Module Name: src
Committed By: riastradh
Date: Sun Dec 19 12:26:13 UTC 2021
Modified Files:
src/sys/external/bsd/drm2/linux: linux_dma_resv.c
Log Message:
drm: Write comment for dma_resv_get_fences_rcu semantics.
To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/sys/external/bsd/drm2/linux/linux_dma_resv.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/linux/linux_dma_resv.c
diff -u src/sys/external/bsd/drm2/linux/linux_dma_resv.c:1.12 src/sys/external/bsd/drm2/linux/linux_dma_resv.c:1.13
--- src/sys/external/bsd/drm2/linux/linux_dma_resv.c:1.12 Sun Dec 19 12:26:04 2021
+++ src/sys/external/bsd/drm2/linux/linux_dma_resv.c Sun Dec 19 12:26:13 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: linux_dma_resv.c,v 1.12 2021/12/19 12:26:04 riastradh Exp $ */
+/* $NetBSD: linux_dma_resv.c,v 1.13 2021/12/19 12:26:13 riastradh Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_dma_resv.c,v 1.12 2021/12/19 12:26:04 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_dma_resv.c,v 1.13 2021/12/19 12:26:13 riastradh Exp $");
#include <sys/param.h>
#include <sys/poll.h>
@@ -741,6 +741,14 @@ dma_resv_get_excl_rcu(const struct dma_r
/*
* dma_resv_get_fences_rcu(robj, fencep, nsharedp, sharedp)
+ *
+ * Get a snapshot of the exclusive and shared fences of robj. The
+ * shared fences are returned as a pointer *sharedp to an array,
+ * to be freed by the caller with kfree, of *nsharedp elements.
+ *
+ * Returns zero on success, negative (Linux-style) error code on
+ * failure. On failure, *fencep, *nsharedp, and *sharedp are
+ * untouched.
*/
int
dma_resv_get_fences_rcu(const struct dma_resv *robj,
