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| author |  Rodrigo Vivi <rodrigo.vivi@intel.com>
| 2019-07-29 08:51:48 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com>
| 2019-07-29 08:51:48 -0700 |
| commit | ed32f8d42cee118b075e4372a55c7739a11094b2 (patch) | |
| tree | 5a806c5168d4177e0536b98b6bda30ec4bdbac43 /Documentation/RCU/whatisRCU.txt | |
| parent | drm/i915: Flush the i915_vm_release before ggtt shutdown (diff) | |
| parent | Linus 5.3-rc1 (diff) | |
| download | linux-ed32f8d42cee118b075e4372a55c7739a11094b2.tar.gz linux-ed32f8d42cee118b075e4372a55c7739a11094b2.tar.bz2 linux-ed32f8d42cee118b075e4372a55c7739a11094b2.zip | |
Merge drm/drm-next into drm-intel-next-queued
Catching up with 5.3-rc*
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'Documentation/RCU/whatisRCU.txt')
| -rw-r--r-- | Documentation/RCU/whatisRCU.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/RCU/whatisRCU.txt b/Documentation/RCU/whatisRCU.txt index 981651a8b65d..7e1a8721637a 100644 --- a/Documentation/RCU/whatisRCU.txt +++ b/Documentation/RCU/whatisRCU.txt @@ -212,7 +212,7 @@ synchronize_rcu() rcu_assign_pointer() - typeof(p) rcu_assign_pointer(p, typeof(p) v); + void rcu_assign_pointer(p, typeof(p) v); Yes, rcu_assign_pointer() -is- implemented as a macro, though it would be cool to be able to declare a function in this manner. @@ -220,9 +220,9 @@ rcu_assign_pointer() The updater uses this function to assign a new value to an RCU-protected pointer, in order to safely communicate the change - in value from the updater to the reader. This function returns - the new value, and also executes any memory-barrier instructions - required for a given CPU architecture. + in value from the updater to the reader. This macro does not + evaluate to an rvalue, but it does execute any memory-barrier + instructions required for a given CPU architecture. Perhaps just as important, it serves to document (1) which pointers are protected by RCU and (2) the point at which a |