forked from Minki/linux
Xtensa patchset for v3.11-rc1
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJR3gHDAAoJEI9vqH3mFV2slu4QAIRGqonB3fbRi8OnBJDwrpDY 4U8MG6uvz1tReBI+BdSXBCxF2CSCINxt2pDzEmQo+1suBfXRDOa5haCUHoLWEMHS za2i5bOdsN1U8fio1OFRFn6hdP7L5Xy2YBTZN5ufj9pYA1hkaECdMufWUkM7hklY H21zomT+NLiOEAgB5W4JpHZDzjmjwONPebwBiphi0wnWJY0TttK2huZQ/iAK79Fl nu0c8cQ2YG++NSnAgTQ0mmXrZNLp4zb40CJwMdOR1tWllYayhuypJdymfwFX7LjJ YU5MrAPWNjDAzuGYPnFiR9dli26B7aODpBWTanyWYq1HwKxk3RGQjzty/D1izmWh te4qtAhB/sYCgpdMpiMH1bGg6QqkvSJL8raxktFQ1N8ZwuiR3x1Zj6DGI0U3kGLT 7P194njxIV1+4lCuAfVLTzXiYWV5nrtp2mrT6y1hIzWIolvXqDmJvnJzDTMavihL lD2AaLwrkF8rx8kmAFLLA4KqdrmD0IQp79UOyy9KMKhhk9SAD4FqyfuwjsYUrSsN vd2QqBxjE8GAc4MYIqqzIqTIvhfDtNk3cFXGn/lR26AW7H5LWT8DKkB0q67WMAJi /gvGpfnYED+bD2y0DfkCopGnpNWWXyXf1/mifbZH3jNvaWYAplKpy7eVuvPLgg1E 7eyVBIVnS2iNYkFAy5jG =qScd -----END PGP SIGNATURE----- Merge tag 'xtensa-next-20130710' of git://github.com/czankel/xtensa-linux Pull Xtensa updates from Chris Zankel. * tag 'xtensa-next-20130710' of git://github.com/czankel/xtensa-linux: (22 commits) xtensa: remove the second argument of __bio_kmap_atomic() xtensa: add static function tracer support xtensa: Flat DeviceTree copy not future-safe xtensa: check TLB sanity on return to userspace xtensa: adjust boot parameters address when INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is selected xtensa: bootparams: fix typo xtensa: tell git to ignore generated .dtb files xtensa: ccount based sched_clock xtensa: ccount based clockevent implementation xtensa: consolidate ccount access routines xtensa: cleanup ccount frequency tracking xtensa: timex.h: remove unused symbols xtensa: tell git to ignore copied zlib source files xtensa: fix section mismatch in pcibios_fixup_bus xtensa: ISS: fix section mismatch in iss_net_setup arch: xtensa: include: asm: compiling issue, need cmpxchg64() defined. xtensa: xtfpga: fix section mismatch xtensa: remove unused platform_init_irq() xtensa: tell git to ignore generated files xtensa: flush TLB entries for pages of non-current mm correctly ...
This commit is contained in:
Linus Torvalds
commit
d4d1cda6ef
@ -6,10 +6,12 @@ config XTENSA
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select ARCH_WANT_FRAME_POINTERS
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select HAVE_IDE
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select GENERIC_ATOMIC64
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select GENERIC_CLOCKEVENTS
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select HAVE_GENERIC_HARDIRQS
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select VIRT_TO_BUS
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select GENERIC_IRQ_SHOW
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select GENERIC_CPU_DEVICES
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select GENERIC_SCHED_CLOCK
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select MODULES_USE_ELF_RELA
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select GENERIC_PCI_IOMAP
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select ARCH_WANT_IPC_PARSE_VERSION
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@ -17,6 +19,7 @@ config XTENSA
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select CLONE_BACKWARDS
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select IRQ_DOMAIN
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select HAVE_OPROFILE
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select HAVE_FUNCTION_TRACER
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help
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Xtensa processors are 32-bit RISC machines designed by Tensilica
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primarily for embedded systems. These processors are both
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@ -2,6 +2,16 @@ menu "Kernel hacking"
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source "lib/Kconfig.debug"
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config DEBUG_TLB_SANITY
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bool "Debug TLB sanity"
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depends on DEBUG_KERNEL
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help
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Enable this to turn on TLB sanity check on each entry to userspace.
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This check can spot missing TLB invalidation/wrong PTE permissions/
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premature page freeing.
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If unsure, say N.
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config LD_NO_RELAX
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bool "Disable linker relaxation"
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default n
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3
arch/xtensa/boot/.gitignore
vendored
Normal file
3
arch/xtensa/boot/.gitignore
vendored
Normal file
@ -0,0 +1,3 @@
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uImage
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zImage.redboot
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*.dtb
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1
arch/xtensa/boot/boot-elf/.gitignore
vendored
Normal file
1
arch/xtensa/boot/boot-elf/.gitignore
vendored
Normal file
@ -0,0 +1 @@
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boot.lds
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3
arch/xtensa/boot/lib/.gitignore
vendored
Normal file
3
arch/xtensa/boot/lib/.gitignore
vendored
Normal file
@ -0,0 +1,3 @@
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inffast.c
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inflate.c
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inftrees.c
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@ -7,6 +7,13 @@ zlib := inffast.c inflate.c inftrees.c
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lib-y += $(zlib:.c=.o) zmem.o
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ccflags-y := -Ilib/zlib_inflate
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ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_inflate.o = -pg
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CFLAGS_REMOVE_zmem.o = -pg
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CFLAGS_REMOVE_inftrees.o = -pg
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CFLAGS_REMOVE_inffast.o = -pg
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endif
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quiet_cmd_copy_zlib = COPY $@
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cmd_copy_zlib = cat $< > $@
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@ -20,7 +20,7 @@
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#define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/
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#define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */
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#define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */
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#define BP_TAG_SERIAL_BAUSRATE 0x1004 /* baud rate of current console. */
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#define BP_TAG_SERIAL_BAUDRATE 0x1004 /* baud rate of current console. */
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#define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */
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#define BP_TAG_FDT 0x1006 /* flat device tree addr */
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@ -93,6 +93,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
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((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
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(unsigned long)(n), sizeof(*(ptr))))
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#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
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#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
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/*
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* xchg_u32
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@ -12,7 +12,7 @@
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#ifndef _XTENSA_DELAY_H
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#define _XTENSA_DELAY_H
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#include <asm/processor.h>
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#include <asm/timex.h>
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#include <asm/param.h>
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extern unsigned long loops_per_jiffy;
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@ -24,24 +24,17 @@ static inline void __delay(unsigned long loops)
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: "=r" (loops) : "0" (loops));
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}
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static __inline__ u32 xtensa_get_ccount(void)
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{
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u32 ccount;
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asm volatile ("rsr %0, ccount\n" : "=r" (ccount));
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return ccount;
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}
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/* For SMP/NUMA systems, change boot_cpu_data to something like
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* local_cpu_data->... where local_cpu_data points to the current
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* cpu. */
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static __inline__ void udelay (unsigned long usecs)
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{
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unsigned long start = xtensa_get_ccount();
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unsigned long start = get_ccount();
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unsigned long cycles = usecs * (loops_per_jiffy / (1000000UL / HZ));
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/* Note: all variables are unsigned (can wrap around)! */
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while (((unsigned long)xtensa_get_ccount()) - start < cycles)
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while (((unsigned long)get_ccount()) - start < cycles)
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;
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}
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@ -13,6 +13,7 @@
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#include <asm/processor.h>
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#define HAVE_ARCH_CALLER_ADDR
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#ifndef __ASSEMBLY__
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#define CALLER_ADDR0 ({ unsigned long a0, a1; \
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__asm__ __volatile__ ( \
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"mov %0, a0\n" \
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@ -24,10 +25,22 @@ extern unsigned long return_address(unsigned level);
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#define CALLER_ADDR1 return_address(1)
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#define CALLER_ADDR2 return_address(2)
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#define CALLER_ADDR3 return_address(3)
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#else
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#else /* CONFIG_FRAME_POINTER */
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#define CALLER_ADDR1 (0)
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#define CALLER_ADDR2 (0)
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#define CALLER_ADDR3 (0)
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#endif
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#endif /* CONFIG_FRAME_POINTER */
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#endif /* __ASSEMBLY__ */
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#ifdef CONFIG_FUNCTION_TRACER
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#define MCOUNT_ADDR ((unsigned long)(_mcount))
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#define MCOUNT_INSN_SIZE 3
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#ifndef __ASSEMBLY__
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extern void _mcount(void);
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#define mcount _mcount
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#endif /* __ASSEMBLY__ */
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#endif /* CONFIG_FUNCTION_TRACER */
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#endif /* _XTENSA_FTRACE_H */
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@ -5,7 +5,7 @@
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Copyright (C) 2001 - 2007 Tensilica Inc.
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* Copyright (C) 2001 - 2013 Tensilica Inc.
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*/
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#ifndef _XTENSA_PGTABLE_H
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@ -64,41 +64,82 @@
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* Virtual memory area. We keep a distance to other memory regions to be
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* on the safe side. We also use this area for cache aliasing.
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*/
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#define VMALLOC_START 0xC0000000
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#define VMALLOC_END 0xC7FEFFFF
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#define TLBTEMP_BASE_1 0xC7FF0000
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#define TLBTEMP_BASE_2 0xC7FF8000
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/*
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* Xtensa Linux config PTE layout (when present):
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* 31-12: PPN
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* 11-6: Software
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* 5-4: RING
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* 3-0: CA
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* For the Xtensa architecture, the PTE layout is as follows:
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*
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* Similar to the Alpha and MIPS ports, we need to keep track of the ref
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* and mod bits in software. We have a software "you can read
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* from this page" bit, and a hardware one which actually lets the
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* process read from the page. On the same token we have a software
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* writable bit and the real hardware one which actually lets the
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* process write to the page.
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* 31------12 11 10-9 8-6 5-4 3-2 1-0
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* +-----------------------------------------+
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* | | Software | HARDWARE |
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* | PPN | ADW | RI |Attribute|
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* +-----------------------------------------+
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* pte_none | MBZ | 01 | 11 | 00 |
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* +-----------------------------------------+
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* present | PPN | 0 | 00 | ADW | RI | CA | wx |
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* +- - - - - - - - - - - - - - - - - - - - -+
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* (PAGE_NONE)| PPN | 0 | 00 | ADW | 01 | 11 | 11 |
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* +-----------------------------------------+
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* swap | index | type | 01 | 11 | 00 |
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* +- - - - - - - - - - - - - - - - - - - - -+
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* file | file offset | 01 | 11 | 10 |
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* +-----------------------------------------+
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*
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* See further below for PTE layout for swapped-out pages.
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* For T1050 hardware and earlier the layout differs for present and (PAGE_NONE)
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* +-----------------------------------------+
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* present | PPN | 0 | 00 | ADW | RI | CA | w1 |
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* +-----------------------------------------+
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* (PAGE_NONE)| PPN | 0 | 00 | ADW | 01 | 01 | 00 |
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* +-----------------------------------------+
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*
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* Legend:
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* PPN Physical Page Number
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* ADW software: accessed (young) / dirty / writable
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* RI ring (0=privileged, 1=user, 2 and 3 are unused)
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* CA cache attribute: 00 bypass, 01 writeback, 10 writethrough
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* (11 is invalid and used to mark pages that are not present)
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* w page is writable (hw)
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* x page is executable (hw)
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* index swap offset / PAGE_SIZE (bit 11-31: 21 bits -> 8 GB)
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* (note that the index is always non-zero)
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* type swap type (5 bits -> 32 types)
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* file offset 26-bit offset into the file, in increments of PAGE_SIZE
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*
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* Notes:
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* - (PROT_NONE) is a special case of 'present' but causes an exception for
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* any access (read, write, and execute).
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* - 'multihit-exception' has the highest priority of all MMU exceptions,
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* so the ring must be set to 'RING_USER' even for 'non-present' pages.
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* - on older hardware, the exectuable flag was not supported and
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* used as a 'valid' flag, so it needs to be always set.
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* - we need to keep track of certain flags in software (dirty and young)
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* to do this, we use write exceptions and have a separate software w-flag.
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* - attribute value 1101 (and 1111 on T1050 and earlier) is reserved
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*/
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#define _PAGE_ATTRIB_MASK 0xf
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#define _PAGE_HW_EXEC (1<<0) /* hardware: page is executable */
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#define _PAGE_HW_WRITE (1<<1) /* hardware: page is writable */
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#define _PAGE_FILE (1<<1) /* non-linear mapping, if !present */
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#define _PAGE_PROTNONE (3<<0) /* special case for VM_PROT_NONE */
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/* None of these cache modes include MP coherency: */
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#define _PAGE_CA_BYPASS (0<<2) /* bypass, non-speculative */
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#define _PAGE_CA_WB (1<<2) /* write-back */
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#define _PAGE_CA_WT (2<<2) /* write-through */
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#define _PAGE_CA_MASK (3<<2)
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#define _PAGE_INVALID (3<<2)
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#define _PAGE_CA_INVALID (3<<2)
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/* We use invalid attribute values to distinguish special pte entries */
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#if XCHAL_HW_VERSION_MAJOR < 2000
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#define _PAGE_HW_VALID 0x01 /* older HW needed this bit set */
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#define _PAGE_NONE 0x04
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#else
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#define _PAGE_HW_VALID 0x00
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#define _PAGE_NONE 0x0f
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#endif
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#define _PAGE_FILE (1<<1) /* file mapped page, only if !present */
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#define _PAGE_USER (1<<4) /* user access (ring=1) */
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@ -108,19 +149,12 @@
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#define _PAGE_DIRTY (1<<7) /* software: page dirty */
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#define _PAGE_ACCESSED (1<<8) /* software: page accessed (read) */
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/* On older HW revisions, we always have to set bit 0 */
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#if XCHAL_HW_VERSION_MAJOR < 2000
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# define _PAGE_VALID (1<<0)
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#else
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# define _PAGE_VALID 0
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#endif
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#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _PAGE_PRESENT (_PAGE_VALID | _PAGE_CA_WB | _PAGE_ACCESSED)
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#ifdef CONFIG_MMU
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#define PAGE_NONE __pgprot(_PAGE_INVALID | _PAGE_USER | _PAGE_PROTNONE)
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#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _PAGE_PRESENT (_PAGE_HW_VALID | _PAGE_CA_WB | _PAGE_ACCESSED)
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#define PAGE_NONE __pgprot(_PAGE_NONE | _PAGE_USER)
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#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER)
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#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_HW_EXEC)
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#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER)
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@ -132,9 +166,9 @@
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#define PAGE_KERNEL_EXEC __pgprot(_PAGE_PRESENT|_PAGE_HW_WRITE|_PAGE_HW_EXEC)
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#if (DCACHE_WAY_SIZE > PAGE_SIZE)
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# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED)
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# define _PAGE_DIRECTORY (_PAGE_HW_VALID | _PAGE_ACCESSED | _PAGE_CA_BYPASS)
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#else
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# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED | _PAGE_CA_WB)
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# define _PAGE_DIRECTORY (_PAGE_HW_VALID | _PAGE_ACCESSED | _PAGE_CA_WB)
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#endif
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#else /* no mmu */
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@ -202,12 +236,16 @@ static inline void pgtable_cache_init(void) { }
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/*
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* pte status.
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*/
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#define pte_none(pte) (pte_val(pte) == _PAGE_INVALID)
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#define pte_present(pte) \
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(((pte_val(pte) & _PAGE_CA_MASK) != _PAGE_INVALID) \
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|| ((pte_val(pte) & _PAGE_PROTNONE) == _PAGE_PROTNONE))
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# define pte_none(pte) (pte_val(pte) == (_PAGE_CA_INVALID | _PAGE_USER))
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#if XCHAL_HW_VERSION_MAJOR < 2000
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# define pte_present(pte) ((pte_val(pte) & _PAGE_CA_MASK) != _PAGE_CA_INVALID)
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#else
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# define pte_present(pte) \
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(((pte_val(pte) & _PAGE_CA_MASK) != _PAGE_CA_INVALID) \
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|| ((pte_val(pte) & _PAGE_ATTRIB_MASK) == _PAGE_NONE))
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#endif
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#define pte_clear(mm,addr,ptep) \
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do { update_pte(ptep, __pte(_PAGE_INVALID)); } while(0)
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do { update_pte(ptep, __pte(_PAGE_CA_INVALID | _PAGE_USER)); } while (0)
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#define pmd_none(pmd) (!pmd_val(pmd))
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#define pmd_present(pmd) (pmd_val(pmd) & PAGE_MASK)
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@ -328,35 +366,23 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
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/*
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* Encode and decode a swap entry.
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*
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* Format of swap pte:
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* bit 0 MBZ
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* bit 1 page-file (must be zero)
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* bits 2 - 3 page hw access mode (must be 11: _PAGE_INVALID)
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* bits 4 - 5 ring protection (must be 01: _PAGE_USER)
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* bits 6 - 10 swap type (5 bits -> 32 types)
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* bits 11 - 31 swap offset / PAGE_SIZE (21 bits -> 8GB)
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* Format of file pte:
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* bit 0 MBZ
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* bit 1 page-file (must be one: _PAGE_FILE)
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* bits 2 - 3 page hw access mode (must be 11: _PAGE_INVALID)
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* bits 4 - 5 ring protection (must be 01: _PAGE_USER)
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* bits 6 - 31 file offset / PAGE_SIZE
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* Encode and decode a swap and file entry.
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*/
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#define SWP_TYPE_BITS 5
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#define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS)
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#define __swp_type(entry) (((entry).val >> 6) & 0x1f)
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#define __swp_offset(entry) ((entry).val >> 11)
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#define __swp_entry(type,offs) \
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((swp_entry_t) {((type) << 6) | ((offs) << 11) | _PAGE_INVALID})
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((swp_entry_t){((type) << 6) | ((offs) << 11) | \
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_PAGE_CA_INVALID | _PAGE_USER})
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#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
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#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
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#define PTE_FILE_MAX_BITS 28
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||||
#define pte_to_pgoff(pte) (pte_val(pte) >> 4)
|
||||
#define PTE_FILE_MAX_BITS 26
|
||||
#define pte_to_pgoff(pte) (pte_val(pte) >> 6)
|
||||
#define pgoff_to_pte(off) \
|
||||
((pte_t) { ((off) << 4) | _PAGE_INVALID | _PAGE_FILE })
|
||||
((pte_t) { ((off) << 6) | _PAGE_CA_INVALID | _PAGE_FILE | _PAGE_USER })
|
||||
|
||||
#endif /* !defined (__ASSEMBLY__) */
|
||||
|
||||
|
||||
@ -29,11 +29,6 @@ extern void platform_init(bp_tag_t*);
|
||||
*/
|
||||
extern void platform_setup (char **);
|
||||
|
||||
/*
|
||||
* platform_init_irq is called from init_IRQ.
|
||||
*/
|
||||
extern void platform_init_irq (void);
|
||||
|
||||
/*
|
||||
* platform_restart is called to restart the system.
|
||||
*/
|
||||
|
||||
@ -35,19 +35,11 @@
|
||||
# error "Bad timer number for Linux configurations!"
|
||||
#endif
|
||||
|
||||
#define LINUX_TIMER_MASK (1L << LINUX_TIMER_INT)
|
||||
|
||||
#define CLOCK_TICK_RATE 1193180 /* (everyone is using this value) */
|
||||
#define CLOCK_TICK_FACTOR 20 /* Factor of both 10^6 and CLOCK_TICK_RATE */
|
||||
|
||||
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
||||
extern unsigned long ccount_per_jiffy;
|
||||
extern unsigned long nsec_per_ccount;
|
||||
#define CCOUNT_PER_JIFFY ccount_per_jiffy
|
||||
#define NSEC_PER_CCOUNT nsec_per_ccount
|
||||
extern unsigned long ccount_freq;
|
||||
#define CCOUNT_PER_JIFFY (ccount_freq / HZ)
|
||||
#else
|
||||
#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
|
||||
#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
1
arch/xtensa/kernel/.gitignore
vendored
Normal file
1
arch/xtensa/kernel/.gitignore
vendored
Normal file
@ -0,0 +1 @@
|
||||
vmlinux.lds
|
||||
@ -11,6 +11,7 @@ obj-y := align.o coprocessor.o entry.o irq.o pci-dma.o platform.o process.o \
|
||||
obj-$(CONFIG_KGDB) += xtensa-stub.o
|
||||
obj-$(CONFIG_PCI) += pci.o
|
||||
obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
|
||||
obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
|
||||
|
||||
AFLAGS_head.o += -mtext-section-literals
|
||||
|
||||
|
||||
@ -458,7 +458,7 @@ common_exception_return:
|
||||
|
||||
_bbsi.l a4, TIF_NEED_RESCHED, 3f
|
||||
_bbsi.l a4, TIF_NOTIFY_RESUME, 2f
|
||||
_bbci.l a4, TIF_SIGPENDING, 4f
|
||||
_bbci.l a4, TIF_SIGPENDING, 5f
|
||||
|
||||
2: l32i a4, a1, PT_DEPC
|
||||
bgeui a4, VALID_DOUBLE_EXCEPTION_ADDRESS, 4f
|
||||
@ -476,6 +476,13 @@ common_exception_return:
|
||||
callx4 a4
|
||||
j 1b
|
||||
|
||||
5:
|
||||
#ifdef CONFIG_DEBUG_TLB_SANITY
|
||||
l32i a4, a1, PT_DEPC
|
||||
bgeui a4, VALID_DOUBLE_EXCEPTION_ADDRESS, 4f
|
||||
movi a4, check_tlb_sanity
|
||||
callx4 a4
|
||||
#endif
|
||||
4: /* Restore optional registers. */
|
||||
|
||||
load_xtregs_opt a1 a2 a4 a5 a6 a7 PT_XTREGS_OPT
|
||||
@ -1792,10 +1799,15 @@ ENTRY(fast_store_prohibited)
|
||||
l32i a0, a0, 0
|
||||
beqz a0, 2f
|
||||
|
||||
/* Note that we assume _PAGE_WRITABLE_BIT is only set if pte is valid.*/
|
||||
/*
|
||||
* Note that we test _PAGE_WRITABLE_BIT only if PTE is present
|
||||
* and is not PAGE_NONE. See pgtable.h for possible PTE layouts.
|
||||
*/
|
||||
|
||||
_PTE_OFFSET(a0, a1, a4)
|
||||
l32i a4, a0, 0 # read pteval
|
||||
movi a1, _PAGE_CA_INVALID
|
||||
ball a4, a1, 2f
|
||||
bbci.l a4, _PAGE_WRITABLE_BIT, 2f
|
||||
|
||||
movi a1, _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_HW_WRITE
|
||||
|
||||
@ -68,6 +68,15 @@ _SetupMMU:
|
||||
|
||||
#ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
|
||||
initialize_mmu
|
||||
#if defined(CONFIG_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
|
||||
rsr a2, excsave1
|
||||
movi a3, 0x08000000
|
||||
bgeu a2, a3, 1f
|
||||
movi a3, 0xd0000000
|
||||
add a2, a2, a3
|
||||
wsr a2, excsave1
|
||||
1:
|
||||
#endif
|
||||
#endif
|
||||
.end no-absolute-literals
|
||||
|
||||
|
||||
50
arch/xtensa/kernel/mcount.S
Normal file
50
arch/xtensa/kernel/mcount.S
Normal file
@ -0,0 +1,50 @@
|
||||
/*
|
||||
* arch/xtensa/kernel/mcount.S
|
||||
*
|
||||
* Xtensa specific mcount support
|
||||
*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2013 Tensilica Inc.
|
||||
*/
|
||||
|
||||
#include <linux/linkage.h>
|
||||
#include <asm/ftrace.h>
|
||||
|
||||
/*
|
||||
* Entry condition:
|
||||
*
|
||||
* a2: a0 of the caller
|
||||
*/
|
||||
|
||||
ENTRY(_mcount)
|
||||
|
||||
entry a1, 16
|
||||
|
||||
movi a4, ftrace_trace_function
|
||||
l32i a4, a4, 0
|
||||
movi a3, ftrace_stub
|
||||
bne a3, a4, 1f
|
||||
retw
|
||||
|
||||
1: xor a7, a2, a1
|
||||
movi a3, 0x3fffffff
|
||||
and a7, a7, a3
|
||||
xor a7, a7, a1
|
||||
|
||||
xor a6, a0, a1
|
||||
and a6, a6, a3
|
||||
xor a6, a6, a1
|
||||
addi a6, a6, -MCOUNT_INSN_SIZE
|
||||
callx4 a4
|
||||
|
||||
retw
|
||||
|
||||
ENDPROC(_mcount)
|
||||
|
||||
ENTRY(ftrace_stub)
|
||||
entry a1, 16
|
||||
retw
|
||||
ENDPROC(ftrace_stub)
|
||||
@ -77,9 +77,9 @@ pcibios_align_resource(void *data, const struct resource *res,
|
||||
|
||||
if (res->flags & IORESOURCE_IO) {
|
||||
if (size > 0x100) {
|
||||
printk(KERN_ERR "PCI: I/O Region %s/%d too large"
|
||||
" (%ld bytes)\n", pci_name(dev),
|
||||
dev->resource - res, size);
|
||||
pr_err("PCI: I/O Region %s/%d too large (%u bytes)\n",
|
||||
pci_name(dev), dev->resource - res,
|
||||
size);
|
||||
}
|
||||
|
||||
if (start & 0x300)
|
||||
@ -174,7 +174,7 @@ static int __init pcibios_init(void)
|
||||
struct pci_controller *pci_ctrl;
|
||||
struct list_head resources;
|
||||
struct pci_bus *bus;
|
||||
int next_busno = 0, i;
|
||||
int next_busno = 0;
|
||||
|
||||
printk("PCI: Probing PCI hardware\n");
|
||||
|
||||
@ -197,7 +197,7 @@ static int __init pcibios_init(void)
|
||||
|
||||
subsys_initcall(pcibios_init);
|
||||
|
||||
void __init pcibios_fixup_bus(struct pci_bus *bus)
|
||||
void pcibios_fixup_bus(struct pci_bus *bus)
|
||||
{
|
||||
if (bus->parent) {
|
||||
/* This is a subordinate bridge */
|
||||
|
||||
@ -29,7 +29,6 @@
|
||||
*/
|
||||
|
||||
_F(void, setup, (char** cmd), { });
|
||||
_F(void, init_irq, (void), { });
|
||||
_F(void, restart, (void), { while(1); });
|
||||
_F(void, halt, (void), { while(1); });
|
||||
_F(void, power_off, (void), { while(1); });
|
||||
@ -42,6 +41,6 @@ _F(void, pcibios_init, (void), { });
|
||||
_F(void, calibrate_ccount, (void),
|
||||
{
|
||||
pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
|
||||
ccount_per_jiffy = 10 * (1000000UL/HZ);
|
||||
ccount_freq = 10 * 1000000UL;
|
||||
});
|
||||
#endif
|
||||
|
||||
@ -152,8 +152,8 @@ static int __init parse_tag_initrd(const bp_tag_t* tag)
|
||||
{
|
||||
meminfo_t* mi;
|
||||
mi = (meminfo_t*)(tag->data);
|
||||
initrd_start = (void*)(mi->start);
|
||||
initrd_end = (void*)(mi->end);
|
||||
initrd_start = __va(mi->start);
|
||||
initrd_end = __va(mi->end);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -164,7 +164,7 @@ __tagtable(BP_TAG_INITRD, parse_tag_initrd);
|
||||
|
||||
static int __init parse_tag_fdt(const bp_tag_t *tag)
|
||||
{
|
||||
dtb_start = (void *)(tag->data[0]);
|
||||
dtb_start = __va(tag->data[0]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -256,7 +256,7 @@ void __init early_init_devtree(void *params)
|
||||
static void __init copy_devtree(void)
|
||||
{
|
||||
void *alloc = early_init_dt_alloc_memory_arch(
|
||||
be32_to_cpu(initial_boot_params->totalsize), 0);
|
||||
be32_to_cpu(initial_boot_params->totalsize), 8);
|
||||
if (alloc) {
|
||||
memcpy(alloc, initial_boot_params,
|
||||
be32_to_cpu(initial_boot_params->totalsize));
|
||||
|
||||
@ -16,6 +16,7 @@
|
||||
#include <linux/sched.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/clocksource.h>
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
@ -23,13 +24,13 @@
|
||||
#include <linux/profile.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/irqdomain.h>
|
||||
#include <linux/sched_clock.h>
|
||||
|
||||
#include <asm/timex.h>
|
||||
#include <asm/platform.h>
|
||||
|
||||
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
||||
unsigned long ccount_per_jiffy; /* per 1/HZ */
|
||||
unsigned long nsec_per_ccount; /* nsec per ccount increment */
|
||||
unsigned long ccount_freq; /* ccount Hz */
|
||||
#endif
|
||||
|
||||
static cycle_t ccount_read(struct clocksource *cs)
|
||||
@ -37,6 +38,11 @@ static cycle_t ccount_read(struct clocksource *cs)
|
||||
return (cycle_t)get_ccount();
|
||||
}
|
||||
|
||||
static u32 notrace ccount_sched_clock_read(void)
|
||||
{
|
||||
return get_ccount();
|
||||
}
|
||||
|
||||
static struct clocksource ccount_clocksource = {
|
||||
.name = "ccount",
|
||||
.rating = 200,
|
||||
@ -44,29 +50,98 @@ static struct clocksource ccount_clocksource = {
|
||||
.mask = CLOCKSOURCE_MASK(32),
|
||||
};
|
||||
|
||||
static int ccount_timer_set_next_event(unsigned long delta,
|
||||
struct clock_event_device *dev);
|
||||
static void ccount_timer_set_mode(enum clock_event_mode mode,
|
||||
struct clock_event_device *evt);
|
||||
static struct ccount_timer_t {
|
||||
struct clock_event_device evt;
|
||||
int irq_enabled;
|
||||
} ccount_timer = {
|
||||
.evt = {
|
||||
.name = "ccount_clockevent",
|
||||
.features = CLOCK_EVT_FEAT_ONESHOT,
|
||||
.rating = 300,
|
||||
.set_next_event = ccount_timer_set_next_event,
|
||||
.set_mode = ccount_timer_set_mode,
|
||||
},
|
||||
};
|
||||
|
||||
static int ccount_timer_set_next_event(unsigned long delta,
|
||||
struct clock_event_device *dev)
|
||||
{
|
||||
unsigned long flags, next;
|
||||
int ret = 0;
|
||||
|
||||
local_irq_save(flags);
|
||||
next = get_ccount() + delta;
|
||||
set_linux_timer(next);
|
||||
if (next - get_ccount() > delta)
|
||||
ret = -ETIME;
|
||||
local_irq_restore(flags);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void ccount_timer_set_mode(enum clock_event_mode mode,
|
||||
struct clock_event_device *evt)
|
||||
{
|
||||
struct ccount_timer_t *timer =
|
||||
container_of(evt, struct ccount_timer_t, evt);
|
||||
|
||||
/*
|
||||
* There is no way to disable the timer interrupt at the device level,
|
||||
* only at the intenable register itself. Since enable_irq/disable_irq
|
||||
* calls are nested, we need to make sure that these calls are
|
||||
* balanced.
|
||||
*/
|
||||
switch (mode) {
|
||||
case CLOCK_EVT_MODE_SHUTDOWN:
|
||||
case CLOCK_EVT_MODE_UNUSED:
|
||||
if (timer->irq_enabled) {
|
||||
disable_irq(evt->irq);
|
||||
timer->irq_enabled = 0;
|
||||
}
|
||||
break;
|
||||
case CLOCK_EVT_MODE_RESUME:
|
||||
case CLOCK_EVT_MODE_ONESHOT:
|
||||
if (!timer->irq_enabled) {
|
||||
enable_irq(evt->irq);
|
||||
timer->irq_enabled = 1;
|
||||
}
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static irqreturn_t timer_interrupt(int irq, void *dev_id);
|
||||
static struct irqaction timer_irqaction = {
|
||||
.handler = timer_interrupt,
|
||||
.flags = IRQF_DISABLED,
|
||||
.flags = IRQF_TIMER,
|
||||
.name = "timer",
|
||||
.dev_id = &ccount_timer,
|
||||
};
|
||||
|
||||
void __init time_init(void)
|
||||
{
|
||||
unsigned int irq;
|
||||
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
||||
printk("Calibrating CPU frequency ");
|
||||
platform_calibrate_ccount();
|
||||
printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ),
|
||||
(int)(ccount_per_jiffy/(10000/HZ))%100);
|
||||
printk("%d.%02d MHz\n", (int)ccount_freq/1000000,
|
||||
(int)(ccount_freq/10000)%100);
|
||||
#endif
|
||||
clocksource_register_hz(&ccount_clocksource, CCOUNT_PER_JIFFY * HZ);
|
||||
|
||||
/* Initialize the linux timer interrupt. */
|
||||
ccount_timer.evt.cpumask = cpumask_of(0);
|
||||
ccount_timer.evt.irq = irq_create_mapping(NULL, LINUX_TIMER_INT);
|
||||
if (WARN(!ccount_timer.evt.irq, "error: can't map timer irq"))
|
||||
return;
|
||||
clockevents_config_and_register(&ccount_timer.evt, ccount_freq, 0xf,
|
||||
0xffffffff);
|
||||
setup_irq(ccount_timer.evt.irq, &timer_irqaction);
|
||||
ccount_timer.irq_enabled = 1;
|
||||
|
||||
irq = irq_create_mapping(NULL, LINUX_TIMER_INT);
|
||||
setup_irq(irq, &timer_irqaction);
|
||||
set_linux_timer(get_ccount() + CCOUNT_PER_JIFFY);
|
||||
setup_sched_clock(ccount_sched_clock_read, 32, ccount_freq);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -75,36 +150,14 @@ void __init time_init(void)
|
||||
|
||||
irqreturn_t timer_interrupt (int irq, void *dev_id)
|
||||
{
|
||||
struct ccount_timer_t *timer = dev_id;
|
||||
struct clock_event_device *evt = &timer->evt;
|
||||
|
||||
unsigned long next;
|
||||
|
||||
next = get_linux_timer();
|
||||
|
||||
again:
|
||||
while ((signed long)(get_ccount() - next) > 0) {
|
||||
|
||||
profile_tick(CPU_PROFILING);
|
||||
#ifndef CONFIG_SMP
|
||||
update_process_times(user_mode(get_irq_regs()));
|
||||
#endif
|
||||
|
||||
xtime_update(1); /* Linux handler in kernel/time/timekeeping */
|
||||
|
||||
/* Note that writing CCOMPARE clears the interrupt. */
|
||||
|
||||
next += CCOUNT_PER_JIFFY;
|
||||
set_linux_timer(next);
|
||||
}
|
||||
evt->event_handler(evt);
|
||||
|
||||
/* Allow platform to do something useful (Wdog). */
|
||||
|
||||
platform_heartbeat();
|
||||
|
||||
/* Make sure we didn't miss any tick... */
|
||||
|
||||
if ((signed long)(get_ccount() - next) > 0)
|
||||
goto again;
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
|
||||
@ -124,3 +124,7 @@ extern long common_exception_return;
|
||||
extern long _spill_registers;
|
||||
EXPORT_SYMBOL(common_exception_return);
|
||||
EXPORT_SYMBOL(_spill_registers);
|
||||
|
||||
#ifdef CONFIG_FUNCTION_TRACER
|
||||
EXPORT_SYMBOL(_mcount);
|
||||
#endif
|
||||
|
||||
@ -64,7 +64,7 @@ void flush_tlb_mm(struct mm_struct *mm)
|
||||
{
|
||||
if (mm == current->active_mm) {
|
||||
unsigned long flags;
|
||||
local_save_flags(flags);
|
||||
local_irq_save(flags);
|
||||
__get_new_mmu_context(mm);
|
||||
__load_mmu_context(mm);
|
||||
local_irq_restore(flags);
|
||||
@ -94,7 +94,7 @@ void flush_tlb_range (struct vm_area_struct *vma,
|
||||
printk("[tlbrange<%02lx,%08lx,%08lx>]\n",
|
||||
(unsigned long)mm->context, start, end);
|
||||
#endif
|
||||
local_save_flags(flags);
|
||||
local_irq_save(flags);
|
||||
|
||||
if (end-start + (PAGE_SIZE-1) <= _TLB_ENTRIES << PAGE_SHIFT) {
|
||||
int oldpid = get_rasid_register();
|
||||
@ -128,9 +128,10 @@ void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
|
||||
if(mm->context == NO_CONTEXT)
|
||||
return;
|
||||
|
||||
local_save_flags(flags);
|
||||
local_irq_save(flags);
|
||||
|
||||
oldpid = get_rasid_register();
|
||||
set_rasid_register(ASID_INSERT(mm->context));
|
||||
|
||||
if (vma->vm_flags & VM_EXEC)
|
||||
invalidate_itlb_mapping(page);
|
||||
@ -140,3 +141,116 @@ void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
|
||||
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_TLB_SANITY
|
||||
|
||||
static unsigned get_pte_for_vaddr(unsigned vaddr)
|
||||
{
|
||||
struct task_struct *task = get_current();
|
||||
struct mm_struct *mm = task->mm;
|
||||
pgd_t *pgd;
|
||||
pmd_t *pmd;
|
||||
pte_t *pte;
|
||||
|
||||
if (!mm)
|
||||
mm = task->active_mm;
|
||||
pgd = pgd_offset(mm, vaddr);
|
||||
if (pgd_none_or_clear_bad(pgd))
|
||||
return 0;
|
||||
pmd = pmd_offset(pgd, vaddr);
|
||||
if (pmd_none_or_clear_bad(pmd))
|
||||
return 0;
|
||||
pte = pte_offset_map(pmd, vaddr);
|
||||
if (!pte)
|
||||
return 0;
|
||||
return pte_val(*pte);
|
||||
}
|
||||
|
||||
enum {
|
||||
TLB_SUSPICIOUS = 1,
|
||||
TLB_INSANE = 2,
|
||||
};
|
||||
|
||||
static void tlb_insane(void)
|
||||
{
|
||||
BUG_ON(1);
|
||||
}
|
||||
|
||||
static void tlb_suspicious(void)
|
||||
{
|
||||
WARN_ON(1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Check that TLB entries with kernel ASID (1) have kernel VMA (>= TASK_SIZE),
|
||||
* and TLB entries with user ASID (>=4) have VMA < TASK_SIZE.
|
||||
*
|
||||
* Check that valid TLB entries either have the same PA as the PTE, or PTE is
|
||||
* marked as non-present. Non-present PTE and the page with non-zero refcount
|
||||
* and zero mapcount is normal for batched TLB flush operation. Zero refcount
|
||||
* means that the page was freed prematurely. Non-zero mapcount is unusual,
|
||||
* but does not necessary means an error, thus marked as suspicious.
|
||||
*/
|
||||
static int check_tlb_entry(unsigned w, unsigned e, bool dtlb)
|
||||
{
|
||||
unsigned tlbidx = w | (e << PAGE_SHIFT);
|
||||
unsigned r0 = dtlb ?
|
||||
read_dtlb_virtual(tlbidx) : read_itlb_virtual(tlbidx);
|
||||
unsigned vpn = (r0 & PAGE_MASK) | (e << PAGE_SHIFT);
|
||||
unsigned pte = get_pte_for_vaddr(vpn);
|
||||
unsigned mm_asid = (get_rasid_register() >> 8) & ASID_MASK;
|
||||
unsigned tlb_asid = r0 & ASID_MASK;
|
||||
bool kernel = tlb_asid == 1;
|
||||
int rc = 0;
|
||||
|
||||
if (tlb_asid > 0 && ((vpn < TASK_SIZE) == kernel)) {
|
||||
pr_err("%cTLB: way: %u, entry: %u, VPN %08x in %s PTE\n",
|
||||
dtlb ? 'D' : 'I', w, e, vpn,
|
||||
kernel ? "kernel" : "user");
|
||||
rc |= TLB_INSANE;
|
||||
}
|
||||
|
||||
if (tlb_asid == mm_asid) {
|
||||
unsigned r1 = dtlb ? read_dtlb_translation(tlbidx) :
|
||||
read_itlb_translation(tlbidx);
|
||||
if ((pte ^ r1) & PAGE_MASK) {
|
||||
pr_err("%cTLB: way: %u, entry: %u, mapping: %08x->%08x, PTE: %08x\n",
|
||||
dtlb ? 'D' : 'I', w, e, r0, r1, pte);
|
||||
if (pte == 0 || !pte_present(__pte(pte))) {
|
||||
struct page *p = pfn_to_page(r1 >> PAGE_SHIFT);
|
||||
pr_err("page refcount: %d, mapcount: %d\n",
|
||||
page_count(p),
|
||||
page_mapcount(p));
|
||||
if (!page_count(p))
|
||||
rc |= TLB_INSANE;
|
||||
else if (page_mapped(p))
|
||||
rc |= TLB_SUSPICIOUS;
|
||||
} else {
|
||||
rc |= TLB_INSANE;
|
||||
}
|
||||
}
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
void check_tlb_sanity(void)
|
||||
{
|
||||
unsigned long flags;
|
||||
unsigned w, e;
|
||||
int bug = 0;
|
||||
|
||||
local_irq_save(flags);
|
||||
for (w = 0; w < DTLB_ARF_WAYS; ++w)
|
||||
for (e = 0; e < (1 << XCHAL_DTLB_ARF_ENTRIES_LOG2); ++e)
|
||||
bug |= check_tlb_entry(w, e, true);
|
||||
for (w = 0; w < ITLB_ARF_WAYS; ++w)
|
||||
for (e = 0; e < (1 << XCHAL_ITLB_ARF_ENTRIES_LOG2); ++e)
|
||||
bug |= check_tlb_entry(w, e, false);
|
||||
if (bug & TLB_INSANE)
|
||||
tlb_insane();
|
||||
if (bug & TLB_SUSPICIOUS)
|
||||
tlb_suspicious();
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_DEBUG_TLB_SANITY */
|
||||
|
||||
@ -700,7 +700,7 @@ struct iss_net_init {
|
||||
|
||||
#define ERR KERN_ERR "iss_net_setup: "
|
||||
|
||||
static int iss_net_setup(char *str)
|
||||
static int __init iss_net_setup(char *str)
|
||||
{
|
||||
struct iss_net_private *device = NULL;
|
||||
struct iss_net_init *new;
|
||||
|
||||
@ -108,13 +108,13 @@ static int simdisk_xfer_bio(struct simdisk *dev, struct bio *bio)
|
||||
sector_t sector = bio->bi_sector;
|
||||
|
||||
bio_for_each_segment(bvec, bio, i) {
|
||||
char *buffer = __bio_kmap_atomic(bio, i, KM_USER0);
|
||||
char *buffer = __bio_kmap_atomic(bio, i);
|
||||
unsigned len = bvec->bv_len >> SECTOR_SHIFT;
|
||||
|
||||
simdisk_transfer(dev, sector, len, buffer,
|
||||
bio_data_dir(bio) == WRITE);
|
||||
sector += len;
|
||||
__bio_kunmap_atomic(bio, KM_USER0);
|
||||
__bio_kunmap_atomic(bio);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -163,7 +163,7 @@ void platform_heartbeat(void)
|
||||
|
||||
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
||||
|
||||
void platform_calibrate_ccount(void)
|
||||
void __init platform_calibrate_ccount(void)
|
||||
{
|
||||
long clk_freq = 0;
|
||||
#ifdef CONFIG_OF
|
||||
@ -179,8 +179,7 @@ void platform_calibrate_ccount(void)
|
||||
if (!clk_freq)
|
||||
clk_freq = *(long *)XTFPGA_CLKFRQ_VADDR;
|
||||
|
||||
ccount_per_jiffy = clk_freq / HZ;
|
||||
nsec_per_ccount = 1000000000UL / clk_freq;
|
||||
ccount_freq = clk_freq;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,4 +1,3 @@
|
||||
#include <asm/delay.h>
|
||||
#include <asm/timex.h>
|
||||
#include <asm/io.h>
|
||||
#include <variant/hardware.h>
|
||||
@ -17,11 +16,10 @@ void platform_calibrate_ccount(void)
|
||||
"1: l32i %0, %2, 0 ;"
|
||||
" beq %0, %1, 1b ;"
|
||||
: "=&a"(u) : "a"(t), "a"(tstamp));
|
||||
b = xtensa_get_ccount();
|
||||
b = get_ccount();
|
||||
if (i == LOOPS)
|
||||
a = b;
|
||||
} while (--i >= 0);
|
||||
b -= a;
|
||||
nsec_per_ccount = (LOOPS * 10000) / b;
|
||||
ccount_per_jiffy = b * (100000UL / (LOOPS * HZ));
|
||||
ccount_freq = b * (100000UL / LOOPS);
|
||||
}
|
||||
|
||||
@ -97,11 +97,11 @@ static inline void *bio_data(struct bio *bio)
|
||||
* permanent PIO fall back, user is probably better off disabling highmem
|
||||
* I/O completely on that queue (see ide-dma for example)
|
||||
*/
|
||||
#define __bio_kmap_atomic(bio, idx, kmtype) \
|
||||
#define __bio_kmap_atomic(bio, idx) \
|
||||
(kmap_atomic(bio_iovec_idx((bio), (idx))->bv_page) + \
|
||||
bio_iovec_idx((bio), (idx))->bv_offset)
|
||||
|
||||
#define __bio_kunmap_atomic(addr, kmtype) kunmap_atomic(addr)
|
||||
#define __bio_kunmap_atomic(addr) kunmap_atomic(addr)
|
||||
|
||||
/*
|
||||
* merge helpers etc
|
||||
|
||||
Loading…
Reference in New Issue
Block a user