From nobody Thu Dec 18 08:15:54 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 C267D193426 for ; Fri, 6 Dec 2024 04:40:41 +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=1733460044; cv=none; b=K3sOLKKgRtzd9bRCll5VShCY6KkYhs/qEMjjjNyqxjAcNp+mtq6qccnjZm4DiKpiPdiO8vLEUV+uqbBa1U5fdXIBINV01oV6021evmF2EX/C8lZUyJOHwOl3pJr53xOthbSqCXO13dC5DmLolGfIVUO0KuvrFv2r694EK69h58U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733460044; c=relaxed/simple; bh=NvHv1JvgCIj4wxEXi2qnifVrg5VM8kZfYBZjSzBa3dg=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=IOAuy4HNt/VDOc5TeNB8/Nm5gngErU+tfO0hUoEQF5FQDCxgjFwVIGtUaXDOn5G/dcOsZNKdH/rW/hKntjc1g0DTzQSqCQfljqaj5b1r+t/cjR5YsDfc3rT7VVYhj1SAhffZVzCEjgCGbESRQt9xNHL8/H7i9tFFNMVWcFMYVXY= 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=ITPvaYeR; 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="ITPvaYeR" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-e3a109984a5so309546276.3 for ; Thu, 05 Dec 2024 20:40:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1733460041; x=1734064841; 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=7HooQRn/pxrZs6KSP4MCRwKNyrc2n5wJOPs3/bci4Uk=; b=ITPvaYeRcgVc38hqEm+Bpq2IJRYcrWPrEtidw63fxdkb4xkrQrGPRGkr3eMrUd65PP NT+brCB7suidmG6yIuhtu25HYz+RJTo9UpLHMim2ALkqkbOZ7+FTHuZfWgMBZODnkA72 Vzk/r3l+m7zQsGT1QeMy3+yXQDi7tcZ1ksDjQfDd8yXzNRWVVE3gSHBbwf6cYB/LNS5W TEfGX15BR4/8Ko7oUm5VWveuA1LUq6VsIog0l99rEDb1sO0NOzTpdhZyIXmNtq/YmSx5 atpmoPDWX+vlonPr8KrmyP6g+B+ewbdBeQOoPMvrV9i+JYh9exa+rTVsmIILhKxZpU3l khAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733460041; x=1734064841; 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=7HooQRn/pxrZs6KSP4MCRwKNyrc2n5wJOPs3/bci4Uk=; b=CXcH2gaKNEmOlKxf3JKE4Nzc8ULxBjeH1M3CWVvCfSSdHY7kqwsDKLAW9Hargk/gZz VxNpx4oo7hhKG9zsn+cTicd0c98D8N8WXE3vbF39nL/hszB98t13MeSolRWrHUz13SEK 204McSZptuNhrc7+WELT+gFCDetcyEpTsJjFTjFjwiN17v1KUmGEROhoD5BN9aShrmQ/ y8ekS65HlRmfmeAQ2OWT3wFu9zdtZdeoWxE2thmUtQaZbBCTeVpudoBzN7hHzg3b88BB UluUqW72bWOQYvVEe3KEsk3Yi8QsTWVhMJjk9wzt9RO7yrQvnyaSqOHOmopIQQRKdjEh WGpw== X-Forwarded-Encrypted: i=1; AJvYcCWmuZVh0ArFRUBcK/22/hAiLeiny6g+sumeG2jdUEpo8jN+p8lBHc9PDhUup3CPlfaZuC5iiZcOFHY0dJA=@vger.kernel.org X-Gm-Message-State: AOJu0YzfqsUciM8YkQp8y2v/7LQV+i1KibmJ7FwBqwvmx6RThFFrZ1ft P41q5l5gDqDEI3YrTTHWYwFNmfOkdPYw5o/CNCQ/6bN53GJlB5zDZMlRddSnq0P/yzJAWGjXz1U oIscalQ== X-Google-Smtp-Source: AGHT+IHIgCIgWFyGcAWDY7516J4vjQr1pq+XRf6N+uB0/z07nFo7rInpoiDluy+8thojGoFnFz9roVvtzpil X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:eb75:393:2a8c:1440]) (user=irogers job=sendgmr) by 2002:a25:7c06:0:b0:e38:d1e:af86 with SMTP id 3f1490d57ef6-e3a0b07413dmr731276.2.1733460040757; Thu, 05 Dec 2024 20:40:40 -0800 (PST) Date: Thu, 5 Dec 2024 20:40:28 -0800 In-Reply-To: <20241206044035.1062032-1-irogers@google.com> Message-Id: <20241206044035.1062032-2-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241206044035.1062032-1-irogers@google.com> X-Mailer: git-send-email 2.47.0.338.g60cca15819-goog Subject: [PATCH v1 1/8] perf: Increase MAX_NR_CPUS to 4096 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 , James Clark , Kyle Meyer , Ben Gainey , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Kyle Meyer Systems have surpassed 2048 CPUs. Increase MAX_NR_CPUS to 4096. Bitmaps declared with MAX_NR_CPUS bits will increase from 256B to 512B, cpus_runtime will increase from 81960B to 163880B, and max_entries will increase from 8192B to 16384B. Signed-off-by: Kyle Meyer Reviewed-by: Ian Rogers --- tools/lib/perf/include/internal/cpumap.h | 2 +- tools/perf/perf.h | 2 +- tools/perf/util/bpf_skel/kwork_top.bpf.c | 4 +++- 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/incl= ude/internal/cpumap.h index 49649eb51ce4..3cf28522004e 100644 --- a/tools/lib/perf/include/internal/cpumap.h +++ b/tools/lib/perf/include/internal/cpumap.h @@ -22,7 +22,7 @@ DECLARE_RC_STRUCT(perf_cpu_map) { }; =20 #ifndef MAX_NR_CPUS -#define MAX_NR_CPUS 2048 +#define MAX_NR_CPUS 4096 #endif =20 struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus); diff --git a/tools/perf/perf.h b/tools/perf/perf.h index c004dd4e65a3..3cb40965549f 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -3,7 +3,7 @@ #define _PERF_PERF_H =20 #ifndef MAX_NR_CPUS -#define MAX_NR_CPUS 2048 +#define MAX_NR_CPUS 4096 #endif =20 enum perf_affinity { diff --git a/tools/perf/util/bpf_skel/kwork_top.bpf.c b/tools/perf/util/bpf= _skel/kwork_top.bpf.c index 594da91965a2..73e32e063030 100644 --- a/tools/perf/util/bpf_skel/kwork_top.bpf.c +++ b/tools/perf/util/bpf_skel/kwork_top.bpf.c @@ -18,7 +18,9 @@ enum kwork_class_type { }; =20 #define MAX_ENTRIES 102400 -#define MAX_NR_CPUS 2048 +#ifndef MAX_NR_CPUS +#define MAX_NR_CPUS 4096 +#endif #define PF_KTHREAD 0x00200000 #define MAX_COMMAND_LEN 16 =20 --=20 2.47.0.338.g60cca15819-goog