[patch V5 23/38] genirq: Provde __irq_enter/exit_raw()

Thomas Gleixner
2020-05-12T22:23:44Z

include/linux/hardirq.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

--- a/include/linux/hardirq.h
+++ b/include/linux/hardirq.h
@@ -41,6 +41,17 @@ extern void rcu_nmi_exit(void);
} while (0)

/*
+ * Like __irq_enter() without time accounting for fast
+ * interrupts, e.g. reschedule IPI where time accounting
+ * is more expensive than the actual interrupt.
+ */
+#define __irq_enter_raw() \
+ do { \
+ preempt_count_add(HARDIRQ_OFFSET); \
+ lockdep_hardirq_enter(); \
+ } while (0)
+
+/*
* Enter irq context (on NO_HZ, update jiffies):
*/
void irq_enter(void);
@@ -59,6 +70,15 @@ void irq_enter_rcu(void);
preempt_count_sub(HARDIRQ_OFFSET); \
} while (0)

+/*
+ * Like __irq_exit() without time accounting
+ */
+#define __irq_exit_raw() \
+ do { \
+ lockdep_hardirq_exit(); \
+ preempt_count_sub(HARDIRQ_OFFSET); \
+ } while (0)
+
/*
* Exit irq context and process softirqs if needed:
*/