From: Jin Yao <yao.jin@linux.intel.com>
To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org,
mingo@redhat.com, alexander.shishkin@linux.intel.com
Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com,
kan.liang@intel.com, yao.jin@intel.com,
Jin Yao <yao.jin@linux.intel.com>
Subject: [PATCH v3 01/11] perf util: Create rblist__reset() function
Date: Wed, 29 Nov 2017 20:05:48 +0800 [thread overview]
Message-ID: <1511957158-5813-2-git-send-email-yao.jin@linux.intel.com> (raw)
In-Reply-To: <1511957158-5813-1-git-send-email-yao.jin@linux.intel.com>
Currently we have a rblist__delete() which is used to delete a rblist.
While rblist__delete() will free the pointer of rblist at the end.
It's inconvenience for user to delete a rblist which is not allocated
by something like malloc(). For example, the rblist is defined in a
data structure.
This patch creates a new function rblist__reset() which function is
similar as rblist__delete() but it will not free the rblist.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/util/rblist.c | 24 +++++++++++++++++-------
tools/perf/util/rblist.h | 1 +
2 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/tools/perf/util/rblist.c b/tools/perf/util/rblist.c
index 0dfe27d..eafa663 100644
--- a/tools/perf/util/rblist.c
+++ b/tools/perf/util/rblist.c
@@ -101,20 +101,30 @@ void rblist__init(struct rblist *rblist)
return;
}
+static void remove_nodes(struct rblist *rblist)
+{
+ struct rb_node *pos, *next = rb_first(&rblist->entries);
+
+ while (next) {
+ pos = next;
+ next = rb_next(pos);
+ rblist__remove_node(rblist, pos);
+ }
+}
+
void rblist__delete(struct rblist *rblist)
{
if (rblist != NULL) {
- struct rb_node *pos, *next = rb_first(&rblist->entries);
-
- while (next) {
- pos = next;
- next = rb_next(pos);
- rblist__remove_node(rblist, pos);
- }
+ remove_nodes(rblist);
free(rblist);
}
}
+void rblist__reset(struct rblist *rblist)
+{
+ remove_nodes(rblist);
+}
+
struct rb_node *rblist__entry(const struct rblist *rblist, unsigned int idx)
{
struct rb_node *node;
diff --git a/tools/perf/util/rblist.h b/tools/perf/util/rblist.h
index 4c8638a..048c285 100644
--- a/tools/perf/util/rblist.h
+++ b/tools/perf/util/rblist.h
@@ -35,6 +35,7 @@ void rblist__remove_node(struct rblist *rblist, struct rb_node *rb_node);
struct rb_node *rblist__find(struct rblist *rblist, const void *entry);
struct rb_node *rblist__findnew(struct rblist *rblist, const void *entry);
struct rb_node *rblist__entry(const struct rblist *rblist, unsigned int idx);
+void rblist__reset(struct rblist *rblist);
static inline bool rblist__empty(const struct rblist *rblist)
{
--
2.7.4
next prev parent reply other threads:[~2017-11-29 4:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-29 12:05 [PATCH v3 00/11] perf stat: Enable '--per-thread' on all thread Jin Yao
2017-11-29 12:05 ` Jin Yao [this message]
2017-11-29 12:05 ` [PATCH v3 02/11] perf util: Define a structure for runtime shadow stats Jin Yao
2017-11-29 12:05 ` [PATCH v3 03/11] perf util: Extend rbtree to support " Jin Yao
2017-11-29 12:05 ` [PATCH v3 04/11] perf util: Add rbtree node_delete ops Jin Yao
2017-11-29 12:05 ` [PATCH v3 05/11] perf util: Create the runtime_stat init/free function Jin Yao
2017-11-29 12:05 ` [PATCH v3 06/11] perf util: Update and print per-thread shadow stats Jin Yao
2017-11-29 12:05 ` [PATCH v3 07/11] perf util: Remove a set of shadow stats static variables Jin Yao
2017-11-29 12:05 ` [PATCH v3 08/11] perf stat: Allocate shadow stats buffer for threads Jin Yao
2017-11-29 12:05 ` [PATCH v3 09/11] perf util: Reuse thread_map__new_by_uid to enumerate threads from /proc Jin Yao
2017-11-29 12:05 ` [PATCH v3 10/11] perf stat: Remove --per-thread pid/tid limitation Jin Yao
2017-11-29 12:05 ` [PATCH v3 11/11] perf stat: Resort '--per-thread' result Jin Yao
2017-11-29 15:16 ` [PATCH v3 00/11] perf stat: Enable '--per-thread' on all thread Jiri Olsa
2017-11-30 0:20 ` Jin, Yao
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