From: "tip-bot2 for Andres Freund" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Andres Freund <andres@anarazel.de>,
Michael Petlan <mpetlan@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
stable@vger.kernel.org, #@tip-bot2.tec.linutronix.de,
v3.16+@tip-bot2.tec.linutronix.de,
Arnaldo Carvalho de Melo <acme@redhat.com>, x86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [tip: perf/core] perf c2c: Fix return type for histogram sorting comparision functions
Date: Mon, 20 Jan 2020 08:27:12 -0000 [thread overview]
Message-ID: <157950883206.396.14634708982531515260.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20200109043030.233746-1-andres@anarazel.de>
The following commit has been merged into the perf/core branch of tip:
Commit-ID: c1c8013ec34d7163431d18367808ea40b2e305f8
Gitweb: https://git.kernel.org/tip/c1c8013ec34d7163431d18367808ea40b2e305f8
Author: Andres Freund <andres@anarazel.de>
AuthorDate: Wed, 08 Jan 2020 20:30:30 -08:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Tue, 14 Jan 2020 13:29:21 -03:00
perf c2c: Fix return type for histogram sorting comparision functions
Commit 722ddfde366f ("perf tools: Fix time sorting") changed - correctly
so - hist_entry__sort to return int64. Unfortunately several of the
builtin-c2c.c comparison routines only happened to work due the cast
caused by the wrong return type.
This causes meaningless ordering of both the cacheline list, and the
cacheline details page. E.g a simple:
perf c2c record -a sleep 3
perf c2c report
will result in cacheline table like
=================================================
Shared Data Cache Line Table
=================================================
#
# ------- Cacheline ---------- Total Tot - LLC Load Hitm - - Store Reference - - Load Dram - LLC Total - Core Load Hit - - LLC Load Hit -
# Index Address Node PA cnt records Hitm Total Lcl Rmt Total L1Hit L1Miss Lcl Rmt Ld Miss Loads FB L1 L2 Llc Rmt
# ..... .............. .... ...... ....... ...... ..... ..... ... .... ..... ...... ...... .... ...... ..... ..... ..... ... .... .......
0 0x7f0d27ffba00 N/A 0 52 0.12% 13 6 7 12 12 0 0 7 14 40 4 16 0 0 0
1 0x7f0d27ff61c0 N/A 0 6353 14.04% 1475 801 674 779 779 0 0 718 1392 5574 1299 1967 0 115 0
2 0x7f0d26d3ec80 N/A 0 71 0.15% 16 4 12 13 13 0 0 12 24 58 1 20 0 9 0
3 0x7f0d26d3ec00 N/A 0 98 0.22% 23 17 6 19 19 0 0 6 12 79 0 40 0 10 0
i.e. with the list not being ordered by Total Hitm.
Fixes: 722ddfde366f ("perf tools: Fix time sorting")
Signed-off-by: Andres Freund <andres@anarazel.de>
Tested-by: Michael Petlan <mpetlan@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org # v3.16+
Link: http://lore.kernel.org/lkml/20200109043030.233746-1-andres@anarazel.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-c2c.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 3463512..246ac0b 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -595,8 +595,8 @@ tot_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
{
struct c2c_hist_entry *c2c_left;
struct c2c_hist_entry *c2c_right;
- unsigned int tot_hitm_left;
- unsigned int tot_hitm_right;
+ uint64_t tot_hitm_left;
+ uint64_t tot_hitm_right;
c2c_left = container_of(left, struct c2c_hist_entry, he);
c2c_right = container_of(right, struct c2c_hist_entry, he);
@@ -629,7 +629,8 @@ __f ## _cmp(struct perf_hpp_fmt *fmt __maybe_unused, \
\
c2c_left = container_of(left, struct c2c_hist_entry, he); \
c2c_right = container_of(right, struct c2c_hist_entry, he); \
- return c2c_left->stats.__f - c2c_right->stats.__f; \
+ return (uint64_t) c2c_left->stats.__f - \
+ (uint64_t) c2c_right->stats.__f; \
}
#define STAT_FN(__f) \
@@ -682,7 +683,8 @@ ld_llcmiss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
c2c_left = container_of(left, struct c2c_hist_entry, he);
c2c_right = container_of(right, struct c2c_hist_entry, he);
- return llc_miss(&c2c_left->stats) - llc_miss(&c2c_right->stats);
+ return (uint64_t) llc_miss(&c2c_left->stats) -
+ (uint64_t) llc_miss(&c2c_right->stats);
}
static uint64_t total_records(struct c2c_stats *stats)
prev parent reply other threads:[~2020-01-20 8:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-09 4:30 [PATCH] perf c2c: Fix sorting Andres Freund
2020-01-09 8:48 ` Jiri Olsa
2020-01-09 17:00 ` Andres Freund
2020-01-09 21:46 ` Jiri Olsa
2020-01-14 16:28 ` Arnaldo Carvalho de Melo
2020-01-09 9:58 ` Michael Petlan
2020-01-09 13:18 ` Arnaldo Carvalho de Melo
2020-01-09 13:22 ` Jiri Olsa
2020-01-20 8:27 ` tip-bot2 for Andres Freund [this message]
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