diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2016-02-27 03:52:44 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-02-26 18:36:11 -0300 |
| commit | d3a72fd8187b7fa0014394c9dec95ba349b3301e (patch) | |
| tree | 9b124aa9034cdb9fe1d99b940b096562c30e0e37 /tools/perf/util/sort.c | |
| parent | 84b6ee8ea36ff797afa13c297a86ed0144482bee (diff) | |
perf report: Fix indentation of dynamic entries in hierarchy
When dynamic entries are used in the hierarchy mode with multiple
events, the output might not be aligned properly. In the hierarchy
mode, the each sort column is indented using total number of sort keys.
So it keeps track of number of sort keys when adding them. However
a dynamic sort key can be added more than once when multiple events have
same field names. This results in unnecessarily long indentation in the
output.
For example perf kmem records following events:
$ perf evlist --trace-fields -i perf.data.kmem
kmem:kmalloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags
kmem:kmalloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node
kmem:kfree: trace_fields: call_site,ptr
kmem:kmem_cache_alloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags
kmem:kmem_cache_alloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node
kmem:kmem_cache_free: trace_fields: call_site,ptr
kmem:mm_page_alloc: trace_fields: page,order,gfp_flags,migratetype
kmem:mm_page_free: trace_fields: page,order
As you can see, many field names shared between kmem events. So adding
'ptr' dynamic sort key alone will set nr_sort_keys to 6. And this adds
many unnecessary spaces between columns.
Before:
$ perf report -i perf.data.kmem --hierarchy -s ptr -g none --stdio
...
# Overhead ptr
# ....................... ...................................
#
99.89% 0xffff8803ffb79720
0.06% 0xffff8803d228a000
0.03% 0xffff8803f7678f00
0.00% 0xffff880401dc5280
0.00% 0xffff880406172380
0.00% 0xffff8803ffac3a00
0.00% 0xffff8803ffac1600
After:
# Overhead ptr
# ........ ....................
#
99.89% 0xffff8803ffb79720
0.06% 0xffff8803d228a000
0.03% 0xffff8803f7678f00
0.00% 0xffff880401dc5280
0.00% 0xffff880406172380
0.00% 0xffff8803ffac3a00
0.00% 0xffff8803ffac1600
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456512767-1164-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/sort.c')
| -rw-r--r-- | tools/perf/util/sort.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 6bee8bdfb91b..2beb7a6360a4 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -2633,6 +2633,9 @@ out: int setup_sorting(struct perf_evlist *evlist) { int err; + struct hists *hists; + struct perf_evsel *evsel; + struct perf_hpp_fmt *fmt; err = __setup_sorting(evlist); if (err < 0) @@ -2644,6 +2647,22 @@ int setup_sorting(struct perf_evlist *evlist) return err; } + evlist__for_each(evlist, evsel) { + hists = evsel__hists(evsel); + hists->nr_sort_keys = perf_hpp_list.nr_sort_keys; + + /* + * If dynamic entries were used, it might add multiple + * entries to each evsel for a single field name. Set + * actual number of sort keys for each hists. + */ + perf_hpp_list__for_each_sort_list(&perf_hpp_list, fmt) { + if (perf_hpp__is_dynamic_entry(fmt) && + !perf_hpp__defined_dynamic_entry(fmt, hists)) + hists->nr_sort_keys--; + } + } + reset_dimensions(); /* |