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perf hists: Introduce hist_entry__init function 

Move the 'struct hist_entry' initialization code to a separate function.
It'll be useful and more clear for the following patches that introduce
allocation callbacks.

Releasing the hist_entry object in hist_entry__new function
(where it's allocated) rather than in hist_entry__init.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467701765-26194-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-07-05 08:56:03 +02:00 committed by Arnaldo Carvalho de Melo
parent 44530d588e
commit 0a269a6bb3
1 changed files with 77 additions and 70 deletions
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43
tools/perf/util/hist.c
View File

@ -352,26 +352,16 @@ void hists__delete_entries(struct hists *hists)
* histogram, sorted on item, collects periods
*/
static struct hist_entry *hist_entry__new(struct hist_entry *template,
static int hist_entry__init(struct hist_entry *he,
struct hist_entry *template,
bool sample_self)
{
size_t callchain_size = 0;
struct hist_entry *he;
if (symbol_conf.use_callchain)
callchain_size = sizeof(struct callchain_root);
he = zalloc(sizeof(*he) + callchain_size);
if (he != NULL) {
*he = *template;
if (symbol_conf.cumulate_callchain) {
he->stat_acc = malloc(sizeof(he->stat));
if (he->stat_acc == NULL) {
free(he);
return NULL;
}
if (he->stat_acc == NULL)
return -ENOMEM;
memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
if (!sample_self)
memset(&he->stat, 0, sizeof(he->stat));
@ -389,8 +379,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template,
if (he->branch_info == NULL) {
map__zput(he->ms.map);
free(he->stat_acc);
free(he);
return NULL;
return -ENOMEM;
}
memcpy(he->branch_info, template->branch_info,
@ -423,8 +412,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template,
map__put(he->mem_info->daddr.map);
}
free(he->stat_acc);
free(he);
return NULL;
return -ENOMEM;
}
}
INIT_LIST_HEAD(&he->pairs.node);
@ -432,6 +420,25 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template,
if (!symbol_conf.report_hierarchy)
he->leaf = true;
return 0;
}
static struct hist_entry *hist_entry__new(struct hist_entry *template,
bool sample_self)
{
size_t callchain_size = 0;
struct hist_entry *he;
int err = 0;
if (symbol_conf.use_callchain)
callchain_size = sizeof(struct callchain_root);
he = zalloc(sizeof(*he) + callchain_size);
if (he) {
err = hist_entry__init(he, template, sample_self);
if (err)
zfree(&he);
}
return he;