From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757746AbbICRcW (ORCPT ); Thu, 3 Sep 2015 13:32:22 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:33829 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757730AbbICRcV (ORCPT ); Thu, 3 Sep 2015 13:32:21 -0400 From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , Wang Nan , Masami Hiramatsu Subject: [RFC/PATCH 1/3] perf probe: Split add_perf_probe_events() Date: Fri, 4 Sep 2015 02:28:55 +0900 Message-Id: <1441301337-18954-1-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The add_perf_probe_events() does 3 things: 1. convert all perf events to trace events 2. add all trace events to kernel 3. cleanup all trace events But sometimes we need to do something with the trace events. So split the funtion into two, so that it can access intermediate trace events via struct __event_package if needed. Cc: Masami Hiramatsu Signed-off-by: Namhyung Kim --- tools/perf/util/probe-event.c | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index eb5f18b75402..8eaa03428d72 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2765,9 +2765,10 @@ struct __event_package { int ntevs; }; -int add_perf_probe_events(struct perf_probe_event *pevs, int npevs) +static int __add_perf_probe_events(struct perf_probe_event *pevs, int npevs, + struct __event_package **ppkgs) { - int i, j, ret; + int i, ret; struct __event_package *pkgs; ret = 0; @@ -2792,7 +2793,7 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs) ret = convert_to_probe_trace_events(pkgs[i].pev, &pkgs[i].tevs); if (ret < 0) - goto end; + return ret; pkgs[i].ntevs = ret; } /* This just release blacklist only if allocated */ @@ -2806,7 +2807,19 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs) if (ret < 0) break; } -end: + + *ppkgs = pkgs; + + return 0; +} + +static void cleanup_perf_probe_events(struct __event_package *pkgs, int npevs) +{ + int i, j; + + if (pkgs == NULL) + return; + /* Loop 3: cleanup and free trace events */ for (i = 0; i < npevs; i++) { for (j = 0; j < pkgs[i].ntevs; j++) @@ -2815,6 +2828,15 @@ end: } free(pkgs); exit_symbol_maps(); +} + +int add_perf_probe_events(struct perf_probe_event *pevs, int npevs) +{ + int ret; + struct __event_package *pkgs = NULL; + + ret = __add_perf_probe_events(pevs, npevs, &pkgs); + cleanup_perf_probe_events(pkgs, npevs); return ret; } -- 2.5.0