Messages in this thread Patch in this message | | | Date | Thu, 23 Jan 2014 09:03:47 -0800 | From | tip-bot for Baruch Siach <> | Subject | [tip:perf/urgent] perf tools: Add support for the xtensa architecture |
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Commit-ID: 3a46817f674389d5fb2f4dce19fbc73ebd1976bb Gitweb: http://git.kernel.org/tip/3a46817f674389d5fb2f4dce19fbc73ebd1976bb Author: Baruch Siach <baruch@tkos.co.il> AuthorDate: Mon, 13 Jan 2014 12:27:35 +0200 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Mon, 20 Jan 2014 16:19:08 -0300
perf tools: Add support for the xtensa architecture
Tested using kernel tracepoints on a QEMU simulated environment.
Kernel support for perf depends on the patch "xtensa: enable HAVE_PERF_EVENTS", which is scheduled for v3.14.
Hardware performance counters are not supported under xtensa yet.
Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-xtensa@linux-xtensa.org Link: http://lkml.kernel.org/r/aafcdb22f04e2d3188d2938528939481be56b649.1389608855.git.baruch@tkos.co.il Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/perf.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 3c2f213..7daa806 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -132,6 +132,13 @@ #define CPUINFO_PROC "CPU" #endif +#ifdef __xtensa__ +#define mb() asm volatile("memw" ::: "memory") +#define wmb() asm volatile("memw" ::: "memory") +#define rmb() asm volatile("" ::: "memory") +#define CPUINFO_PROC "core ID" +#endif + #define barrier() asm volatile ("" ::: "memory") #ifndef cpu_relax
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