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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 4FF5FC432C3 for ; Fri, 15 Nov 2019 12:43:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E0882072D for ; Fri, 15 Nov 2019 12:43:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727758AbfKOMno (ORCPT ); Fri, 15 Nov 2019 07:43:44 -0500 Received: from mga14.intel.com ([192.55.52.115]:58938 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727699AbfKOMnh (ORCPT ); Fri, 15 Nov 2019 07:43:37 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Nov 2019 04:43:37 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,308,1569308400"; d="scan'208";a="257749690" Received: from ahunter-desktop.fi.intel.com ([10.237.72.197]) by FMSMGA003.fm.intel.com with ESMTP; 15 Nov 2019 04:43:36 -0800 From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , linux-kernel@vger.kernel.org Subject: [PATCH 10/15] perf session: Add facility to peek at all events Date: Fri, 15 Nov 2019 14:42:20 +0200 Message-Id: <20191115124225.5247-11-adrian.hunter@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191115124225.5247-1-adrian.hunter@intel.com> References: <20191115124225.5247-1-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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 72a1f73c2878..cd0c4ce1edca 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); -- 2.17.1