summaryrefslogtreecommitdiff
path: root/include/linux/workqueue.h
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2013-03-12 11:30:00 -0700
committerTejun Heo <tj@kernel.org>2013-03-12 11:30:00 -0700
commit7a4e344c5675eefbde93ed9a98ef45e0e4957bc2 (patch)
tree7a4383063512328184db9d20e27164824c44dc2c /include/linux/workqueue.h
parent4e1a1f9a051b4c9a2821a2a0f7f4a27c701fba51 (diff)
workqueue: introduce workqueue_attrs
Introduce struct workqueue_attrs which carries worker attributes - currently the nice level and allowed cpumask along with helper routines alloc_workqueue_attrs() and free_workqueue_attrs(). Each worker_pool now carries ->attrs describing the attributes of its workers. All functions dealing with cpumask and nice level of workers are updated to follow worker_pool->attrs instead of determining them from other characteristics of the worker_pool, and init_workqueues() is updated to set worker_pool->attrs appropriately for all standard pools. Note that create_worker() is updated to always perform set_user_nice() and use set_cpus_allowed_ptr() combined with manual assertion of PF_THREAD_BOUND instead of kthread_bind(). This simplifies handling random attributes without affecting the outcome. This patch doesn't introduce any behavior changes. v2: Missing cpumask_var_t definition caused build failure on some archs. linux/cpumask.h included. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: kbuild test robot <fengguang.wu@intel.com> Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Diffstat (limited to 'include/linux/workqueue.h')
-rw-r--r--include/linux/workqueue.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 899be6636d20..00c1b9ba8252 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -11,6 +11,7 @@
#include <linux/lockdep.h>
#include <linux/threads.h>
#include <linux/atomic.h>
+#include <linux/cpumask.h>
struct workqueue_struct;
@@ -115,6 +116,15 @@ struct delayed_work {
int cpu;
};
+/*
+ * A struct for workqueue attributes. This can be used to change
+ * attributes of an unbound workqueue.
+ */
+struct workqueue_attrs {
+ int nice; /* nice level */
+ cpumask_var_t cpumask; /* allowed CPUs */
+};
+
static inline struct delayed_work *to_delayed_work(struct work_struct *work)
{
return container_of(work, struct delayed_work, work);
@@ -399,6 +409,9 @@ __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active,
extern void destroy_workqueue(struct workqueue_struct *wq);
+struct workqueue_attrs *alloc_workqueue_attrs(gfp_t gfp_mask);
+void free_workqueue_attrs(struct workqueue_attrs *attrs);
+
extern bool queue_work_on(int cpu, struct workqueue_struct *wq,
struct work_struct *work);
extern bool queue_work(struct workqueue_struct *wq, struct work_struct *work);