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perf evsel: Introduce perf_evsel__prev() method 

Just one use so far, on the hists browser, for completeness since there
we use perf_evlist__{first,last} and perf_evsel__next() for handling the
TAB and UNTAB keys.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-d09l4lejp5427enuf3igpckw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2013-11-13 15:56:40 -03:00
parent 9a354cdc2f
commit d87fcb4a2d
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/ui/browsers/hists.c
View File

@ -1855,7 +1855,7 @@ browse_hists:
if (pos->node.prev == &evlist->entries)
pos = perf_evlist__last(evlist);
else
pos = list_entry(pos->node.prev, struct perf_evsel, node);
pos = perf_evsel__prev(pos);
goto browse_hists;
case K_ESC:
if (!ui_browser__dialog_yesno(&menu->b,

5
tools/perf/util/evsel.h
View File

@ -279,6 +279,11 @@ static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
return list_entry(evsel->node.next, struct perf_evsel, node);
}
static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel)
{
return list_entry(evsel->node.prev, struct perf_evsel, node);
}
/**
* perf_evsel__is_group_leader - Return whether given evsel is a leader event
*