diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-22 18:56:59 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-25 12:37:30 +0300 |
| commit | 3258abe0991590a182be0a20ef6b79b65fe2c9cd (patch) | |
| tree | 45ee2c59fa18f690d5fc4f3f61eb04c866f71288 /tools/perf/trace | |
| parent | 522283fec7d3f312224360da48057e923ee22765 (diff) | |
| download | linux-3258abe0991590a182be0a20ef6b79b65fe2c9cd.tar.xz | |
perf trace beauty futex: Beautify FUTEX_BITSET_MATCH_ANY
E.g.:
# strace -e futex -p 14437
strace: Process 14437 attached
futex(0x7f46f4808d70, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f46f24e68b0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, {tv_sec=1516636744, tv_nsec=221969000}, 0xffffffff) = -1 ETIMEDOUT (Connection timed out)
<detached ...>
#
Should pretty print that 0xffffffff value, like:
# trace -e futex --tid 14437
0.028 ( 0.005 ms): futex(uaddr: 0x7f46f4808d70, op: WAKE|PRIV, val: 1 ) = 0
0.037 (1000.092 ms): futex(uaddr: 0x7f46f24e68b0, op: WAIT_BITSET|PRIV|CLKRT, utime: 0x7f46f23fedf0, val3: MATCH_ANY) = -1 ETIMEDOUT Connection timed out
^C#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-raef6e352la90600yksthao1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/trace')
| -rw-r--r-- | tools/perf/trace/beauty/futex_val3.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/trace/beauty/futex_val3.c b/tools/perf/trace/beauty/futex_val3.c new file mode 100644 index 000000000000..26f6b3253511 --- /dev/null +++ b/tools/perf/trace/beauty/futex_val3.c @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/futex.h> + +#ifndef FUTEX_BITSET_MATCH_ANY +#define FUTEX_BITSET_MATCH_ANY 0xffffffff +#endif + +static size_t syscall_arg__scnprintf_futex_val3(char *bf, size_t size, struct syscall_arg *arg) +{ + unsigned int bitset = arg->val; + + if (bitset == FUTEX_BITSET_MATCH_ANY) + return scnprintf(bf, size, "MATCH_ANY"); + + return scnprintf(bf, size, "%#xd", bitset); +} + +#define SCA_FUTEX_VAL3 syscall_arg__scnprintf_futex_val3 |