There are places where we have only access to struct hists and need to
know if any of its hist_entries has callchains, like when drawing
headers for the various output modes (stdio, TUI, etc), so, when adding
a new hist_entry, check if it has callchains, storing this info for
later use by hists__has_callchains().
This reimplementation is necessary because not always a 'struct hists'
is allocated together with a 'struct perf evsel', so we can't go from
'hists' to 'perf_event_attr.sample_type & PERF_SAMPLE_CALLCHAIN'.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-hg5g7yddjio3ljwyqnnaj5dt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
.raw_data = sample->raw_data,
.raw_size = sample->raw_size,
.ops = ops,
- };
+ }, *he = hists__findnew_entry(hists, &entry, al, sample_self);
- return hists__findnew_entry(hists, &entry, al, sample_self);
+ if (!hists->has_callchains && he && he->callchain_size != 0)
+ hists->has_callchains = true;
+ return he;
}
struct hist_entry *hists__add_entry(struct hists *hists,
struct events_stats stats;
u64 event_stream;
u16 col_len[HISTC_NR_COLS];
+ bool has_callchains;
int socket_filter;
struct perf_hpp_list *hpp_list;
struct list_head hpp_formats;
static __pure inline bool hists__has_callchains(struct hists *hists)
{
- const struct perf_evsel *evsel = hists_to_evsel(hists);
- return evsel__has_callchain(evsel);
+ return hists->has_callchains;
}
int hists__init(void);