git: 78c7537d5636 - stable/13 - linuxkpi: Define `synchronize_hardirq()`
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Date: Thu, 16 Feb 2023 11:55:41 UTC
The branch stable/13 has been updated by dumbbell (ports committer):
URL: https://cgit.FreeBSD.org/src/commit/?id=78c7537d56362d7db2fe2ec9f27faf331e88a20b
commit 78c7537d56362d7db2fe2ec9f27faf331e88a20b
Author: Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
AuthorDate: 2023-01-11 00:27:40 +0000
Commit: Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
CommitDate: 2023-02-16 11:55:11 +0000
linuxkpi: Define `synchronize_hardirq()`
It currently does the same as `synchronize_irq()`.
Reviewed by: manu
Approved by: manu
Differential Revision: https://reviews.freebsd.org/D38079
(cherry picked from commit a609ed795943673074b71aeafafabe46d08f1a6d)
---
sys/compat/linuxkpi/common/include/linux/hardirq.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/sys/compat/linuxkpi/common/include/linux/hardirq.h b/sys/compat/linuxkpi/common/include/linux/hardirq.h
index 07f00f076860..9e7baec1b213 100644
--- a/sys/compat/linuxkpi/common/include/linux/hardirq.h
+++ b/sys/compat/linuxkpi/common/include/linux/hardirq.h
@@ -40,4 +40,14 @@
#define synchronize_irq(irq) _intr_drain((irq))
+/*
+ * FIXME: In the i915 driver's `intel_engine_cs.c` file,
+ * `synchronize_hardirq()` was replaced by `synchronize_rcu()` with the
+ * following comment:
+ * "Is it enough to wait that all cpu have context-switched?"
+ *
+ * See commit f6d50b7af554e21c380486d6f41c8537b265c777 in drm-kmod.
+ */
+#define synchronize_hardirq(irq) _intr_drain((irq))
+
#endif /* _LINUXKPI_LINUX_HARDIRQ_H_ */