linux-kernel - [PATCH v4 2/3] libperf: Remove scaling process from perf_mmap__read

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Message-Id: <20211129090627.592149-3-nakamura.shun@fujitsu.com>
Date:   Mon, 29 Nov 2021 18:06:26 +0900
From:   Shunsuke <nakamura.shun@...itsu.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, robh@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Jiri Olsa <jolsa@...nel.org>,
        Shunsuke Nakamura <nakamura.shun@...itsu.com>
Subject: [PATCH v4 2/3] libperf: Remove scaling process from perf_mmap__read_self()

From: Shunsuke Nakamura <nakamura.shun@...itsu.com>

Remove the scaling process from perf_mmap__read_self(), and unify the
counters that can be obtained from perf_evsel__read() to "no scaling".

Acked-by: Jiri Olsa <jolsa@...nel.org>
Signed-off-by: Shunsuke Nakamura <nakamura.shun@...itsu.com>
---
 tools/lib/perf/mmap.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/lib/perf/mmap.c b/tools/lib/perf/mmap.c
index c89dfa5f67b3..aaa457904008 100644
--- a/tools/lib/perf/mmap.c
+++ b/tools/lib/perf/mmap.c
@@ -353,8 +353,6 @@ int perf_mmap__read_self(struct perf_mmap *map, struct perf_counts_values *count
 		count->ena += delta;
 		if (idx)
 			count->run += delta;
-
-		cnt = mul_u64_u64_div64(cnt, count->ena, count->run);
 	}
 
 	count->val = cnt;
-- 
2.25.1