From nobody Wed Dec 17 21:06:57 2025 Received: from mail-lf1-f53.google.com (mail-lf1-f53.google.com [209.85.167.53]) (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 1FFB716DC0F for ; Mon, 22 Jul 2024 10:13:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721643210; cv=none; b=E4D5xYXq10J7edzybsJ8pUu86shTM/cMDa/WHqpYHpSxhWHhHB/GhNO/DtMcdkEJ9muH7Rr4RoWg+KOSQh632OfFZU8Z0XDkRRisxAN4cVi04iC2lKvusnRFQCcU4dC/sQRa/NbfYtK1wvwVP8n8isBrA03tJo4WBPYVXHbWuNo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721643210; c=relaxed/simple; bh=8R5OmeoGLlv5vqwVm9o4il46zprkK1aLP1TxCFBpp4w=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=UGWQ660BEesbhdPeHRArq/+mxFDQwaij1l0ad1rweQ2KP/aDySYAvFXtZo9IfAxa0M2VzcfVfYK7toU5L8hG0PDkn30nuO0tDz6i/rXGgHlt9J8+HFi56ZarsOXG//SzDwo30DKprqx8gwlRIHF4/oMesbprQfSUt49myhJHVkw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=TJISrhqz; arc=none smtp.client-ip=209.85.167.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="TJISrhqz" Received: by mail-lf1-f53.google.com with SMTP id 2adb3069b0e04-52efd08e6d9so2107627e87.1 for ; Mon, 22 Jul 2024 03:13:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1721643207; x=1722248007; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=d6Zkl3RZ0YZqXGz3k9BNGR/j5j9H7UAlIZzg0Q8iJLg=; b=TJISrhqzA+6QJcgHbb2fdtCWIlgcEh1HKDjJlvqM9P4X6kdVHi9KarReB8KMesXMyn 4JKet8HpmjC8Hwh0DYaljF7aQQa/MmJmaJ7yMk1C58adwwypNs1zqe+Nm4ll9+asTw6s ZNNtFvlVeZAWQcxzpLAGPoMMfuXmMeRna81NI5npH7bPac/wEyTH35vMI1pNt23DEQnU lohEYG8wrAZuh33lyaDaDYOfRNpILzhQ+pHgw0etsF6dYWjGg6hylk6yefuQ78NfDMax t1BgDoxDJpABdt0AGAbet5pfdDI9bZM8RnbBzVjtIfWyqIJ89oDrsEfyDUlx3o6B3SXa 8k5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721643207; x=1722248007; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=d6Zkl3RZ0YZqXGz3k9BNGR/j5j9H7UAlIZzg0Q8iJLg=; b=lACI85OQVWsu4a0g3iz/DmzPJXw3V1ypn0KoWejEPP/ai8aDbJMckrSpEtUQ6VmQNY yN9OygxQljStlLyMIy51nGScNvc5L5UYg6jZ+trSuRL4JQbscWJXsRc53KiQUimG1iza OGO0mI4PmJ2R7YoLdqIGDjLFZmOvz8Q9OCS5qMSa9rvJLSG2ohe5AbtofZhR2Gk5CYiJ Edrn/Ua3mDAHvlEviMLFAqmT3pBmK6fkuX3kN5Gl8NbUprzu66xeXVpMW6X3Mf6Sy9JK JstCuj5urKKQLIvtE+Nkmd9h1rMQDlvYz1P+jN1gSYyaEg+KzfUuN1iRaWBu9QfLu1C5 3Yjg== X-Forwarded-Encrypted: i=1; AJvYcCWejTiOc1/9hAcn791Q7f7jOjoHo/RceP2P9tKclXkOngTghjwfcFxXKXXhSovb21eDf8CrrOCL+fQg6hdeJzcs4SVK7gUAJCep/i3/ X-Gm-Message-State: AOJu0YyhpQW4Miixr1WQHAlbAwoYwBIsW9AJJfcVvfHYC+muddhBjJms xR+istnZsXqujn2skARoVJv0lwwpU3lb3RbsWRiWN+qO5Yx2ihWIPiQgDg33Yc8= X-Google-Smtp-Source: AGHT+IHtzUnS25hXmocvsE039YvTk03X0Hq/y0ReZ7EbenrUSY/BqUT58J9l2FysaxuwFgPpAsPnJw== X-Received: by 2002:a05:6512:3409:b0:52c:dac3:392b with SMTP id 2adb3069b0e04-52efb7c592emr3426436e87.33.1721643207351; Mon, 22 Jul 2024 03:13:27 -0700 (PDT) Received: from localhost.localdomain ([89.47.253.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-427d2a8e436sm147993865e9.33.2024.07.22.03.13.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jul 2024 03:13:27 -0700 (PDT) From: James Clark To: coresight@lists.linaro.org, suzuki.poulose@arm.com, gankulkarni@os.amperecomputing.com, mike.leach@linaro.org, leo.yan@linux.dev, anshuman.khandual@arm.com Cc: James Clark , Leo Yan , James Clark , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue , John Garry , Will Deacon , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, linux-perf-users@vger.kernel.org Subject: [PATCH v6 12/17] coresight: Expose map arguments in trace ID API Date: Mon, 22 Jul 2024 11:11:54 +0100 Message-Id: <20240722101202.26915-13-james.clark@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240722101202.26915-1-james.clark@linaro.org> References: <20240722101202.26915-1-james.clark@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: James Clark The trace ID API is currently hard coded to always use the global map. Add public versions that allow the map to be passed in so that Perf mode can use per-sink maps. Keep the non-map versions so that sysfs mode can continue to use the default global map. System ID functions are unchanged because they will always use the default map. Signed-off-by: James Clark Reviewed-by: Mike Leach Tested-by: Leo Yan Signed-off-by: James Clark --- .../hwtracing/coresight/coresight-trace-id.c | 36 ++++++++++++++----- .../hwtracing/coresight/coresight-trace-id.h | 20 +++++++++-- 2 files changed, 45 insertions(+), 11 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-trace-id.c b/drivers/hwt= racing/coresight/coresight-trace-id.c index 19005b5b4dc4..5561989a03fa 100644 --- a/drivers/hwtracing/coresight/coresight-trace-id.c +++ b/drivers/hwtracing/coresight/coresight-trace-id.c @@ -12,7 +12,7 @@ =20 #include "coresight-trace-id.h" =20 -/* Default trace ID map. Used on systems that don't require per sink mappi= ngs */ +/* Default trace ID map. Used in sysfs mode and for system sources */ static struct coresight_trace_id_map id_map_default; =20 /* maintain a record of the mapping of IDs and pending releases per cpu */ @@ -47,7 +47,7 @@ static void coresight_trace_id_dump_table(struct coresigh= t_trace_id_map *id_map, #endif =20 /* unlocked read of current trace ID value for given CPU */ -static int _coresight_trace_id_read_cpu_id(int cpu) +static int _coresight_trace_id_read_cpu_id(int cpu, struct coresight_trace= _id_map *id_map) { return atomic_read(&per_cpu(cpu_id, cpu)); } @@ -152,7 +152,7 @@ static void coresight_trace_id_release_all_pending(void) DUMP_ID_MAP(id_map); } =20 -static int coresight_trace_id_map_get_cpu_id(int cpu, struct coresight_tra= ce_id_map *id_map) +static int _coresight_trace_id_get_cpu_id(int cpu, struct coresight_trace_= id_map *id_map) { unsigned long flags; int id; @@ -160,7 +160,7 @@ static int coresight_trace_id_map_get_cpu_id(int cpu, s= truct coresight_trace_id_ spin_lock_irqsave(&id_map_lock, flags); =20 /* check for existing allocation for this CPU */ - id =3D _coresight_trace_id_read_cpu_id(cpu); + id =3D _coresight_trace_id_read_cpu_id(cpu, id_map); if (id) goto get_cpu_id_clr_pend; =20 @@ -196,13 +196,13 @@ static int coresight_trace_id_map_get_cpu_id(int cpu,= struct coresight_trace_id_ return id; } =20 -static void coresight_trace_id_map_put_cpu_id(int cpu, struct coresight_tr= ace_id_map *id_map) +static void _coresight_trace_id_put_cpu_id(int cpu, struct coresight_trace= _id_map *id_map) { unsigned long flags; int id; =20 /* check for existing allocation for this CPU */ - id =3D _coresight_trace_id_read_cpu_id(cpu); + id =3D _coresight_trace_id_read_cpu_id(cpu, id_map); if (!id) return; =20 @@ -254,22 +254,40 @@ static void coresight_trace_id_map_put_system_id(stru= ct coresight_trace_id_map * =20 int coresight_trace_id_get_cpu_id(int cpu) { - return coresight_trace_id_map_get_cpu_id(cpu, &id_map_default); + return _coresight_trace_id_get_cpu_id(cpu, &id_map_default); } EXPORT_SYMBOL_GPL(coresight_trace_id_get_cpu_id); =20 +int coresight_trace_id_get_cpu_id_map(int cpu, struct coresight_trace_id_m= ap *id_map) +{ + return _coresight_trace_id_get_cpu_id(cpu, id_map); +} +EXPORT_SYMBOL_GPL(coresight_trace_id_get_cpu_id_map); + void coresight_trace_id_put_cpu_id(int cpu) { - coresight_trace_id_map_put_cpu_id(cpu, &id_map_default); + _coresight_trace_id_put_cpu_id(cpu, &id_map_default); } EXPORT_SYMBOL_GPL(coresight_trace_id_put_cpu_id); =20 +void coresight_trace_id_put_cpu_id_map(int cpu, struct coresight_trace_id_= map *id_map) +{ + _coresight_trace_id_put_cpu_id(cpu, id_map); +} +EXPORT_SYMBOL_GPL(coresight_trace_id_put_cpu_id_map); + int coresight_trace_id_read_cpu_id(int cpu) { - return _coresight_trace_id_read_cpu_id(cpu); + return _coresight_trace_id_read_cpu_id(cpu, &id_map_default); } EXPORT_SYMBOL_GPL(coresight_trace_id_read_cpu_id); =20 +int coresight_trace_id_read_cpu_id_map(int cpu, struct coresight_trace_id_= map *id_map) +{ + return _coresight_trace_id_read_cpu_id(cpu, id_map); +} +EXPORT_SYMBOL_GPL(coresight_trace_id_read_cpu_id_map); + int coresight_trace_id_get_system_id(void) { return coresight_trace_id_map_get_system_id(&id_map_default); diff --git a/drivers/hwtracing/coresight/coresight-trace-id.h b/drivers/hwt= racing/coresight/coresight-trace-id.h index 49438a96fcc6..840babdd0794 100644 --- a/drivers/hwtracing/coresight/coresight-trace-id.h +++ b/drivers/hwtracing/coresight/coresight-trace-id.h @@ -42,8 +42,6 @@ #define IS_VALID_CS_TRACE_ID(id) \ ((id > CORESIGHT_TRACE_ID_RES_0) && (id < CORESIGHT_TRACE_ID_RES_TOP)) =20 -/* Allocate and release IDs for a single default trace ID map */ - /** * Read and optionally allocate a CoreSight trace ID and associate with a = CPU. * @@ -59,6 +57,12 @@ */ int coresight_trace_id_get_cpu_id(int cpu); =20 +/** + * Version of coresight_trace_id_get_cpu_id() that allows the ID map to op= erate + * on to be provided. + */ +int coresight_trace_id_get_cpu_id_map(int cpu, struct coresight_trace_id_m= ap *id_map); + /** * Release an allocated trace ID associated with the CPU. * @@ -72,6 +76,12 @@ int coresight_trace_id_get_cpu_id(int cpu); */ void coresight_trace_id_put_cpu_id(int cpu); =20 +/** + * Version of coresight_trace_id_put_cpu_id() that allows the ID map to op= erate + * on to be provided. + */ +void coresight_trace_id_put_cpu_id_map(int cpu, struct coresight_trace_id_= map *id_map); + /** * Read the current allocated CoreSight Trace ID value for the CPU. * @@ -92,6 +102,12 @@ void coresight_trace_id_put_cpu_id(int cpu); */ int coresight_trace_id_read_cpu_id(int cpu); =20 +/** + * Version of coresight_trace_id_read_cpu_id() that allows the ID map to o= perate + * on to be provided. + */ +int coresight_trace_id_read_cpu_id_map(int cpu, struct coresight_trace_id_= map *id_map); + /** * Allocate a CoreSight trace ID for a system component. * --=20 2.34.1