diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-06-14 14:10:08 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-06-14 14:10:08 +0200 |
| commit | cf230918cda19532e4a5cc4f0d5c82fa7e5e94f6 (patch) | |
| tree | 9eed06e09fbbe3764f47e4da7f8d15b5965f6cb3 /tools/perf/util/perf_regs.c | |
| parent | 4cdf77a828b056258f48a9f6078bd2f77d9704bb (diff) | |
| parent | 4ba96195051be30160af6d5f5f83f9a055ab1f23 (diff) | |
Merge branch 'perf/core' into perf/urgent, to pick up the latest fixes
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 a3539ef30b1..43168fb0d9a 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; } |