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=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 009B5C433ED for ; Fri, 16 Apr 2021 17:27:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D33B7611ED for ; Fri, 16 Apr 2021 17:27:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242322AbhDPR1m (ORCPT ); Fri, 16 Apr 2021 13:27:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:56308 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241805AbhDPR1X (ORCPT ); Fri, 16 Apr 2021 13:27:23 -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 652DB613C0; Fri, 16 Apr 2021 17:26:58 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.94) (envelope-from ) id 1lXSF7-0069mQ-F3; Fri, 16 Apr 2021 13:26:57 -0400 Message-ID: <20210416172657.335441975@goodmis.org> User-Agent: quilt/0.66 Date: Fri, 16 Apr 2021 13:26:19 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , "Yordan Karadzhov (VMware)" Subject: [for-next][PATCH 7/7] ftrace: Reuse the output of the function tracer for func_repeats References: <20210416172612.086725495@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Steven Rostedt (VMware)" The func_repeats event shows the output of the function tracer followed by a count of the number of repeats the previous function had made, as well as the timestamp of the last function that was repeated. The printing of the function should be the same as is for the function it is displaying. Reuse the code in trace_fn_trace() by making a helper function print_fn_trace() and use it for trace_func_repeats_print(). Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_output.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 3037f0c88f90..d0368a569bfa 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -845,6 +845,17 @@ enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags, return trace_handle_return(&iter->seq); } +static void print_fn_trace(struct trace_seq *s, unsigned long ip, + unsigned long parent_ip, int flags) +{ + seq_print_ip_sym(s, ip, flags); + + if ((flags & TRACE_ITER_PRINT_PARENT) && parent_ip) { + trace_seq_puts(s, " <-"); + seq_print_ip_sym(s, parent_ip, flags); + } +} + /* TRACE_FN */ static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags, struct trace_event *event) @@ -854,13 +865,7 @@ static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags, trace_assign_type(field, iter->ent); - seq_print_ip_sym(s, field->ip, flags); - - if ((flags & TRACE_ITER_PRINT_PARENT) && field->parent_ip) { - trace_seq_puts(s, " <-"); - seq_print_ip_sym(s, field->parent_ip, flags); - } - + print_fn_trace(s, field->ip, field->parent_ip, flags); trace_seq_putc(s, '\n'); return trace_handle_return(s); @@ -1408,9 +1413,7 @@ trace_func_repeats_print(struct trace_iterator *iter, int flags, trace_assign_type(field, iter->ent); - seq_print_ip_sym(s, field->ip, flags); - trace_seq_puts(s, " <-"); - seq_print_ip_sym(s, field->parent_ip, flags); + print_fn_trace(s, field->ip, field->parent_ip, flags); trace_seq_printf(s, " (repeats: %u, last_ts:", field->count); trace_print_time(s, iter, iter->ts - FUNC_REPEATS_GET_DELTA_TS(field)); -- 2.30.1