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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-07-19 15:47:30 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-07-20 09:55:53 -0300 |
| commit | c51bdfecd782eec710237c53137e0fefd032d287 (patch) | |
| tree | 643a080eb2e870f6d3ea89ab9d0042de2c5713e3 /tools/perf/builtin-trace.c | |
| parent | 332337dafc98d88561bf3730f80c59cc93f089e1 (diff) | |
| download | linux-c51bdfecd782eec710237c53137e0fefd032d287.tar.bz2 | |
perf trace: Allow specifying names to syscall arguments formatters
For tracepointless syscalls, like clone, otherwise get them from the
tracepoint's /format file.
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: http://lkml.kernel.org/n/tip-ml5qvv1w5k96ghwhxpzzsmm3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
| -rw-r--r-- | tools/perf/builtin-trace.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index e1988d08911d..6664293584df 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -604,6 +604,7 @@ static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size, struct syscall_arg_fmt { size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg); void *parm; + const char *name; bool show_zero; }; @@ -1349,6 +1350,15 @@ unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx) return val; } +static size_t syscall__scnprintf_name(struct syscall *sc, char *bf, size_t size, + struct syscall_arg *arg) +{ + if (sc->arg_fmt && sc->arg_fmt[arg->idx].name) + return scnprintf(bf, size, "%s: ", sc->arg_fmt[arg->idx].name); + + return scnprintf(bf, size, "arg%d: ", arg->idx); +} + static size_t syscall__scnprintf_val(struct syscall *sc, char *bf, size_t size, struct syscall_arg *arg, unsigned long val) { @@ -1421,8 +1431,9 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, if (arg.mask & bit) goto next_arg; val = syscall_arg__val(&arg, arg.idx); - printed += scnprintf(bf + printed, size - printed, - "%sarg%d: ", printed ? ", " : "", arg.idx); + if (printed) + printed += scnprintf(bf + printed, size - printed, ", "); + printed += syscall__scnprintf_name(sc, bf + printed, size - printed, &arg); printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val); next_arg: ++arg.idx; |