kernel/tools/perf/ui/browsers/hists.c, branch linux-4.17.y

perf hists browser: Clarify top/report browser help

2018-04-18T18:35:49Z

Clarify in the browser help that ESC in tui mode may go back to the previous screen instead of just exiting (was not clear to me) Signed-off-by: Andi Kleen Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/20180406203812.3087-3-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists browser: Remove leftover from row returned from refresh

2018-04-06T15:23:25Z

The per-browser screen refresh routine (ui_browser->refresh()) should return the first row that should be cleaned after the rows just printed, in case not all rows available on the screen gets filled. When moving the extra title lines logic from the hists browser to the generic ui_browser class, one piece of that logic remained in the hists browser and then when going back from the annotate browser to the hists browser in a case where fewer lines were displayed in the hists browser, for instance when filtering the entries per substring, one line of the annotate browser would remain on the screen, fix that. Example of the screen artifact: ================================================================================ Samples: 73K of event 'cycles:ppp', 4000 Hz, Event count (approx.): 45172901394 Overhead Shared O Symbol 0.30% [kernel] [k] __indirect_thunk_start 0.09% [kernel] [k] __x86_indirect_thunk_r10 │ lfence ================================================================================ Here from 'perf top' the view was zoomed with '/thunk' to functions having that substring, then the first was annotated and from the annotate browser ESC was pressed, then the first lines were overwritten, but the 'lfence' line remained due to the off by one bug fixed in this cset. Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Jin Yao Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Fixes: ef9ff6017e3c ("perf ui browser: Move the extra title lines from the hists browser") Link: https://lkml.kernel.org/n/tip-odryfso74eaarm0z3e4v9owx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists browser: Show extra_title_lines in the 'D' debug hotkey

2018-04-06T15:22:06Z

To help in fixing problems in the browser. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-uj0n76yqh5bf98i0edckd47t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf ui browser: Move the extra title lines from the hists browser

2018-04-03T13:24:26Z

This will be useful for the annotate browser as well, that wants to have extra title lines, i.e. the current ui_browser unconditionally reserves the first line for a browser title and the last one for status messages. But some browsers, like the buckets one (hists browser) needs extra lines to show headers, allowing it to be shown or not, press 'H' in 'perf top' or 'perf report' to see this feature. So move that logic to the core ui_browser used by the hists_browser ('perf top' and 'perf report' main interface) so that it can be used by the annotate browser too. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Martin Liška Cc: Namhyung Kim Cc: Wang Nan Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935 Link: https://lkml.kernel.org/n/tip-r38xm3ut37ulbg1o5tn5iise@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists: Move hists__scnprintf_title() away from the TUI code

2018-04-03T13:23:32Z

The previous patch made this function useful to non-TUI parts of the tools, but left it where the function from what it was carved, so that the patch showed more clearly the process. Now just move it outside the TUI parts so that we can finally use it, even when the TUI code doesn't get built/linked. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Martin Liška Cc: Namhyung Kim Cc: Wang Nan Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935 Link: https://lkml.kernel.org/n/tip-hqj7hvcr3mu5lvcqp3cssio6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists: Introduce hists__scnprint_title()

2018-04-03T13:23:18Z

That is not use any struct hists_browser internals, so that it can be shared with the other UIs and tools. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Martin Liška Cc: Namhyung Kim Cc: Wang Nan Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935 Link: https://lkml.kernel.org/n/tip-w8mczjnqnbcj9yzfkv9ja6ro@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists browser: Rename perf_evsel_browser_title to a more descriptive name

2018-04-03T13:22:42Z

Rename it to hists_browser__scnprintf_title() to better reflect that it provides a scnprintf-like function operating on a hists_browser instance. This paves the way to have a non-hists_browser specific function to scnprintf format a title with per evsel information to use in other tools or UIs. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Martin Liška Cc: Namhyung Kim Cc: Wang Nan Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935 Link: https://lkml.kernel.org/n/tip-sntpyzxsnme9jvuz2qntwoh2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf report: Fix the output for stdio events list

2018-03-08T14:30:36Z

Changing the output header for reporting forced groups via --groups option on non grouped events, like: $ perf record -e 'cycles,instructions' $ perf report --stdio --group Before: # Samples: 24 of event 'anon group { cycles:u, instructions:u }' After: # Samples: 24 of events 'cycles:u, instructions:u' Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Fixes: ad52b8cb4886 ("perf report: Add support to display group output for non group events") Link: http://lkml.kernel.org/r/20180307155020.32613-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf top browser: Show sample_freq in browser title line

2018-03-05T12:58:43Z

The '--stdio' 'perf top' UI shows it, so lets remove this UI difference and show it too in '--tui', will be useful for 'perf top --tui -F max'. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-n3wd8n395uo4y9irst29pjic@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf hists browser: Add parameter to disable lost event warning

2018-02-15T12:56:26Z

For overwrite mode, the ringbuffer will be paused. The event lost is expected. It needs a way to notify the browser not print the warning. It will be used later for perf top to disable lost event warning in overwrite mode. There is no behavior change for now. Signed-off-by: Kan Liang Acked-by: Jiri Olsa Cc: Andi Kleen Cc: Jin Yao Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1516310792-208685-15-git-send-email-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo