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authorStephane Eranian <eranian@hpl.hp.com>2006-12-07 02:14:01 +0100
committerAndi Kleen <andi@basil.nowhere.org>2006-12-07 02:14:01 +0100
commit36b2a8d5aff4cb3ee83d5e40447a8f073bcfe2fb (patch)
treea7883c46dcc89ac79474ff4717ec923043adfd2f /include/asm-x86_64
parentbd1d599518bf11992cc6d5b0df08da4a2b7b0db5 (diff)
downloadlinux-36b2a8d5aff4cb3ee83d5e40447a8f073bcfe2fb.tar.bz2
[PATCH] x86-64: add X86_FEATURE_PEBS and detection
Here is a patch (used by perfmon2) to detect the presence of the Precise Event Based Sampling (PEBS) feature for Intel 64-bit processors. The patch also adds the cpu_has_pebs macro. changelog: - adds X86_FEATURE_PEBS - adds cpu_has_pebs to test for X86_FEATURE_PEBS Signed-off-by: stephane eranian <eranian@hpl.hp.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/cpufeature.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-x86_64/cpufeature.h b/include/asm-x86_64/cpufeature.h
index 65eb39e8f3cc..d280384807ef 100644
--- a/include/asm-x86_64/cpufeature.h
+++ b/include/asm-x86_64/cpufeature.h
@@ -68,6 +68,7 @@
#define X86_FEATURE_FXSAVE_LEAK (3*32+7) /* FIP/FOP/FDP leaks through FXSAVE */
#define X86_FEATURE_UP (3*32+8) /* SMP kernel running on UP */
#define X86_FEATURE_ARCH_PERFMON (3*32+9) /* Intel Architectural PerfMon */
+#define X86_FEATURE_PEBS (3*32+10) /* Precise-Event Based Sampling */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
@@ -113,5 +114,6 @@
#define cpu_has_centaur_mcr 0
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
#define cpu_has_ds boot_cpu_has(X86_FEATURE_DS)
+#define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
#endif /* __ASM_X8664_CPUFEATURE_H */