On 2014-08-06 at 02:17:55 +0200, Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com> wrote: > powerpc/perf: Implement get_cpu_str() > > With a file like ~/.cache/pmu-events/004d0100-core.json describing > Power8 PMU events, we would need to run: > > perf stat \ > --events-file ~/.cache/pmu-events/004d0100-core.json \ > -e PM_CYC sleep 1 > > With this get_cpu_str(), on Powerpc, we can skip the --events-file option > and run: > > perf stat -e PM_CYC sleep 1 > > Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com> > --- > Note: This patch is based on Andi Kleen's recent patchset > > https://lkml.org/lkml/2014/7/30/693 > > Changelog[v2]: > [Michael Ellerman]: Use PVR instead of AUXV variables > > tools/perf/arch/powerpc/util/header.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/tools/perf/arch/powerpc/util/header.c > b/tools/perf/arch/powerpc/util/header.c > index 6c1b8a7..1bb400e8 100644 > --- a/tools/perf/arch/powerpc/util/header.c > +++ b/tools/perf/arch/powerpc/util/header.c > @@ -6,6 +6,7 @@ > > #include "../../util/header.h" > #include "../../util/util.h" > +#include "../../util/jevents.h" > > #define mfspr(rn) ({unsigned long rval; \ > asm volatile("mfspr %0," __stringify(rn) \ > @@ -32,3 +33,14 @@ get_cpuid(char *buffer, size_t sz) > } > return -1; > } > + > +char * > +get_cpu_str(void) > +{ > Changelog[v2]: > [Michael Ellerman]: Use PVR instead of AUXV variables
This was probably not intended to be here and the patch does not apply due to these lines. > > + char *bufp; > + > + if (asprintf(&bufp, "%.8lx-core", mfspr(SPRN_PVR)) < 0) > + bufp = NULL; > + > + return bufp; > +} > -- > 1.8.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
