Changeset bea6233 in mainline for kernel/arch/arm64/include/arch/asm.h

Timestamp:

2023-02-26T15:27:13Z (14 months ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7cf5ddb

Parents:

deed510

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-26 15:18:02)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-26 15:27:13)

Message:

Replace cpu_sleep() with cpu_interruptible_sleep()

The new function combines interrupt reenabling with sleep,
so that a platform can implement this sequence atomically.
This is currently done only on ia32 and amd64.

File:

• kernel/arch/arm64/include/arch/asm.h (modified) (1 diff)

kernel/arch/arm64/include/arch/asm.h

@@ -52 +52 @@
 {
         asm volatile ("wfe");
+}
+
+/** Enables interrupts and blocks until an interrupt arrives,
+ * atomically if possible on target architecture.
+ * Disables interrupts again before returning to caller.
+ */
+_NO_TRACE static inline void cpu_interruptible_sleep(void)
+{
+        // FIXME: do this atomically
+        interrupts_enable();
+        cpu_sleep();
+        interrupts_disable();
 }