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| author | Peter Zijlstra <peterz@infradead.org> | 2013-09-10 12:15:23 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-09-25 14:07:54 +0200 |
| commit | bdb43806589096ac4272fe1307e789846ac08d7c (patch) | |
| tree | c854e7e508193766d5cbdd82e8709cfab5ea3be5 /arch | |
| parent | 01028747559ac6c6f642a7bbd2875cc4f66b2feb (diff) | |
| download | op-kernel-dev-bdb43806589096ac4272fe1307e789846ac08d7c.zip op-kernel-dev-bdb43806589096ac4272fe1307e789846ac08d7c.tar.gz | |
sched: Extract the basic add/sub preempt_count modifiers
Rewrite the preempt_count macros in order to extract the 3 basic
preempt_count value modifiers:
__preempt_count_add()
__preempt_count_sub()
and the new:
__preempt_count_dec_and_test()
And since we're at it anyway, replace the unconventional
$op_preempt_count names with the more conventional preempt_count_$op.
Since these basic operators are equivalent to the previous _notrace()
variants, do away with the _notrace() versions.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-ewbpdbupy9xpsjhg960zwbv8@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/mm/init.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 4 |
2 files changed, 4 insertions, 5 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index e205ef5..1215617 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -124,7 +124,7 @@ void *kmap_coherent(struct page *page, unsigned long addr) BUG_ON(Page_dcache_dirty(page)); - inc_preempt_count(); + pagefault_disable(); idx = (addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1); #ifdef CONFIG_MIPS_MT_SMTC idx += FIX_N_COLOURS * smp_processor_id() + @@ -193,8 +193,7 @@ void kunmap_coherent(void) write_c0_entryhi(old_ctx); EXIT_CRITICAL(flags); #endif - dec_preempt_count(); - preempt_check_resched(); + pagefault_enable(); } void copy_user_highpage(struct page *to, struct page *from, diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 8c8093b..729aa77 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -88,7 +88,7 @@ static inline void conditional_sti(struct pt_regs *regs) static inline void preempt_conditional_sti(struct pt_regs *regs) { - inc_preempt_count(); + preempt_count_inc(); if (regs->flags & X86_EFLAGS_IF) local_irq_enable(); } @@ -103,7 +103,7 @@ static inline void preempt_conditional_cli(struct pt_regs *regs) { if (regs->flags & X86_EFLAGS_IF) local_irq_disable(); - dec_preempt_count(); + preempt_count_dec(); } static int __kprobes |
