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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_GIT 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 A4865C6778A for ; Mon, 2 Jul 2018 20:22:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D94D25AC5 for ; Mon, 2 Jul 2018 20:22:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="DZ3/XPQ6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5D94D25AC5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753366AbeGBUWl (ORCPT ); Mon, 2 Jul 2018 16:22:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:40328 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752684AbeGBUWi (ORCPT ); Mon, 2 Jul 2018 16:22:38 -0400 Received: from localhost.localdomain (c-98-220-238-81.hsd1.il.comcast.net [98.220.238.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6267725A24; Mon, 2 Jul 2018 20:22:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1530562958; bh=6jjjX9HpmRGs3oPkv10BQAd0icGg/6jsu1sm1o6LmQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:In-Reply-To: References:From; b=DZ3/XPQ6pB+XnJQaJ86H47Os5nAO5FMPMLchTfboJiTwVBPKPLw0qe6DnssL5+k5+ AdRV1Ap056zeE5j4ThQIwff7EffFYQWcNrGi7HrgQO/X8bENsvP+1ztqW6uNEaGlX7 0+NzP3PvEK/5uxwp1cCjxOelm+OpZo7OuhOFPBFU= From: Tom Zanussi To: rostedt@goodmis.org Cc: tglx@linutronix.de, mhiramat@kernel.org, namhyung@kernel.org, vedang.patel@intel.com, bigeasy@linutronix.de, joel@joelfernandes.org, mathieu.desnoyers@efficios.com, julia@ni.com, linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Tom Zanussi Subject: [PATCH v2 2/7] tracing: Split up onmatch action data Date: Mon, 2 Jul 2018 15:22:21 -0500 Message-Id: X-Mailer: git-send-email 2.14.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tom Zanussi Currently, the onmatch action data binds the onmatch action to data related to synthetic event generation. Since we want to allow the onmatch handler to potentially invoke a different action, and because we expect other handlers to generate synthetic events, we need to separate the data related to these two functions. Also rename the onmatch data to something more descriptive. Signed-off-by: Tom Zanussi --- kernel/trace/trace_events_hist.c | 59 ++++++++++++++++++++-------------------- 1 file changed, 30 insertions(+), 29 deletions(-) diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index ede7a27fa52b..61a3a8ca2f76 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -347,13 +347,14 @@ struct action_data { unsigned int n_params; char *params[SYNTH_FIELDS_MAX]; + unsigned int var_ref_idx; + struct synth_event *synth_event; + union { struct { - unsigned int var_ref_idx; - char *match_event; - char *match_event_system; - struct synth_event *synth_event; - } onmatch; + char *event; + char *event_system; + } match_data; struct { char *var_str; @@ -1001,9 +1002,9 @@ static void action_trace(struct hist_trigger_data *hist_data, struct ring_buffer_event *rbe, struct action_data *data, u64 *var_ref_vals) { - struct synth_event *event = data->onmatch.synth_event; + struct synth_event *event = data->synth_event; - trace_synth(event, var_ref_vals, data->onmatch.var_ref_idx); + trace_synth(event, var_ref_vals, data->var_ref_idx); } struct hist_var_data { @@ -1573,8 +1574,8 @@ find_match_var(struct hist_trigger_data *hist_data, char *var_name) struct action_data *data = hist_data->actions[i]; if (data->handler == HANDLER_ONMATCH) { - char *system = data->onmatch.match_event_system; - char *event_name = data->onmatch.match_event; + char *system = data->match_data.event_system; + char *event_name = data->match_data.event; file = find_var_file(tr, system, event_name, var_name); if (!file) @@ -3521,15 +3522,15 @@ static void onmatch_destroy(struct action_data *data) mutex_lock(&synth_event_mutex); - kfree(data->onmatch.match_event); - kfree(data->onmatch.match_event_system); + kfree(data->match_data.event); + kfree(data->match_data.event_system); kfree(data->action_name); for (i = 0; i < data->n_params; i++) kfree(data->params[i]); - if (data->onmatch.synth_event) - data->onmatch.synth_event->ref--; + if (data->synth_event) + data->synth_event->ref--; kfree(data); @@ -3611,8 +3612,8 @@ trace_action_find_var(struct hist_trigger_data *hist_data, hist_field = find_target_event_var(hist_data, system, event, var); if (!hist_field) { if (!system && data->handler == HANDLER_ONMATCH) { - system = data->onmatch.match_event_system; - event = data->onmatch.match_event; + system = data->match_data.event_system; + event = data->match_data.event; } hist_field = find_event_var(hist_data, system, event, var); @@ -3651,8 +3652,8 @@ trace_action_create_field_var(struct hist_trigger_data *hist_data, * event. */ if (!system && data->handler == HANDLER_ONMATCH) { - system = data->onmatch.match_event_system; - event = data->onmatch.match_event; + system = data->match_data.event_system; + event = data->match_data.event; } /* @@ -3764,8 +3765,8 @@ static int trace_action_create(struct hist_trigger_data *hist_data, goto err; } - data->onmatch.synth_event = event; - data->onmatch.var_ref_idx = var_ref_idx; + data->synth_event = event; + data->var_ref_idx = var_ref_idx; out: return ret; err: @@ -3855,14 +3856,14 @@ static struct action_data *onmatch_parse(struct trace_array *tr, char *str) goto free; } - data->onmatch.match_event = kstrdup(match_event, GFP_KERNEL); - if (!data->onmatch.match_event) { + data->match_data.event = kstrdup(match_event, GFP_KERNEL); + if (!data->match_data.event) { ret = -ENOMEM; goto free; } - data->onmatch.match_event_system = kstrdup(match_event_system, GFP_KERNEL); - if (!data->onmatch.match_event_system) { + data->match_data.event_system = kstrdup(match_event_system, GFP_KERNEL); + if (!data->match_data.event_system) { ret = -ENOMEM; goto free; } @@ -4424,8 +4425,8 @@ static void print_onmatch_spec(struct seq_file *m, { unsigned int i; - seq_printf(m, ":onmatch(%s.%s).", data->onmatch.match_event_system, - data->onmatch.match_event); + seq_printf(m, ":onmatch(%s.%s).", data->match_data.event_system, + data->match_data.event); seq_printf(m, "%s(", data->action_name); @@ -4469,11 +4470,11 @@ static bool actions_match(struct hist_trigger_data *hist_data, return false; if (data->handler == HANDLER_ONMATCH) { - if (strcmp(data->onmatch.match_event_system, - data_test->onmatch.match_event_system) != 0) + if (strcmp(data->match_data.event_system, + data_test->match_data.event_system) != 0) return false; - if (strcmp(data->onmatch.match_event, - data_test->onmatch.match_event) != 0) + if (strcmp(data->match_data.event, + data_test->match_data.event) != 0) return false; } else if (data->handler == HANDLER_ONMAX) { if (strcmp(data->onmax.var_str, -- 2.14.1