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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 617B5C433FF for ; Tue, 30 Jul 2019 02:59:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 364E521726 for ; Tue, 30 Jul 2019 02:59:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564455562; bh=vW3Hi27+Qj34IfkC1RfQW6W55sHVhgxzQPBAbe/sX0U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sI70Kpiu2EhwlujuDJbW+IuUiF3SByOzTmJKveVDQ/uUZ6XBt4irsSzf2OYOVLE2K 5k2iol0vVkIxwQcr/akI9gHvgyVmSExOyS9Dncc+l9sk4fkrE5debdxCfSOW8AzavE 5xV1GhkXgDfu/Xkqsm5eSycJH204V4qxMorUswz0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732198AbfG3C7V (ORCPT ); Mon, 29 Jul 2019 22:59:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:48724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732186AbfG3C7T (ORCPT ); Mon, 29 Jul 2019 22:59:19 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.35.50]) (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 0172C217D6; Tue, 30 Jul 2019 02:59:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564455558; bh=vW3Hi27+Qj34IfkC1RfQW6W55sHVhgxzQPBAbe/sX0U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OlxJM4dC18HSE7gY3/28cigoW2DTQjWjevjKYQrpNioOT41F3BpBJpnkxX7zniXfd nah0XxDTdMSRnze6WZx3WFrp0wC6PzvBSAO/TIBj/HvWNCTi/tRn7kRxXVgg8siyZ3 otebaOtEUqadvGbEIOVIn9o3Hp8/inFVNMC/VVko= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Alexander Shishkin , Alexey Budankov , Andi Kleen , Michael Petlan , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: [PATCH 054/107] libperf: Add debug output support Date: Mon, 29 Jul 2019 23:55:17 -0300 Message-Id: <20190730025610.22603-55-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190730025610.22603-1-acme@kernel.org> References: <20190730025610.22603-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Olsa Add the perf_set_print() function to allow setting an output function for warn/info/debug messages. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-28-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/lib/core.c | 34 ++++++++++++++++++++++++++++++ tools/perf/lib/include/perf/core.h | 13 ++++++++++++ tools/perf/lib/internal.h | 18 ++++++++++++++++ tools/perf/lib/libperf.map | 2 ++ 4 files changed, 67 insertions(+) create mode 100644 tools/perf/lib/internal.h diff --git a/tools/perf/lib/core.c b/tools/perf/lib/core.c index e69de29bb2d1..29d5e3348718 100644 --- a/tools/perf/lib/core.c +++ b/tools/perf/lib/core.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#define __printf(a, b) __attribute__((format(printf, a, b))) + +#include +#include +#include +#include "internal.h" + +static int __base_pr(enum libperf_print_level level, const char *format, + va_list args) +{ + return vfprintf(stderr, format, args); +} + +static libperf_print_fn_t __libperf_pr = __base_pr; + +void libperf_set_print(libperf_print_fn_t fn) +{ + __libperf_pr = fn; +} + +__printf(2, 3) +void libperf_print(enum libperf_print_level level, const char *format, ...) +{ + va_list args; + + if (!__libperf_pr) + return; + + va_start(args, format); + __libperf_pr(level, format, args); + va_end(args); +} diff --git a/tools/perf/lib/include/perf/core.h b/tools/perf/lib/include/perf/core.h index e2e4b43c9131..c341a7b2c874 100644 --- a/tools/perf/lib/include/perf/core.h +++ b/tools/perf/lib/include/perf/core.h @@ -2,8 +2,21 @@ #ifndef __LIBPERF_CORE_H #define __LIBPERF_CORE_H +#include + #ifndef LIBPERF_API #define LIBPERF_API __attribute__((visibility("default"))) #endif +enum libperf_print_level { + LIBPERF_WARN, + LIBPERF_INFO, + LIBPERF_DEBUG, +}; + +typedef int (*libperf_print_fn_t)(enum libperf_print_level level, + const char *, va_list ap); + +LIBPERF_API void libperf_set_print(libperf_print_fn_t fn); + #endif /* __LIBPERF_CORE_H */ diff --git a/tools/perf/lib/internal.h b/tools/perf/lib/internal.h new file mode 100644 index 000000000000..dc92f241732e --- /dev/null +++ b/tools/perf/lib/internal.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LIBPERF_INTERNAL_H +#define __LIBPERF_INTERNAL_H + +void libperf_print(enum libperf_print_level level, + const char *format, ...) + __attribute__((format(printf, 2, 3))); + +#define __pr(level, fmt, ...) \ +do { \ + libperf_print(level, "libperf: " fmt, ##__VA_ARGS__); \ +} while (0) + +#define pr_warning(fmt, ...) __pr(LIBPERF_WARN, fmt, ##__VA_ARGS__) +#define pr_info(fmt, ...) __pr(LIBPERF_INFO, fmt, ##__VA_ARGS__) +#define pr_debug(fmt, ...) __pr(LIBPERF_DEBUG, fmt, ##__VA_ARGS__) + +#endif /* __LIBPERF_INTERNAL_H */ diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map index a8e913988edf..3536242c545c 100644 --- a/tools/perf/lib/libperf.map +++ b/tools/perf/lib/libperf.map @@ -1,4 +1,6 @@ LIBPERF_0.0.1 { + global: + libperf_set_print; local: *; }; -- 2.21.0