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| author | Ingo Molnar <mingo@kernel.org> | 2014-06-13 08:19:06 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-06-13 08:19:06 +0200 |
| commit | 4ba96195051be30160af6d5f5f83f9a055ab1f23 (patch) | |
| tree | 7af7f287ce8c723393fa014288da900eb03a3641 /tools/perf/util/perf_regs.c | |
| parent | 7184062b94b4bfac08715fb786fd2df399c5d6ee (diff) | |
| parent | 45dc1bb5c1d47f9519e2101f6b073bb4bb1d1f99 (diff) | |
| download | linux-4ba96195051be30160af6d5f5f83f9a055ab1f23.tar.bz2 | |
Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core
Pull perf/core improvements and fixes from Jiri Olsa:
* Honor user freq/interval properly in record command (Namhyung Kim)
* Speedup DWARF unwind (Jiri Olsa)
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/perf_regs.c')
| -rw-r--r-- | tools/perf/util/perf_regs.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/util/perf_regs.c b/tools/perf/util/perf_regs.c index a3539ef30b15..43168fb0d9a2 100644 --- a/tools/perf/util/perf_regs.c +++ b/tools/perf/util/perf_regs.c @@ -1,11 +1,15 @@ #include <errno.h> #include "perf_regs.h" +#include "event.h" int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) { int i, idx = 0; u64 mask = regs->mask; + if (regs->cache_mask & (1 << id)) + goto out; + if (!(mask & (1 << id))) return -EINVAL; @@ -14,6 +18,10 @@ int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) idx++; } - *valp = regs->regs[idx]; + regs->cache_mask |= (1 << id); + regs->cache_regs[id] = regs->regs[idx]; + +out: + *valp = regs->cache_regs[id]; return 0; } |