From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by sourceware.org (Postfix) with ESMTPS id 9B7CC398888A for ; Mon, 10 May 2021 17:56:58 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 9B7CC398888A Received: by mail-wr1-x436.google.com with SMTP id l2so17529413wrm.9 for ; Mon, 10 May 2021 10:56:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pPRtGR1hem9DTNvLYgsA1Kk8tWymNQKzo15ovBiFWnQ=; b=J0Ij/LvX+EhQnBkYFSrX5l6zyHT1Jl4qKP5dlttHBgGmifhUURr+N4A43uvXTKGgE2 L/dMb766q+BiYXXe7d0Yrtfb7AyEc1aGnLby/B7wKcwsUGKitep8SxyG+IXEqGNmuzec NYbX62jTbm4xx0ZvxgTJbX+ZBYXRw9fe/CGdregHTjuWFkGPPMiNaQxQcZMDCG955c3I CPHgqdQAIsT8zMQbTbVnQn2LSY6ihDJ9n2VyTNDrC95nuO+Hbi/Au/kHrjRu7f28JRuA NIRAgFQJHZDhPtVoHaM6H4wuYwbUP3wURNjDXGRJjfIvFU3h3ZwPXryBmVpu4HI1uDyO TENQ== X-Gm-Message-State: AOAM530qLxF8YkW5b5YpacqUyFY+BGmmURqoJgj42GV8xQMc7tgaw1K3 QCJyXUDH9VL89dWzswmpDCQ= X-Google-Smtp-Source: ABdhPJwOsI+99Xtdq7PrJvJ62oqOHrBffOMw8R8sfjI1QnRbjRgQSMSnkKF95g5IZgp/tGLRPHLPsw== X-Received: by 2002:adf:dfd1:: with SMTP id q17mr31283976wrn.177.1620669417804; Mon, 10 May 2021 10:56:57 -0700 (PDT) Received: from sqli.sqli.com ([195.53.121.100]) by smtp.googlemail.com with ESMTPSA id m13sm24318830wrw.86.2021.05.10.10.56.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 May 2021 10:56:57 -0700 (PDT) From: Alejandro Colomar To: mtk.manpages@gmail.com Cc: Florian Weimer , Jakub Wilk , Alejandro Colomar , linux-man@vger.kernel.org, libc-alpha@sourceware.org Subject: [PATCH 28/39] perf_event_open.2: Use syscall(SYS_...); for system calls without a wrapper Date: Mon, 10 May 2021 19:55:37 +0200 Message-Id: <20210510175546.28445-29-alx.manpages@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510175546.28445-1-alx.manpages@gmail.com> References: <20210510175546.28445-1-alx.manpages@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-12.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 May 2021 17:56:59 -0000 Signed-off-by: Alejandro Colomar --- man2/perf_event_open.2 | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2 index 1d5d1aada..3bfc7c103 100644 --- a/man2/perf_event_open.2 +++ b/man2/perf_event_open.2 @@ -29,16 +29,21 @@ perf_event_open \- set up performance monitoring .SH SYNOPSIS .nf -.B #include -.B #include +.BR "#include " " /* Definition of " PERF_* " constants */" +.BR "#include " " /* Definition of " HW_* " constants */" +.BR "#include " " /* Definition of " SYS_* " constants */" +.B #include .PP -.BI "int perf_event_open(struct perf_event_attr *" attr , -.BI " pid_t " pid ", int " cpu ", int " group_fd , -.BI " unsigned long " flags ); +.BI "int syscall(SYS_perf_event_open, struct perf_event_attr *" attr , +.BI " pid_t " pid ", int " cpu ", int " group_fd \ +", unsigned long " flags ); .fi .PP .IR Note : -There is no glibc wrapper for this system call; see NOTES. +glibc provides no wrapper for +.BR perf_event_open (), +necessitating the use of +.BR syscall (2). .SH DESCRIPTION Given a list of parameters, .BR perf_event_open () @@ -3641,10 +3646,6 @@ This system call Linux-specific and should not be used in programs intended to be portable. .SH NOTES -Glibc does not provide a wrapper for this system call; call it using -.BR syscall (2). -See the example below. -.PP The official way of knowing if .BR perf_event_open () support is enabled is checking -- 2.31.1