From: "tip-bot2 for Peter Zijlstra" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Davidlohr Bueso <dbueso@suse.de>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: sched/core] rbtree, timerqueue: Use rb_add_cached()
Date: Wed, 17 Feb 2021 13:17:37 -0000 [thread overview]
Message-ID: <161356785704.20312.639489769023750532.tip-bot2@tip-bot2> (raw)
The following commit has been merged into the sched/core branch of tip:
Commit-ID: 798172b1374e28ecf687d6662fc5fdaec5c65385
Gitweb: https://git.kernel.org/tip/798172b1374e28ecf687d6662fc5fdaec5c65385
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Wed, 29 Apr 2020 17:07:53 +02:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Wed, 17 Feb 2021 14:08:01 +01:00
rbtree, timerqueue: Use rb_add_cached()
Reduce rbtree boiler plate by using the new helpers.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
---
lib/timerqueue.c | 28 +++++++++-------------------
1 file changed, 9 insertions(+), 19 deletions(-)
diff --git a/lib/timerqueue.c b/lib/timerqueue.c
index c527109..cdb9c76 100644
--- a/lib/timerqueue.c
+++ b/lib/timerqueue.c
@@ -14,6 +14,14 @@
#include <linux/rbtree.h>
#include <linux/export.h>
+#define __node_2_tq(_n) \
+ rb_entry((_n), struct timerqueue_node, node)
+
+static inline bool __timerqueue_less(struct rb_node *a, const struct rb_node *b)
+{
+ return __node_2_tq(a)->expires < __node_2_tq(b)->expires;
+}
+
/**
* timerqueue_add - Adds timer to timerqueue.
*
@@ -26,28 +34,10 @@
*/
bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node)
{
- struct rb_node **p = &head->rb_root.rb_root.rb_node;
- struct rb_node *parent = NULL;
- struct timerqueue_node *ptr;
- bool leftmost = true;
-
/* Make sure we don't add nodes that are already added */
WARN_ON_ONCE(!RB_EMPTY_NODE(&node->node));
- while (*p) {
- parent = *p;
- ptr = rb_entry(parent, struct timerqueue_node, node);
- if (node->expires < ptr->expires) {
- p = &(*p)->rb_left;
- } else {
- p = &(*p)->rb_right;
- leftmost = false;
- }
- }
- rb_link_node(&node->node, parent, p);
- rb_insert_color_cached(&node->node, &head->rb_root, leftmost);
-
- return leftmost;
+ return rb_add_cached(&node->node, &head->rb_root, __timerqueue_less);
}
EXPORT_SYMBOL_GPL(timerqueue_add);
reply other threads:[~2021-02-17 13:28 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=161356785704.20312.639489769023750532.tip-bot2@tip-bot2 \
--to=tip-bot2@linutronix.de \
--cc=dbueso@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).