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authorAndi Kleen <ak@suse.de>2006-01-11 22:42:45 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-11 19:01:12 -0800
commit39b3a7910556005a7a0d042ecb7ff98bfa84ea57 (patch)
treeefcb2602e6fd198c9af34e726741eb389fa4e292 /include/asm-i386
parent2d52ede9876ba566b583f255fdc43800eea81baa (diff)
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[PATCH] i386/x86-64: Generalize X86_FEATURE_CONSTANT_TSC flag
Define it for i386 too. This is a synthetic flag that signifies that the CPU's TSC runs at a constant P state invariant frequency. Fix up the logic on x86-64/i386 to set it on all known CPUs. Use the AMD defined bit to set it on future AMD CPUs. Cc: venkatesh.pallipadi@intel.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/cpufeature.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-i386/cpufeature.h b/include/asm-i386/cpufeature.h
index ff1187e..c4ec2a4 100644
--- a/include/asm-i386/cpufeature.h
+++ b/include/asm-i386/cpufeature.h
@@ -69,6 +69,7 @@
#define X86_FEATURE_K7 (3*32+ 5) /* Athlon */
#define X86_FEATURE_P3 (3*32+ 6) /* P3 */
#define X86_FEATURE_P4 (3*32+ 7) /* P4 */
+#define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
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