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 989AA3542F8 for ; Mon, 15 Jun 2026 22:30:31 +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=1781562633; cv=none; b=gwz4fpnzSgHReov/D4ZsNslbRwSLOBpDaxFEPKIrF5LJLJVAvA1B3i3cFUmIGVlT8NJZOhIJ99gZ1tO7qiEbYUmHhHTRlC2xtDgToB/61OnrhmYh8NYNdlMQM8VPZy36ueNgqMTk6Fk2guv2GynobmvkLAAdvtpGbcSZDUHO4wY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781562633; c=relaxed/simple; bh=Zqp65KwQSLcOOhvyQLJkWCUgZ1jmploQaB+dpb5COyQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=tIgch6KQYqdgcW1H7RLcCY5u7MGApfd+nSm++xx7tgxr3M1B/i8AodfVADAQFcbxynLAZVplQ2qm7EYQeKNefTdKnThmTaXiwvOORrHT2F2MxgUFCQyKX5f7UNVlopFr9oPER0CFGaIokCX0LAs/97iiWeFcOPKinekeQrR5c3A= 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=i+IiZ1+g; 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="i+IiZ1+g" Received: by mail-dy1-f201.google.com with SMTP id 5a478bee46e88-3080bb0267dso614829eec.1 for ; Mon, 15 Jun 2026 15:30:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781562631; x=1782167431; 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=U1DtSw96iac8P2WFh4+eWHNrQtra6MxsqACQHocD5Fs=; b=i+IiZ1+gXASOSwngAzoln1R7YIYVmakOZ5LQymQtScC5Y0ePk77yejMrFxc0fmoIIt 5YI+o+gOFONbQo7yMXm9j6S2/k7P/7drUBnJKU8u59rDtcBF2IJMTPmGBX9Ng2OejG/V ZbTETn7aC+9OG8Ii4LxeEJe5zdq23Jbj6Ktw7K8MQWuHRIBwaTgynP7Zz9Az7wbUpE9F FTi4d6SmeovHwrpkNNvKmBWJse8n9vCix7rnwpVU/z6KR9yGsf5LNhtUpvZGYTzoXaVS dlZL76dSwkBuzVAkh+y0S/v8WLWKQH7DZNZqGp1cWqDhubiNovQ5cgIt/ohzJwRyzYkm IrYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781562631; x=1782167431; 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=U1DtSw96iac8P2WFh4+eWHNrQtra6MxsqACQHocD5Fs=; b=qcwfZGXQsUk4+KX4LCYrn4tFMP6YHqndIg+LJYAZvGIydYIAtghdA8lCRVzYTFRcqu fzZWy5K7SwoqZLDnOH4U8jWLrg0ho/nwMnfnQoBqxH0aJz05mrmjO7P/4vbkCnchgUg2 TkRlC354KxgNqBB+eWjRyRS/jX+lx9j1H9vCo53bQHNn1m2cQE/mFIm3W2N6+Yi1SZ6t L0QSQJg2ISXCy18KEDsYpYrTotJTfwjReW931OSGwgO9OjIOtf6/zW8dYyl5kLbb8rB5 KFx8g6xgEnCTyh7wOjdX3qfeDsETlSDOXlCm1lfKKqcAan7slhVKx3Lyu5K95EazWvnd gHvw== X-Forwarded-Encrypted: i=1; AFNElJ+C37khkR+vseKPothAh3AqcBSHCFh+ZVWd1LjOWxevnekDcLxcRwiGK/30O7bhuDpHxC42PL9BEwTzwwo=@vger.kernel.org X-Gm-Message-State: AOJu0Yy9r7GgDHFpGgPfvLJJwFVV4+elHSgIvjHutBECEmiIasSJ4w+J L/8j30/6bRoql2UP0Dl3nzdXu2pbF5IhqSmoETmsw+AUjMPBCqgfGi7ZHlMjY0iTumXbVa5TCSM fowsCgH1w9A== X-Received: from dyev5.prod.google.com ([2002:a05:7300:4305:b0:2da:2af9:bfe2]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:5710:b0:2c1:7793:7bbb with SMTP id 5a478bee46e88-3093e2a95b6mr6559840eec.27.1781562630425; Mon, 15 Jun 2026 15:30:30 -0700 (PDT) Date: Mon, 15 Jun 2026 15:29:54 -0700 In-Reply-To: <20260615223011.3873955-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260615061631.2382079-1-irogers@google.com> <20260615223011.3873955-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260615223011.3873955-5-irogers@google.com> Subject: [PATCH v20 04/21] perf data: Add open flag From: Ian Rogers To: irogers@google.com, acme@kernel.org, namhyung@kernel.org Cc: adrian.hunter@intel.com, alice.mei.rogers@gmail.com, dapeng1.mi@linux.intel.com, james.clark@linaro.org, leo.yan@linux.dev, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, tmricht@linux.ibm.com Content-Type: text/plain; charset="UTF-8" Avoid double opens and ensure only open files are closed. This addresses some issues with python integration where the data file wants to be opened before being given to a session. Assisted-by: Gemini:gemini-3.1-pro-preview Signed-off-by: Ian Rogers Acked-by: Namhyung Kim --- tools/perf/util/data.c | 27 ++++++++++++++++++++++----- tools/perf/util/data.h | 4 +++- 2 files changed, 25 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index 94dc534a7386..33fd1b82019e 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -345,9 +345,10 @@ static int open_dir(struct perf_data *data) if (asprintf(&data->file.path, "%s/data", data->path) < 0) return -1; - if (perf_data__is_write(data) && - mkdir(data->path, S_IRWXU) < 0) + if (perf_data__is_write(data) && mkdir(data->path, 0700) < 0) { + zfree(&data->file.path); return -1; + } ret = open_file(data); @@ -360,9 +361,16 @@ static int open_dir(struct perf_data *data) int perf_data__open(struct perf_data *data) { - if (check_pipe(data)) + int ret; + + if (data->open) return 0; + if (check_pipe(data)) { + data->open = true; + return 0; + } + /* currently it allows stdio for pipe only */ data->file.use_stdio = false; @@ -375,16 +383,24 @@ int perf_data__open(struct perf_data *data) if (perf_data__is_read(data)) data->is_dir = is_dir(data); - return perf_data__is_dir(data) ? - open_dir(data) : open_file_dup(data); + ret = perf_data__is_dir(data) ? open_dir(data) : open_file_dup(data); + + if (!ret) + data->open = true; + + return ret; } void perf_data__close(struct perf_data *data) { + if (!data->open) + return; + if (perf_data__is_dir(data)) perf_data__close_dir(data); perf_data_file__close(&data->file); + data->open = false; } static ssize_t perf_data_file__read(struct perf_data_file *file, void *buf, size_t size) @@ -457,6 +473,7 @@ int perf_data__switch(struct perf_data *data, if (!at_exit) { perf_data_file__close(&data->file); + data->open = false; ret = perf_data__open(data); if (ret < 0) goto out; diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h index 8299fb5fa7da..76f57f60361f 100644 --- a/tools/perf/util/data.h +++ b/tools/perf/util/data.h @@ -50,6 +50,8 @@ struct perf_data { const char *path; /** @file: Underlying file to be used. */ struct perf_data_file file; + /** @open: Has the file or directory been opened. */ + bool open; /** @is_pipe: Underlying file is a pipe. */ bool is_pipe; /** @is_dir: Underlying file is a directory. */ @@ -59,7 +61,7 @@ struct perf_data { /** @in_place_update: A file opened for reading but will be written to. */ bool in_place_update; /** @mode: Read or write mode. */ - enum perf_data_mode mode; + enum perf_data_mode mode:8; struct { /** @version: perf_dir_version. */ -- 2.54.0.1136.gdb2ca164c4-goog