h
generic-y += word-at-a-time.h

2
arch/parisc/include/asm/bug.h
View File

@ -1,6 +1,8 @@
#ifndef _PARISC_BUG_H
#define _PARISC_BUG_H
#include <linux/kernel.h> /* for BUGFLAG_TAINT */
/*
* Tell the user there is some problem.
* The offending file and line are encoded in the __bug_table section.

11
arch/powerpc/kernel/module_32.c
View File

@ -176,8 +176,8 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr,
static inline int entry_matches(struct ppc_plt_entry *entry, Elf32_Addr val)
{
if (entry->jump[0] == 0x3d600000 + ((val + 0x8000) >> 16)
&& entry->jump[1] == 0x396b0000 + (val & 0xffff))
if (entry->jump[0] == 0x3d800000 + ((val + 0x8000) >> 16)
&& entry->jump[1] == 0x398c0000 + (val & 0xffff))
return 1;
return 0;
}
@ -204,10 +204,9 @@ static uint32_t do_plt_call(void *location,
entry++;
}
/* Stolen from Paul Mackerras as well... */
entry->jump[0] = 0x3d600000+((val+0x8000)>>16); /* lis r11,sym@ha */
entry->jump[1] = 0x396b0000 + (val&0xffff); /* addi r11,r11,sym@l*/
entry->jump[2] = 0x7d6903a6; /* mtctr r11 */
entry->jump[0] = 0x3d800000+((val+0x8000)>>16); /* lis r12,sym@ha */
entry->jump[1] = 0x398c0000 + (val&0xffff); /* addi r12,r12,sym@l*/
entry->jump[2] = 0x7d8903a6; /* mtctr r12 */
entry->jump[3] = 0x4e800420; /* bctr */
DEBUGP("Initialized plt for 0x%x at %p\n", val, entry);

14
arch/powerpc/kernel/time.c
View File

@ -475,6 +475,7 @@ void timer_interrupt(struct pt_regs * regs)
struct pt_regs *old_regs;
u64 *next_tb = &__get_cpu_var(decrementers_next_tb);
struct clock_event_device *evt = &__get_cpu_var(decrementers);
u64 now;
/* Ensure a positive value is written to the decrementer, or else
* some CPUs will continue to take decrementer exceptions.
@ -509,9 +510,16 @@ void timer_interrupt(struct pt_regs * regs)
irq_work_run();
}
*next_tb = ~(u64)0;
if (evt->event_handler)
evt->event_handler(evt);
now = get_tb_or_rtc();
if (now >= *next_tb) {
*next_tb = ~(u64)0;
if (evt->event_handler)
evt->event_handler(evt);
} else {
now = *next_tb - now;
if (now <= DECREMENTER_MAX)
set_dec((int)now);
}
#ifdef CONFIG_PPC64
/* collect purr register values often, for accurate calculations */

5
arch/tile/include/asm/thread_info.h
View File

@ -91,11 +91,6 @@ extern void smp_nap(void);
/* Enable interrupts racelessly and nap forever: helper for cpu_idle(). */
extern void _cpu_idle(void);
/* Switch boot idle thread to a freshly-allocated stack and free old stack. */
extern void cpu_idle_on_new_stack(struct thread_info *old_ti,
unsigned long new_sp,
unsigned long new_ss10);
#else /* __ASSEMBLY__ */
/*

14
arch/tile/kernel/entry.S
View File

@ -68,20 +68,6 @@ STD_ENTRY(KBacktraceIterator_init_current)
jrp lr /* keep backtracer happy */
STD_ENDPROC(KBacktraceIterator_init_current)
/*
* Reset our stack to r1/r2 (sp and ksp0+cpu respectively), then
* free the old stack (passed in r0) and re-invoke cpu_idle().
* We update sp and ksp0 simultaneously to avoid backtracer warnings.
*/
STD_ENTRY(cpu_idle_on_new_stack)
{
move sp, r1
mtspr SPR_SYSTEM_SAVE_K_0, r2
}
jal free_thread_info
j cpu_idle
STD_ENDPROC(cpu_idle_on_new_stack)
/* Loop forever on a nap during SMP boot. */
STD_ENTRY(smp_nap)
nap

1
arch/tile/kernel/setup.c
View File

@ -29,6 +29,7 @@
#include <linux/smp.h>
#include <linux/timex.h>
#include <linux/hugetlb.h>
#include <linux/start_kernel.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/cacheflush.h>

42
arch/x86/boot/header.S
View File

@ -94,10 +94,10 @@ bs_die:
.section ".bsdata", "a"
bugger_off_msg:
.ascii "Direct booting from floppy is no longer supported.\r\n"
.ascii "Please use a boot loader program instead.\r\n"
.ascii "Direct floppy boot is not supported. "
.ascii "Use a boot loader program instead.\r\n"
.ascii "\n"
.ascii "Remove disk and press any key to reboot . . .\r\n"
.ascii "Remove disk and press any key to reboot ...\r\n"
.byte 0
#ifdef CONFIG_EFI_STUB
@ -111,7 +111,7 @@ coff_header:
#else
.word 0x8664 # x86-64
#endif
.word 2 # nr_sections
.word 3 # nr_sections
.long 0 # TimeDateStamp
.long 0 # PointerToSymbolTable
.long 1 # NumberOfSymbols
@ -158,8 +158,8 @@ extra_header_fields:
#else
.quad 0 # ImageBase
#endif
.long 0x1000 # SectionAlignment
.long 0x200 # FileAlignment
.long 0x20 # SectionAlignment
.long 0x20 # FileAlignment
.word 0 # MajorOperatingSystemVersion
.word 0 # MinorOperatingSystemVersion
.word 0 # MajorImageVersion
@ -200,8 +200,10 @@ extra_header_fields:
# Section table
section_table:
.ascii ".text"
.byte 0
#
# The offset & size fields are filled in by build.c.
#
.ascii ".setup"
.byte 0
.byte 0
.long 0
@ -217,9 +219,8 @@ section_table:
#
# The EFI application loader requires a relocation section
# because EFI applications must be relocatable. But since
# we don't need the loader to fixup any relocs for us, we
# just create an empty (zero-length) .reloc section header.
# because EFI applications must be relocatable. The .reloc
# offset & size fields are filled in by build.c.
#
.ascii ".reloc"
.byte 0
@ -233,6 +234,25 @@ section_table:
.word 0 # NumberOfRelocations
.word 0 # NumberOfLineNumbers
.long 0x42100040 # Characteristics (section flags)
#
# The offset & size fields are filled in by build.c.
#
.ascii ".text"
.byte 0
.byte 0
.byte 0
.long 0
.long 0x0 # startup_{32,64}
.long 0 # Size of initialized data
# on disk
.long 0x0 # startup_{32,64}
.long 0 # PointerToRelocations
.long 0 # PointerToLineNumbers
.word 0 # NumberOfRelocations
.word 0 # NumberOfLineNumbers
.long 0x60500020 # Characteristics (section flags)
#endif /* CONFIG_EFI_STUB */
# Kernel attributes; used by setup. This is part 1 of the

172
arch/x86/boot/tools/build.c
View File

@ -50,6 +50,8 @@ typedef unsigned int u32;
u8 buf[SETUP_SECT_MAX*512];
int is_big_kernel;
#define PECOFF_RELOC_RESERVE 0x20
/*----------------------------------------------------------------------*/
static const u32 crctab32[] = {
@ -133,11 +135,103 @@ static void usage(void)
die("Usage: build setup system [> image]");
}
#ifdef CONFIG_EFI_STUB
static void update_pecoff_section_header(char *section_name, u32 offset, u32 size)
{
unsigned int pe_header;
unsigned short num_sections;
u8 *section;
pe_header = get_unaligned_le32(&buf[0x3c]);
num_sections = get_unaligned_le16(&buf[pe_header + 6]);
#ifdef CONFIG_X86_32
section = &buf[pe_header + 0xa8];
#else
section = &buf[pe_header + 0xb8];
#endif
while (num_sections > 0) {
if (strncmp((char*)section, section_name, 8) == 0) {
/* section header size field */
put_unaligned_le32(size, section + 0x8);
/* section header vma field */
put_unaligned_le32(offset, section + 0xc);
/* section header 'size of initialised data' field */
put_unaligned_le32(size, section + 0x10);
/* section header 'file offset' field */
put_unaligned_le32(offset, section + 0x14);
break;
}
section += 0x28;
num_sections--;
}
}
static void update_pecoff_setup_and_reloc(unsigned int size)
{
u32 setup_offset = 0x200;
u32 reloc_offset = size - PECOFF_RELOC_RESERVE;
u32 setup_size = reloc_offset - setup_offset;
update_pecoff_section_header(".setup", setup_offset, setup_size);
update_pecoff_section_header(".reloc", reloc_offset, PECOFF_RELOC_RESERVE);
/*
* Modify .reloc section contents with a single entry. The
* relocation is applied to offset 10 of the relocation section.
*/
put_unaligned_le32(reloc_offset + 10, &buf[reloc_offset]);
put_unaligned_le32(10, &buf[reloc_offset + 4]);
}
static void update_pecoff_text(unsigned int text_start, unsigned int file_sz)
{
unsigned int pe_header;
unsigned int text_sz = file_sz - text_start;
pe_header = get_unaligned_le32(&buf[0x3c]);
/* Size of image */
put_unaligned_le32(file_sz, &buf[pe_header + 0x50]);
/*
* Size of code: Subtract the size of the first sector (512 bytes)
* which includes the header.
*/
put_unaligned_le32(file_sz - 512, &buf[pe_header + 0x1c]);
#ifdef CONFIG_X86_32
/*
* Address of entry point.
*
* The EFI stub entry point is +16 bytes from the start of
* the .text section.
*/
put_unaligned_le32(text_start + 16, &buf[pe_header + 0x28]);
#else
/*
* Address of entry point. startup_32 is at the beginning and
* the 64-bit entry point (startup_64) is always 512 bytes
* after. The EFI stub entry point is 16 bytes after that, as
* the first instruction allows legacy loaders to jump over
* the EFI stub initialisation
*/
put_unaligned_le32(text_start + 528, &buf[pe_header + 0x28]);
#endif /* CONFIG_X86_32 */
update_pecoff_section_header(".text", text_start, text_sz);
}
#endif /* CONFIG_EFI_STUB */
int main(int argc, char ** argv)
{
#ifdef CONFIG_EFI_STUB
unsigned int file_sz, pe_header;
#endif
unsigned int i, sz, setup_sectors;
int c;
u32 sys_size;
@ -163,6 +257,12 @@ int main(int argc, char ** argv)
die("Boot block hasn't got boot flag (0xAA55)");
fclose(file);
#ifdef CONFIG_EFI_STUB
/* Reserve 0x20 bytes for .reloc section */
memset(buf+c, 0, PECOFF_RELOC_RESERVE);
c += PECOFF_RELOC_RESERVE;
#endif
/* Pad unused space with zeros */
setup_sectors = (c + 511) / 512;
if (setup_sectors < SETUP_SECT_MIN)
@ -170,6 +270,10 @@ int main(int argc, char ** argv)
i = setup_sectors*512;
memset(buf+c, 0, i-c);
#ifdef CONFIG_EFI_STUB
update_pecoff_setup_and_reloc(i);
#endif
/* Set the default root device */
put_unaligned_le16(DEFAULT_ROOT_DEV, &buf[508]);
@ -194,66 +298,8 @@ int main(int argc, char ** argv)
put_unaligned_le32(sys_size, &buf[0x1f4]);
#ifdef CONFIG_EFI_STUB
file_sz = sz + i + ((sys_size * 16) - sz);
pe_header = get_unaligned_le32(&buf[0x3c]);
/* Size of image */
put_unaligned_le32(file_sz, &buf[pe_header + 0x50]);
/*
* Subtract the size of the first section (512 bytes) which
* includes the header and .reloc section. The remaining size
* is that of the .text section.
*/
file_sz -= 512;
/* Size of code */
put_unaligned_le32(file_sz, &buf[pe_header + 0x1c]);
#ifdef CONFIG_X86_32
/*
* Address of entry point.
*
* The EFI stub entry point is +16 bytes from the start of
* the .text section.
*/
put_unaligned_le32(i + 16, &buf[pe_header + 0x28]);
/* .text size */
put_unaligned_le32(file_sz, &buf[pe_header + 0xb0]);
/* .text vma */
put_unaligned_le32(0x200, &buf[pe_header + 0xb4]);
/* .text size of initialised data */
put_unaligned_le32(file_sz, &buf[pe_header + 0xb8]);
/* .text file offset */
put_unaligned_le32(0x200, &buf[pe_header + 0xbc]);
#else
/*
* Address of entry point. startup_32 is at the beginning and
* the 64-bit entry point (startup_64) is always 512 bytes
* after. The EFI stub entry point is 16 bytes after that, as
* the first instruction allows legacy loaders to jump over
* the EFI stub initialisation
*/
put_unaligned_le32(i + 528, &buf[pe_header + 0x28]);
/* .text size */
put_unaligned_le32(file_sz, &buf[pe_header + 0xc0]);
/* .text vma */
put_unaligned_le32(0x200, &buf[pe_header + 0xc4]);
/* .text size of initialised data */
put_unaligned_le32(file_sz, &buf[pe_header + 0xc8]);
/* .text file offset */
put_unaligned_le32(0x200, &buf[pe_header + 0xcc]);
#endif /* CONFIG_X86_32 */
#endif /* CONFIG_EFI_STUB */
update_pecoff_text(setup_sectors * 512, sz + i + ((sys_size * 16) - sz));
#endif
crc = partial_crc32(buf, i, crc);
if (fwrite(buf, 1, i, stdout) != i)

14
arch/x86/include/asm/nmi.h
View File

@ -54,6 +54,20 @@ struct nmiaction {
__register_nmi_handler((t), &fn##_na); \
})
/*
* For special handlers that register/unregister in the
* init section only. This should be considered rare.
*/
#define register_nmi_handler_initonly(t, fn, fg, n) \
({ \
static struct nmiaction fn##_na __initdata = { \
.handler = (fn), \
.name = (n), \
.flags = (fg), \
}; \
__register_nmi_handler((t), &fn##_na); \
})
int __register_nmi_handler(unsigned int, struct nmiaction *);
void unregister_nmi_handler(unsigned int, const char *);

12
arch/x86/include/asm/uaccess.h
View File

@ -33,9 +33,8 @@
#define segment_eq(a, b) ((a).seg == (b).seg)
#define user_addr_max() (current_thread_info()->addr_limit.seg)
#define __addr_ok(addr) \
((unsigned long __force)(addr) < \
(current_thread_info()->addr_limit.seg))
#define __addr_ok(addr) \
((unsigned long __force)(addr) < user_addr_max())
/*
* Test whether a block of memory is a valid user space address.
@ -47,14 +46,14 @@
* This needs 33-bit (65-bit for x86_64) arithmetic. We have a carry...
*/
#define __range_not_ok(addr, size) \
#define __range_not_ok(addr, size, limit) \
({ \
unsigned long flag, roksum; \
__chk_user_ptr(addr); \
asm("add %3,%1 ; sbb %0,%0 ; cmp %1,%4 ; sbb $0,%0" \
: "=&r" (flag), "=r" (roksum) \
: "1" (addr), "g" ((long)(size)), \
"rm" (current_thread_info()->addr_limit.seg)); \
"rm" (limit)); \
flag; \
})
@ -77,7 +76,8 @@
* checks that the pointer is in the user space range - after calling
* this function, memory access functions may still return -EFAULT.
*/
#define access_ok(type, addr, size) (likely(__range_not_ok(addr, size) == 0))
#define access_ok(type, addr, size) \
(likely(__range_not_ok(addr, size, user_addr_max()) == 0))
/*
* The exception table consists of pairs of addresses relative to the

1
arch/x86/include/asm/uv/uv_bau.h
View File

@ -149,7 +149,6 @@
/* 4 bits of software ack period */
#define UV2_ACK_MASK 0x7UL
#define UV2_ACK_UNITS_SHFT 3
#define UV2_LEG_SHFT UV2H_LB_BAU_MISC_CONTROL_USE_LEGACY_DESCRIPTOR_FORMATS_SHFT
#define UV2_EXT_SHFT UV2H_LB_BAU_MISC_CONTROL_ENABLE_EXTENDED_SB_STATUS_SHFT
/*

6
arch/x86/kernel/aperture_64.c
View File

@ -20,7 +20,6 @@
#include <linux/bitops.h>
#include <linux/ioport.h>
#include <linux/suspend.h>
#include <linux/kmemleak.h>
#include <asm/e820.h>
#include <asm/io.h>
#include <asm/iommu.h>
@ -95,11 +94,6 @@ static u32 __init allocate_aperture(void)
return 0;
}
memblock_reserve(addr, aper_size);
/*
* Kmemleak should not scan this block as it may not be mapped via the
* kernel direct mapping.
*/
kmemleak_ignore(phys_to_virt(addr));
printk(KERN_INFO "Mapping aperture over %d KB of RAM @ %lx\n",
aper_size >> 10, addr);
insert_aperture_resource((u32)addr, aper_size);

4
arch/x86/kernel/apic/io_apic.c
View File

@ -1195,7 +1195,7 @@ static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
BUG_ON(!cfg->vector);
vector = cfg->vector;
for_each_cpu_and(cpu, cfg->domain, cpu_online_mask)
for_each_cpu(cpu, cfg->domain)
per_cpu(vector_irq, cpu)[vector] = -1;
cfg->vector = 0;
@ -1203,7 +1203,7 @@ static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
if (likely(!cfg->move_in_progress))
return;
for_each_cpu_and(cpu, cfg->old_domain, cpu_online_mask) {
for_each_cpu(cpu, cfg->old_domain) {
for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS;
vector++) {
if (per_cpu(vector_irq, cpu)[vector] != irq)

2
arch/x86/kernel/cpu/mcheck/mce.c
View File

@ -1557,7 +1557,7 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
static void __mcheck_cpu_init_timer(void)
{
struct timer_list *t = &__get_cpu_var(mce_timer);
unsigned long iv = __this_cpu_read(mce_next_interval);
unsigned long iv = check_interval * HZ;
setup_timer(t, mce_timer_fn, smp_processor_id());

11
arch/x86/kernel/cpu/perf_event.c
View File

@ -1496,6 +1496,7 @@ static struct cpu_hw_events *allocate_fake_cpuc(void)
if (!cpuc->shared_regs)
goto error;
}
cpuc->is_fake = 1;
return cpuc;
error:
free_fake_cpuc(cpuc);
@ -1756,6 +1757,12 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
dump_trace(NULL, regs, NULL, 0, &backtrace_ops, entry);
}
static inline int
valid_user_frame(const void __user *fp, unsigned long size)
{
return (__range_not_ok(fp, size, TASK_SIZE) == 0);
}
#ifdef CONFIG_COMPAT
#include <asm/compat.h>
@ -1780,7 +1787,7 @@ perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry)
if (bytes != sizeof(frame))
break;
if (fp < compat_ptr(regs->sp))
if (!valid_user_frame(fp, sizeof(frame)))
break;
perf_callchain_store(entry, frame.return_address);
@ -1826,7 +1833,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
if (bytes != sizeof(frame))
break;
if ((unsigned long)fp < regs->sp)
if (!valid_user_frame(fp, sizeof(frame)))
break;
perf_callchain_store(entry, frame.return_address);

2
arch/x86/kernel/cpu/perf_event.h
View File

@ -117,6 +117,7 @@ struct cpu_hw_events {
struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
unsigned int group_flag;
int is_fake;
/*
* Intel DebugStore bits
@ -364,6 +365,7 @@ struct x86_pmu {
int pebs_record_size;
void (*drain_pebs)(struct pt_regs *regs);
struct event_constraint *pebs_constraints;
void (*pebs_aliases)(struct perf_event *event);
/*
* Intel LBR

145
arch/x86/kernel/cpu/perf_event_intel.c
View File

@ -1119,27 +1119,33 @@ intel_bts_constraints(struct perf_event *event)
return NULL;
}
static bool intel_try_alt_er(struct perf_event *event, int orig_idx)
static int intel_alt_er(int idx)
{
if (!(x86_pmu.er_flags & ERF_HAS_RSP_1))
return false;
return idx;
if (event->hw.extra_reg.idx == EXTRA_REG_RSP_0) {
event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
event->hw.config |= 0x01bb;
event->hw.extra_reg.idx = EXTRA_REG_RSP_1;
event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
} else if (event->hw.extra_reg.idx == EXTRA_REG_RSP_1) {
if (idx == EXTRA_REG_RSP_0)
return EXTRA_REG_RSP_1;
if (idx == EXTRA_REG_RSP_1)
return EXTRA_REG_RSP_0;
return idx;
}
static void intel_fixup_er(struct perf_event *event, int idx)
{
event->hw.extra_reg.idx = idx;
if (idx == EXTRA_REG_RSP_0) {
event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
event->hw.config |= 0x01b7;
event->hw.extra_reg.idx = EXTRA_REG_RSP_0;
event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
} else if (idx == EXTRA_REG_RSP_1) {
event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
event->hw.config |= 0x01bb;
event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
}
if (event->hw.extra_reg.idx == orig_idx)
return false;
return true;
}
/*
@ -1157,14 +1163,18 @@ __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
struct event_constraint *c = &emptyconstraint;
struct er_account *era;
unsigned long flags;
int orig_idx = reg->idx;
int idx = reg->idx;
/* already allocated shared msr */
if (reg->alloc)
/*
* reg->alloc can be set due to existing state, so for fake cpuc we
* need to ignore this, otherwise we might fail to allocate proper fake
* state for this extra reg constraint. Also see the comment below.
*/
if (reg->alloc && !cpuc->is_fake)
return NULL; /* call x86_get_event_constraint() */
again:
era = &cpuc->shared_regs->regs[reg->idx];
era = &cpuc->shared_regs->regs[idx];
/*
* we use spin_lock_irqsave() to avoid lockdep issues when
* passing a fake cpuc
@ -1173,6 +1183,29 @@ again:
if (!atomic_read(&era->ref) || era->config == reg->config) {
/*
* If its a fake cpuc -- as per validate_{group,event}() we
* shouldn't touch event state and we can avoid doing so
* since both will only call get_event_constraints() once
* on each event, this avoids the need for reg->alloc.
*
* Not doing the ER fixup will only result in era->reg being
* wrong, but since we won't actually try and program hardware
* this isn't a problem either.
*/
if (!cpuc->is_fake) {
if (idx != reg->idx)
intel_fixup_er(event, idx);
/*
* x86_schedule_events() can call get_event_constraints()
* multiple times on events in the case of incremental
* scheduling(). reg->alloc ensures we only do the ER
* allocation once.
*/
reg->alloc = 1;
}
/* lock in msr value */
era->config = reg->config;
era->reg = reg->reg;
@ -1180,17 +1213,17 @@ again:
/* one more user */
atomic_inc(&era->ref);
/* no need to reallocate during incremental event scheduling */
reg->alloc = 1;
/*
* need to call x86_get_event_constraint()
* to check if associated event has constraints
*/
c = NULL;
} else if (intel_try_alt_er(event, orig_idx)) {
raw_spin_unlock_irqrestore(&era->lock, flags);
goto again;
} else {
idx = intel_alt_er(idx);
if (idx != reg->idx) {
raw_spin_unlock_irqrestore(&era->lock, flags);
goto again;
}
}
raw_spin_unlock_irqrestore(&era->lock, flags);
@ -1204,11 +1237,14 @@ __intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
struct er_account *era;
/*
* only put constraint if extra reg was actually
* allocated. Also takes care of event which do
* not use an extra shared reg
* Only put constraint if extra reg was actually allocated. Also takes
* care of event which do not use an extra shared reg.
*
* Also, if this is a fake cpuc we shouldn't touch any event state
* (reg->alloc) and we don't care about leaving inconsistent cpuc state
* either since it'll be thrown out.
*/
if (!reg->alloc)
if (!reg->alloc || cpuc->is_fake)
return;
era = &cpuc->shared_regs->regs[reg->idx];
@ -1300,15 +1336,9 @@ static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
intel_put_shared_regs_event_constraints(cpuc, event);
}
static int intel_pmu_hw_config(struct perf_event *event)
static void intel_pebs_aliases_core2(struct perf_event *event)
{
int ret = x86_pmu_hw_config(event);
if (ret)
return ret;
if (event->attr.precise_ip &&
(event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
@ -1329,10 +1359,48 @@ static int intel_pmu_hw_config(struct perf_event *event)
*/
u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static void intel_pebs_aliases_snb(struct perf_event *event)
{
if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
/*
* Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
* (0x003c) so that we can use it with PEBS.
*
* The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
* PEBS capable. However we can use UOPS_RETIRED.ALL
* (0x01c2), which is a PEBS capable event, to get the same
* count.
*
* UOPS_RETIRED.ALL counts the number of cycles that retires
* CNTMASK micro-ops. By setting CNTMASK to a value (16)
* larger than the maximum number of micro-ops that can be
* retired per cycle (4) and then inverting the condition, we
* count all cycles that retire 16 or less micro-ops, which
* is every cycle.
*
* Thereby we gain a PEBS capable cycle counter.
*/
u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
event->hw.config = alt_config;
}
}
static int intel_pmu_hw_config(struct perf_event *event)
{
int ret = x86_pmu_hw_config(event);
if (ret)
return ret;
if (event->attr.precise_ip && x86_pmu.pebs_aliases)
x86_pmu.pebs_aliases(event);
if (intel_pmu_needs_lbr_smpl(event)) {
ret = intel_pmu_setup_lbr_filter(event);
@ -1607,6 +1675,7 @@ static __initconst const struct x86_pmu intel_pmu = {
.max_period = (1ULL << 31) - 1,
.get_event_constraints = intel_get_event_constraints,
.put_event_constraints = intel_put_event_constraints,
.pebs_aliases = intel_pebs_aliases_core2,
.format_attrs = intel_arch3_formats_attr,
@ -1840,8 +1909,9 @@ __init int intel_pmu_init(void)
break;
case 42: /* SandyBridge */
x86_add_quirk(intel_sandybridge_quirk);
case 45: /* SandyBridge, "Romely-EP" */
x86_add_quirk(intel_sandybridge_quirk);
case 58: /* IvyBridge */
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
@ -1849,6 +1919,7 @@ __init int intel_pmu_init(void)
x86_pmu.event_constraints = intel_snb_event_constraints;
x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
x86_pmu.extra_regs = intel_snb_extra_regs;
/* all extra regs are per-cpu when HT is on */
x86_pmu.er_flags |= ERF_HAS_RSP_1;

9
arch/x86/kernel/cpu/perf_event_intel_ds.c
View File

@ -400,14 +400,7 @@ struct event_constraint intel_snb_pebs_event_constraints[] = {
INTEL_EVENT_CONSTRAINT(0xc4, 0xf), /* BR_INST_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xc5, 0xf), /* BR_MISP_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.* */
INTEL_UEVENT_CONSTRAINT(0x11d0, 0xf), /* MEM_UOP_RETIRED.STLB_MISS_LOADS */
INTEL_UEVENT_CONSTRAINT(0x12d0, 0xf), /* MEM_UOP_RETIRED.STLB_MISS_STORES */
INTEL_UEVENT_CONSTRAINT(0x21d0, 0xf), /* MEM_UOP_RETIRED.LOCK_LOADS */
INTEL_UEVENT_CONSTRAINT(0x22d0, 0xf), /* MEM_UOP_RETIRED.LOCK_STORES */
INTEL_UEVENT_CONSTRAINT(0x41d0, 0xf), /* MEM_UOP_RETIRED.SPLIT_LOADS */
INTEL_UEVENT_CONSTRAINT(0x42d0, 0xf), /* MEM_UOP_RETIRED.SPLIT_STORES */
INTEL_UEVENT_CONSTRAINT(0x81d0, 0xf), /* MEM_UOP_RETIRED.ANY_LOADS */
INTEL_UEVENT_CONSTRAINT(0x82d0, 0xf), /* MEM_UOP_RETIRED.ANY_STORES */
INTEL_EVENT_CONSTRAINT(0xd0, 0xf), /* MEM_UOP_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
INTEL_EVENT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
INTEL_UEVENT_CONSTRAINT(0x02d4, 0xf), /* MEM_LOAD_UOPS_MISC_RETIRED.LLC_MISS */

4
arch/x86/kernel/nmi_selftest.c
View File

@ -42,7 +42,7 @@ static int __init nmi_unk_cb(unsigned int val, struct pt_regs *regs)
static void __init init_nmi_testsuite(void)
{
/* trap all the unknown NMIs we may generate */
register_nmi_handler(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk");
register_nmi_handler_initonly(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk");
}
static void __init cleanup_nmi_testsuite(void)
@ -64,7 +64,7 @@ static void __init test_nmi_ipi(struct cpumask *mask)
{
unsigned long timeout;
if (register_nmi_handler(NMI_LOCAL, test_nmi_ipi_callback,
if (register_nmi_handler_initonly(NMI_LOCAL, test_nmi_ipi_callback,
NMI_FLAG_FIRST, "nmi_selftest")) {
nmi_fail = FAILURE;
return;

6
arch/x86/kernel/reboot.c
View File

@ -639,9 +639,11 @@ void native_machine_shutdown(void)
set_cpus_allowed_ptr(current, cpumask_of(reboot_cpu_id));
/*
* O.K Now that I'm on the appropriate processor,
* stop all of the others.
* O.K Now that I'm on the appropriate processor, stop all of the
* others. Also disable the local irq to not receive the per-cpu
* timer interrupt which may trigger scheduler's load balance.
*/
local_irq_disable();
stop_other_cpus();
#endif

9
arch/x86/kernel/smpboot.c
View File

@ -382,6 +382,15 @@ void __cpuinit set_cpu_sibling_map(int cpu)
if ((i == cpu) || (has_mc && match_llc(c, o)))
link_mask(llc_shared, cpu, i);
}
/*
* This needs a separate iteration over the cpus because we rely on all
* cpu_sibling_mask links to be set-up.
*/
for_each_cpu(i, cpu_sibling_setup_mask) {
o = &cpu_data(i);
if ((i == cpu) || (has_mc && match_mc(c, o))) {
link_mask(core, cpu, i);

4
arch/x86/lib/usercopy.c
View File

@ -8,6 +8,7 @@
#include <linux/module.h>
#include <asm/word-at-a-time.h>
#include <linux/sched.h>
/*
* best effort, GUP based copy_from_user() that is NMI-safe
@ -21,6 +22,9 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
void *map;
int ret;
if (__range_not_ok(from, n, TASK_SIZE) == 0)
return len;
do {
ret = __get_user_pages_fast(addr, 1, 0, &page);
if (!ret)

8
arch/x86/lib/x86-opcode-map.txt
View File

@ -28,7 +28,7 @@
# - (66): the last prefix is 0x66
# - (F3): the last prefix is 0xF3
# - (F2): the last prefix is 0xF2
#
# - (!F3) : the last prefix is not 0xF3 (including non-last prefix case)
Table: one byte opcode
Referrer:
@ -515,12 +515,12 @@ b4: LFS Gv,Mp
b5: LGS Gv,Mp
b6: MOVZX Gv,Eb
b7: MOVZX Gv,Ew
b8: JMPE | POPCNT Gv,Ev (F3)
b8: JMPE (!F3) | POPCNT Gv,Ev (F3)
b9: Grp10 (1A)
ba: Grp8 Ev,Ib (1A)
bb: BTC Ev,Gv
bc: BSF Gv,Ev | TZCNT Gv,Ev (F3)
bd: BSR Gv,Ev | LZCNT Gv,Ev (F3)
bc: BSF Gv,Ev (!F3) | TZCNT Gv,Ev (F3)
bd: BSR Gv,Ev (!F3) | LZCNT Gv,Ev (F3)
be: MOVSX Gv,Eb
bf: MOVSX Gv,Ew
# 0x0f 0xc0-0xcf

3
arch/x86/mm/init.c
View File

@ -62,7 +62,8 @@ static void __init find_early_table_space(struct map_range *mr, unsigned long en
extra += PMD_SIZE;
#endif
/* The first 2/4M doesn't use large pages. */
extra += mr->end - mr->start;
if (mr->start < PMD_SIZE)
extra += mr->end - mr->start;
ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
} else

2
arch/x86/mm/srat.c
View File

@ -176,6 +176,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
return;
}
node_set(node, numa_nodes_parsed);
printk(KERN_INFO "SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n",
node, pxm,
(unsigned long long) start, (unsigned long long) end - 1);

2
arch/x86/platform/mrst/mrst.c
View File

@ -782,7 +782,7 @@ BLOCKING_NOTIFIER_HEAD(intel_scu_notifier);
EXPORT_SYMBOL_GPL(intel_scu_notifier);
/* Called by IPC driver */
void intel_scu_devices_create(void)
void __devinit intel_scu_devices_create(void)
{
int i;

1
arch/x86/platform/uv/tlb_uv.c
View File

@ -1295,7 +1295,6 @@ static void __init enable_timeouts(void)
*/
mmr_image |= (1L << SOFTACK_MSHIFT);
if (is_uv2_hub()) {
mmr_image &= ~(1L << UV2_LEG_SHFT);
mmr_image |= (1L << UV2_EXT_SHFT);
}
write_mmr_misc_control(pnode, mmr_image);

14
arch/x86/tools/gen-insn-attr-x86.awk
View File

@ -66,9 +66,10 @@ BEGIN {
rex_expr = "^REX(\\.[XRWB]+)*"
fpu_expr = "^ESC" # TODO
lprefix1_expr = "\\(66\\)"
lprefix1_expr = "\\((66|!F3)\\)"
lprefix2_expr = "\\(F3\\)"
lprefix3_expr = "\\(F2\\)"
lprefix3_expr = "\\((F2|!F3)\\)"
lprefix_expr = "\\((66|F2|F3)\\)"
max_lprefix = 4
# All opcodes starting with lower-case 'v' or with (v1) superscript
@ -333,13 +334,16 @@ function convert_operands(count,opnd, i,j,imm,mod)
if (match(ext, lprefix1_expr)) {
lptable1[idx] = add_flags(lptable1[idx],flags)
variant = "INAT_VARIANT"
} else if (match(ext, lprefix2_expr)) {
}
if (match(ext, lprefix2_expr)) {
lptable2[idx] = add_flags(lptable2[idx],flags)
variant = "INAT_VARIANT"
} else if (match(ext, lprefix3_expr)) {
}
if (match(ext, lprefix3_expr)) {
lptable3[idx] = add_flags(lptable3[idx],flags)
variant = "INAT_VARIANT"
} else {
}
if (!match(ext, lprefix_expr)){
table[idx] = add_flags(table[idx],flags)
}
}

2
drivers/acpi/Kconfig
View File

@ -208,7 +208,7 @@ config ACPI_IPMI
config ACPI_HOTPLUG_CPU
bool
depends on ACPI_PROCESSOR && HOTPLUG_CPU
depends on EXPERIMENTAL && ACPI_PROCESSOR && HOTPLUG_CPU
select ACPI_CONTAINER
default y

10
drivers/acpi/battery.c
View File

@ -643,11 +643,19 @@ static int acpi_battery_update(struct acpi_battery *battery)
static void acpi_battery_refresh(struct acpi_battery *battery)
{
int power_unit;
if (!battery->bat.dev)
return;
power_unit = battery->power_unit;
acpi_battery_get_info(battery);
/* The battery may have changed its reporting units. */
if (power_unit == battery->power_unit)
return;
/* The battery has changed its reporting units. */
sysfs_remove_battery(battery);
sysfs_add_battery(battery);
}

30
drivers/acpi/processor_perflib.c
View File

@ -333,6 +333,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
struct acpi_buffer state = { 0, NULL };
union acpi_object *pss = NULL;
int i;
int last_invalid = -1;
status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);
@ -394,14 +395,33 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
((u32)(px->core_frequency * 1000) !=
(px->core_frequency * 1000))) {
printk(KERN_ERR FW_BUG PREFIX
"Invalid BIOS _PSS frequency: 0x%llx MHz\n",
px->core_frequency);
result = -EFAULT;
kfree(pr->performance->states);
goto end;
"Invalid BIOS _PSS frequency found for processor %d: 0x%llx MHz\n",
pr->id, px->core_frequency);
if (last_invalid == -1)
last_invalid = i;
} else {
if (last_invalid != -1) {
/*
* Copy this valid entry over last_invalid entry
*/
memcpy(&(pr->performance->states[last_invalid]),
px, sizeof(struct acpi_processor_px));
++last_invalid;
}
}
}
if (last_invalid == 0) {
printk(KERN_ERR FW_BUG PREFIX
"No valid BIOS _PSS frequency found for processor %d\n", pr->id);
result = -EFAULT;
kfree(pr->performance->states);
pr->performance->states = NULL;
}
if (last_invalid > 0)
pr->performance->state_count = last_invalid;
end:
kfree(buffer.pointer);

33
drivers/acpi/video.c
View File

@ -1687,10 +1687,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
set_bit(KEY_DISPLAY_OFF, input->keybit);
error = input_register_device(input);
if (error)
goto err_stop_video;
printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
video->flags.multihead ? "yes" : "no",
@ -1701,12 +1697,16 @@ static int acpi_video_bus_add(struct acpi_device *device)
video->pm_nb.priority = 0;
error = register_pm_notifier(&video->pm_nb);
if (error)
goto err_unregister_input_dev;
goto err_stop_video;
error = input_register_device(input);
if (error)
goto err_unregister_pm_notifier;
return 0;
err_unregister_input_dev:
input_unregister_device(input);
err_unregister_pm_notifier:
unregister_pm_notifier(&video->pm_nb);
err_stop_video:
acpi_video_bus_stop_devices(video);
err_free_input_dev:
@ -1743,9 +1743,18 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
return 0;
}
static int __init is_i740(struct pci_dev *dev)
{
if (dev->device == 0x00D1)
return 1;
if (dev->device == 0x7000)
return 1;
return 0;
}
static int __init intel_opregion_present(void)
{
#if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE)
int opregion = 0;
struct pci_dev *dev = NULL;
u32 address;
@ -1754,13 +1763,15 @@ static int __init intel_opregion_present(void)
continue;
if (dev->vendor != PCI_VENDOR_ID_INTEL)
continue;
/* We don't want to poke around undefined i740 registers */
if (is_i740(dev))
continue;
pci_read_config_dword(dev, 0xfc, &address);
if (!address)
continue;
return 1;
opregion = 1;
}
#endif
return 0;
return opregion;
}
int acpi_video_register(void)

1
drivers/char/agp/intel-agp.c
View File

@ -898,6 +898,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
ID(PCI_DEVICE_ID_INTEL_B43_HB),
ID(PCI_DEVICE_ID_INTEL_B43_1_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_D2_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB),
ID(PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB),

1
drivers/char/agp/intel-agp.h
View File

@ -212,6 +212,7 @@
#define PCI_DEVICE_ID_INTEL_G41_HB 0x2E30
#define PCI_DEVICE_ID_INTEL_G41_IG 0x2E32
#define PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB 0x0040
#define PCI_DEVICE_ID_INTEL_IRONLAKE_D2_HB 0x0069
#define PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG 0x0042
#define PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB 0x0044
#define PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB 0x0062

4
drivers/gpu/drm/exynos/exynos_drm_drv.c
View File

@ -244,8 +244,8 @@ static const struct file_operations exynos_drm_driver_fops = {
};
static struct drm_driver exynos_drm_driver = {
.driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
.driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
DRIVER_GEM | DRIVER_PRIME,
.load = exynos_drm_load,
.unload = exynos_drm_unload,
.open = exynos_drm_open,

7
drivers/gpu/drm/exynos/exynos_drm_encoder.c
View File

@ -172,19 +172,12 @@ static void exynos_drm_encoder_commit(struct drm_encoder *encoder)
manager_ops->commit(manager->dev);
}
static struct drm_crtc *
exynos_drm_encoder_get_crtc(struct drm_encoder *encoder)
{
return encoder->crtc;
}
static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = {
.dpms = exynos_drm_encoder_dpms,
.mode_fixup = exynos_drm_encoder_mode_fixup,
.mode_set = exynos_drm_encoder_mode_set,
.prepare = exynos_drm_encoder_prepare,
.commit = exynos_drm_encoder_commit,
.get_crtc = exynos_drm_encoder_get_crtc,
};
static void exynos_drm_encoder_destroy(struct drm_encoder *encoder)

19
drivers/gpu/drm/exynos/exynos_drm_fb.c
View File

@ -51,11 +51,22 @@ struct exynos_drm_fb {
static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
{
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
unsigned int i;
DRM_DEBUG_KMS("%s\n", __FILE__);
drm_framebuffer_cleanup(fb);
for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) {
struct drm_gem_object *obj;
if (exynos_fb->exynos_gem_obj[i] == NULL)
continue;
obj = &exynos_fb->exynos_gem_obj[i]->base;
drm_gem_object_unreference_unlocked(obj);
}
kfree(exynos_fb);
exynos_fb = NULL;
}
@ -134,11 +145,11 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
return ERR_PTR(-ENOENT);
}
drm_gem_object_unreference_unlocked(obj);
fb = exynos_drm_framebuffer_init(dev, mode_cmd, obj);
if (IS_ERR(fb))
if (IS_ERR(fb)) {
drm_gem_object_unreference_unlocked(obj);
return fb;
}
exynos_fb = to_exynos_fb(fb);
nr = exynos_drm_format_num_buffers(fb->pixel_format);
@ -152,8 +163,6 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
return ERR_PTR(-ENOENT);
}
drm_gem_object_unreference_unlocked(obj);
exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj);
}

4
drivers/gpu/drm/exynos/exynos_drm_fb.h
View File

@ -31,10 +31,10 @@
static inline int exynos_drm_format_num_buffers(uint32_t format)
{
switch (format) {
case DRM_FORMAT_NV12M:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV12MT:
return 2;
case DRM_FORMAT_YUV420M:
case DRM_FORMAT_YUV420:
return 3;
default:
return 1;

9
drivers/gpu/drm/exynos/exynos_drm_gem.c
View File

@ -689,7 +689,6 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv,
struct drm_device *dev, uint32_t handle,
uint64_t *offset)
{
struct exynos_drm_gem_obj *exynos_gem_obj;
struct drm_gem_object *obj;
int ret = 0;
@ -710,15 +709,13 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv,
goto unlock;
}
exynos_gem_obj = to_exynos_gem_obj(obj);
if (!exynos_gem_obj->base.map_list.map) {
ret = drm_gem_create_mmap_offset(&exynos_gem_obj->base);
if (!obj->map_list.map) {
ret = drm_gem_create_mmap_offset(obj);
if (ret)
goto out;
}
*offset = (u64)exynos_gem_obj->base.map_list.hash.key << PAGE_SHIFT;
*offset = (u64)obj->map_list.hash.key << PAGE_SHIFT;
DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset);
out:

12
drivers/gpu/drm/exynos/exynos_mixer.c
View File

@ -365,7 +365,7 @@ static void vp_video_buffer(struct mixer_context *ctx, int win)
switch (win_data->pixel_format) {
case DRM_FORMAT_NV12MT:
tiled_mode = true;
case DRM_FORMAT_NV12M:
case DRM_FORMAT_NV12:
crcb_mode = false;
buf_num = 2;
break;
@ -601,18 +601,20 @@ static void mixer_win_reset(struct mixer_context *ctx)
mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
/* setting graphical layers */
val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
val |= MXR_GRP_CFG_WIN_BLEND_EN;
val |= MXR_GRP_CFG_BLEND_PRE_MUL;
val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
/* the same configuration for both layers */
mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
val |= MXR_GRP_CFG_BLEND_PRE_MUL;
val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
/* setting video layers */
val = MXR_GRP_CFG_ALPHA_VAL(0);
mixer_reg_write(res, MXR_VIDEO_CFG, val);
/* configuration of Video Processor Registers */
vp_win_reset(ctx);
vp_default_filter(res);

13
drivers/gpu/drm/i915/i915_drv.c
View File

@ -233,6 +233,7 @@ static const struct intel_device_info intel_sandybridge_d_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct intel_device_info intel_sandybridge_m_info = {
@ -243,6 +244,7 @@ static const struct intel_device_info intel_sandybridge_m_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct intel_device_info intel_ivybridge_d_info = {
@ -252,6 +254,7 @@ static const struct intel_device_info intel_ivybridge_d_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct intel_device_info intel_ivybridge_m_info = {
@ -262,6 +265,7 @@ static const struct intel_device_info intel_ivybridge_m_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct intel_device_info intel_valleyview_m_info = {
@ -289,6 +293,7 @@ static const struct intel_device_info intel_haswell_d_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct intel_device_info intel_haswell_m_info = {
@ -298,6 +303,7 @@ static const struct intel_device_info intel_haswell_m_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.has_force_wake = 1,
};
static const struct pci_device_id pciidlist[] = { /* aka */
@ -1139,10 +1145,9 @@ MODULE_LICENSE("GPL and additional rights");
/* We give fast paths for the really cool registers */
#define NEEDS_FORCE_WAKE(dev_priv, reg) \
(((dev_priv)->info->gen >= 6) && \
((reg) < 0x40000) && \
((reg) != FORCEWAKE)) && \
(!IS_VALLEYVIEW((dev_priv)->dev))
((HAS_FORCE_WAKE((dev_priv)->dev)) && \
((reg) < 0x40000) && \
((reg) != FORCEWAKE))
#define __i915_read(x, y) \
u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \

3
drivers/gpu/drm/i915/i915_drv.h
View File

@ -285,6 +285,7 @@ struct intel_device_info {
u8 is_ivybridge:1;
u8 is_valleyview:1;
u8 has_pch_split:1;
u8 has_force_wake:1;
u8 is_haswell:1;
u8 has_fbc:1;
u8 has_pipe_cxsr:1;
@ -1101,6 +1102,8 @@ struct drm_i915_file_private {
#define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
#define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
#define HAS_FORCE_WAKE(dev) (INTEL_INFO(dev)->has_force_wake)
#include "i915_trace.h"
/**

38
drivers/gpu/drm/i915/i915_irq.c
View File

@ -510,7 +510,7 @@ out:
return ret;
}
static void pch_irq_handler(struct drm_device *dev, u32 pch_iir)
static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
int pipe;
@ -550,6 +550,35 @@ static void pch_irq_handler(struct drm_device *dev, u32 pch_iir)
DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
}
static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
int pipe;
if (pch_iir & SDE_AUDIO_POWER_MASK_CPT)
DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
(pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
SDE_AUDIO_POWER_SHIFT_CPT);
if (pch_iir & SDE_AUX_MASK_CPT)
DRM_DEBUG_DRIVER("AUX channel interrupt\n");
if (pch_iir & SDE_GMBUS_CPT)
DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n");
if (pch_iir & SDE_AUDIO_CP_REQ_CPT)
DRM_DEBUG_DRIVER("Audio CP request interrupt\n");
if (pch_iir & SDE_AUDIO_CP_CHG_CPT)
DRM_DEBUG_DRIVER("Audio CP change interrupt\n");
if (pch_iir & SDE_FDI_MASK_CPT)
for_each_pipe(pipe)
DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
pipe_name(pipe),
I915_READ(FDI_RX_IIR(pipe)));
}
static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
@ -591,7 +620,7 @@ static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
if (pch_iir & SDE_HOTPLUG_MASK_CPT)
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
pch_irq_handler(dev, pch_iir);
cpt_irq_handler(dev, pch_iir);
/* clear PCH hotplug event before clear CPU irq */
I915_WRITE(SDEIIR, pch_iir);
@ -684,7 +713,10 @@ static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
if (de_iir & DE_PCH_EVENT) {
if (pch_iir & hotplug_mask)
queue_work(dev_priv->wq, &dev_priv->hotplug_work);
pch_irq_handler(dev, pch_iir);
if (HAS_PCH_CPT(dev))
cpt_irq_handler(dev, pch_iir);
else
ibx_irq_handler(dev, pch_iir);
}
if (de_iir & DE_PCU_EVENT) {

43
drivers/gpu/drm/i915/i915_reg.h
View File

@ -210,6 +210,14 @@
#define MI_DISPLAY_FLIP MI_INSTR(0x14, 2)
#define MI_DISPLAY_FLIP_I915 MI_INSTR(0x14, 1)
#define MI_DISPLAY_FLIP_PLANE(n) ((n) << 20)
/* IVB has funny definitions for which plane to flip. */
#define MI_DISPLAY_FLIP_IVB_PLANE_A (0 << 19)
#define MI_DISPLAY_FLIP_IVB_PLANE_B (1 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_A (2 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_B (3 << 19)
#define MI_DISPLAY_FLIP_IVB_PLANE_C (4 << 19)
#define MI_DISPLAY_FLIP_IVB_SPRITE_C (5 << 19)
#define MI_SET_CONTEXT MI_INSTR(0x18, 0)
#define MI_MM_SPACE_GTT (1<<8)
#define MI_MM_SPACE_PHYSICAL (0<<8)
@ -3313,7 +3321,7 @@
/* PCH */
/* south display engine interrupt */
/* south display engine interrupt: IBX */
#define SDE_AUDIO_POWER_D (1 << 27)
#define SDE_AUDIO_POWER_C (1 << 26)
#define SDE_AUDIO_POWER_B (1 << 25)
@ -3349,15 +3357,44 @@
#define SDE_TRANSA_CRC_ERR (1 << 1)
#define SDE_TRANSA_FIFO_UNDER (1 << 0)
#define SDE_TRANS_MASK (0x3f)
/* CPT */
#define SDE_CRT_HOTPLUG_CPT (1 << 19)
/* south display engine interrupt: CPT/PPT */
#define SDE_AUDIO_POWER_D_CPT (1 << 31)
#define SDE_AUDIO_POWER_C_CPT (1 << 30)
#define SDE_AUDIO_POWER_B_CPT (1 << 29)
#define SDE_AUDIO_POWER_SHIFT_CPT 29
#define SDE_AUDIO_POWER_MASK_CPT (7 << 29)
#define SDE_AUXD_CPT (1 << 27)
#define SDE_AUXC_CPT (1 << 26)
#define SDE_AUXB_CPT (1 << 25)
#define SDE_AUX_MASK_CPT (7 << 25)
#define SDE_PORTD_HOTPLUG_CPT (1 << 23)
#define SDE_PORTC_HOTPLUG_CPT (1 << 22)
#define SDE_PORTB_HOTPLUG_CPT (1 << 21)
#define SDE_CRT_HOTPLUG_CPT (1 << 19)
#define SDE_HOTPLUG_MASK_CPT (SDE_CRT_HOTPLUG_CPT | \
SDE_PORTD_HOTPLUG_CPT | \
SDE_PORTC_HOTPLUG_CPT | \
SDE_PORTB_HOTPLUG_CPT)
#define SDE_GMBUS_CPT (1 << 17)
#define SDE_AUDIO_CP_REQ_C_CPT (1 << 10)
#define SDE_AUDIO_CP_CHG_C_CPT (1 << 9)
#define SDE_FDI_RXC_CPT (1 << 8)
#define SDE_AUDIO_CP_REQ_B_CPT (1 << 6)
#define SDE_AUDIO_CP_CHG_B_CPT (1 << 5)
#define SDE_FDI_RXB_CPT (1 << 4)
#define SDE_AUDIO_CP_REQ_A_CPT (1 << 2)
#define SDE_AUDIO_CP_CHG_A_CPT (1 << 1)
#define SDE_FDI_RXA_CPT (1 << 0)
#define SDE_AUDIO_CP_REQ_CPT (SDE_AUDIO_CP_REQ_C_CPT | \
SDE_AUDIO_CP_REQ_B_CPT | \
SDE_AUDIO_CP_REQ_A_CPT)
#define SDE_AUDIO_CP_CHG_CPT (SDE_AUDIO_CP_CHG_C_CPT | \
SDE_AUDIO_CP_CHG_B_CPT | \
SDE_AUDIO_CP_CHG_A_CPT)
#define SDE_FDI_MASK_CPT (SDE_FDI_RXC_CPT | \
SDE_FDI_RXB_CPT | \
SDE_FDI_RXA_CPT)
#define SDEISR 0xc4000
#define SDEIMR 0xc4004

19
drivers/gpu/drm/i915/intel_display.c
View File

@ -6158,17 +6158,34 @@ static int intel_gen7_queue_flip(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
uint32_t plane_bit = 0;
int ret;
ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
if (ret)
goto err;
switch(intel_crtc->plane) {
case PLANE_A:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
break;
case PLANE_B:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
break;
case PLANE_C:
plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
break;
default:
WARN_ONCE(1, "unknown plane in flip command\n");
ret = -ENODEV;
goto err;
}
ret = intel_ring_begin(ring, 4);
if (ret)
goto err_unpin;
intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
intel_ring_emit(ring, (obj->gtt_offset));
intel_ring_emit(ring, (MI_NOOP));

21
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -266,10 +266,15 @@ u32 intel_ring_get_active_head(struct intel_ring_buffer *ring)
static int init_ring_common(struct intel_ring_buffer *ring)
{
drm_i915_private_t *dev_priv = ring->dev->dev_private;
struct drm_device *dev = ring->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj = ring->obj;
int ret = 0;
u32 head;
if (HAS_FORCE_WAKE(dev))
gen6_gt_force_wake_get(dev_priv);
/* Stop the ring if it's running. */
I915_WRITE_CTL(ring, 0);
I915_WRITE_HEAD(ring, 0);
@ -317,7 +322,8 @@ static int init_ring_common(struct intel_ring_buffer *ring)
I915_READ_HEAD(ring),
I915_READ_TAIL(ring),
I915_READ_START(ring));
return -EIO;
ret = -EIO;
goto out;
}
if (!drm_core_check_feature(ring->dev, DRIVER_MODESET))
@ -326,9 +332,14 @@ static int init_ring_common(struct intel_ring_buffer *ring)
ring->head = I915_READ_HEAD(ring);
ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->space = ring_space(ring);
ring->last_retired_head = -1;
}
return 0;
out:
if (HAS_FORCE_WAKE(dev))
gen6_gt_force_wake_put(dev_priv);
return ret;
}
static int
@ -987,6 +998,10 @@ static int intel_init_ring_buffer(struct drm_device *dev,
if (ret)
goto err_unref;
ret = i915_gem_object_set_to_gtt_domain(obj, true);
if (ret)
goto err_unpin;
ring->virtual_start = ioremap_wc(dev->agp->base + obj->gtt_offset,
ring->size);
if (ring->virtual_start == NULL) {

4
drivers/infiniband/hw/cxgb4/cm.c
View File

@ -1593,6 +1593,10 @@ static int import_ep(struct c4iw_ep *ep, __be32 peer_ip, struct dst_entry *dst,
struct net_device *pdev;
pdev = ip_dev_find(&init_net, peer_ip);
if (!pdev) {
err = -ENODEV;
goto out;
}
ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
n, pdev, 0);
if (!ep->l2t)

21
drivers/infiniband/hw/mlx4/main.c
View File

@ -140,7 +140,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
props->max_mr_size = ~0ull;
props->page_size_cap = dev->dev->caps.page_size_cap;
props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
props->max_qp_wr = dev->dev->caps.max_wqes;
props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
props->max_sge = min(dev->dev->caps.max_sq_sg,
dev->dev->caps.max_rq_sg);
props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
@ -1084,12 +1084,9 @@ static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
int total_eqs = 0;
int i, j, eq;
/* Init eq table */
ibdev->eq_table = NULL;
ibdev->eq_added = 0;
/* Legacy mode? */
if (dev->caps.comp_pool == 0)
/* Legacy mode or comp_pool is not large enough */
if (dev->caps.comp_pool == 0 ||
dev->caps.num_ports > dev->caps.comp_pool)
return;
eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
@ -1135,7 +1132,10 @@ static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
int i;
int total_eqs;
/* no additional eqs were added */
if (!ibdev->eq_table)
return;
/* Reset the advertised EQ number */
ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
@ -1148,12 +1148,7 @@ static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
mlx4_release_eq(dev, ibdev->eq_table[i]);
}
total_eqs = dev->caps.num_comp_vectors + ibdev->eq_added;
memset(ibdev->eq_table, 0, total_eqs * sizeof(int));
kfree(ibdev->eq_table);
ibdev->eq_table = NULL;
ibdev->eq_added = 0;
}
static void *mlx4_ib_add(struct mlx4_dev *dev)

8
drivers/infiniband/hw/mlx4/mlx4_ib.h
View File

@ -44,6 +44,14 @@
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
enum {
MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
MLX4_IB_MAX_HEADROOM = 2048
};
#define MLX4_IB_SQ_HEADROOM(shift) ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
#define MLX4_IB_SQ_MAX_SPARE (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
struct mlx4_ib_ucontext {
struct ib_ucontext ibucontext;
struct mlx4_uar uar;

21
drivers/infiniband/hw/mlx4/qp.c
View File

@ -310,8 +310,8 @@ static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
int is_user, int has_rq, struct mlx4_ib_qp *qp)
{
/* Sanity check RQ size before proceeding */
if (cap->max_recv_wr > dev->dev->caps.max_wqes ||
cap->max_recv_sge > dev->dev->caps.max_rq_sg)
if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE ||
cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg))
return -EINVAL;
if (!has_rq) {
@ -329,8 +329,17 @@ static int set_rq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
qp->rq.wqe_shift = ilog2(qp->rq.max_gs * sizeof (struct mlx4_wqe_data_seg));
}
cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt;
cap->max_recv_sge = qp->rq.max_gs;
/* leave userspace return values as they were, so as not to break ABI */
if (is_user) {
cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt;
cap->max_recv_sge = qp->rq.max_gs;
} else {
cap->max_recv_wr = qp->rq.max_post =
min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt);
cap->max_recv_sge = min(qp->rq.max_gs,
min(dev->dev->caps.max_sq_sg,
dev->dev->caps.max_rq_sg));
}
return 0;
}
@ -341,8 +350,8 @@ static int set_kernel_sq_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
int s;
/* Sanity check SQ size before proceeding */
if (cap->max_send_wr > dev->dev->caps.max_wqes ||
cap->max_send_sge > dev->dev->caps.max_sq_sg ||
if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) ||
cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) ||
cap->max_inline_data + send_wqe_overhead(type, qp->flags) +
sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz)
return -EINVAL;

1
drivers/infiniband/hw/ocrdma/ocrdma.h
View File

@ -231,7 +231,6 @@ struct ocrdma_qp_hwq_info {
u32 entry_size;
u32 max_cnt;
u32 max_wqe_idx;
u32 free_delta;
u16 dbid; /* qid, where to ring the doorbell. */
u32 len;
dma_addr_t pa;

5
drivers/infiniband/hw/ocrdma/ocrdma_abi.h
View File

@ -101,8 +101,6 @@ struct ocrdma_create_qp_uresp {
u32 rsvd1;
u32 num_wqe_allocated;
u32 num_rqe_allocated;
u32 free_wqe_delta;
u32 free_rqe_delta;
u32 db_sq_offset;
u32 db_rq_offset;
u32 db_shift;
@ -126,8 +124,7 @@ struct ocrdma_create_srq_uresp {
u32 db_rq_offset;
u32 db_shift;
u32 free_rqe_delta;
u32 rsvd2;
u64 rsvd2;
u64 rsvd3;
} __packed;

9
drivers/infiniband/hw/ocrdma/ocrdma_hw.c
View File

@ -732,7 +732,7 @@ static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
break;
case OCRDMA_SRQ_LIMIT_EVENT:
ib_evt.element.srq = &qp->srq->ibsrq;
ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
srq_event = 1;
qp_event = 0;
break;
@ -1990,19 +1990,12 @@ static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
max_wqe_allocated = 1 << max_wqe_allocated;
max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
if (qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
qp->sq.free_delta = 0;
qp->rq.free_delta = 1;
} else
qp->sq.free_delta = 1;
qp->sq.max_cnt = max_wqe_allocated;
qp->sq.max_wqe_idx = max_wqe_allocated - 1;
if (!attrs->srq) {
qp->rq.max_cnt = max_rqe_allocated;
qp->rq.max_wqe_idx = max_rqe_allocated - 1;
qp->rq.free_delta = 1;
}
}

1
drivers/infiniband/hw/ocrdma/ocrdma_main.c
View File

@ -26,7 +26,6 @@
*******************************************************************/
#include <linux/module.h>
#include <linux/version.h>
#include <linux/idr.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>

5
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
View File

@ -940,8 +940,6 @@ static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp,
uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET;
uresp.db_shift = 16;
}
uresp.free_wqe_delta = qp->sq.free_delta;
uresp.free_rqe_delta = qp->rq.free_delta;
if (qp->dpp_enabled) {
uresp.dpp_credit = dpp_credit_lmt;
@ -1307,8 +1305,6 @@ static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q)
free_cnt = (q->max_cnt - q->head) + q->tail;
else
free_cnt = q->tail - q->head;
if (q->free_delta)
free_cnt -= q->free_delta;
return free_cnt;
}
@ -1501,7 +1497,6 @@ static int ocrdma_copy_srq_uresp(struct ocrdma_srq *srq, struct ib_udata *udata)
(srq->pd->id * srq->dev->nic_info.db_page_size);
uresp.db_page_size = srq->dev->nic_info.db_page_size;
uresp.num_rqe_allocated = srq->rq.max_cnt;
uresp.free_rqe_delta = 1;
if (srq->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ1_OFFSET;
uresp.db_shift = 24;

1
drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
View File

@ -28,7 +28,6 @@
#ifndef __OCRDMA_VERBS_H__
#define __OCRDMA_VERBS_H__
#include <linux/version.h>
int ocrdma_post_send(struct ib_qp *, struct ib_send_wr *,
struct ib_send_wr **bad_wr);
int ocrdma_post_recv(struct ib_qp *, struct ib_recv_wr *,

71
drivers/iommu/amd_iommu.c
View File

@ -547,26 +547,12 @@ static void iommu_poll_events(struct amd_iommu *iommu)
spin_unlock_irqrestore(&iommu->lock, flags);
}
static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u32 head)
static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u64 *raw)
{
struct amd_iommu_fault fault;
volatile u64 *raw;
int i;
INC_STATS_COUNTER(pri_requests);
raw = (u64 *)(iommu->ppr_log + head);
/*
* Hardware bug: Interrupt may arrive before the entry is written to
* memory. If this happens we need to wait for the entry to arrive.
*/
for (i = 0; i < LOOP_TIMEOUT; ++i) {
if (PPR_REQ_TYPE(raw[0]) != 0)
break;
udelay(1);
}
if (PPR_REQ_TYPE(raw[0]) != PPR_REQ_FAULT) {
pr_err_ratelimited("AMD-Vi: Unknown PPR request received\n");
return;
@ -578,12 +564,6 @@ static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u32 head)
fault.tag = PPR_TAG(raw[0]);
fault.flags = PPR_FLAGS(raw[0]);
/*
* To detect the hardware bug we need to clear the entry
* to back to zero.
*/
raw[0] = raw[1] = 0;
atomic_notifier_call_chain(&ppr_notifier, 0, &fault);
}
@ -595,25 +575,62 @@ static void iommu_poll_ppr_log(struct amd_iommu *iommu)
if (iommu->ppr_log == NULL)
return;
/* enable ppr interrupts again */
writel(MMIO_STATUS_PPR_INT_MASK, iommu->mmio_base + MMIO_STATUS_OFFSET);
spin_lock_irqsave(&iommu->lock, flags);
head = readl(iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
tail = readl(iommu->mmio_base + MMIO_PPR_TAIL_OFFSET);
while (head != tail) {
volatile u64 *raw;
u64 entry[2];
int i;
/* Handle PPR entry */
iommu_handle_ppr_entry(iommu, head);
raw = (u64 *)(iommu->ppr_log + head);
/* Update and refresh ring-buffer state*/
/*
* Hardware bug: Interrupt may arrive before the entry is
* written to memory. If this happens we need to wait for the
* entry to arrive.
*/
for (i = 0; i < LOOP_TIMEOUT; ++i) {
if (PPR_REQ_TYPE(raw[0]) != 0)
break;
udelay(1);
}
/* Avoid memcpy function-call overhead */
entry[0] = raw[0];
entry[1] = raw[1];
/*
* To detect the hardware bug we need to clear the entry
* back to zero.
*/
raw[0] = raw[1] = 0UL;
/* Update head pointer of hardware ring-buffer */
head = (head + PPR_ENTRY_SIZE) % PPR_LOG_SIZE;
writel(head, iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
/*
* Release iommu->lock because ppr-handling might need to
* re-aquire it
*/
spin_unlock_irqrestore(&iommu->lock, flags);
/* Handle PPR entry */
iommu_handle_ppr_entry(iommu, entry);
spin_lock_irqsave(&iommu->lock, flags);
/* Refresh ring-buffer information */
head = readl(iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
tail = readl(iommu->mmio_base + MMIO_PPR_TAIL_OFFSET);
}
/* enable ppr interrupts again */
writel(MMIO_STATUS_PPR_INT_MASK, iommu->mmio_base + MMIO_STATUS_OFFSET);
spin_unlock_irqrestore(&iommu->lock, flags);
}

13
drivers/iommu/amd_iommu_init.c
View File

@ -1029,6 +1029,9 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
if (!iommu->dev)
return 1;
iommu->root_pdev = pci_get_bus_and_slot(iommu->dev->bus->number,
PCI_DEVFN(0, 0));
iommu->cap_ptr = h->cap_ptr;
iommu->pci_seg = h->pci_seg;
iommu->mmio_phys = h->mmio_phys;
@ -1323,20 +1326,16 @@ static void iommu_apply_resume_quirks(struct amd_iommu *iommu)
{
int i, j;
u32 ioc_feature_control;
struct pci_dev *pdev = NULL;
struct pci_dev *pdev = iommu->root_pdev;
/* RD890 BIOSes may not have completely reconfigured the iommu */
if (!is_rd890_iommu(iommu->dev))
if (!is_rd890_iommu(iommu->dev) || !pdev)
return;
/*
* First, we need to ensure that the iommu is enabled. This is
* controlled by a register in the northbridge
*/
pdev = pci_get_bus_and_slot(iommu->dev->bus->number, PCI_DEVFN(0, 0));
if (!pdev)
return;
/* Select Northbridge indirect register 0x75 and enable writing */
pci_write_config_dword(pdev, 0x60, 0x75 | (1 << 7));
@ -1346,8 +1345,6 @@ static void iommu_apply_resume_quirks(struct amd_iommu *iommu)
if (!(ioc_feature_control & 0x1))
pci_write_config_dword(pdev, 0x64, ioc_feature_control | 1);
pci_dev_put(pdev);
/* Restore the iommu BAR */
pci_write_config_dword(iommu->dev, iommu->cap_ptr + 4,
iommu->stored_addr_lo);

3
drivers/iommu/amd_iommu_types.h
View File

@ -481,6 +481,9 @@ struct amd_iommu {
/* Pointer to PCI device of this IOMMU */
struct pci_dev *dev;
/* Cache pdev to root device for resume quirks */
struct pci_dev *root_pdev;
/* physical address of MMIO space */
u64 mmio_phys;
/* virtual address of MMIO space */

4
drivers/md/raid1.c
View File

@ -2550,6 +2550,7 @@ static struct r1conf *setup_conf(struct mddev *mddev)
err = -EINVAL;
spin_lock_init(&conf->device_lock);
rdev_for_each(rdev, mddev) {
struct request_queue *q;
int disk_idx = rdev->raid_disk;
if (disk_idx >= mddev->raid_disks
|| disk_idx < 0)
@ -2562,6 +2563,9 @@ static struct r1conf *setup_conf(struct mddev *mddev)
if (disk->rdev)
goto abort;
disk->rdev = rdev;
q = bdev_get_queue(rdev->bdev);
if (q->merge_bvec_fn)
mddev->merge_check_needed = 1;
disk->head_position = 0;
}

4
drivers/md/raid10.c
View File

@ -3475,6 +3475,7 @@ static int run(struct mddev *mddev)
rdev_for_each(rdev, mddev) {
long long diff;
struct request_queue *q;
disk_idx = rdev->raid_disk;
if (disk_idx < 0)
@ -3493,6 +3494,9 @@ static int run(struct mddev *mddev)
goto out_free_conf;
disk->rdev = rdev;
}
q = bdev_get_queue(rdev->bdev);
if (q->merge_bvec_fn)
mddev->merge_check_needed = 1;
diff = (rdev->new_data_offset - rdev->data_offset);
if (!mddev->reshape_backwards)
diff = -diff;

12
drivers/mtd/ubi/debug.c
View File

@ -264,6 +264,9 @@ static struct dentry *dfs_rootdir;
*/
int ubi_debugfs_init(void)
{
if (!IS_ENABLED(DEBUG_FS))
return 0;
dfs_rootdir = debugfs_create_dir("ubi", NULL);
if (IS_ERR_OR_NULL(dfs_rootdir)) {
int err = dfs_rootdir ? -ENODEV : PTR_ERR(dfs_rootdir);
@ -281,7 +284,8 @@ int ubi_debugfs_init(void)
*/
void ubi_debugfs_exit(void)
{
debugfs_remove(dfs_rootdir);
if (IS_ENABLED(DEBUG_FS))
debugfs_remove(dfs_rootdir);
}
/* Read an UBI debugfs file */
@ -403,6 +407,9 @@ int ubi_debugfs_init_dev(struct ubi_device *ubi)
struct dentry *dent;
struct ubi_debug_info *d = ubi->dbg;
if (!IS_ENABLED(DEBUG_FS))
return 0;
n = snprintf(d->dfs_dir_name, UBI_DFS_DIR_LEN + 1, UBI_DFS_DIR_NAME,
ubi->ubi_num);
if (n == UBI_DFS_DIR_LEN) {
@ -470,5 +477,6 @@ out:
*/
void ubi_debugfs_exit_dev(struct ubi_device *ubi)
{
debugfs_remove_recursive(ubi->dbg->dfs_dir);
if (IS_ENABLED(DEBUG_FS))
debugfs_remove_recursive(ubi->dbg->dfs_dir);
}

17
drivers/mtd/ubi/wl.c
View File

@ -1262,11 +1262,11 @@ int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum)
dbg_wl("flush pending work for LEB %d:%d (%d pending works)",
vol_id, lnum, ubi->works_count);
down_write(&ubi->work_sem);
while (found) {
struct ubi_work *wrk;
found = 0;
down_read(&ubi->work_sem);
spin_lock(&ubi->wl_lock);
list_for_each_entry(wrk, &ubi->works, list) {
if ((vol_id == UBI_ALL || wrk->vol_id == vol_id) &&
@ -1277,18 +1277,27 @@ int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum)
spin_unlock(&ubi->wl_lock);
err = wrk->func(ubi, wrk, 0);
if (err)
goto out;
if (err) {
up_read(&ubi->work_sem);
return err;
}
spin_lock(&ubi->wl_lock);
found = 1;
break;
}
}
spin_unlock(&ubi->wl_lock);
up_read(&ubi->work_sem);
}
out:
/*
* Make sure all the works which have been done in parallel are
* finished.
*/
down_write(&ubi->work_sem);
up_write(&ubi->work_sem);
return err;
}

4
drivers/net/ethernet/mellanox/mlx4/port.c
View File

@ -697,10 +697,10 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
if (slave != dev->caps.function)
memset(inbox->buf, 0, 256);
if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
*(u8 *) inbox->buf = !!reset_qkey_viols << 6;
*(u8 *) inbox->buf |= !!reset_qkey_viols << 6;
((__be32 *) inbox->buf)[2] = agg_cap_mask;
} else {
((u8 *) inbox->buf)[3] = !!reset_qkey_viols;
((u8 *) inbox->buf)[3] |= !!reset_qkey_viols;
((__be32 *) inbox->buf)[1] = agg_cap_mask;
}

2
drivers/platform/x86/acerhdf.c
View File

@ -5,7 +5,7 @@
*
* (C) 2009 - Peter Feuerer peter (a) piie.net
* http://piie.net
* 2009 Borislav Petkov <petkovbb@gmail.com>
* 2009 Borislav Petkov bp (a) alien8.de
*
* Inspired by and many thanks to:
* o acerfand - Rachel Greenham

16
fs/dcache.c
View File

@ -683,6 +683,8 @@ EXPORT_SYMBOL(dget_parent);
/**
* d_find_alias - grab a hashed alias of inode
* @inode: inode in question
* @want_discon: flag, used by d_splice_alias, to request
* that only a DISCONNECTED alias be returned.
*
* If inode has a hashed alias, or is a directory and has any alias,
* acquire the reference to alias and return it. Otherwise return NULL.
@ -691,9 +693,10 @@ EXPORT_SYMBOL(dget_parent);
* of a filesystem.
*
* If the inode has an IS_ROOT, DCACHE_DISCONNECTED alias, then prefer
* any other hashed alias over that.
* any other hashed alias over that one unless @want_discon is set,
* in which case only return an IS_ROOT, DCACHE_DISCONNECTED alias.
*/
static struct dentry *__d_find_alias(struct inode *inode)
static struct dentry *__d_find_alias(struct inode *inode, int want_discon)
{
struct dentry *alias, *discon_alias;
@ -705,7 +708,7 @@ again:
if (IS_ROOT(alias) &&
(alias->d_flags & DCACHE_DISCONNECTED)) {
discon_alias = alias;
} else {
} else if (!want_discon) {
__dget_dlock(alias);
spin_unlock(&alias->d_lock);
return alias;
@ -736,7 +739,7 @@ struct dentry *d_find_alias(struct inode *inode)
if (!list_empty(&inode->i_dentry)) {
spin_lock(&inode->i_lock);
de = __d_find_alias(inode);
de = __d_find_alias(inode, 0);
spin_unlock(&inode->i_lock);
}
return de;
@ -1647,8 +1650,9 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
if (inode && S_ISDIR(inode->i_mode)) {
spin_lock(&inode->i_lock);
new = __d_find_any_alias(inode);
new = __d_find_alias(inode, 1);
if (new) {
BUG_ON(!(new->d_flags & DCACHE_DISCONNECTED));
spin_unlock(&inode->i_lock);
security_d_instantiate(new, inode);
d_move(new, dentry);
@ -2478,7 +2482,7 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode)
struct dentry *alias;
/* Does an aliased dentry already exist? */
alias = __d_find_alias(inode);
alias = __d_find_alias(inode, 0);
if (alias) {
actual = alias;
write_seqlock(&rename_lock);

8
fs/ext4/balloc.c
View File

@ -90,8 +90,8 @@ unsigned ext4_num_overhead_clusters(struct super_block *sb,
* unusual file system layouts.
*/
if (ext4_block_in_group(sb, ext4_block_bitmap(sb, gdp), block_group)) {
block_cluster = EXT4_B2C(sbi, (start -
ext4_block_bitmap(sb, gdp)));
block_cluster = EXT4_B2C(sbi,
ext4_block_bitmap(sb, gdp) - start);
if (block_cluster < num_clusters)
block_cluster = -1;
else if (block_cluster == num_clusters) {
@ -102,7 +102,7 @@ unsigned ext4_num_overhead_clusters(struct super_block *sb,
if (ext4_block_in_group(sb, ext4_inode_bitmap(sb, gdp), block_group)) {
inode_cluster = EXT4_B2C(sbi,
start - ext4_inode_bitmap(sb, gdp));
ext4_inode_bitmap(sb, gdp) - start);
if (inode_cluster < num_clusters)
inode_cluster = -1;
else if (inode_cluster == num_clusters) {
@ -114,7 +114,7 @@ unsigned ext4_num_overhead_clusters(struct super_block *sb,
itbl_blk = ext4_inode_table(sb, gdp);
for (i = 0; i < sbi->s_itb_per_group; i++) {
if (ext4_block_in_group(sb, itbl_blk + i, block_group)) {
c = EXT4_B2C(sbi, start - itbl_blk + i);
c = EXT4_B2C(sbi, itbl_blk + i - start);
if ((c < num_clusters) || (c == inode_cluster) ||
(c == block_cluster) || (c == itbl_cluster))
continue;

1
fs/ext4/ioctl.c
View File

@ -123,7 +123,6 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
else
ext4_clear_inode_flag(inode, i);
}
ei->i_flags = flags;
ext4_set_inode_flags(inode);
inode->i_ctime = ext4_current_time(inode);

12
fs/ubifs/debug.c
View File

@ -2918,6 +2918,9 @@ int dbg_debugfs_init_fs(struct ubifs_info *c)
struct dentry *dent;
struct ubifs_debug_info *d = c->dbg;
if (!IS_ENABLED(DEBUG_FS))
return 0;
n = snprintf(d->dfs_dir_name, UBIFS_DFS_DIR_LEN + 1, UBIFS_DFS_DIR_NAME,
c->vi.ubi_num, c->vi.vol_id);
if (n == UBIFS_DFS_DIR_LEN) {
@ -3010,7 +3013,8 @@ out:
*/
void dbg_debugfs_exit_fs(struct ubifs_info *c)
{
debugfs_remove_recursive(c->dbg->dfs_dir);
if (IS_ENABLED(DEBUG_FS))
debugfs_remove_recursive(c->dbg->dfs_dir);
}
struct ubifs_global_debug_info ubifs_dbg;
@ -3095,6 +3099,9 @@ int dbg_debugfs_init(void)
const char *fname;
struct dentry *dent;
if (!IS_ENABLED(DEBUG_FS))
return 0;
fname = "ubifs";
dent = debugfs_create_dir(fname, NULL);
if (IS_ERR_OR_NULL(dent))
@ -3159,7 +3166,8 @@ out:
*/
void dbg_debugfs_exit(void)
{
debugfs_remove_recursive(dfs_rootdir);
if (IS_ENABLED(DEBUG_FS))
debugfs_remove_recursive(dfs_rootdir);
}
/**

4
include/acpi/acpi_bus.h
View File

@ -440,8 +440,8 @@ static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
#else /* CONFIG_ACPI */
static int register_acpi_bus_type(struct acpi_bus_type *bus) { return 0; }
static int unregister_acpi_bus_type(struct acpi_bus_type *bus) { return 0; }
static inline int register_acpi_bus_type(void *bus) { return 0; }
static inline int unregister_acpi_bus_type(void *bus) { return 0; }
#endif /* CONFIG_ACPI */

4
include/drm/exynos_drm.h
View File

@ -64,6 +64,7 @@ struct drm_exynos_gem_map_off {
* A structure for mapping buffer.
*
* @handle: a handle to gem object created.
* @pad: just padding to be 64-bit aligned.
* @size: memory size to be mapped.
* @mapped: having user virtual address mmaped.
* - this variable would be filled by exynos gem module
@ -72,7 +73,8 @@ struct drm_exynos_gem_map_off {
*/
struct drm_exynos_gem_mmap {
unsigned int handle;
unsigned int size;
unsigned int pad;
uint64_t size;
uint64_t mapped;
};

10
include/linux/moduleparam.h
View File

@ -128,7 +128,7 @@ struct kparam_array
* The ops can have NULL set or get functions.
*/
#define module_param_cb(name, ops, arg, perm) \
__module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, 0)
__module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, -1)
/**
* <level>_param_cb - general callback for a module/cmdline parameter
@ -192,7 +192,7 @@ struct kparam_array
{ (void *)set, (void *)get }; \
__module_param_call(MODULE_PARAM_PREFIX, \
name, &__param_ops_##name, arg, \
(perm) + sizeof(__check_old_set_param(set))*0, 0)
(perm) + sizeof(__check_old_set_param(set))*0, -1)
/* We don't get oldget: it's often a new-style param_get_uint, etc. */
static inline int
@ -272,7 +272,7 @@ static inline void __kernel_param_unlock(void)
*/
#define core_param(name, var, type, perm) \
param_check_##type(name, &(var)); \
__module_param_call("", name, &param_ops_##type, &var, perm, 0)
__module_param_call("", name, &param_ops_##type, &var, perm, -1)
#endif /* !MODULE */
/**
@ -290,7 +290,7 @@ static inline void __kernel_param_unlock(void)
= { len, string }; \
__module_param_call(MODULE_PARAM_PREFIX, name, \
&param_ops_string, \
.str = &__param_string_##name, perm, 0); \
.str = &__param_string_##name, perm, -1); \
__MODULE_PARM_TYPE(name, "string")
/**
@ -432,7 +432,7 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp);
__module_param_call(MODULE_PARAM_PREFIX, name, \
&param_array_ops, \
.arr = &__param_arr_##name, \
perm, 0); \
perm, -1); \
__MODULE_PARM_TYPE(name, "array of " #type)
extern struct kernel_param_ops param_array_ops;

4
include/linux/perf_event.h
View File

@ -555,6 +555,8 @@ enum perf_event_type {
PERF_RECORD_MAX, /* non-ABI */
};
#define PERF_MAX_STACK_DEPTH 127
enum perf_callchain_context {
PERF_CONTEXT_HV = (__u64)-32,
PERF_CONTEXT_KERNEL = (__u64)-128,
@ -609,8 +611,6 @@ struct perf_guest_info_callbacks {
#include <linux/sysfs.h>
#include <asm/local.h>
#define PERF_MAX_STACK_DEPTH 255
struct perf_callchain_entry {
__u64 nr;
__u64 ip[PERF_MAX_STACK_DEPTH];

10
include/linux/prctl.h
View File

@ -127,8 +127,8 @@
#define PR_SET_PTRACER 0x59616d61
# define PR_SET_PTRACER_ANY ((unsigned long)-1)
#define PR_SET_CHILD_SUBREAPER 36
#define PR_GET_CHILD_SUBREAPER 37
#define PR_SET_CHILD_SUBREAPER 36
#define PR_GET_CHILD_SUBREAPER 37
/*
* If no_new_privs is set, then operations that grant new privileges (i.e.
@ -142,7 +142,9 @@
* asking selinux for a specific new context (e.g. with runcon) will result
* in execve returning -EPERM.
*/
#define PR_SET_NO_NEW_PRIVS 38
#define PR_GET_NO_NEW_PRIVS 39
#define PR_SET_NO_NEW_PRIVS 38
#define PR_GET_NO_NEW_PRIVS 39
#define PR_GET_TID_ADDRESS 40
#endif /* _LINUX_PRCTL_H */

12
include/linux/sched.h
View File

@ -439,6 +439,7 @@ extern int get_dumpable(struct mm_struct *mm);
/* leave room for more dump flags */
#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
#define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */
#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
@ -876,6 +877,8 @@ struct sched_group_power {
* Number of busy cpus in this group.
*/
atomic_t nr_busy_cpus;
unsigned long cpumask[0]; /* iteration mask */
};
struct sched_group {
@ -900,6 +903,15 @@ static inline struct cpumask *sched_group_cpus(struct sched_group *sg)
return to_cpumask(sg->cpumask);
}
/*
* cpumask masking which cpus in the group are allowed to iterate up the domain
* tree.
*/
static inline struct cpumask *sched_group_mask(struct sched_group *sg)
{
return to_cpumask(sg->sgp->cpumask);
}
/**
* group_first_cpu - Returns the first cpu in the cpumask of a sched_group.
* @group: The group whose first cpu is to be returned.

8
include/linux/tick.h
View File

@ -31,10 +31,10 @@ enum tick_nohz_mode {
* struct tick_sched - sched tick emulation and no idle tick control/stats
* @sched_timer: hrtimer to schedule the periodic tick in high
* resolution mode
* @idle_tick: Store the last idle tick expiry time when the tick
* timer is modified for idle sleeps. This is necessary
* @last_tick: Store the last tick expiry time when the tick
* timer is modified for nohz sleeps. This is necessary
* to resume the tick timer operation in the timeline
* when the CPU returns from idle
* when the CPU returns from nohz sleep.
* @tick_stopped: Indicator that the idle tick has been stopped
* @idle_jiffies: jiffies at the entry to idle for idle time accounting
* @idle_calls: Total number of idle calls
@ -51,7 +51,7 @@ struct tick_sched {
struct hrtimer sched_timer;
unsigned long check_clocks;
enum tick_nohz_mode nohz_mode;
ktime_t idle_tick;
ktime_t last_tick;
int inidle;
int tick_stopped;
unsigned long idle_jiffies;

9
init/main.c
View File

@ -508,7 +508,7 @@ asmlinkage void __init start_kernel(void)
parse_early_param();
parse_args("Booting kernel", static_command_line, __start___param,
__stop___param - __start___param,
0, 0, &unknown_bootoption);
-1, -1, &unknown_bootoption);
jump_label_init();
@ -755,13 +755,8 @@ static void __init do_initcalls(void)
{
int level;
for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++) {
pr_info("initlevel:%d=%s, %d registered initcalls\n",
level, initcall_level_names[level],
(int) (initcall_levels[level+1]
- initcall_levels[level]));
for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++)
do_initcall_level(level);
}
}
/*

12
ipc/shm.c
View File

@ -393,6 +393,16 @@ static int shm_fsync(struct file *file, loff_t start, loff_t end, int datasync)
return sfd->file->f_op->fsync(sfd->file, start, end, datasync);
}
static long shm_fallocate(struct file *file, int mode, loff_t offset,
loff_t len)
{
struct shm_file_data *sfd = shm_file_data(file);
if (!sfd->file->f_op->fallocate)
return -EOPNOTSUPP;
return sfd->file->f_op->fallocate(file, mode, offset, len);
}
static unsigned long shm_get_unmapped_area(struct file *file,
unsigned long addr, unsigned long len, unsigned long pgoff,
unsigned long flags)
@ -410,6 +420,7 @@ static const struct file_operations shm_file_operations = {
.get_unmapped_area = shm_get_unmapped_area,
#endif
.llseek = noop_llseek,
.fallocate = shm_fallocate,
};
static const struct file_operations shm_file_operations_huge = {
@ -418,6 +429,7 @@ static const struct file_operations shm_file_operations_huge = {
.release = shm_release,
.get_unmapped_area = shm_get_unmapped_area,
.llseek = noop_llseek,
.fallocate = shm_fallocate,
};
int is_file_shm_hugepages(struct file *file)

1
kernel/events/core.c
View File

@ -3181,7 +3181,6 @@ static void perf_event_for_each(struct perf_event *event,
event = event->group_leader;
perf_event_for_each_child(event, func);
func(event);
list_for_each_entry(sibling, &event->sibling_list, group_entry)
perf_event_for_each_child(sibling, func);
mutex_unlock(&ctx->mutex);

187
kernel/sched/core.c
View File

@ -5556,15 +5556,20 @@ static cpumask_var_t sched_domains_tmpmask; /* sched_domains_mutex */
#ifdef CONFIG_SCHED_DEBUG
static __read_mostly int sched_domain_debug_enabled;
static __read_mostly int sched_debug_enabled;
static int __init sched_domain_debug_setup(char *str)
static int __init sched_debug_setup(char *str)
{
sched_domain_debug_enabled = 1;
sched_debug_enabled = 1;
return 0;
}
early_param("sched_debug", sched_domain_debug_setup);
early_param("sched_debug", sched_debug_setup);
static inline bool sched_debug(void)
{
return sched_debug_enabled;
}
static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
struct cpumask *groupmask)
@ -5604,7 +5609,12 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
break;
}
if (!group->sgp->power) {
/*
* Even though we initialize ->power to something semi-sane,
* we leave power_orig unset. This allows us to detect if
* domain iteration is still funny without causing /0 traps.
*/
if (!group->sgp->power_orig) {
printk(KERN_CONT "\n");
printk(KERN_ERR "ERROR: domain->cpu_power not "
"set\n");
@ -5652,7 +5662,7 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
{
int level = 0;
if (!sched_domain_debug_enabled)
if (!sched_debug_enabled)
return;
if (!sd) {
@ -5673,6 +5683,10 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
}
#else /* !CONFIG_SCHED_DEBUG */
# define sched_domain_debug(sd, cpu) do { } while (0)
static inline bool sched_debug(void)
{
return false;
}
#endif /* CONFIG_SCHED_DEBUG */
static int sd_degenerate(struct sched_domain *sd)
@ -5994,6 +6008,44 @@ struct sched_domain_topology_level {
struct sd_data data;
};
/*
* Build an iteration mask that can exclude certain CPUs from the upwards
* domain traversal.
*
* Asymmetric node setups can result in situations where the domain tree is of
* unequal depth, make sure to skip domains that already cover the entire
* range.
*
* In that case build_sched_domains() will have terminated the iteration early
* and our sibling sd spans will be empty. Domains should always include the
* cpu they're built on, so check that.
*
*/
static void build_group_mask(struct sched_domain *sd, struct sched_group *sg)
{
const struct cpumask *span = sched_domain_span(sd);
struct sd_data *sdd = sd->private;
struct sched_domain *sibling;
int i;
for_each_cpu(i, span) {
sibling = *per_cpu_ptr(sdd->sd, i);
if (!cpumask_test_cpu(i, sched_domain_span(sibling)))
continue;
cpumask_set_cpu(i, sched_group_mask(sg));
}
}
/*
* Return the canonical balance cpu for this group, this is the first cpu
* of this group that's also in the iteration mask.
*/
int group_balance_cpu(struct sched_group *sg)
{
return cpumask_first_and(sched_group_cpus(sg), sched_group_mask(sg));
}
static int
build_overlap_sched_groups(struct sched_domain *sd, int cpu)
{
@ -6012,6 +6064,12 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu)
if (cpumask_test_cpu(i, covered))
continue;
child = *per_cpu_ptr(sdd->sd, i);
/* See the comment near build_group_mask(). */
if (!cpumask_test_cpu(i, sched_domain_span(child)))
continue;
sg = kzalloc_node(sizeof(struct sched_group) + cpumask_size(),
GFP_KERNEL, cpu_to_node(cpu));
@ -6019,8 +6077,6 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu)
goto fail;
sg_span = sched_group_cpus(sg);
child = *per_cpu_ptr(sdd->sd, i);
if (child->child) {
child = child->child;
cpumask_copy(sg_span, sched_domain_span(child));
@ -6030,13 +6086,24 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu)
cpumask_or(covered, covered, sg_span);
sg->sgp = *per_cpu_ptr(sdd->sgp, i);
atomic_inc(&sg->sgp->ref);
if (atomic_inc_return(&sg->sgp->ref) == 1)
build_group_mask(sd, sg);
/*
* Initialize sgp->power such that even if we mess up the
* domains and no possible iteration will get us here, we won't
* die on a /0 trap.
*/
sg->sgp->power = SCHED_POWER_SCALE * cpumask_weight(sg_span);
/*
* Make sure the first group of this domain contains the
* canonical balance cpu. Otherwise the sched_domain iteration
* breaks. See update_sg_lb_stats().
*/
if ((!groups && cpumask_test_cpu(cpu, sg_span)) ||
cpumask_first(sg_span) == cpu) {
WARN_ON_ONCE(!cpumask_test_cpu(cpu, sg_span));
group_balance_cpu(sg) == cpu)
groups = sg;
}
if (!first)
first = sg;
@ -6109,6 +6176,7 @@ build_sched_groups(struct sched_domain *sd, int cpu)
cpumask_clear(sched_group_cpus(sg));
sg->sgp->power = 0;
cpumask_setall(sched_group_mask(sg));
for_each_cpu(j, span) {
if (get_group(j, sdd, NULL) != group)
@ -6150,7 +6218,7 @@ static void init_sched_groups_power(int cpu, struct sched_domain *sd)
sg = sg->next;
} while (sg != sd->groups);
if (cpu != group_first_cpu(sg))
if (cpu != group_balance_cpu(sg))
return;
update_group_power(sd, cpu);
@ -6200,11 +6268,8 @@ int sched_domain_level_max;
static int __init setup_relax_domain_level(char *str)
{
unsigned long val;
val = simple_strtoul(str, NULL, 0);
if (val < sched_domain_level_max)
default_relax_domain_level = val;
if (kstrtoint(str, 0, &default_relax_domain_level))
pr_warn("Unable to set relax_domain_level\n");
return 1;
}
@ -6314,14 +6379,13 @@ static struct sched_domain_topology_level *sched_domain_topology = default_topol
#ifdef CONFIG_NUMA
static int sched_domains_numa_levels;
static int sched_domains_numa_scale;
static int *sched_domains_numa_distance;
static struct cpumask ***sched_domains_numa_masks;
static int sched_domains_curr_level;
static inline int sd_local_flags(int level)
{
if (sched_domains_numa_distance[level] > REMOTE_DISTANCE)
if (sched_domains_numa_distance[level] > RECLAIM_DISTANCE)
return 0;
return SD_BALANCE_EXEC | SD_BALANCE_FORK | SD_WAKE_AFFINE;
@ -6379,6 +6443,42 @@ static const struct cpumask *sd_numa_mask(int cpu)
return sched_domains_numa_masks[sched_domains_curr_level][cpu_to_node(cpu)];
}
static void sched_numa_warn(const char *str)
{
static int done = false;
int i,j;
if (done)
return;
done = true;
printk(KERN_WARNING "ERROR: %s\n\n", str);
for (i = 0; i < nr_node_ids; i++) {
printk(KERN_WARNING " ");
for (j = 0; j < nr_node_ids; j++)
printk(KERN_CONT "%02d ", node_distance(i,j));
printk(KERN_CONT "\n");
}
printk(KERN_WARNING "\n");
}
static bool find_numa_distance(int distance)
{
int i;
if (distance == node_distance(0, 0))
return true;
for (i = 0; i < sched_domains_numa_levels; i++) {
if (sched_domains_numa_distance[i] == distance)
return true;
}
return false;
}
static void sched_init_numa(void)
{
int next_distance, curr_distance = node_distance(0, 0);
@ -6386,7 +6486,6 @@ static void sched_init_numa(void)
int level = 0;
int i, j, k;
sched_domains_numa_scale = curr_distance;
sched_domains_numa_distance = kzalloc(sizeof(int) * nr_node_ids, GFP_KERNEL);
if (!sched_domains_numa_distance)
return;
@ -6397,23 +6496,41 @@ static void sched_init_numa(void)
*
* Assumes node_distance(0,j) includes all distances in
* node_distance(i,j) in order to avoid cubic time.
*
* XXX: could be optimized to O(n log n) by using sort()
*/
next_distance = curr_distance;
for (i = 0; i < nr_node_ids; i++) {
for (j = 0; j < nr_node_ids; j++) {
int distance = node_distance(0, j);
if (distance > curr_distance &&
(distance < next_distance ||
next_distance == curr_distance))
next_distance = distance;
for (k = 0; k < nr_node_ids; k++) {
int distance = node_distance(i, k);
if (distance > curr_distance &&
(distance < next_distance ||
next_distance == curr_distance))
next_distance = distance;
/*
* While not a strong assumption it would be nice to know
* about cases where if node A is connected to B, B is not
* equally connected to A.
*/
if (sched_debug() && node_distance(k, i) != distance)
sched_numa_warn("Node-distance not symmetric");
if (sched_debug() && i && !find_numa_distance(distance))
sched_numa_warn("Node-0 not representative");
}
if (next_distance != curr_distance) {
sched_domains_numa_distance[level++] = next_distance;
sched_domains_numa_levels = level;
curr_distance = next_distance;
} else break;
}
if (next_distance != curr_distance) {
sched_domains_numa_distance[level++] = next_distance;
sched_domains_numa_levels = level;
curr_distance = next_distance;
} else break;
/*
* In case of sched_debug() we verify the above assumption.
*/
if (!sched_debug())
break;
}
/*
* 'level' contains the number of unique distances, excluding the
@ -6525,7 +6642,7 @@ static int __sdt_alloc(const struct cpumask *cpu_map)
*per_cpu_ptr(sdd->sg, j) = sg;
sgp = kzalloc_node(sizeof(struct sched_group_power),
sgp = kzalloc_node(sizeof(struct sched_group_power) + cpumask_size(),
GFP_KERNEL, cpu_to_node(j));
if (!sgp)
return -ENOMEM;
@ -6578,7 +6695,6 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
if (!sd)
return child;
set_domain_attribute(sd, attr);
cpumask_and(sched_domain_span(sd), cpu_map, tl->mask(cpu));
if (child) {
sd->level = child->level + 1;
@ -6586,6 +6702,7 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
child->parent = sd;
}
sd->child = child;
set_domain_attribute(sd, attr);
return sd;
}

29
kernel/sched/fair.c
View File

@ -3602,7 +3602,7 @@ void update_group_power(struct sched_domain *sd, int cpu)
} while (group != child->groups);
}
sdg->sgp->power = power;
sdg->sgp->power_orig = sdg->sgp->power = power;
}
/*
@ -3632,7 +3632,7 @@ fix_small_capacity(struct sched_domain *sd, struct sched_group *group)
/**
* update_sg_lb_stats - Update sched_group's statistics for load balancing.
* @sd: The sched_domain whose statistics are to be updated.
* @env: The load balancing environment.
* @group: sched_group whose statistics are to be updated.
* @load_idx: Load index of sched_domain of this_cpu for load calc.
* @local_group: Does group contain this_cpu.
@ -3652,7 +3652,7 @@ static inline void update_sg_lb_stats(struct lb_env *env,
int i;
if (local_group)
balance_cpu = group_first_cpu(group);
balance_cpu = group_balance_cpu(group);
/* Tally up the load of all CPUs in the group */
max_cpu_load = 0;
@ -3667,7 +3667,8 @@ static inline void update_sg_lb_stats(struct lb_env *env,
/* Bias balancing toward cpus of our domain */
if (local_group) {
if (idle_cpu(i) && !first_idle_cpu) {
if (idle_cpu(i) && !first_idle_cpu &&
cpumask_test_cpu(i, sched_group_mask(group))) {
first_idle_cpu = 1;
balance_cpu = i;
}
@ -3741,11 +3742,10 @@ static inline void update_sg_lb_stats(struct lb_env *env,
/**
* update_sd_pick_busiest - return 1 on busiest group
* @sd: sched_domain whose statistics are to be checked
* @env: The load balancing environment.
* @sds: sched_domain statistics
* @sg: sched_group candidate to be checked for being the busiest
* @sgs: sched_group statistics
* @this_cpu: the current cpu
*
* Determine if @sg is a busier group than the previously selected
* busiest group.
@ -3783,9 +3783,7 @@ static bool update_sd_pick_busiest(struct lb_env *env,
/**
* update_sd_lb_stats - Update sched_domain's statistics for load balancing.
* @sd: sched_domain whose statistics are to be updated.
* @this_cpu: Cpu for which load balance is currently performed.
* @idle: Idle status of this_cpu
* @env: The load balancing environment.
* @cpus: Set of cpus considered for load balancing.
* @balance: Should we balance.
* @sds: variable to hold the statistics for this sched_domain.
@ -3874,10 +3872,8 @@ static inline void update_sd_lb_stats(struct lb_env *env,
* Returns 1 when packing is required and a task should be moved to
* this CPU. The amount of the imbalance is returned in *imbalance.
*
* @sd: The sched_domain whose packing is to be checked.
* @env: The load balancing environment.
* @sds: Statistics of the sched_domain which is to be packed
* @this_cpu: The cpu at whose sched_domain we're performing load-balance.
* @imbalance: returns amount of imbalanced due to packing.
*/
static int check_asym_packing(struct lb_env *env, struct sd_lb_stats *sds)
{
@ -3903,9 +3899,8 @@ static int check_asym_packing(struct lb_env *env, struct sd_lb_stats *sds)
* fix_small_imbalance - Calculate the minor imbalance that exists
* amongst the groups of a sched_domain, during
* load balancing.
* @env: The load balancing environment.
* @sds: Statistics of the sched_domain whose imbalance is to be calculated.
* @this_cpu: The cpu at whose sched_domain we're performing load-balance.
* @imbalance: Variable to store the imbalance.
*/
static inline
void fix_small_imbalance(struct lb_env *env, struct sd_lb_stats *sds)
@ -4048,11 +4043,7 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
* Also calculates the amount of weighted load which should be moved
* to restore balance.
*
* @sd: The sched_domain whose busiest group is to be returned.
* @this_cpu: The cpu for which load balancing is currently being performed.
* @imbalance: Variable which stores amount of weighted load which should
* be moved to restore balance/put a group to idle.
* @idle: The idle status of this_cpu.
* @env: The load balancing environment.
* @cpus: The set of CPUs under consideration for load-balancing.
* @balance: Pointer to a variable indicating if this_cpu
* is the appropriate cpu to perform load balancing at this_level.

2
kernel/sched/rt.c
View File

@ -1562,7 +1562,7 @@ static struct rq *find_lock_lowest_rq(struct task_struct *task, struct rq *rq)
task_running(rq, task) ||
!task->on_rq)) {
raw_spin_unlock(&lowest_rq->lock);
double_unlock_balance(rq, lowest_rq);
lowest_rq = NULL;
break;
}

2
kernel/sched/sched.h
View File

@ -526,6 +526,8 @@ static inline struct sched_domain *highest_flag_domain(int cpu, int flag)
DECLARE_PER_CPU(struct sched_domain *, sd_llc);
DECLARE_PER_CPU(int, sd_llc_id);
extern int group_balance_cpu(struct sched_group *sg);
#endif /* CONFIG_SMP */
#include "stats.h"

60
kernel/sys.c
View File

@ -1786,27 +1786,13 @@ SYSCALL_DEFINE1(umask, int, mask)
}
#ifdef CONFIG_CHECKPOINT_RESTORE
static bool vma_flags_mismatch(struct vm_area_struct *vma,
unsigned long required,
unsigned long banned)
{
return (vma->vm_flags & required) != required ||
(vma->vm_flags & banned);
}
static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
{
struct vm_area_struct *vma;
struct file *exe_file;
struct dentry *dentry;
int err;
/*
* Setting new mm::exe_file is only allowed when no VM_EXECUTABLE vma's
* remain. So perform a quick test first.
*/
if (mm->num_exe_file_vmas)
return -EBUSY;
exe_file = fget(fd);
if (!exe_file)
return -EBADF;
@ -1827,17 +1813,30 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
if (err)
goto exit;
down_write(&mm->mmap_sem);
/*
* Forbid mm->exe_file change if there are mapped other files.
*/
err = -EBUSY;
for (vma = mm->mmap; vma; vma = vma->vm_next) {
if (vma->vm_file && !path_equal(&vma->vm_file->f_path,
&exe_file->f_path))
goto exit_unlock;
}
/*
* The symlink can be changed only once, just to disallow arbitrary
* transitions malicious software might bring in. This means one
* could make a snapshot over all processes running and monitor
* /proc/pid/exe changes to notice unusual activity if needed.
*/
down_write(&mm->mmap_sem);
if (likely(!mm->exe_file))
set_mm_exe_file(mm, exe_file);
else
err = -EBUSY;
err = -EPERM;
if (test_and_set_bit(MMF_EXE_FILE_CHANGED, &mm->flags))
goto exit_unlock;
set_mm_exe_file(mm, exe_file);
exit_unlock:
up_write(&mm->mmap_sem);
exit:
@ -1862,7 +1861,7 @@ static int prctl_set_mm(int opt, unsigned long addr,
if (opt == PR_SET_MM_EXE_FILE)
return prctl_set_mm_exe_file(mm, (unsigned int)addr);
if (addr >= TASK_SIZE)
if (addr >= TASK_SIZE || addr < mmap_min_addr)
return -EINVAL;
error = -EINVAL;
@ -1924,12 +1923,6 @@ static int prctl_set_mm(int opt, unsigned long addr,
error = -EFAULT;
goto out;
}
#ifdef CONFIG_STACK_GROWSUP
if (vma_flags_mismatch(vma, VM_READ | VM_WRITE | VM_GROWSUP, 0))
#else
if (vma_flags_mismatch(vma, VM_READ | VM_WRITE | VM_GROWSDOWN, 0))
#endif
goto out;
if (opt == PR_SET_MM_START_STACK)
mm->start_stack = addr;
else if (opt == PR_SET_MM_ARG_START)
@ -1981,12 +1974,22 @@ out:
up_read(&mm->mmap_sem);
return error;
}
static int prctl_get_tid_address(struct task_struct *me, int __user **tid_addr)
{
return put_user(me->clear_child_tid, tid_addr);
}
#else /* CONFIG_CHECKPOINT_RESTORE */
static int prctl_set_mm(int opt, unsigned long addr,
unsigned long arg4, unsigned long arg5)
{
return -EINVAL;
}
static int prctl_get_tid_address(struct task_struct *me, int __user **tid_addr)
{
return -EINVAL;
}
#endif
SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
@ -2124,6 +2127,9 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
else
return -EINVAL;
break;
case PR_GET_TID_ADDRESS:
error = prctl_get_tid_address(me, (int __user **)arg2);
break;
default:
return -EINVAL;
}

190
kernel/time/tick-sched.c
View File

@ -271,49 +271,15 @@ u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time)
}
EXPORT_SYMBOL_GPL(get_cpu_iowait_time_us);
static void tick_nohz_stop_sched_tick(struct tick_sched *ts)
static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
ktime_t now, int cpu)
{
unsigned long seq, last_jiffies, next_jiffies, delta_jiffies;
ktime_t last_update, expires, now;
ktime_t last_update, expires, ret = { .tv64 = 0 };
struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
u64 time_delta;
int cpu;
cpu = smp_processor_id();
ts = &per_cpu(tick_cpu_sched, cpu);
now = tick_nohz_start_idle(cpu, ts);
/*
* If this cpu is offline and it is the one which updates
* jiffies, then give up the assignment and let it be taken by
* the cpu which runs the tick timer next. If we don't drop
* this here the jiffies might be stale and do_timer() never
* invoked.
*/
if (unlikely(!cpu_online(cpu))) {
if (cpu == tick_do_timer_cpu)
tick_do_timer_cpu = TICK_DO_TIMER_NONE;
}
if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
return;
if (need_resched())
return;
if (unlikely(local_softirq_pending() && cpu_online(cpu))) {
static int ratelimit;
if (ratelimit < 10) {
printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
(unsigned int) local_softirq_pending());
ratelimit++;
}
return;
}
ts->idle_calls++;
/* Read jiffies and the time when jiffies were updated last */
do {
seq = read_seqbegin(&xtime_lock);
@ -392,6 +358,8 @@ static void tick_nohz_stop_sched_tick(struct tick_sched *ts)
if (ts->tick_stopped && ktime_equal(expires, dev->next_event))
goto out;
ret = expires;
/*
* nohz_stop_sched_tick can be called several times before
* the nohz_restart_sched_tick is called. This happens when
@ -402,16 +370,10 @@ static void tick_nohz_stop_sched_tick(struct tick_sched *ts)
if (!ts->tick_stopped) {
select_nohz_load_balancer(1);
ts->idle_tick = hrtimer_get_expires(&ts->sched_timer);
ts->last_tick = hrtimer_get_expires(&ts->sched_timer);
ts->tick_stopped = 1;
ts->idle_jiffies = last_jiffies;
}
ts->idle_sleeps++;
/* Mark expires */
ts->idle_expires = expires;
/*
* If the expiration time == KTIME_MAX, then
* in this case we simply stop the tick timer.
@ -442,6 +404,65 @@ out:
ts->next_jiffies = next_jiffies;
ts->last_jiffies = last_jiffies;
ts->sleep_length = ktime_sub(dev->next_event, now);
return ret;
}
static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
{
/*
* If this cpu is offline and it is the one which updates
* jiffies, then give up the assignment and let it be taken by
* the cpu which runs the tick timer next. If we don't drop
* this here the jiffies might be stale and do_timer() never
* invoked.
*/
if (unlikely(!cpu_online(cpu))) {
if (cpu == tick_do_timer_cpu)
tick_do_timer_cpu = TICK_DO_TIMER_NONE;
}
if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
return false;
if (need_resched())
return false;
if (unlikely(local_softirq_pending() && cpu_online(cpu))) {
static int ratelimit;
if (ratelimit < 10) {
printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
(unsigned int) local_softirq_pending());
ratelimit++;
}
return false;
}
return true;
}
static void __tick_nohz_idle_enter(struct tick_sched *ts)
{
ktime_t now, expires;
int cpu = smp_processor_id();
now = tick_nohz_start_idle(cpu, ts);
if (can_stop_idle_tick(cpu, ts)) {
int was_stopped = ts->tick_stopped;
ts->idle_calls++;
expires = tick_nohz_stop_sched_tick(ts, now, cpu);
if (expires.tv64 > 0LL) {
ts->idle_sleeps++;
ts->idle_expires = expires;
}
if (!was_stopped && ts->tick_stopped)
ts->idle_jiffies = ts->last_jiffies;
}
}
/**
@ -479,7 +500,7 @@ void tick_nohz_idle_enter(void)
* update of the idle time accounting in tick_nohz_start_idle().
*/
ts->inidle = 1;
tick_nohz_stop_sched_tick(ts);
__tick_nohz_idle_enter(ts);
local_irq_enable();
}
@ -499,7 +520,7 @@ void tick_nohz_irq_exit(void)
if (!ts->inidle)
return;
tick_nohz_stop_sched_tick(ts);
__tick_nohz_idle_enter(ts);
}
/**
@ -517,7 +538,7 @@ ktime_t tick_nohz_get_sleep_length(void)
static void tick_nohz_restart(struct tick_sched *ts, ktime_t now)
{
hrtimer_cancel(&ts->sched_timer);
hrtimer_set_expires(&ts->sched_timer, ts->idle_tick);
hrtimer_set_expires(&ts->sched_timer, ts->last_tick);
while (1) {
/* Forward the time to expire in the future */
@ -540,6 +561,41 @@ static void tick_nohz_restart(struct tick_sched *ts, ktime_t now)
}
}
static void tick_nohz_restart_sched_tick(struct tick_sched *ts, ktime_t now)
{
/* Update jiffies first */
select_nohz_load_balancer(0);
tick_do_update_jiffies64(now);
update_cpu_load_nohz();
touch_softlockup_watchdog();
/*
* Cancel the scheduled timer and restore the tick
*/
ts->tick_stopped = 0;
ts->idle_exittime = now;
tick_nohz_restart(ts, now);
}
static void tick_nohz_account_idle_ticks(struct tick_sched *ts)
{
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
unsigned long ticks;
/*
* We stopped the tick in idle. Update process times would miss the
* time we slept as update_process_times does only a 1 tick
* accounting. Enforce that this is accounted to idle !
*/
ticks = jiffies - ts->idle_jiffies;
/*
* We might be one off. Do not randomly account a huge number of ticks!
*/
if (ticks && ticks < LONG_MAX)
account_idle_ticks(ticks);
#endif
}
/**
* tick_nohz_idle_exit - restart the idle tick from the idle task
*
@ -551,9 +607,6 @@ void tick_nohz_idle_exit(void)
{
int cpu = smp_processor_id();
struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
unsigned long ticks;
#endif
ktime_t now;
local_irq_disable();
@ -568,39 +621,11 @@ void tick_nohz_idle_exit(void)
if (ts->idle_active)
tick_nohz_stop_idle(cpu, now);
if (!ts->tick_stopped) {
local_irq_enable();
return;
if (ts->tick_stopped) {
tick_nohz_restart_sched_tick(ts, now);
tick_nohz_account_idle_ticks(ts);
}
/* Update jiffies first */
select_nohz_load_balancer(0);
tick_do_update_jiffies64(now);
update_cpu_load_nohz();
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
/*
* We stopped the tick in idle. Update process times would miss the
* time we slept as update_process_times does only a 1 tick
* accounting. Enforce that this is accounted to idle !
*/
ticks = jiffies - ts->idle_jiffies;
/*
* We might be one off. Do not randomly account a huge number of ticks!
*/
if (ticks && ticks < LONG_MAX)
account_idle_ticks(ticks);
#endif
touch_softlockup_watchdog();
/*
* Cancel the scheduled timer and restore the tick
*/
ts->tick_stopped = 0;
ts->idle_exittime = now;
tick_nohz_restart(ts, now);
local_irq_enable();
}
@ -804,7 +829,8 @@ static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer)
*/
if (ts->tick_stopped) {
touch_softlockup_watchdog();
ts->idle_jiffies++;
if (idle_cpu(cpu))
ts->idle_jiffies++;
}
update_process_times(user_mode(regs));
profile_tick(CPU_PROFILING);

2
kernel/time/timekeeping.c
View File

@ -962,6 +962,7 @@ static cycle_t logarithmic_accumulation(cycle_t offset, int shift)
timekeeper.xtime.tv_sec++;
leap = second_overflow(timekeeper.xtime.tv_sec);
timekeeper.xtime.tv_sec += leap;
timekeeper.wall_to_monotonic.tv_sec -= leap;
}
/* Accumulate raw time */
@ -1077,6 +1078,7 @@ static void update_wall_time(void)
timekeeper.xtime.tv_sec++;
leap = second_overflow(timekeeper.xtime.tv_sec);
timekeeper.xtime.tv_sec += leap;
timekeeper.wall_to_monotonic.tv_sec -= leap;
}
timekeeping_update(false);

4
kernel/time/timer_list.c
View File

@ -167,7 +167,7 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now)
{
struct tick_sched *ts = tick_get_tick_sched(cpu);
P(nohz_mode);
P_ns(idle_tick);
P_ns(last_tick);
P(tick_stopped);
P(idle_jiffies);
P(idle_calls);
@ -259,7 +259,7 @@ static int timer_list_show(struct seq_file *m, void *v)
u64 now = ktime_to_ns(ktime_get());
int cpu;
SEQ_printf(m, "Timer List Version: v0.6\n");
SEQ_printf(m, "Timer List Version: v0.7\n");
SEQ_printf(m, "HRTIMER_MAX_CLOCK_BASES: %d\n", HRTIMER_MAX_CLOCK_BASES);
SEQ_printf(m, "now at %Ld nsecs\n", (unsigned long long)now);

5
lib/btree.c
View File

@ -319,8 +319,8 @@ void *btree_get_prev(struct btree_head *head, struct btree_geo *geo,
if (head->height == 0)
return NULL;
retry:
longcpy(key, __key, geo->keylen);
retry:
dec_key(geo, key);
node = head->node;
@ -351,7 +351,7 @@ retry:
}
miss:
if (retry_key) {
__key = retry_key;
longcpy(key, retry_key, geo->keylen);
retry_key = NULL;
goto retry;
}
@ -509,6 +509,7 @@ retry:
int btree_insert(struct btree_head *head, struct btree_geo *geo,
unsigned long *key, void *val, gfp_t gfp)
{
BUG_ON(!val);
return btree_insert_level(head, geo, key, val, 1, gfp);
}
EXPORT_SYMBOL_GPL(btree_insert);

7
lib/raid6/recov.c
View File

@ -22,8 +22,8 @@
#include <linux/raid/pq.h>
/* Recover two failed data blocks. */
void raid6_2data_recov_intx1(int disks, size_t bytes, int faila, int failb,
void **ptrs)
static void raid6_2data_recov_intx1(int disks, size_t bytes, int faila,
int failb, void **ptrs)
{
u8 *p, *q, *dp, *dq;
u8 px, qx, db;
@ -66,7 +66,8 @@ void raid6_2data_recov_intx1(int disks, size_t bytes, int faila, int failb,
}
/* Recover failure of one data block plus the P block */
void raid6_datap_recov_intx1(int disks, size_t bytes, int faila, void **ptrs)
static void raid6_datap_recov_intx1(int disks, size_t bytes, int faila,
void **ptrs)
{
u8 *p, *q, *dq;
const u8 *qmul; /* Q multiplier table */

7
lib/raid6/recov_ssse3.c
View File

@ -19,8 +19,8 @@ static int raid6_has_ssse3(void)
boot_cpu_has(X86_FEATURE_SSSE3);
}
void raid6_2data_recov_ssse3(int disks, size_t bytes, int faila, int failb,
void **ptrs)
static void raid6_2data_recov_ssse3(int disks, size_t bytes, int faila,
int failb, void **ptrs)
{
u8 *p, *q, *dp, *dq;
const u8 *pbmul; /* P multiplier table for B data */
@ -194,7 +194,8 @@ void raid6_2data_recov_ssse3(int disks, size_t bytes, int faila, int failb,
}
void raid6_datap_recov_ssse3(int disks, size_t bytes, int faila, void **ptrs)
static void raid6_datap_recov_ssse3(int disks, size_t bytes, int faila,
void **ptrs)
{
u8 *p, *q, *dq;
const u8 *qmul; /* Q multiplier table */

4
mm/oom_kill.c
View File

@ -183,7 +183,7 @@ static bool oom_unkillable_task(struct task_struct *p,
unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg,
const nodemask_t *nodemask, unsigned long totalpages)
{
unsigned long points;
long points;
if (oom_unkillable_task(p, memcg, nodemask))
return 0;
@ -223,7 +223,7 @@ unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg,
* Never return 0 for an eligible task regardless of the root bonus and
* oom_score_adj (oom_score_adj can't be OOM_SCORE_ADJ_MIN here).
*/
return points ? points : 1;
return points > 0 ? points : 1;
}
/*

57
mm/shmem.c
View File

@ -683,10 +683,21 @@ static int shmem_unuse_inode(struct shmem_inode_info *info,
mutex_lock(&shmem_swaplist_mutex);
/*
* We needed to drop mutex to make that restrictive page
* allocation; but the inode might already be freed by now,
* and we cannot refer to inode or mapping or info to check.
* However, we do hold page lock on the PageSwapCache page,
* so can check if that still has our reference remaining.
* allocation, but the inode might have been freed while we
* dropped it: although a racing shmem_evict_inode() cannot
* complete without emptying the radix_tree, our page lock
* on this swapcache page is not enough to prevent that -
* free_swap_and_cache() of our swap entry will only
* trylock_page(), removing swap from radix_tree whatever.
*
* We must not proceed to shmem_add_to_page_cache() if the
* inode has been freed, but of course we cannot rely on
* inode or mapping or info to check that. However, we can
* safely check if our swap entry is still in use (and here
* it can't have got reused for another page): if it's still
* in use, then the inode cannot have been freed yet, and we
* can safely proceed (if it's no longer in use, that tells
* nothing about the inode, but we don't need to unuse swap).
*/
if (!page_swapcount(*pagep))
error = -ENOENT;
@ -730,9 +741,9 @@ int shmem_unuse(swp_entry_t swap, struct page *page)
/*
* There's a faint possibility that swap page was replaced before
* caller locked it: it will come back later with the right page.
* caller locked it: caller will come back later with the right page.
*/
if (unlikely(!PageSwapCache(page)))
if (unlikely(!PageSwapCache(page) || page_private(page) != swap.val))
goto out;
/*
@ -995,21 +1006,15 @@ static int shmem_replace_page(struct page **pagep, gfp_t gfp,
newpage = shmem_alloc_page(gfp, info, index);
if (!newpage)
return -ENOMEM;
VM_BUG_ON(shmem_should_replace_page(newpage, gfp));
*pagep = newpage;
page_cache_get(newpage);
copy_highpage(newpage, oldpage);
flush_dcache_page(newpage);
VM_BUG_ON(!PageLocked(oldpage));
__set_page_locked(newpage);
VM_BUG_ON(!PageUptodate(oldpage));
SetPageUptodate(newpage);
VM_BUG_ON(!PageSwapBacked(oldpage));
SetPageSwapBacked(newpage);
VM_BUG_ON(!swap_index);
set_page_private(newpage, swap_index);
VM_BUG_ON(!PageSwapCache(oldpage));
SetPageSwapCache(newpage);
/*
@ -1019,13 +1024,24 @@ static int shmem_replace_page(struct page **pagep, gfp_t gfp,
spin_lock_irq(&swap_mapping->tree_lock);
error = shmem_radix_tree_replace(swap_mapping, swap_index, oldpage,
newpage);
__inc_zone_page_state(newpage, NR_FILE_PAGES);
__dec_zone_page_state(oldpage, NR_FILE_PAGES);
if (!error) {
__inc_zone_page_state(newpage, NR_FILE_PAGES);
__dec_zone_page_state(oldpage, NR_FILE_PAGES);
}
spin_unlock_irq(&swap_mapping->tree_lock);
BUG_ON(error);
mem_cgroup_replace_page_cache(oldpage, newpage);
lru_cache_add_anon(newpage);
if (unlikely(error)) {
/*
* Is this possible? I think not, now that our callers check
* both PageSwapCache and page_private after getting page lock;
* but be defensive. Reverse old to newpage for clear and free.
*/
oldpage = newpage;
} else {
mem_cgroup_replace_page_cache(oldpage, newpage);
lru_cache_add_anon(newpage);
*pagep = newpage;
}
ClearPageSwapCache(oldpage);
set_page_private(oldpage, 0);
@ -1033,7 +1049,7 @@ static int shmem_replace_page(struct page **pagep, gfp_t gfp,
unlock_page(oldpage);
page_cache_release(oldpage);
page_cache_release(oldpage);
return 0;
return error;
}
/*
@ -1107,7 +1123,8 @@ repeat:
/* We have to do this with page locked to prevent races */
lock_page(page);
if (!PageSwapCache(page) || page->mapping) {
if (!PageSwapCache(page) || page_private(page) != swap.val ||
page->mapping) {
error = -EEXIST; /* try again */
goto failed;
}

2
tools/perf/MANIFEST
View File

@ -1,4 +1,6 @@
tools/perf
tools/scripts
tools/lib/traceevent
include/linux/const.h
include/linux/perf_event.h
include/linux/rbtree.h

4
tools/perf/builtin-report.c
View File

@ -152,7 +152,7 @@ static int perf_evsel__add_hist_entry(struct perf_evsel *evsel,
if (symbol_conf.use_callchain) {
err = callchain_append(he->callchain,
&evsel->hists.callchain_cursor,
&callchain_cursor,
sample->period);
if (err)
return err;
@ -162,7 +162,7 @@ static int perf_evsel__add_hist_entry(struct perf_evsel *evsel,
* so we don't allocated the extra space needed because the stdio
* code will not use it.
*/
if (al->sym != NULL && use_browser > 0) {
if (he->ms.sym != NULL && use_browser > 0) {
struct annotation *notes = symbol__annotation(he->ms.sym);
assert(evsel != NULL);

8
tools/perf/builtin-stat.c
View File

@ -1129,7 +1129,7 @@ static int add_default_attributes(void)
return 0;
if (!evsel_list->nr_entries) {
if (perf_evlist__add_attrs_array(evsel_list, default_attrs) < 0)
if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
return -1;
}
@ -1139,21 +1139,21 @@ static int add_default_attributes(void)
return 0;
/* Append detailed run extra attributes: */
if (perf_evlist__add_attrs_array(evsel_list, detailed_attrs) < 0)
if (perf_evlist__add_default_attrs(evsel_list, detailed_attrs) < 0)
return -1;
if (detailed_run < 2)
return 0;
/* Append very detailed run extra attributes: */
if (perf_evlist__add_attrs_array(evsel_list, very_detailed_attrs) < 0)
if (perf_evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0)
return -1;
if (detailed_run < 3)
return 0;
/* Append very, very detailed run extra attributes: */
return perf_evlist__add_attrs_array(evsel_list, very_very_detailed_attrs);
return perf_evlist__add_default_attrs(evsel_list, very_very_detailed_attrs);
}
int cmd_stat(int argc, const char **argv, const char *prefix __used)

2
tools/perf/builtin-top.c
View File

@ -787,7 +787,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
}
if (symbol_conf.use_callchain) {
err = callchain_append(he->callchain, &evsel->hists.callchain_cursor,
err = callchain_append(he->callchain, &callchain_cursor,
sample->period);
if (err)
return;

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