From nobody Wed Dec 17 14:01:13 2025 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (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 D9D6319ABAB for ; Tue, 18 Mar 2025 04:31:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742272319; cv=none; b=G/M9V3hYRY5qrh9hclllT8SNOdiH+kDTLIxSVI1XtytpxF/cLIOYhxE3pPq6OHdqFNWAWb8xQGafbBFJluzzMNWThEounDWktHc5X9vSv7KoKnz2YICZA76luNYoAMsHop+SbkKsDt8uwGiRnwRZuRwmtyNR6CZK5YBKp+FLUtk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742272319; c=relaxed/simple; bh=R9Xg6/Ngqi7cKsMGCB9U1IMDEdObQAmq0QYpQz3ckv0=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=qSBD5wG2XXVgBa6VVZKhfvbdzNgmyBq/AX9ij/9fjblft931u1XCoaE+WMa/8FTt7E0y2aM6iQrm56Up1ee1vO7O/rzDMSwxdzxwAaz6SIKT9eHrJ4RzFHQoTIG1J5TN+CDwWxqszQvIlWWVHR+nKaac3H06hSykLKsMtcwIXwQ= 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=sjg+fDHv; arc=none smtp.client-ip=209.85.219.201 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="sjg+fDHv" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-e63458181eeso8195286276.0 for ; Mon, 17 Mar 2025 21:31:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1742272317; x=1742877117; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=IsSrnV0KmyUDFf76MOHDYiCKaXGAeH1pZZ/Ur+aDjTE=; b=sjg+fDHvjvQIY9HiBYOWJjK7dS2bM7G2F/oQkfE4fItu+N2Xdq1LljzC2z0gFDC67U oI1LcRMyFEFSeAYa3UGsSSTmWgW4uKrkzAPA1AIgupQVdoTNFMMDHsJmWclZfK7urxU6 F3XT5+6T0ICX/nyDyUqL21cKOuugxakQ/RefYbcP2xRB48zS1eAqFuheXI+rlKBoZabj B3u1Gh/4tqnFwP2x/ASXDja05auhmts/PxXLxCwrV0j4Ud5Uw+gtRaDN7oZRgBo5XTBu SLKlMTN1byTjP/CN49EY7yFlyYKWlNmeJ3fgXpPWBkA8k7hIFukSyLfgrmptAuzvJHwU 3G4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742272317; x=1742877117; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=IsSrnV0KmyUDFf76MOHDYiCKaXGAeH1pZZ/Ur+aDjTE=; b=FdgVoyovEdxeCHWPmn6BupVG9P38SyTtH2SkSfeVxXcJ4hTkUC34jrhK3mI6xIXt33 9pWlhs05jSMZVq7/aUwGxnfLbtsDlmlf3Ij5SSYNjCb6FlnSp04heb5nup3yXihe6P4Q KA40sPuAcThODZNQMpL4zOKAdKCEMklwJ+Oz1CiCmF2dTz5jVW4Ti9wPd/6blSCFN7/R m4NCdD7FxH05jy2gJebRPegHU7HVrKGe6262d6Bk2DLD7e/uPJ5eEYYNGq/pmgoEz5ts CXI2rfjHRRt6rvLuy3InDujUIY66QQSs5L+wTv53KWrwSq+hdf4sTnUJf5RaR1xdcWpb Ay0w== X-Forwarded-Encrypted: i=1; AJvYcCW9LrTQYCnDDntHSsxs4XtSaTeZJANZuVzvIbNKdGIjGuRpQ5Wj9UD0XIpoSLE2D0gRHZrlzhY5ghCM5a4=@vger.kernel.org X-Gm-Message-State: AOJu0YwdUfFLRN6yFhVHEfRtsoCmnzRuIrqHTurAYj2DyA3udPBaidSA 21gOYDrmkh6Tk54bZDyXB7SkClXhi7NKbPCfYsumbiH2jK1LBj5iCz+TpYJuH/CbPM669aPSsnz nHuxKGQ== X-Google-Smtp-Source: AGHT+IE9RLBPYYi01/nJ6WpnF2viapxrPRVS7wY4MLSGpo6dfqlkOjr5inF2G5LwZ0a2dZ+mLAaiBH+9FSni X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:ef29:15ce:a42a:b69f]) (user=irogers job=sendgmr) by 2002:a25:ad4b:0:b0:e60:a0b5:e57 with SMTP id 3f1490d57ef6-e63f64e8581mr7989276.3.1742272316696; Mon, 17 Mar 2025 21:31:56 -0700 (PDT) Date: Mon, 17 Mar 2025 21:31:49 -0700 In-Reply-To: <20250318043151.137973-1-irogers@google.com> Message-Id: <20250318043151.137973-2-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250318043151.137973-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.rc1.451.g8f38331e32-goog Subject: [PATCH v2 1/3] perf mutex: Add annotations for LOCKS_EXCLUDED and LOCKS_RETURNED From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Athira Rajeev , Stephen Brennan , James Clark , Yunseong Kim , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Used to annotate when locks shouldn't be held for a function or if a function returns a lock that's used by later mutex lock unlock operations. Signed-off-by: Ian Rogers --- tools/perf/util/mutex.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/util/mutex.h b/tools/perf/util/mutex.h index 40661120cacc..62d258c71ded 100644 --- a/tools/perf/util/mutex.h +++ b/tools/perf/util/mutex.h @@ -33,6 +33,12 @@ /* Documents if a type is a lockable type. */ #define LOCKABLE __attribute__((lockable)) =20 +/* Documents a function that expects a lock not to be held prior to entry.= */ +#define LOCKS_EXCLUDED(...) __attribute__((locks_excluded(__VA_ARGS__))) + +/* Documents a function that returns a lock. */ +#define LOCK_RETURNED(x) __attribute__((lock_returned(x))) + /* Documents functions that acquire a lock in the body of a function, and = do not release it. */ #define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__((exclusive_lock_functi= on(__VA_ARGS__))) =20 @@ -57,6 +63,8 @@ #define GUARDED_BY(x) #define PT_GUARDED_BY(x) #define LOCKABLE +#define LOCKS_EXCLUDED(...) +#define LOCK_RETURNED(x) #define EXCLUSIVE_LOCK_FUNCTION(...) #define UNLOCK_FUNCTION(...) #define EXCLUSIVE_TRYLOCK_FUNCTION(...) --=20 2.49.0.rc1.451.g8f38331e32-goog