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authorArnaldo Carvalho de Melo <acme@redhat.com>2012-09-26 20:05:56 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-09-26 20:42:23 -0300
commit514f1c67c2fdae7b334fdc5adee63a484781241a (patch)
tree4aa41fed839dea9806d8c905c7baec6422b6196b /tools/perf/perf.c
parent201b7334dc4e977479eb22b106ee8ec506e5e55c (diff)
downloadlinux-514f1c67c2fdae7b334fdc5adee63a484781241a.tar.gz
perf trace: New tool
Initially should look loosely like the venerable 'strace' tool, but using the infrastructure in the perf tools to allow tracing extra targets: [acme@sandy linux]$ perf trace --hell Error: unknown option `hell' usage: perf trace <PID> -p, --pid <pid> trace events on existing process id --tid <tid> trace events on existing thread id --all-cpus system-wide collection from all CPUs --cpu <cpu> list of cpus to monitor --no-inherit child tasks do not inherit counters --mmap-pages <n> number of mmap data pages --uid <user> user to profile [acme@sandy linux]$ Those should have the same semantics as when using with 'perf record'. It gets stuck sometimes, but hey, it works sometimes too! In time it should support perf.data based workloads, i.e. it should have a: -o filename Command line option that will produce a perf.data file that can then be used with 'perf trace' or any of the other perf tools (script, report, etc). It will also eventually have the set of functionalities described in the previous 'trace' prototype by Thomas Gleixner: "Announcing a new utility: 'trace'" http://lwn.net/Articles/415728/ Also planned is to have some of the features suggested in the comments of that LWN article. 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> Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/perf.c')
-rw-r--r--tools/perf/perf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index fb8578cfa03c..3fb052c9a27f 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -55,6 +55,7 @@ static struct cmd_struct commands[] = {
{ "lock", cmd_lock, 0 },
{ "kvm", cmd_kvm, 0 },
{ "test", cmd_test, 0 },
+ { "trace", cmd_trace, 0 },
{ "inject", cmd_inject, 0 },
};