3258abe099
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>
19 lines
464 B
C
19 lines
464 B
C
// 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
|