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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-07 01:43:19 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-24 23:23:03 +0400 |
| commit | 752fde44fd1c4a411d709c7d4ad0f121f427f234 (patch) | |
| tree | 333fcb269d142c023845a844bc8df32c28c57775 /tools/perf/util/util.h | |
| parent | 9a8e85ad0b61ec0720df7d24392163c2a12626d0 (diff) | |
| download | linux-752fde44fd1c4a411d709c7d4ad0f121f427f234.tar.xz | |
perf trace: Support interrupted syscalls
Using the same strategies as in the tmp.perf/trace2, i.e. the 'trace'
tool implemented by tglx, just updated to the current codebase.
Example:
[root@sandy linux]# perf trace usleep 1 | tail
2.003: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -2128396288
2.017: mmap(addr: 0, len: 4096, prot: 3, flags: 34, fd: 4294967295, off: 0 ) = -2128400384
2.029: arch_prctl(option: 4098, arg2: 140146949441280, arg3: 140146949435392, arg4: 34, arg5: 4294967295) = 0
2.084: mprotect(start: 208741634048, len: 16384, prot: 1 ) = 0
2.098: mprotect(start: 208735956992, len: 4096, prot: 1 ) = 0
2.122: munmap(addr: 140146949447680, len: 91882 ) = 0
2.359: brk(brk: 0 ) = 28987392
2.371: brk(brk: 29122560 ) = 29122560
2.490: nanosleep(rqtp: 140735694241504, rmtp: 0 ) = 0
2.507: exit_group(error_code: 0
[root@sandy linux]#
For now the timestamp and duration are always on, will be selectable.
Also if multiple threads are being monitored, its tid will appear.
The ret output continues to be interpreted a la strace.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ly9ulroru4my5isn0xe9gr0m@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/util.h')
| -rw-r--r-- | tools/perf/util/util.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index a6b83f8ebef8..0d85209db8f1 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -198,6 +198,10 @@ static inline int has_extension(const char *filename, const char *ext) #undef tolower #undef toupper +#ifndef NSEC_PER_MSEC +#define NSEC_PER_MSEC 1000000L +#endif + extern unsigned char sane_ctype[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 |