From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 77A8CC48BD6 for ; Tue, 25 Jun 2019 19:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5C9452086D for ; Tue, 25 Jun 2019 19:16:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733152AbfFYTQW (ORCPT ); Tue, 25 Jun 2019 15:16:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:34596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731775AbfFYTPr (ORCPT ); Tue, 25 Jun 2019 15:15:47 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8AD2621670; Tue, 25 Jun 2019 19:15:46 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.92) (envelope-from ) id 1hfquv-0002K8-Lj; Tue, 25 Jun 2019 15:15:45 -0400 Message-Id: <20190625191545.564190445@goodmis.org> User-Agent: quilt/0.65 Date: Tue, 25 Jun 2019 15:15:15 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Masami Hiramatsu Subject: [for-next][PATCH 05/12] tracing/uprobe: Set print format when parsing command References: <20190625191510.599310671@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masami Hiramatsu Set event call's print format right after parsed command for simplifying (un)register_uprobe_event(). Link: http://lkml.kernel.org/r/155931581659.28323.5404667166417404076.stgit@devnote2 Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_uprobe.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 3d6b868830f3..34ce671b6080 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -345,6 +345,7 @@ static void free_trace_uprobe(struct trace_uprobe *tu) path_put(&tu->path); kfree(tu->tp.call.class->system); kfree(tu->tp.call.name); + kfree(tu->tp.call.print_fmt); kfree(tu->filename); kfree(tu); } @@ -592,6 +593,10 @@ static int trace_uprobe_create(int argc, const char **argv) goto error; } + ret = traceprobe_set_print_fmt(&tu->tp, is_ret_probe(tu)); + if (ret < 0) + goto error; + ret = register_trace_uprobe(tu); if (!ret) goto out; @@ -1362,21 +1367,15 @@ static int register_uprobe_event(struct trace_uprobe *tu) init_trace_event_call(tu, call); - if (traceprobe_set_print_fmt(&tu->tp, is_ret_probe(tu)) < 0) - return -ENOMEM; - ret = register_trace_event(&call->event); - if (!ret) { - kfree(call->print_fmt); + if (!ret) return -ENODEV; - } ret = trace_add_event_call(call); if (ret) { pr_info("Failed to register uprobe event: %s\n", trace_event_name(call)); - kfree(call->print_fmt); unregister_trace_event(&call->event); } @@ -1385,15 +1384,8 @@ static int register_uprobe_event(struct trace_uprobe *tu) static int unregister_uprobe_event(struct trace_uprobe *tu) { - int ret; - /* tu->event is unregistered in trace_remove_event_call() */ - ret = trace_remove_event_call(&tu->tp.call); - if (ret) - return ret; - kfree(tu->tp.call.print_fmt); - tu->tp.call.print_fmt = NULL; - return 0; + return trace_remove_event_call(&tu->tp.call); } #ifdef CONFIG_PERF_EVENTS @@ -1452,9 +1444,6 @@ void destroy_local_trace_uprobe(struct trace_event_call *event_call) tu = container_of(event_call, struct trace_uprobe, tp.call); - kfree(tu->tp.call.print_fmt); - tu->tp.call.print_fmt = NULL; - free_trace_uprobe(tu); } #endif /* CONFIG_PERF_EVENTS */ -- 2.20.1