[PATCH] i386: use smp_call_function_single()
It will execure cpuid only on the cpu we need.
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Andi Kleen <ak@suse.de>
diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c
index 4da75fa..eeae0d9 100644
--- a/arch/i386/kernel/cpuid.c
+++ b/arch/i386/kernel/cpuid.c
@@ -48,7 +48,6 @@
#ifdef CONFIG_SMP
struct cpuid_command {
- int cpu;
u32 reg;
u32 *data;
};
@@ -57,8 +56,7 @@
{
struct cpuid_command *cmd = (struct cpuid_command *)cmd_block;
- if (cmd->cpu == smp_processor_id())
- cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
+ cpuid(cmd->reg, &cmd->data[0], &cmd->data[1], &cmd->data[2],
&cmd->data[3]);
}
@@ -70,11 +68,10 @@
if (cpu == smp_processor_id()) {
cpuid(reg, &data[0], &data[1], &data[2], &data[3]);
} else {
- cmd.cpu = cpu;
cmd.reg = reg;
cmd.data = data;
- smp_call_function(cpuid_smp_cpuid, &cmd, 1, 1);
+ smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1, 1);
}
preempt_enable();
}