From nobody Wed Apr 1 22:00:27 2026 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 4261546AF3C for ; Wed, 1 Apr 2026 16:13:34 +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=1775060015; cv=none; b=O4SNXp5a0yhfWtl420Ha2wY3ySZmcaaSGOOyXQHuBsMDkeVXsbDSmCZ3v9w4dHrge/ueTAECmOn7E6haXP3k8TTIUw8x6BN+4dIXMXNTLLNjRhJC4ZnZieAzATaMOqNqKzfIMwVg97Q1p5r0n2EjeG2hPdgA3b225obU6Qni3Uk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775060015; c=relaxed/simple; bh=8CeMSsp5bG8bbzyCebrPJbm+yMmmsP613Zzq5fJ4G94=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=iewEj0hsR6DGPaf64ZQtafQ58mcmC4ebU4eRROHjxtnBbbQUs+R6XntSqHCkKCPEO9Yfx3/A5C/RPtIBYZsZ0nqlJhwq/YzhXQZrvaHCuYcHaxwJkCxc0AuoBi+G4Fw96ESgd/midVXv0MfXui/QJ1+xm6v9/4EKfbED5SzV4DI= 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=fDwRXfF7; 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="fDwRXfF7" Received: by mail-dy1-f201.google.com with SMTP id 5a478bee46e88-2c0f6593ef5so9135474eec.1 for ; Wed, 01 Apr 2026 09:13:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1775060013; x=1775664813; 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=RGYJCmJpaCc2bncJjH0L02E19d9BBzjQUz5zjpm1zYc=; b=fDwRXfF7X3h4v9c1zuOL3IwSmlNzoxUK8lTG46q/bFsHXEHR8Nm8lz+Y8Vg6dKlFad uHJK2+kVUSX2ODyOYX7PoU93l7j0pghavUyIkk3T7/5fdFGTXlh6TYh6cCyKzZNV3ucR pAz8QdmhJqRQT8tRhSVvIuNlJy+BK0NwL3CdKtgGqwCbyBSvcN5gPbdNM7eVl4tXsuPR pF/9K+Esmcdno2VUBvGR2LZ73/CDDMRMi8VGJ/5A53U1LgFlizvRoVFwPdt08qic6nug vPG06Ki9S03JYMUeRZQRGe3HHwRSSUWIKkfiVTWDmZLu3QqiE5d9k/PG7E7cflq8WlDY T+UA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775060013; x=1775664813; 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=RGYJCmJpaCc2bncJjH0L02E19d9BBzjQUz5zjpm1zYc=; b=nrZyg7K4JTRIpN8XTRyIUD7A/9B70L/3TBt2yVjAI70QVcpld8TUQ1+1yhdFQOB90K 1KY6cLKOyP6M+aqum6QcQm9M9LsTys5KBXUTRfGYEyEASSkXEdQORsoo3UcNnLzzL5rJ jSY2PcNzYCuzIDDfqWFFWLmC/QlrWDL9m+PxXGFnQBQWXakQBJ+TO5vdiZkx2wZE2Kkt PECSzUacGtgQmBbfXUqp0qKq6fLy5QyuCggkpEVln6a3hhCBP2yxFcIbUAR9D/o6tFDo rJBMcsKj+DYw2lpRaHgK+i6x0rf8hvyu0PBbRjiqiG6/+1c0WsAMxrwNtirOUR+9seCU 5I0g== X-Forwarded-Encrypted: i=1; AJvYcCWCvqMc+3mPgOzJrIZO1deVitzF5Zmb1EFlHaPaBBvFhRwRtiezYqA3sGDP0Ff7/Ihp8zVwv5BW3fb6sZ8=@vger.kernel.org X-Gm-Message-State: AOJu0Yxvegu2H6UaOhBzkw8Nr03sEWXLaoxw01cCFQWGBw/OVlv5s6PG MrOcZZHoGRsp4GSLj2YTjh+KCPV2vTZKPDvdzfLCdZLyT5fawZ0k6cTccM3VrxMZ4lrHby9OHE0 uGMJydJ0ffw== X-Received: from dlaf1.prod.google.com ([2002:a05:701b:2401:b0:128:f497:319c]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7022:6189:b0:128:cc34:3617 with SMTP id a92af1059eb24-12be64ac958mr2448028c88.21.1775060013079; Wed, 01 Apr 2026 09:13:33 -0700 (PDT) Date: Wed, 1 Apr 2026 09:13:18 -0700 In-Reply-To: <20260401161324.332356-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260401055206.43187-1-irogers@google.com> <20260401161324.332356-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.1118.gaef5881109-goog Message-ID: <20260401161324.332356-3-irogers@google.com> Subject: [PATCH v4 2/8] perf header: Add utility to convert feature number to a string From: Ian Rogers To: acme@kernel.org, namhyung@kernel.org Cc: irogers@google.com, adrian.hunter@intel.com, alexander.shishkin@linux.intel.com, ashelat@redhat.com, ctshao@google.com, derek.foreman@collabora.com, howardchu95@gmail.com, hrishikesh123s@gmail.com, james.clark@linaro.org, jolsa@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, swapnil.sapkal@amd.com, thomas.falcon@intel.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For logging and debug messages it can be convenient to convert a feature number to a name. Add header_feat__name for this and reuse the data already within the feat_ops struct. Signed-off-by: Ian Rogers --- tools/perf/util/header.c | 7 +++++++ tools/perf/util/header.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 9142a8ba4019..fcd53271e189 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -3770,6 +3770,13 @@ struct header_print_data { bool full; /* extended list of headers */ }; =20 +const char *header_feat__name(unsigned int id) +{ + if (id < HEADER_LAST_FEATURE) + return feat_ops[id].name ?: "INVALID"; + return "INVALID"; +} + static int perf_file_section__fprintf_info(struct perf_file_section *secti= on, struct perf_header *ph, int feat, int fd, void *data) diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index cc40ac796f52..ca22030a1434 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -132,6 +132,8 @@ struct perf_header_feature_ops { =20 extern const char perf_version_string[]; =20 +const char *header_feat__name(unsigned int id); + int perf_session__read_header(struct perf_session *session); int perf_session__write_header(struct perf_session *session, struct evlist *evlist, --=20 2.53.0.1118.gaef5881109-goog