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performance counters: x86 support

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Implement performance counters for x86 Intel CPUs.

It's simplified right now: the PERFMON CPU feature is assumed,
which is available in Core2 and later Intel CPUs.

The design is flexible to be extended to more CPU types as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2008-12-03 10:39:53 +01:00
parent e7bc62b6b3
commit 241771ef01
21 changed files with 652 additions and 21 deletions
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2
arch/x86/kernel/cpu/common.c
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@ -17,6 +17,7 @@
#include <asm/mmu_context.h>
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/intel_arch_perfmon.h>
#include <asm/pat.h>
#include <asm/asm.h>
#include <asm/numa.h>
@ -750,6 +751,7 @@ void __init identify_boot_cpu(void)
#else
vgetcpu_set_mode();
#endif
init_hw_perf_counters();
}
void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)