Messages in this thread Patch in this message | | | From | Baruch Siach <> | Subject | [PATCH v3] perf: add support for the xtensa architecture | Date | Mon, 13 Jan 2014 12:27:35 +0200 |
| |
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: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> --- v2: use the "core ID" field from /proc/cpuinfo (Max Filippov)
v3: add testing and kernel dependency information (Ingo Molnar) --- tools/perf/perf.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index b079304bd53d..e441864dbe03 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 -- 1.8.5.2
| |