lkml.org 
[lkml]   [2009]   [Jul]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 05/26] x86/oprofile: Use per_cpu() instead of __get_cpu_var()
Date
__get_cpu_var() calls smp_processor_id(). When the cpu id is already
known, instead use per_cpu() to avoid generating the id again.

Signed-off-by: Robert Richter <robert.richter@amd.com>
---
arch/x86/oprofile/nmi_int.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index e54f6a0..8cd4658 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -294,7 +294,7 @@ static void nmi_cpu_shutdown(void *dummy)
{
unsigned int v;
int cpu = smp_processor_id();
- struct op_msrs *msrs = &__get_cpu_var(cpu_msrs);
+ struct op_msrs *msrs = &per_cpu(cpu_msrs, cpu);

/* restoring APIC_LVTPC can trigger an apic error because the delivery
* mode and vector nr combination can be illegal. That's by design: on
@@ -307,7 +307,7 @@ static void nmi_cpu_shutdown(void *dummy)
apic_write(APIC_LVTERR, v);
nmi_cpu_restore_registers(msrs);
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
- __get_cpu_var(switch_index) = 0;
+ per_cpu(switch_index, cpu) = 0;
#endif
}

--
1.6.3.3



\
 
 \ /
  Last update: 2009-07-28 19:27    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site