On Sun, May 31, 2015 at 09:11:34AM -0700, Andi Kleen wrote:
> From: Andi Kleen <a...@linux.intel.com>
>
> Add a PERF_CPUID variable to override the CPUID of the current CPU.
> This is useful for testing, so that all event lists
.. within a current architecture (x86, powerpc) ..
> can be tested on a single
> system.
>
> v2: Fix double free in earlier version.
> Signed-off-by: Andi Kleen <a...@linux.intel.com>
> ---
> tools/perf/util/pmu.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> index 578a537..5c30f89 100644
> --- a/tools/perf/util/pmu.c
> +++ b/tools/perf/util/pmu.c
> @@ -474,7 +474,11 @@ static int pmu_add_cpu_aliases(void *data)
> struct pmu_event *pe;
> char *cpuid;
>
> - cpuid = get_cpuid_str();
> + cpuid = getenv("PERF_CPUID");
> + if (cpuid)
> + cpuid = strdup(cpuid);
> + if (!cpuid)
> + cpuid = get_cpuid_str();
> if (!cpuid)
> return 0;
I tried and it's hard to actually say you're looking on another
CPU events. Could we advertise the CPUID in perf list? Or at least
some pr_debug print.
thanks,
jirka
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