From: Arnaldo Carvalho de Melo <[email protected]> When we don't have syscalls:sys_{enter,exit}_NAME, we had to resort to dumping all the 6 syscall arguments, fix it by providing that info for such syscalls, like 'clone'.
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 | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index f8b7bfdf4ee7..e1988d08911d 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -611,6 +611,7 @@ static struct syscall_fmt { const char *name; const char *alias; struct syscall_arg_fmt arg[6]; + u8 nr_args; bool errpid; bool timeout; bool hexret; @@ -1169,6 +1170,9 @@ static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args) { int idx; + if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0) + nr_args = sc->fmt->nr_args; + sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt)); if (sc->arg_fmt == NULL) return -1; @@ -1413,7 +1417,7 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, * may end up not having any args, like with gettid(), so only * print the raw args when we didn't manage to read it. */ - while (arg.idx < 6) { + while (arg.idx < sc->nr_args) { if (arg.mask & bit) goto next_arg; val = syscall_arg__val(&arg, arg.idx); -- 2.9.4
