From: Peter Zijlstra <peterz@infradead.org>
To: rjw@rjwysocki.net, oleg@redhat.com, mingo@kernel.org,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, mgorman@suse.de, ebiederm@xmission.com,
bigeasy@linutronix.de, Will Deacon <will@kernel.org>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
tj@kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH v3 5/6] sched/wait: Add wait_event_state()
Date: Mon, 22 Aug 2022 13:18:21 +0200 [thread overview]
Message-ID: <20220822114648.989212021@infradead.org> (raw)
In-Reply-To: 20220822111816.760285417@infradead.org
Allows waiting with a custom @state.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
include/linux/wait.h | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -931,6 +931,34 @@ extern int do_wait_intr_irq(wait_queue_h
__ret; \
})
+#define __wait_event_state(wq, condition, state) \
+ ___wait_event(wq, condition, state, 0, 0, schedule())
+
+/**
+ * wait_event_state - sleep until a condition gets true
+ * @wq_head: the waitqueue to wait on
+ * @condition: a C expression for the event to wait for
+ * @state: state to sleep in
+ *
+ * The process is put to sleep (@state) until the @condition evaluates to true
+ * or a signal is received. The @condition is checked each time the waitqueue
+ * @wq_head is woken up.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ *
+ * The function will return -ERESTARTSYS if it was interrupted by a
+ * signal and 0 if @condition evaluated to true.
+ */
+#define wait_event_state(wq_head, condition, state) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_state(wq_head, condition, state); \
+ __ret; \
+})
+
#define __wait_event_killable_timeout(wq_head, condition, timeout) \
___wait_event(wq_head, ___wait_cond_timeout(condition), \
TASK_KILLABLE, 0, timeout, \
next prev parent reply other threads:[~2022-08-22 11:48 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 11:18 [PATCH v3 0/6] Freezer Rewrite Peter Zijlstra
2022-08-22 11:18 ` [PATCH v3 1/6] freezer: Have {,un}lock_system_sleep() save/restore flags Peter Zijlstra
2022-08-23 17:25 ` Rafael J. Wysocki
2022-09-09 9:00 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2022-08-22 11:18 ` [PATCH v3 2/6] freezer,umh: Clean up freezer/initrd interaction Peter Zijlstra
2022-08-23 17:28 ` Rafael J. Wysocki
2022-09-09 9:00 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2022-08-22 11:18 ` [PATCH v3 3/6] sched: Change wait_task_inactive()s match_state Peter Zijlstra
2022-09-04 10:44 ` Ingo Molnar
2022-09-06 10:54 ` Peter Zijlstra
2022-09-07 7:23 ` Ingo Molnar
2022-09-07 9:29 ` Peter Zijlstra
2022-09-09 9:00 ` [tip: sched/core] sched: Rename task_running() to task_on_cpu() tip-bot2 for Peter Zijlstra
2022-09-07 9:30 ` [PATCH v3 3/6] sched: Change wait_task_inactive()s match_state Peter Zijlstra
2022-09-09 9:00 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2022-08-22 11:18 ` [PATCH v3 4/6] sched/completion: Add wait_for_completion_state() Peter Zijlstra
2022-08-23 17:32 ` Rafael J. Wysocki
2022-08-26 21:54 ` Peter Zijlstra
2022-09-04 10:46 ` Ingo Molnar
2022-09-06 10:24 ` Peter Zijlstra
2022-09-07 7:35 ` Ingo Molnar
2022-09-07 9:24 ` Peter Zijlstra
2022-09-09 9:00 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2022-08-22 11:18 ` Peter Zijlstra [this message]
2022-09-04 9:54 ` [PATCH v3 5/6] sched/wait: Add wait_event_state() Ingo Molnar
2022-09-06 11:08 ` Peter Zijlstra
2022-09-07 7:26 ` Ingo Molnar
2022-09-09 9:00 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2022-08-22 11:18 ` [PATCH v3 6/6] freezer,sched: Rewrite core freezer logic Peter Zijlstra
2022-08-23 17:36 ` Rafael J. Wysocki
2022-09-04 10:09 ` Ingo Molnar
2022-09-06 11:23 ` Peter Zijlstra
2022-09-07 7:30 ` Ingo Molnar
2022-09-09 9:00 ` [tip: sched/core] sched: Show PF_flag holes tip-bot2 for Peter Zijlstra
2022-09-09 9:00 ` [tip: sched/core] freezer,sched: Rewrite core freezer logic tip-bot2 for Peter Zijlstra
2022-09-23 7:21 ` [PATCH v3 6/6] " Christian Borntraeger
2022-09-23 7:53 ` Christian Borntraeger
2022-09-26 8:06 ` Christian Borntraeger
2022-09-26 10:55 ` Christian Borntraeger
2022-09-26 12:13 ` Peter Zijlstra
2022-09-26 12:13 ` Peter Zijlstra
2022-09-26 12:32 ` Christian Borntraeger
2022-09-26 12:32 ` Christian Borntraeger
2022-09-26 12:55 ` Peter Zijlstra
2022-09-26 12:55 ` Peter Zijlstra
2022-09-26 13:23 ` Christian Borntraeger
2022-09-26 13:23 ` Christian Borntraeger
2022-09-26 13:37 ` Peter Zijlstra
2022-09-26 13:37 ` Peter Zijlstra
2022-09-26 13:54 ` Christian Borntraeger
2022-09-26 13:54 ` Christian Borntraeger
2022-09-26 15:49 ` Christian Borntraeger
2022-09-26 15:49 ` Christian Borntraeger
2022-09-26 18:06 ` Peter Zijlstra
2022-09-26 18:06 ` Peter Zijlstra
2022-09-26 18:22 ` Peter Zijlstra
2022-09-26 18:22 ` Peter Zijlstra
2022-09-27 5:35 ` Christian Borntraeger
2022-09-27 5:35 ` Christian Borntraeger
2022-09-28 5:44 ` Christian Borntraeger
2022-09-28 5:44 ` Christian Borntraeger
2022-10-21 17:22 ` Ville Syrjälä
2022-10-21 17:22 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-10-25 4:52 ` [PATCH v3 6/6] freezer,sched: " Ville Syrjälä
2022-10-25 4:52 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-10-25 10:49 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-10-25 10:49 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-10-26 10:32 ` [PATCH v3 6/6] freezer,sched: " Ville Syrjälä
2022-10-26 10:32 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-10-26 11:43 ` Peter Zijlstra
2022-10-26 11:43 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-10-26 12:12 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-10-26 12:12 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-10-26 12:14 ` Peter Zijlstra
2022-10-26 12:14 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-10-27 5:58 ` [PATCH v3 6/6] freezer,sched: " Chen Yu
2022-10-27 5:58 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Chen Yu
2022-10-27 7:39 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-10-27 7:39 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-10-27 13:09 ` [PATCH v3 6/6] freezer,sched: " Ville Syrjälä
2022-10-27 13:09 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-10-27 16:53 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-10-27 16:53 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-11-02 16:57 ` [PATCH v3 6/6] freezer,sched: " Ville Syrjälä
2022-11-02 16:57 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-11-02 22:16 ` [PATCH v3 6/6] freezer,sched: " Peter Zijlstra
2022-11-02 22:16 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Peter Zijlstra
2022-11-07 11:47 ` [PATCH v3 6/6] freezer,sched: " Ville Syrjälä
2022-11-07 11:47 ` [Intel-gfx] [PATCH v3 6/6] freezer, sched: " Ville Syrjälä
2022-11-10 20:27 ` Ville Syrjälä
2022-11-10 20:27 ` Ville Syrjälä
2022-11-14 9:10 ` [tip: sched/urgent] sched: Fix race in task_call_func() tip-bot2 for Peter Zijlstra
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=20220822114648.989212021@infradead.org \
--to=peterz@infradead.org \
--cc=bigeasy@linutronix.de \
--cc=dietmar.eggemann@arm.com \
--cc=ebiederm@xmission.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mgorman@suse.de \
--cc=mingo@kernel.org \
--cc=oleg@redhat.com \
--cc=rjw@rjwysocki.net \
--cc=rostedt@goodmis.org \
--cc=tj@kernel.org \
--cc=vincent.guittot@linaro.org \
--cc=will@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.