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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-24 18:44:13 -0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-24 18:44:13 -0200 |
| commit | 814d7a4d2c33657489f7b45bc0b2dcaa0d88edc0 (patch) | |
| tree | 2ccaea4e18d2f3fdb407faf77ff6d0d45f2c068c /tools/perf/builtin-trace.c | |
| parent | perf tools: Pretty print errno for some more functions (diff) | |
| download | linux-dev-814d7a4d2c33657489f7b45bc0b2dcaa0d88edc0.tar.xz linux-dev-814d7a4d2c33657489f7b45bc0b2dcaa0d88edc0.zip | |
perf trace: Print the name of a syscall when failing to read its info
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 <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
echo Link: http://lkml.kernel.org/n/tip-`ranpwd -l 24`@git.kernel.org
Link: http://lkml.kernel.org/n/tip-q3ak0j8b81yxylykq5wp2uwi@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 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index fb83cfe472e3..ba055103b525 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; } |