From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 35FE21EB9FA for ; Wed, 9 Apr 2025 06:11:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744179078; cv=none; b=ANQXPpcXinm4sQc/A9FL7kDx+r40fVqWUZAyQq6FHAW2vNS3mSncKholp3RGyIiRV8XZan77BRH42tBs42Acle5QybmI6yn6AJBwR6ImPl2+4EBot2AetsMUho+dpLyCoLi8yXzpVC+2f9bG66fe9tsBjCtp5lAHXdb5GoPiIYs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744179078; c=relaxed/simple; bh=DOdUTxLI7/zQjgCEpln88RgVE7J5L5+nYgmvVB4LmPU=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Content-Type; b=Jk16N4L8Ka/nvrGnp16zOW7PH2vt1+qraIDZhNLl+mf4lp0la08BEdXwq107tvb7wB5QNiymXOauCvKbToDRGWTzA3cQkHaelz5Gp2H1dODjjZujzEhjZYxInEiP9TUM7Zm0VMxIkQsJeyaBRrM2KHuZPIba7WqGnRUfXGDxxWg= 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=tiYopxWL; arc=none smtp.client-ip=209.85.216.74 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="tiYopxWL" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-3011bee1751so6019695a91.1 for ; Tue, 08 Apr 2025 23:11:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1744179076; x=1744783876; darn=vger.kernel.org; h=to:from:subject:message-id:references:mime-version:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=bbV+FoNiQvVRc13/UCAfNK3Jak/b5U1tJ5tpMxpqA0g=; b=tiYopxWLTVW9GlcaBpiyVJ+d/pvbALD6fJ6/voKX3tS2BnL6QZjtKyfU3NakGiR/oJ 5bvOInU+dJBS12/s1CxPqde4rDbeC8alpA3E0+d0egO9eiSuIVoeklTCaCzEOwsKfdej SP+Ptheb2WVS5l+uQ78HDURAzNKVOuVr5++Vv5HOEgI+PM6fj3u9oySawNVV6Yyz0xGL LMavk2JbeIMJ49T76uhBZ0ELQgZ1FlPnODYa04gSDtY2mvRZYvmWzu1T/7aYf24akyHu wTjM3M4K1C9g28AsuBit/TVowFinLFtzkH3GGbT0Pki5fJaq5KMw9rv41vhXpYI1wt8L 2wug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744179076; x=1744783876; h=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=bbV+FoNiQvVRc13/UCAfNK3Jak/b5U1tJ5tpMxpqA0g=; b=awUpLeOBUc0lubJVQ8CNy2cN+avisYBSLRdhWXS+1iIo4uE/IaLE90PlNUtI8X2EDH Fn7tKGzGl88vt3hIIiszxuHLVYl/EZSztaq47d9f1pn6oMzQA6OGKExGgveUmVeSFyXT n+OYGaSo8JM4gWE7Ud17xkkpYd60YSDWzXvqZVd0ejBNsxB9WANO9XVsXm/5tKLtyVs1 l0yi6mt2JOqSOfyG8gqffy7fWo5hiLqIAxrxd0dm6kkmLKi0V/qpL89NDLb2wKcl7/Ua NZ72f+tSdtNM2CuICZ2xdWYfryHtQegmuyPlhSDXXUb8HDUwGstqEhVKojNpq3Lch/JN 5O6A== X-Forwarded-Encrypted: i=1; AJvYcCX0GyWyEn0ZHofKFhvbrc9H72Z6jU724dd24FXtQxN0ydvpg7bpxWMRXys/Bx0Fps69xsumjA7MDPNx1WE=@vger.kernel.org X-Gm-Message-State: AOJu0YxhQG95KSoYYEsyYQTMWRNXMT33OwGZX7SgIfGvlHN2bpellYMP FSV6airVd1p3FnLvPVY2xsCf31+tn9wvBTB4DN7vK2lznsbRwwCoFySnQdfKuAfMcx53revjl3f /vCFuvA== X-Google-Smtp-Source: AGHT+IG140Zd6/7lVXAjnge1pa3Un7YaR/FXpKWuwkcmM+zdDiv8SQSei2XhleF7r5K3eMIAKQY2frnqpZoe X-Received: from pjbsv7.prod.google.com ([2002:a17:90b:5387:b0:2ff:5df6:7e03]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:5243:b0:2ff:64a0:4a57 with SMTP id 98e67ed59e1d1-306dd5565damr1543288a91.26.1744179076598; Tue, 08 Apr 2025 23:11:16 -0700 (PDT) Date: Tue, 8 Apr 2025 23:10:40 -0700 In-Reply-To: <20250409061043.700792-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250409061043.700792-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.504.g3bcea36a83-goog Message-ID: <20250409061043.700792-14-irogers@google.com> Subject: [PATCH v4 13/16] perf intel-tpebs: Use stats for retirement latency statistics 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 , Weilin Wang , James Clark , Xu Yang , John Garry , Howard Chu , Levi Yun , Dominique Martinet , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" struct stats provides access to mean, min and max. It also provides uniformity with statistics code used elsewhere in perf. Signed-off-by: Ian Rogers --- tools/perf/util/intel-tpebs.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/tools/perf/util/intel-tpebs.c b/tools/perf/util/intel-tpebs.c index a9446e7a1c5c..de9fea601964 100644 --- a/tools/perf/util/intel-tpebs.c +++ b/tools/perf/util/intel-tpebs.c @@ -18,6 +18,7 @@ #include "evsel.h" #include "mutex.h" #include "session.h" +#include "stat.h" #include "tool.h" #include "cpumap.h" #include "metricgroup.h" @@ -42,12 +43,8 @@ struct tpebs_retire_lat { struct evsel *evsel; /** @event: Event passed to perf record. */ char *event; - /* Count of retire_latency values found in sample data */ - size_t count; - /* Sum of all the retire_latency values in sample data */ - int sum; - /* Average of retire_latency, val = sum / count */ - double val; + /** @stats: Recorded retirement latency stats. */ + struct stats stats; /* Has the event been sent to perf record? */ bool started; }; @@ -145,9 +142,7 @@ static int process_sample_event(const struct perf_tool *tool __maybe_unused, * latency value will be used. Save the number of samples and the sum of * retire latency value for each event. */ - t->count += 1; - t->sum += sample->retire_lat; - t->val = (double) t->sum / t->count; + update_stats(&t->stats, sample->retire_lat); mutex_unlock(tpebs_mtx_get()); return 0; } @@ -522,7 +517,7 @@ int evsel__tpebs_read(struct evsel *evsel, int cpu_map_idx, int thread) return ret; mutex_lock(tpebs_mtx_get()); } - val = rint(t->val); + val = rint(t->stats.mean); mutex_unlock(tpebs_mtx_get()); if (old_count) { -- 2.49.0.504.g3bcea36a83-goog