From: Arnaldo Carvalho de Melo <a...@redhat.com> When failing to read the tracepoint event format, like currently with sys_execve, that is not defined via SYSCALL_DEFINE macros and thus doesn't have an entry in:
$ ls -d /sys/kernel/debug/tracing/events/syscalls/sys_enter_*exec* /sys/kernel/debug/tracing/events/syscalls/sys_enter_kexec_load $ Cc: David Ahern <dsah...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Mike Galbraith <efa...@gmx.de> Cc: Namhyung Kim <namhy...@gmail.com> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Cc: Steven Rostedt <rost...@goodmis.org> Cc: Thomas Gleixner <t...@linutronix.de> echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org Link: http://lkml.kernel.org/n/tip-q3ak0j8b81yxylykq5wp2...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/builtin-trace.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index fb83cfe..ba05510 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -278,7 +278,10 @@ static struct syscall *trace__syscall_info(struct trace *trace, return &trace->syscalls.table[id]; out_cant_read: - printf("Problems reading syscall %d information\n", id); + printf("Problems reading syscall %d", id); + if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) + printf("(%s)", trace->syscalls.table[id].name); + puts(" information"); return NULL; } -- 1.7.9.2.358.g22243 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
