The patch titled
workqueue: introduce workqueue_struct->singlethread
has been removed from the -mm tree. Its filename was
workqueue-introduce-workqueue_struct-singlethread.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: workqueue: introduce workqueue_struct->singlethread
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Add explicit workqueue_struct->singlethread flag. This lessens .text a
little, but most importantly this allows us to manipulate wq->list without
changine the meaning of is_single_threaded().
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/workqueue.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff -puN kernel/workqueue.c~workqueue-introduce-workqueue_struct-singlethread kernel/workqueue.c
--- a/kernel/workqueue.c~workqueue-introduce-workqueue_struct-singlethread
+++ a/kernel/workqueue.c
@@ -58,8 +58,9 @@ struct cpu_workqueue_struct {
*/
struct workqueue_struct {
struct cpu_workqueue_struct *cpu_wq;
+ struct list_head list;
const char *name;
- struct list_head list; /* Empty if single thread */
+ int singlethread;
int freezeable; /* Freeze threads during suspend */
};
@@ -76,7 +77,7 @@ static cpumask_t cpu_populated_map __rea
/* If it's single threaded, it isn't in the list of workqueues. */
static inline int is_single_threaded(struct workqueue_struct *wq)
{
- return list_empty(&wq->list);
+ return wq->singlethread;
}
static const cpumask_t *wq_cpu_map(struct workqueue_struct *wq)
@@ -401,7 +402,7 @@ static void flush_cpu_workqueue(struct c
void fastcall flush_workqueue(struct workqueue_struct *wq)
{
const cpumask_t *cpu_map = wq_cpu_map(wq);
- int cpu
+ int cpu;
might_sleep();
for_each_cpu_mask(cpu, *cpu_map)
@@ -694,10 +695,11 @@ struct workqueue_struct *__create_workqu
}
wq->name = name;
+ wq->singlethread = singlethread;
wq->freezeable = freezeable;
+ INIT_LIST_HEAD(&wq->list);
if (singlethread) {
- INIT_LIST_HEAD(&wq->list);
cwq = init_cpu_workqueue(wq, singlethread_cpu);
err = create_workqueue_thread(cwq, singlethread_cpu);
} else {
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
freezer-read-pf_borrowed_mm-in-a-nonracy-way.patch
freezer-close-theoretical-race-between-refrigerator-and-thaw_tasks.patch
freezer-remove-pf_nofreeze-from-rcutorture-thread.patch
freezer-remove-pf_nofreeze-from-bluetooth-threads.patch
freezer-add-try_to_freeze-calls-to-all-kernel-threads.patch
freezer-fix-vfork-problem.patch
freezer-take-kernel_execve-into-consideration.patch
nlmclnt_recovery-dont-use-clone_sighand.patch
fix-kthread_create-vs-freezer-theoretical-race.patch
fix-pf_nofreeze-and-freezeable-race-2.patch
freezer-document-task_lock-in-thaw_process.patch
move-frozen_process-to-kernel-power-processc.patch
separate-freezer-from-pm-code-rev-2.patch
introduce-freezer-flags-rev-2.patch
libata-core-convert-to-use-cancel_rearming_delayed_work.patch
clone-flag-clone_parent_tidptr-leaves-invalid-results-in-memory.patch
getrusage-fill-ru_inblock-and-ru_oublock-fields-if-possible.patch
dont-init-pgrp-and-__session-in-init_signals.patch
-
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