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Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 900dcfee542c..6f584861d329 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -79,12 +79,16 @@ static void wakeup_softirqd(void)
/*
* If ksoftirqd is scheduled, we do not want to process pending softirqs
- * right now. Let ksoftirqd handle this at its own rate, to get fairness.
+ * right now. Let ksoftirqd handle this at its own rate, to get fairness,
+ * unless we're doing some of the synchronous softirqs.
*/
-static bool ksoftirqd_running(void)
+#define SOFTIRQ_NOW_MASK ((1 << HI_SOFTIRQ) | (1 << TASKLET_SOFTIRQ))
+static bool ksoftirqd_running(unsigned long pending)
{
struct task_struct *tsk = __this_cpu_read(ksoftirqd);
+ if (pending & SOFTIRQ_NOW_MASK)
+ return false;
return tsk && (tsk->state == TASK_RUNNING);
}
@@ -328,7 +332,7 @@ asmlinkage __visible void do_softirq(void)
pending = local_softirq_pending();
- if (pending && !ksoftirqd_running())
+ if (pending && !ksoftirqd_running(pending))
do_softirq_own_stack();
local_irq_restore(flags);
@@ -355,7 +359,7 @@ void irq_enter(void)
static inline void invoke_softirq(void)
{
- if (ksoftirqd_running())
+ if (ksoftirqd_running(local_softirq_pending()))
return;
if (!force_irqthreads) {
@@ -386,7 +390,7 @@ static inline void tick_irq_exit(void)
/* Make sure that timer wheel updates are propagated */
if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu)) {
- if (!in_interrupt())
+ if (!in_irq())
tick_nohz_irq_exit();
}
#endif