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authorTejun Heo <tj@kernel.org>2010-12-18 16:28:55 +0100
committerTejun Heo <tj@kernel.org>2010-12-30 12:20:28 +0100
commit0a3aee0da4402aa19b66e458038533c896fb80c6 (patch)
treeb2c29c0b18218b76cc0e7ed9866a2c12d1e22e3a /arch/x86/kernel/ftrace.c
parent7c83912062c801738d7d19acaf8f7fec25ea663c (diff)
x86: Use this_cpu_ops to optimize code
Go through x86 code and replace __get_cpu_var and get_cpu_var instances that refer to a scalar and are not used for address determinations. Cc: Yinghai Lu <yinghai@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/kernel/ftrace.c')
-rw-r--r--arch/x86/kernel/ftrace.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 3afb33f14d2d..b45246f9a640 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -167,9 +167,9 @@ static void ftrace_mod_code(void)
void ftrace_nmi_enter(void)
{
- __get_cpu_var(save_modifying_code) = modifying_code;
+ __this_cpu_write(save_modifying_code, modifying_code);
- if (!__get_cpu_var(save_modifying_code))
+ if (!__this_cpu_read(save_modifying_code))
return;
if (atomic_inc_return(&nmi_running) & MOD_CODE_WRITE_FLAG) {
@@ -183,7 +183,7 @@ void ftrace_nmi_enter(void)
void ftrace_nmi_exit(void)
{
- if (!__get_cpu_var(save_modifying_code))
+ if (!__this_cpu_read(save_modifying_code))
return;
/* Finish all executions before clearing nmi_running */