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| author | Baruch Siach <baruch@tkos.co.il> | 2014-01-13 12:27:35 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-01-20 16:19:08 -0300 |
| commit | 3a46817f674389d5fb2f4dce19fbc73ebd1976bb (patch) | |
| tree | 7093c1017538e62dc40f33d602041830411925b2 | |
| parent | 8bac41cbfe2efe55e2b93673b84761ed7dd75f69 (diff) | |
| download | linux-3a46817f674389d5fb2f4dce19fbc73ebd1976bb.tar.bz2 | |
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>
| -rw-r--r-- | tools/perf/perf.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 3c2f213e979d..7daa806d9050 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 |