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authorPeter Zijlstra <peterz@infradead.org>2020-06-15 11:51:29 +0200
committerPeter Zijlstra <peterz@infradead.org>2020-11-24 16:47:48 +0100
commit7a9f50a05843fee8366bd3a65addbebaa7cf7f07 (patch)
treeaaaf1949ef4772b9d6602207c2dd6b92936591dc /kernel/irq_work.c
parent23e6082a522e32232f7377540b4d42d8304253b8 (diff)
irq_work: Cleanup
Get rid of the __call_single_node union and clean up the API a little to avoid external code relying on the structure layout as much. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Diffstat (limited to 'kernel/irq_work.c')
-rw-r--r--kernel/irq_work.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index eca83965b631..fbff25adb574 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -31,7 +31,7 @@ static bool irq_work_claim(struct irq_work *work)
{
int oflags;
- oflags = atomic_fetch_or(IRQ_WORK_CLAIMED | CSD_TYPE_IRQ_WORK, &work->flags);
+ oflags = atomic_fetch_or(IRQ_WORK_CLAIMED | CSD_TYPE_IRQ_WORK, &work->node.a_flags);
/*
* If the work is already pending, no need to raise the IPI.
* The pairing atomic_fetch_andnot() in irq_work_run() makes sure
@@ -53,12 +53,12 @@ void __weak arch_irq_work_raise(void)
static void __irq_work_queue_local(struct irq_work *work)
{
/* If the work is "lazy", handle it from next tick if any */
- if (atomic_read(&work->flags) & IRQ_WORK_LAZY) {
- if (llist_add(&work->llnode, this_cpu_ptr(&lazy_list)) &&
+ if (atomic_read(&work->node.a_flags) & IRQ_WORK_LAZY) {
+ if (llist_add(&work->node.llist, this_cpu_ptr(&lazy_list)) &&
tick_nohz_tick_stopped())
arch_irq_work_raise();
} else {
- if (llist_add(&work->llnode, this_cpu_ptr(&raised_list)))
+ if (llist_add(&work->node.llist, this_cpu_ptr(&raised_list)))
arch_irq_work_raise();
}
}
@@ -102,7 +102,7 @@ bool irq_work_queue_on(struct irq_work *work, int cpu)
if (cpu != smp_processor_id()) {
/* Arch remote IPI send/receive backend aren't NMI safe */
WARN_ON_ONCE(in_nmi());
- __smp_call_single_queue(cpu, &work->llnode);
+ __smp_call_single_queue(cpu, &work->node.llist);
} else {
__irq_work_queue_local(work);
}
@@ -142,7 +142,7 @@ void irq_work_single(void *arg)
* to claim that work don't rely on us to handle their data
* while we are in the middle of the func.
*/
- flags = atomic_fetch_andnot(IRQ_WORK_PENDING, &work->flags);
+ flags = atomic_fetch_andnot(IRQ_WORK_PENDING, &work->node.a_flags);
lockdep_irq_work_enter(work);
work->func(work);
@@ -152,7 +152,7 @@ void irq_work_single(void *arg)
* no-one else claimed it meanwhile.
*/
flags &= ~IRQ_WORK_PENDING;
- (void)atomic_cmpxchg(&work->flags, flags, flags & ~IRQ_WORK_BUSY);
+ (void)atomic_cmpxchg(&work->node.a_flags, flags, flags & ~IRQ_WORK_BUSY);
}
static void irq_work_run_list(struct llist_head *list)
@@ -166,7 +166,7 @@ static void irq_work_run_list(struct llist_head *list)
return;
llnode = llist_del_all(list);
- llist_for_each_entry_safe(work, tmp, llnode, llnode)
+ llist_for_each_entry_safe(work, tmp, llnode, node.llist)
irq_work_single(work);
}
@@ -198,7 +198,7 @@ void irq_work_sync(struct irq_work *work)
{
lockdep_assert_irqs_enabled();
- while (atomic_read(&work->flags) & IRQ_WORK_BUSY)
+ while (irq_work_is_busy(work))
cpu_relax();
}
EXPORT_SYMBOL_GPL(irq_work_sync);