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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-22 09:13:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-22 09:13:24 -0700 |
| commit | e17fdf5c6778ff77d93dd769910992e4073b9348 (patch) | |
| tree | d1a7ca2b1faf4301b39300fbd82f9b91e605a77e /arch/x86/include | |
| parent | Merge branch 'akpm' (Andrew's patch-bomb) (diff) | |
| parent | x86: Include probe_roms.h in probe_roms.c (diff) | |
| download | linux-dev-e17fdf5c6778ff77d93dd769910992e4073b9348.tar.xz linux-dev-e17fdf5c6778ff77d93dd769910992e4073b9348.zip | |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/asm changes from Ingo Molnar
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Include probe_roms.h in probe_roms.c
x86/32: Print control and debug registers for kerenel context
x86: Tighten dependencies of CPU_SUP_*_32
x86/numa: Improve internode cache alignment
x86: Fix the NMI nesting comments
x86-64: Improve insn scheduling in SAVE_ARGS_IRQ
x86-64: Fix CFI annotations for NMI nesting code
bitops: Add missing parentheses to new get_order macro
bitops: Optimise get_order()
bitops: Adjust the comment on get_order() to describe the size==0 case
x86/spinlocks: Eliminate TICKET_MASK
x86-64: Handle byte-wise tail copying in memcpy() without a loop
x86-64: Fix memcpy() to support sizes of 4Gb and above
x86-64: Fix memset() to support sizes of 4Gb and above
x86-64: Slightly shorten copy_page()
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/spinlock_types.h | 1 |
2 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index a82c2bf504b6..76bfa2cf301d 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -88,14 +88,14 @@ static inline int __ticket_spin_is_locked(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); - return !!(tmp.tail ^ tmp.head); + return tmp.tail != tmp.head; } static inline int __ticket_spin_is_contended(arch_spinlock_t *lock) { struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); - return ((tmp.tail - tmp.head) & TICKET_MASK) > 1; + return (__ticket_t)(tmp.tail - tmp.head) > 1; } #ifndef CONFIG_PARAVIRT_SPINLOCKS diff --git a/arch/x86/include/asm/spinlock_types.h b/arch/x86/include/asm/spinlock_types.h index 8ebd5df7451e..ad0ad07fc006 100644 --- a/arch/x86/include/asm/spinlock_types.h +++ b/arch/x86/include/asm/spinlock_types.h @@ -16,7 +16,6 @@ typedef u32 __ticketpair_t; #endif #define TICKET_SHIFT (sizeof(__ticket_t) * 8) -#define TICKET_MASK ((__ticket_t)((1 << TICKET_SHIFT) - 1)) typedef struct arch_spinlock { union { |