Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4a40cb1ec68d021125e37a69a0be79dc16dd41b1
Commit: 4a40cb1ec68d021125e37a69a0be79dc16dd41b1
Parent: cddf7ff766ee53e24ff37f55a897efc90cb3526e
Author: Avi Kivity <[EMAIL PROTECTED]>
AuthorDate: Wed Oct 17 18:04:38 2007 +0200
Committer: Thomas Gleixner <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 20:16:19 2007 +0200
i386: simplify smp_call_function_single() call sequence in cpuid
smp_call_function_single() now knows how to call the function on the
current cpu.
[ tglx: arch/x86 adaptation ]
Cc: H. Peter Anvin <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/kernel/cpuid.c | 22 +++-------------------
1 files changed, 3 insertions(+), 19 deletions(-)
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index dffb102..70dcf91 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -43,8 +43,6 @@
static struct class *cpuid_class;
-#ifdef CONFIG_SMP
-
struct cpuid_command {
u32 reg;
u32 *data;
@@ -62,25 +60,11 @@ static inline void do_cpuid(int cpu, u32 reg, u32 * data)
{
struct cpuid_command cmd;
- preempt_disable();
- if (cpu == smp_processor_id()) {
- cpuid(reg, &data[0], &data[1], &data[2], &data[3]);
- } else {
- cmd.reg = reg;
- cmd.data = data;
+ cmd.reg = reg;
+ cmd.data = data;
- smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
- }
- preempt_enable();
+ smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
}
-#else /* ! CONFIG_SMP */
-
-static inline void do_cpuid(int cpu, u32 reg, u32 * data)
-{
- cpuid(reg, &data[0], &data[1], &data[2], &data[3]);
-}
-
-#endif /* ! CONFIG_SMP */
static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
{
-
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