From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f201.google.com (mail-dy1-f201.google.com [74.125.82.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 226CC47A0B2 for ; Tue, 16 Jun 2026 16:48:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781628519; cv=none; b=Wvn9gHL/BJmM4HBsxF9P5sdc9VvdFnIFy86Cyf4VQ/mvP/k+Re2SOoSe9FSHiYImc6a6yWMSDY6ayIzjp3ddWNB+BdABi+uNf8wcfk40UyPZ3ddN3qrjuQ4qa61IT5TCUZ79OzyPvxdWCkAtVHmJNvHhrG358OQcBoI9TeCTLgA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781628519; c=relaxed/simple; bh=wgJCM/bCdZsj0MmyUCa5TGtgOpUou6oBR1e+oYwTljs=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=QZ7eeLsICXSalmJdlpanJt4UvP9Wie3v8NuE6fXJsm58pVcTS1p/H9qtiAxh9E3daMrSiqWgeEjLC3Xl0NTkPul09DBxw9kmqdFSQr0RfCiarLq6Fo/qC6sNOpGolxMkANuQr2b8N8DjZcMu1gu8UNWN4kh2wFvZwrwEDP1gZgs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=U+uUF3Oe; arc=none smtp.client-ip=74.125.82.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="U+uUF3Oe" Received: by mail-dy1-f201.google.com with SMTP id 5a478bee46e88-30bc5f826f2so409274eec.1 for ; Tue, 16 Jun 2026 09:48:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781628517; x=1782233317; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=JrA7gYA2WQs2Vx2X1W4DgwiJrh9ev2Ak+8/YtqoFNSw=; b=U+uUF3OequeVv8tPrBEeZYYO71+AwkD6LgPov4WHRTjzQyAVvXF8kLHJ79b7GEeYJ6 MFADaEXL2drKxy/f+nnmk6zErUBs2mkjj5hZ7OT4MUYgpYgznMPOpyMQ2hAk61v02dJ8 0hfxUO36m7NBWM3x2bYIDHkmnxtIOHGSQjERAN35/DF2fCWPmwgcWlQalldOXdphKCf4 m854fGNirK3uXgDatt4svriwtILRK7pa9kkwrbqJTi1vFxtM8lJm5rKS7RO0p/OjgyIr BeSMSb0bNVT9n2yE+aMW4+93dnu1gA2zecKJUZBNFqEzi5iw07uwGy1mDFAW0kk3Zx7w 6NHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781628517; x=1782233317; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=JrA7gYA2WQs2Vx2X1W4DgwiJrh9ev2Ak+8/YtqoFNSw=; b=lLS5a5050DVmv6HhZVOLVKHmpislkp8P6/+JccmGExYhqn1mjzET5vL42xPXhCh3qc x5QavRPWtfb91tC+Dz9xtBEn0OX/whFCkWhe301uzFq3MBFLt3+Sma2TP3IZ7o+GEFr7 BQARSGqozD0ywg5JlC7qLQ88YSI2ftKgm45oYZPllZMkeV1raLG1a0CC0+nlh/5BTmJD 2IGwpTxPADiOmZZEqyXIEVK230lRSooY937/oGzNiN2ErqAvHtgukp1sqo1Q7mYxfv1f ogXuwMNQinR1GQDHX7PFi15JwD5APba7A335sDBhpGkOphoCsdrZ+Ya3S6JfTK4h7g29 sGbw== X-Forwarded-Encrypted: i=1; AFNElJ9VbwjkeAKF/v7h7KXRsQDne7sg5Ohzy4Dxy3L7hJJfKXQiZ+Vw3c6ZokktUNqjT3YDQTjCayand5HqaRanC1Ok@vger.kernel.org X-Gm-Message-State: AOJu0YygrjqztzwN6UaT/QSBrqkYXLD4+2FTYT9MgjwF7ld/SXjjvyMx fa4cT3muOK9hoHa/CVHPPvd3fFgYflZ+eY36GRDlGQIfVL+HYdwpTmI+Ne0nHgFwXtuoslweU3k 7nIToId7FgA== X-Received: from dycsb13.prod.google.com ([2002:a05:693c:300d:b0:2ee:2c3a:8aaf]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7301:ea5:b0:2e2:4979:ec7 with SMTP id 5a478bee46e88-30bca94976emr13666eec.10.1781628516910; Tue, 16 Jun 2026 09:48:36 -0700 (PDT) Date: Tue, 16 Jun 2026 09:48:11 -0700 In-Reply-To: <20260616164819.370939-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260616061404.41929-1-irogers@google.com> <20260616164819.370939-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.1189.g8c84645362-goog Message-ID: <20260616164819.370939-7-irogers@google.com> Subject: [PATCH v3 06/13] perf tests: Fix Python JIT dump profiling test failure From: Ian Rogers To: irogers@google.com, acme@kernel.org, namhyung@kernel.org Cc: adrian.hunter@intel.com, james.clark@linaro.org, jolsa@kernel.org, leo.yan@arm.com, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, thomas.falcon@intel.com, tmricht@linux.ibm.com Content-Type: text/plain; charset="UTF-8" The `python profiling with jitdump` test failed due to: 1. Target PID extraction resolving to duplicate space-separated values, which broke the buildid-cache loops. 2. The default workload duration being too short to capture JIT stack trampoline samples, resulting in 0 matching JIT symbols. Fix the PID parsing by sorting and retrieving a unique single-line value. Implement a robust retry loop starting at 1M python loop iterations and scaling up to 100M iterations until JIT symbols are successfully captured and verified. Fixes: c9cd0c7e529e ("perf test: Add python JIT dump test") Assisted-by: Antigravity:gemini-3.1-pro Signed-off-by: Ian Rogers --- tools/perf/tests/shell/jitdump-python.sh | 79 ++++++++++++++++-------- 1 file changed, 53 insertions(+), 26 deletions(-) diff --git a/tools/perf/tests/shell/jitdump-python.sh b/tools/perf/tests/shell/jitdump-python.sh index ae86203b14a2..05aaa3bd900b 100755 --- a/tools/perf/tests/shell/jitdump-python.sh +++ b/tools/perf/tests/shell/jitdump-python.sh @@ -16,11 +16,15 @@ if [ "${HAS_PERF_JIT}" != "True" ]; then exit 2 fi -PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXXX) +PERF_DATA_DIR=$(mktemp -d /tmp/__perf_test.perf.data.dir.XXXXXX) +PERF_DATA="${PERF_DATA_DIR}/perf.data" cleanup() { echo "Cleaning up files..." - rm -f ${PERF_DATA} ${PERF_DATA}.jit /tmp/jit-${PID}.dump /tmp/jitted-${PID}-*.so 2> /dev/null + rm -rf ${PERF_DATA_DIR} 2> /dev/null + for p in ${ALL_PIDS}; do + rm -f /tmp/jit-${p}.dump /tmp/jitted-${p}-*.so 2> /dev/null + done trap - EXIT TERM INT } @@ -33,9 +37,16 @@ trap_cleanup() { trap trap_cleanup EXIT TERM INT -echo "Run python with -Xperf_jit" -cat <') - -echo "Found ${NUM} matching lines" - -echo "Remove JIT-ed DSOs from the build-ID cache" -for F in /tmp/jitted-${PID}-*.so; do - perf buildid-cache -r "${F}" + if [ -f "${PERF_DATA}.pid" ]; then + REAL_PID=$(cat "${PERF_DATA}.pid") + ALL_PIDS="${ALL_PIDS} ${REAL_PID}" + fi + + # extract PID of the target process from the data + PID=$(perf report -i "${PERF_DATA}" --stdio -F pid -q -g none | \ + cut -d: -f1 -s | sort -u | head -n 1 | tr -d ' ') + if [ -z "${PID}" ]; then + echo "Failed to get PID, retrying..." + continue + fi + ALL_PIDS="${ALL_PIDS} ${PID}" + + echo "Generate JIT-ed DSOs using perf inject" + DEBUGINFOD_URLS='' perf inject -i "${PERF_DATA}" -j -o "${PERF_DATA}.jit" + + echo "Add JIT-ed DSOs to the build-ID cache" + for F in /tmp/jitted-${PID}-*.so; do + perf buildid-cache -a "${F}" + done + + echo "Check the symbol containing the function/module name" + NUM=$(perf report -i "${PERF_DATA}.jit" -s sym --stdio | grep -cE 'py::(foo|bar|baz):') + + echo "Remove JIT-ed DSOs from the build-ID cache" + for F in /tmp/jitted-${PID}-*.so; do + perf buildid-cache -r "${F}" + done + rm -f /tmp/jitted-${PID}-*.so /tmp/jit-${PID}.dump 2>/dev/null + + if [ "${NUM}" -gt 0 ]; then + echo "Success: found ${NUM} matching lines" + break + fi + echo "No matching lines found, retrying with more iterations..." done cleanup -- 2.54.0.1189.g8c84645362-goog