LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: tip-bot for He Kuang <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: namhyung@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org,
	tglx@linutronix.de, a.p.zijlstra@chello.nl, hekuang@huawei.com,
	paulus@samba.org, acme@redhat.com, mingo@kernel.org,
	jolsa@kernel.org, wangnan0@huawei.com
Subject: [tip:perf/core] perf hists browser: Fix UI bug after zoom into thread/dso/symbol
Date: Sat, 14 Mar 2015 00:04:50 -0700	[thread overview]
Message-ID: <tip-a8cd1f4393032cd87e98803346865cdbceb15ad3@git.kernel.org> (raw)
In-Reply-To: <1426077363-855-2-git-send-email-hekuang@huawei.com>

Commit-ID:  a8cd1f4393032cd87e98803346865cdbceb15ad3
Gitweb:     http://git.kernel.org/tip/a8cd1f4393032cd87e98803346865cdbceb15ad3
Author:     He Kuang <hekuang@huawei.com>
AuthorDate: Wed, 11 Mar 2015 20:36:03 +0800
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 12 Mar 2015 12:39:59 -0300

perf hists browser: Fix UI bug after zoom into thread/dso/symbol

When zoom into thread/dso/symbol, the fold/unfold stat is cleared in
hists__filter_by_thread/dso/symbol(), but h->nr_rows is not cleared. So
if we toggle fold stat on the unfold entires, nr_entries got a wrong
value.

This bug can be reproduced as follows:

$ perf record -g -e syscalls:sys_enter_open ls
$ perf report

    Children      Self  Command  Shared Object            Symbol
  ================================================================
  +   50.00%     0.00%  ls       ld64.so  [.]  _dl_get_ready_to_run
  -   50.00%     0.00%  ls       ld64.so  [.]  _dl_load_shared_library
      _dl_load_shared_library <= [Zoom into thread/dso]
      _dl_get_ready_to_run
      _start
  ...

In the new thread hists, all entries reset to fold, if we unfold the
same entry as we previously unfolded, nr_entries got wrong value, and we
can't move down cursor to bottom row.

                                                         Thread: ls
    Children      Self  Command  Shared Object            Symbol
  ================================================================
  +   50.00%     0.00%  ls       ld64.so  [.]  _dl_get_ready_to_run
  -   50.00%     0.00%  ls       ld64.so  [.]  _dl_load_shared_library
      _dl_load_shared_library
      _dl_get_ready_to_run <= [cursor may stop here, can't move down]
      _start
  ...

This patch clear h->nr_rows to fix this bug.

Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1426077363-855-2-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/hist.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 95f5ab7..d9a6d35 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1171,6 +1171,7 @@ static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h
 	/* force fold unfiltered entry for simplicity */
 	h->ms.unfolded = false;
 	h->row_offset = 0;
+	h->nr_rows = 0;
 
 	hists->stats.nr_non_filtered_samples += h->stat.nr_events;
 

  parent reply	other threads:[~2015-03-14  7:05 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-06 12:51 [PATCH] perf hists browser: Fix UI bug after fold/unfold He Kuang
2015-03-10  6:28 ` Namhyung Kim
2015-03-10  7:26   ` He Kuang
2015-03-11  0:26     ` Namhyung Kim
2015-03-11 12:36       ` [PATCHv2 1/2] " He Kuang
2015-03-11 12:36         ` [PATCHv2 2/2] perf hists browser: Fix UI bug after zoom into thread/dso/symbol He Kuang
2015-03-11 14:12           ` Arnaldo Carvalho de Melo
2015-03-12  8:05           ` Namhyung Kim
2015-03-14  7:04           ` tip-bot for He Kuang [this message]
2015-03-11 13:48         ` [PATCHv2 1/2] perf hists browser: Fix UI bug after fold/unfold Arnaldo Carvalho de Melo
2015-03-12  7:21           ` [PATCHv3] " He Kuang
2015-03-12  7:51             ` Namhyung Kim
2015-03-12 16:19               ` Arnaldo Carvalho de Melo
2015-03-14  7:05             ` [tip:perf/core] " tip-bot for He Kuang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=tip-a8cd1f4393032cd87e98803346865cdbceb15ad3@git.kernel.org \
    --to=tipbot@zytor.com \
    --cc=a.p.zijlstra@chello.nl \
    --cc=acme@redhat.com \
    --cc=hekuang@huawei.com \
    --cc=hpa@zytor.com \
    --cc=jolsa@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tip-commits@vger.kernel.org \
    --cc=mingo@kernel.org \
    --cc=namhyung@kernel.org \
    --cc=paulus@samba.org \
    --cc=tglx@linutronix.de \
    --cc=wangnan0@huawei.com \
    --subject='Re: [tip:perf/core] perf hists browser: Fix UI bug after zoom into thread/dso/symbol' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).