From: Arnaldo Carvalho de Melo <[email protected]> For tracepointless syscalls, like clone, otherwise get them from the tracepoint's /format file.
Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/builtin-trace.c | 15 +++++++++++++-- 1 file 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; -- 2.9.4
