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Merge branches 'x86-asm-for-linus', 'x86-cleanups-for-linus', 'x86-cpu-for-linus', 'x86-debug-for-linus' and 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull initial trivial x86 stuff from Ingo Molnar.

Various random cleanups and trivial fixes.

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64: Eliminate dead ia32 syscall handlers

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/pci-calgary_64.c: Remove obsoleted simple_strtoul() usage
  x86: Don't continue booting if we can't load the specified initrd
  x86: kernel/dumpstack.c simple_strtoul cleanup
  x86: kernel/check.c simple_strtoul cleanup
  debug: Add CONFIG_READABLE_ASM
  x86: spinlock.h: Remove REG_PTR_MODE

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cache_info: Fix setup of l2/l3 ids

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Avoid double stack traces with show_regs()

* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, microcode: microcode_core.c simple_strtoul cleanup
This commit is contained in:
Linus Torvalds 2012-05-23 10:09:50 -07:00
commit 19bec32d7f
16 changed files with 72 additions and 60 deletions
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10
Makefile
View File

@ -566,6 +566,16 @@ else
KBUILD_CFLAGS += -O2
endif
ifdef CONFIG_READABLE_ASM
# Disable optimizations that make assembler listings hard to read.
# reorder blocks reorders the control in the function
# ipa clone creates specialized cloned functions
# partial inlining inlines only parts of functions
KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
$(call cc-option,-fno-ipa-cp-clone,) \
$(call cc-option,-fno-partial-inlining)
endif
include $(srctree)/arch/$(SRCARCH)/Makefile
ifneq ($(CONFIG_FRAME_WARN),0)

23
arch/x86/ia32/sys_ia32.c
View File

@ -287,11 +287,6 @@ asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act,
return ret;
}
asmlinkage long sys32_alarm(unsigned int seconds)
{
return alarm_setitimer(seconds);
}
asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
int options)
{
@ -300,11 +295,6 @@ asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
/* 32-bit timeval and related flotsam. */
asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2)
{
return sys_sysfs(option, arg1, arg2);
}
asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
struct compat_timespec __user *interval)
{
@ -375,19 +365,6 @@ asmlinkage long sys32_pwrite(unsigned int fd, const char __user *ubuf,
}
asmlinkage long sys32_personality(unsigned long personality)
{
int ret;
if (personality(current->personality) == PER_LINUX32 &&
personality == PER_LINUX)
personality = PER_LINUX32;
ret = sys_personality(personality);
if (ret == PER_LINUX32)
ret = PER_LINUX;
return ret;
}
asmlinkage long sys32_sendfile(int out_fd, int in_fd,
compat_off_t __user *offset, s32 count)
{

1
arch/x86/include/asm/kdebug.h
View File

@ -24,7 +24,6 @@ enum die_val {
extern void printk_address(unsigned long address, int reliable);
extern void die(const char *, struct pt_regs *,long);
extern int __must_check __die(const char *, struct pt_regs *, long);
extern void show_registers(struct pt_regs *regs);
extern void show_trace(struct task_struct *t, struct pt_regs *regs,
unsigned long *sp, unsigned long bp);
extern void __show_regs(struct pt_regs *regs, int all);

2
arch/x86/include/asm/spinlock.h
View File

@ -20,10 +20,8 @@
#ifdef CONFIG_X86_32
# define LOCK_PTR_REG "a"
# define REG_PTR_MODE "k"
#else
# define LOCK_PTR_REG "D"
# define REG_PTR_MODE "q"
#endif
#if defined(CONFIG_X86_32) && \

20
arch/x86/kernel/check.c
View File

@ -27,21 +27,29 @@ static int num_scan_areas;
static __init int set_corruption_check(char *arg)
{
char *end;
ssize_t ret;
unsigned long val;
memory_corruption_check = simple_strtol(arg, &end, 10);
ret = kstrtoul(arg, 10, &val);
if (ret)
return ret;
return (*end == 0) ? 0 : -EINVAL;
memory_corruption_check = val;
return 0;
}
early_param("memory_corruption_check", set_corruption_check);
static __init int set_corruption_check_period(char *arg)
{
char *end;
ssize_t ret;
unsigned long val;
corruption_check_period = simple_strtoul(arg, &end, 10);
ret = kstrtoul(arg, 10, &val);
if (ret)
return ret;
return (*end == 0) ? 0 : -EINVAL;
corruption_check_period = val;
return 0;
}
early_param("memory_corruption_check_period", set_corruption_check_period);

4
arch/x86/kernel/cpu/intel_cacheinfo.c
View File

@ -615,14 +615,14 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
new_l2 = this_leaf.size/1024;
num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
index_msb = get_count_order(num_threads_sharing);
l2_id = c->apicid >> index_msb;
l2_id = c->apicid & ~((1 << index_msb) - 1);
break;
case 3:
new_l3 = this_leaf.size/1024;
num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
index_msb = get_count_order(
num_threads_sharing);
l3_id = c->apicid >> index_msb;
l3_id = c->apicid & ~((1 << index_msb) - 1);
break;
default:
break;

23
arch/x86/kernel/dumpstack.c
View File

@ -271,7 +271,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
current->thread.trap_nr, SIGSEGV) == NOTIFY_STOP)
return 1;
show_registers(regs);
show_regs(regs);
#ifdef CONFIG_X86_32
if (user_mode_vm(regs)) {
sp = regs->sp;
@ -311,16 +311,33 @@ void die(const char *str, struct pt_regs *regs, long err)
static int __init kstack_setup(char *s)
{
ssize_t ret;
unsigned long val;
if (!s)
return -EINVAL;
kstack_depth_to_print = simple_strtoul(s, NULL, 0);
ret = kstrtoul(s, 0, &val);
if (ret)
return ret;
kstack_depth_to_print = val;
return 0;
}
early_param("kstack", kstack_setup);
static int __init code_bytes_setup(char *s)
{
code_bytes = simple_strtoul(s, NULL, 0);
ssize_t ret;
unsigned long val;
if (!s)
return -EINVAL;
ret = kstrtoul(s, 0, &val);
if (ret)
return ret;
code_bytes = val;
if (code_bytes > 8192)
code_bytes = 8192;

2
arch/x86/kernel/dumpstack_32.c
View File

@ -82,7 +82,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
}
void show_registers(struct pt_regs *regs)
void show_regs(struct pt_regs *regs)
{
int i;

2
arch/x86/kernel/dumpstack_64.c
View File

@ -245,7 +245,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
show_trace_log_lvl(task, regs, sp, bp, log_lvl);
}
void show_registers(struct pt_regs *regs)
void show_regs(struct pt_regs *regs)
{
int i;
unsigned long sp;

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

@ -1037,9 +1037,9 @@ int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
"current sp %p does not match saved sp %p\n",
stack_addr(regs), kcb->jprobe_saved_sp);
printk(KERN_ERR "Saved registers for jprobe %p\n", jp);
show_registers(saved_regs);
show_regs(saved_regs);
printk(KERN_ERR "Current registers\n");
show_registers(regs);
show_regs(regs);
BUG();
}
*regs = kcb->jprobe_saved_regs;

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

@ -299,12 +299,11 @@ static ssize_t reload_store(struct device *dev,
{
unsigned long val;
int cpu = dev->id;
int ret = 0;
char *end;
ssize_t ret = 0;
val = simple_strtoul(buf, &end, 0);
if (end == buf)
return -EINVAL;
ret = kstrtoul(buf, 0, &val);
if (ret)
return ret;
if (val == 1) {
get_online_cpus();

2
arch/x86/kernel/nmi.c
View File

@ -209,7 +209,7 @@ io_check_error(unsigned char reason, struct pt_regs *regs)
pr_emerg(
"NMI: IOCK error (debug interrupt?) for reason %02x on CPU %d.\n",
reason, smp_processor_id());
show_registers(regs);
show_regs(regs);
if (panic_on_io_nmi)
panic("NMI IOCK error: Not continuing");

8
arch/x86/kernel/pci-calgary_64.c
View File

@ -1480,8 +1480,9 @@ cleanup:
static int __init calgary_parse_options(char *p)
{
unsigned int bridge;
unsigned long val;
size_t len;
char* endp;
ssize_t ret;
while (*p) {
if (!strncmp(p, "64k", 3))
@ -1512,10 +1513,11 @@ static int __init calgary_parse_options(char *p)
++p;
if (*p == '\0')
break;
bridge = simple_strtoul(p, &endp, 0);
if (p == endp)
ret = kstrtoul(p, 0, &val);
if (ret)
break;
bridge = val;
if (bridge < MAX_PHB_BUS_NUM) {
printk(KERN_INFO "Calgary: disabling "
"translation for PHB %#x\n", bridge);

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

@ -113,12 +113,6 @@ void exit_thread(void)
}
}
void show_regs(struct pt_regs *regs)
{
show_registers(regs);
show_trace(NULL, regs, (unsigned long *)kernel_stack_pointer(regs), 0);
}
void show_regs_common(void)
{
const char *vendor, *product, *board;

7
arch/x86/kernel/setup.c
View File

@ -393,10 +393,9 @@ static void __init reserve_initrd(void)
initrd_start = 0;
if (ramdisk_size >= (end_of_lowmem>>1)) {
memblock_free(ramdisk_image, ramdisk_end - ramdisk_image);
printk(KERN_ERR "initrd too large to handle, "
"disabling initrd\n");
return;
panic("initrd too large to handle, "
"disabling initrd (%lld needed, %lld available)\n",
ramdisk_size, end_of_lowmem>>1);
}
printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image,

9
lib/Kconfig.debug
View File

@ -74,6 +74,15 @@ config STRIP_ASM_SYMS
that look like '.Lxxx') so they don't pollute the output of
get_wchan() and suchlike.
config READABLE_ASM
bool "Generate readable assembler code"
depends on DEBUG_KERNEL
help
Disable some compiler optimizations that tend to generate human unreadable
assembler output. This may make the kernel slightly slower, but it helps
to keep kernel developers who have to stare a lot at assembler listings
sane.
config UNUSED_SYMBOLS
bool "Enable unused/obsolete exported symbols"
default y if X86