From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (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 B703E21B9F0 for ; Mon, 21 Apr 2025 21:58:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745272713; cv=none; b=NnRBzq+RfldJc9Mt1i2W3e3pQsAISyPvxKCJuHlWH33AlzmrF8fT5JXRB2ftynR/LzB2HkdOt99/nt3+SssHuJQEqR1UKhVRUt0OiAUgaAMbI9WWs87tNMQgPCap4tB2TAE5EyQQ50WHeaDAy21FTwUmhIGX6SdMmUpSRQ8HQ8o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745272713; c=relaxed/simple; bh=nMgu5glmK3F7QNbIg1QfyS3VbDIbwgjVcwChkm+gctQ=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=En4V6mjL3puhYifGLJtWI9YFCyt7Uo6gVrkkQB2tZYS9iv/2ht5FOB7vjMIs2zoFh1nO7JkcL+lmSd3QNyPE/VrlUSNUNhU898btVxF8xRW0yM5ehBGwA0CQlNOmJjyL5cK3+5RvEV2u1P+Eft4Wl4KXMiGyOIRLBvenk/3Q+gY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--yabinc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=M6uXK9wq; arc=none smtp.client-ip=209.85.215.201 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--yabinc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="M6uXK9wq" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-af98c8021b5so4461655a12.2 for ; Mon, 21 Apr 2025 14:58:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1745272711; x=1745877511; 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=EcpcuD7anqMhhZmchi1Jj15ct5OGdKXSmJ/UTKESh3w=; b=M6uXK9wqqNfx8zKsUY4mjCLKP5aUKmT/hawDTTKj3/diZcsikN1kXlUFxHLKNsrNr6 kk6rF5zWUZzDZIl7vCbSASDNtOu5xqmQWgRCQamKnLLyDEhaEbmLrc+lS785ZyFIHQ14 42mYE7AFg2VLJ+RuJiqzSnf0fgkujYp9Fve7WTs5OMmMyO41jjoi4IIJjbwGehaGMKpR tuFPfNoYZzeR+TTvO2ikWACA6yHYBhlxWvxeWhSA3Ft2nXIgBgg1rIG4SjJ4Z7tOjyz0 L5JJ3SiyYHQ5RxqRTJEWjjgBMdpb/7Pigh/x6XkMJ+3J5TI7x5Qvkvms3q9fErVF1S3H wYow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745272711; x=1745877511; 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=EcpcuD7anqMhhZmchi1Jj15ct5OGdKXSmJ/UTKESh3w=; b=VA4HPui9fr+Qs2ytUbMrHh2JCFypFhwnW45T8plmqAcn/sG9FeLBO5wf6wkyskl8wQ sY49P9e0RoS45Jvbuc34a21z2LXVssn0tu9K+kP0+8FlyGV8BZZKcV/gUOEFrg3LjPPV sNDq3M7o3bSYPjfz63C3Adgt//73f/RZBcKrCFTd10ADeo6wSgWc3Pl++lviBTFm1qQZ WtDnEkp2rT2i92Uh0KwDJWc6lef25JyqQSl9CxDKLqo55ZO+Ztejb0u7Owgrbxmxn1PN ndYQQfQyTxvVf05lKic2wO4RFg3f375AMH9cOQTiYxxLqW+HLJYV/p95MghgS6qfm0EB re1A== X-Forwarded-Encrypted: i=1; AJvYcCXfQmKeWweUYezTd6iUfFgHEIUs2GwM20MGZ/6Ql3l3E/70p0eJ1lEzGcNyVM7fvhxqProZmAGJyhldJgQ=@vger.kernel.org X-Gm-Message-State: AOJu0YyGOZakXSdOnr9CZA6semjhpWUhO0zPaWAuydjnSxfQVW8hqalr nyOB1Gml9oOTi+Qtq3+5m3k6EDZ/NDrzAs8p0btXzKUi2dna/cK2JVM+ktQUj+qaj6TvfjiT+iS G X-Google-Smtp-Source: AGHT+IHXIs/Ogd7Xy1uFo5InHHYWM0p69glnRQCeqAR959OOyLerqEP0Pnb8KTz0VXSe5vCiUYWbcDZdU/s= X-Received: from plsr14.prod.google.com ([2002:a17:902:be0e:b0:223:8233:a96c]) (user=yabinc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ce84:b0:224:24d3:6103 with SMTP id d9443c01a7336-22c5361988bmr204811505ad.35.1745272711001; Mon, 21 Apr 2025 14:58:31 -0700 (PDT) Date: Mon, 21 Apr 2025 14:58:18 -0700 In-Reply-To: <20250421215818.3800081-1-yabinc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250421215818.3800081-1-yabinc@google.com> X-Mailer: git-send-email 2.49.0.805.g082f7c87e0-goog Message-ID: <20250421215818.3800081-3-yabinc@google.com> Subject: [PATCH 2/2] coresight: etm-perf: Add AUX_NON_CONTIGUOUS_PAGES to cs_etm PMU From: Yabin Cui To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Jiri Olsa , Ian Rogers , Adrian Hunter , Liang Kan Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Yabin Cui Content-Type: text/plain; charset="UTF-8" The cs_etm PMU, regardless of the underlying trace sink (ETF, ETR or TRBE), doesn't require contiguous pages for its AUX buffer. This patch adds the PERF_PMU_CAP_AUX_NON_CONTIGUOUS_PAGES capability to the cs_etm PMU. This allows the kernel to allocate non-contiguous pages for the AUX buffer, reducing memory fragmentation when using cs_etm. Signed-off-by: Yabin Cui --- drivers/hwtracing/coresight/coresight-etm-perf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index f4cccd68e625..c98646eca7f8 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -899,7 +899,8 @@ int __init etm_perf_init(void) int ret; etm_pmu.capabilities = (PERF_PMU_CAP_EXCLUSIVE | - PERF_PMU_CAP_ITRACE); + PERF_PMU_CAP_ITRACE | + PERF_PMU_CAP_AUX_NON_CONTIGUOUS_PAGES); etm_pmu.attr_groups = etm_pmu_attr_groups; etm_pmu.task_ctx_nr = perf_sw_context; -- 2.49.0.805.g082f7c87e0-goog