From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 66436278761 for ; Wed, 28 May 2025 15:35:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748446528; cv=none; b=iU0meRCrqN2Gd7KOSvTHR8ZAMc86nlO90hf4YAnEiQWJGTwC7l08XAfdy2DTOKsH1Q2hbNI9FMQGDAZ6g0wMKiIyGVSDYsREqgVHmdNSOlrcaFxdiHFnvQbLo2aithBPHS52x8iHbdDODUty4ilajVTxMzRi/A6W8iO+oQ06GeE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748446528; c=relaxed/simple; bh=mPf8dBvx/IZwytsJ14/2EcpgAroqd8TR2fEqG33wk78=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=oQXeExal7NtkGFQFY4/iu8ncT+2Jh3w6f2jskMejBaVS4Eir14XiEsMLSk7ssQBjziqUnKNwQgM74vlHD7c/FaVls+FJkQZuFj84zZI7iYqH2xN9RDq8/TWuQvhfoW59Nd6siCAz0ebe9FJGTsnsD6O66r7Jm8Ja8CYdmhupEq4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 321561A2D; Wed, 28 May 2025 08:35:09 -0700 (PDT) Received: from e132581.cambridge.arm.com (e132581.arm.com [10.1.196.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6CDC63F5A1; Wed, 28 May 2025 08:35:24 -0700 (PDT) From: Leo Yan To: Arnaldo Carvalho de Melo , Namhyung Kim , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , linux-perf-users@vger.kernel.org Cc: Leo Yan Subject: [PATCH] perf script: Print PERF_AUX_FLAG_COLLISION flag Date: Wed, 28 May 2025 16:35:19 +0100 Message-Id: <20250528153519.188644-1-leo.yan@arm.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Print out the collision flag for AUX trace data. This is helpful for inspecting sample collisions. After: 0x217b60@/data_nvme1n1/niayan01/upstream/perf.data [0x40]: event: 11 . . ... raw event: size 64 bytes . 0000: 0b 00 00 00 00 00 40 00 d2 ef 3f 00 00 00 00 00 ......@...?..... . 0010: ff 0f 00 00 00 00 00 00 08 00 00 00 00 00 00 00 ................ . 0020: 1c 01 00 00 1c 01 00 00 10 bf 38 d6 11 01 00 00 ..........8..... . 0030: 03 00 00 00 00 00 00 00 06 00 00 00 00 00 00 00 ................ 3 1176120114960 0x217b60 [0x40]: PERF_RECORD_AUX offset: 0x3fefd2 size: 0xfff flags: 0x8 [C] The added character '[C]' indicates the collision. Signed-off-by: Leo Yan --- tools/perf/util/event.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index c23b77f8f854..2c3081e5c81a 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -448,12 +448,13 @@ int perf_event__exit_del_thread(const struct perf_tool *tool __maybe_unused, size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp) { - return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n", + return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s%s]\n", event->aux.aux_offset, event->aux.aux_size, event->aux.flags, event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "", event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "", - event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : ""); + event->aux.flags & PERF_AUX_FLAG_PARTIAL ? "P" : "", + event->aux.flags & PERF_AUX_FLAG_COLLISION ? "C" : ""); } size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp) -- 2.34.1