From 2fd457a34525ea3bc609e377b46af759af8a7934 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 15 Jun 2016 12:28:40 +0900 Subject: perf probe: Add --cache option to cache the probe definitions Add --cache option to cache the probe definitions. This just saves the result of the dwarf analysis to probe cache. Signed-off-by: Masami Hiramatsu Signed-off-by: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Brendan Gregg Cc: Hemant Kumar Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20160615032840.31330.44412.stgit@devbox Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-event.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'tools/perf/util/probe-event.c') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index cbc8a8bf0f36..084756c17309 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2514,6 +2514,7 @@ static int __add_probe_trace_events(struct perf_probe_event *pev, { int i, fd, ret; struct probe_trace_event *tev = NULL; + struct probe_cache *cache = NULL; struct strlist *namelist; fd = probe_file__open(PF_FL_RW | (pev->uprobes ? PF_FL_UPROBE : 0)); @@ -2555,6 +2556,14 @@ static int __add_probe_trace_events(struct perf_probe_event *pev, } if (ret == -EINVAL && pev->uprobes) warn_uprobe_event_compat(tev); + if (ret == 0 && probe_conf.cache) { + cache = probe_cache__new(pev->target); + if (!cache || + probe_cache__add_entry(cache, pev, tevs, ntevs) < 0 || + probe_cache__commit(cache) < 0) + pr_warning("Failed to add event to probe cache\n"); + probe_cache__delete(cache); + } strlist__delete(namelist); close_out: -- cgit v1.2.3