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,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 1D27AC432C0 for ; Fri, 22 Nov 2019 14:58:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E6C5520672 for ; Fri, 22 Nov 2019 14:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574434725; bh=cHg/O589AKGsVWgFP8zppA3o0r/Kmjmz5rJ70N/4m6M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1dymlbus8vmCX65AZNZTla74Y2YRaeQgnL9+r+n1JncaSEjO2ar0zLWz9pWwMSNoO mRN1zmQglNlNDZzGWI0AEpRWJ9Qbr4k5EwadNdnGRW/pAENx6OLnJ+AcVgl7kZE9cZ 57Y65UWWfjRSBZUw0mb9V6/TM73oYGdmc/lhOcYs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727538AbfKVO6K (ORCPT ); Fri, 22 Nov 2019 09:58:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:59120 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727425AbfKVO6G (ORCPT ); Fri, 22 Nov 2019 09:58:06 -0500 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 2A9862073B; Fri, 22 Nov 2019 14:58:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574434686; bh=cHg/O589AKGsVWgFP8zppA3o0r/Kmjmz5rJ70N/4m6M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ztWrUzX4B/cpZtAvN7WOraNpk1JQwblJ8y+IWOQMkJU1DxDWLcHq/vzxsPDIDOru7 aoGIW1lfLohDKf0m4OlPmkEJ5ddYu+ZRUVC1bQseCckfh1X9tYgz4ijTSUyu7H7k2d YLwYRldGnYDpMz5je4uDUeziu/ZJOja2BHOvqPfo= 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, Adrian Hunter , Jiri Olsa , Arnaldo Carvalho de Melo Subject: [PATCH 17/26] perf session: Add facility to peek at all events Date: Fri, 22 Nov 2019 11:57:02 -0300 Message-Id: <20191122145711.3171-18-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191122145711.3171-1-acme@kernel.org> References: <20191122145711.3171-1-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: Adrian Hunter AUX area samples are not limited in how far back in time the sample could start. Consequently samples must be queued in advance to allow for time-ordered processing. To achieve that, add perf_session__peek_events() that walks and peeks at all the events. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20191115124225.5247-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 28 ++++++++++++++++++++++++++++ tools/perf/util/session.h | 5 +++++ 2 files changed, 33 insertions(+) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index ab4dae1efea3..d0d7d25b23e3 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1659,6 +1659,34 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset, return 0; } +int perf_session__peek_events(struct perf_session *session, u64 offset, + u64 size, peek_events_cb_t cb, void *data) +{ + u64 max_offset = offset + size; + char buf[PERF_SAMPLE_MAX_SIZE]; + union perf_event *event; + int err; + + do { + err = perf_session__peek_event(session, offset, buf, + PERF_SAMPLE_MAX_SIZE, &event, + NULL); + if (err) + return err; + + err = cb(session, event, offset, data); + if (err) + return err; + + offset += event->header.size; + if (event->header.type == PERF_RECORD_AUXTRACE) + offset += event->auxtrace.size; + + } while (offset < max_offset); + + return err; +} + static s64 perf_session__process_event(struct perf_session *session, union perf_event *event, u64 file_offset) { diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 8456e1d868fd..f76480166d38 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -64,6 +64,11 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset, void *buf, size_t buf_sz, union perf_event **event_ptr, struct perf_sample *sample); +typedef int (*peek_events_cb_t)(struct perf_session *session, + union perf_event *event, u64 offset, + void *data); +int perf_session__peek_events(struct perf_session *session, u64 offset, + u64 size, peek_events_cb_t cb, void *data); int perf_session__process_events(struct perf_session *session); -- 2.21.0