On 11.05.09 17:43:44, Jaswinder Singh Rajput wrote: > On Sun, 2009-05-10 at 08:30 +0200, Ingo Molnar wrote: > > * Jaswinder Singh Rajput <jaswinder@xxxxxxxxxx> wrote: > > > > > > #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */ > > > > should be replaced by > > > > #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Performace Monitor */ > > > > > > > > All x86 cpus which support performance monitor should set this feature. > > > > > > > > > > Currently X86_FEATURE_ARCH_PERFMON is enabled for >= Intel Core2 > > > > > > But Performance monitor is almost supported by all Intel > > > processors. I am adding few MSRs list for reference to see > > > complete list please check arch/x86/kernel/cpu/cpu_debug.c > > > > I think you are confusing two things: > > > > - The 'architectural perfmon' CPU flag, enumerated in CPUID. (this > > is a relatively new CPUID flag that only Intel CPUs at around > > Core2 and later will report.) > > > > - The concept of 'performance monitoring' - which has been present > > in various x86 CPUs starting at the original Pentium (P5) 15 years > > ago or so. > > > > Here is the patch for review for ancient performance monitoring > cpufeature, complete cpu_debug and cpu_feature patches are available > at : > http://git.kernel.org/?p=linux/kernel/git/jaswinder/linux-2.6-tip.git;a=summary > > Subject: [PATCH] x86: Add cpufeature for ancient performance monitoring Jaswinder, which branch is this patch against? It is not tip/perfcounters/core nor tip/master. -Robert -- Advanced Micro Devices, Inc. Operating System Research Center email: robert.richter@xxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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