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Commit e768aee8 authored by Livio Soares's avatar Livio Soares Committed by Ingo Molnar
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perf, x86: Small fix to cpuid10_edx 



Fixes to 'cpuid10_edx' to comply with Intel documentation.
According to the Intel Manual, Volume 2A, Table 3-12, the cpuid for
architecture performance monitoring returns, in EDX, two pieces of
information:

  1) Number of fixed-function counters (5 bits, not 4)
  2) Width of fixed-function counters (8 bits)

Signed-off-by: default avatarLivio Soares <livio@eecg.toronto.edu>
Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent becf6c97

arch/x86/include/asm/perf_event.h

+3 −2
Original line number Diff line number Diff line
@@ -68,8 +68,9 @@ union cpuid10_eax { 


union cpuid10_edx {

	struct {

		unsigned int num_counters_fixed:4;

		unsigned int reserved:28;

		unsigned int num_counters_fixed:5;

		unsigned int bit_width_fixed:8;

		unsigned int reserved:19;

	} split;

	unsigned int full;

};