summaryrefslogtreecommitdiff
path: root/Documentation/memory-barriers.txt
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2015-05-12 11:51:55 +0300
committerIngo Molnar <mingo@kernel.org>2015-05-19 09:32:00 +0300
commitb92b8b35a2e38bde319fd1d68ec84628c1f1b0fb (patch)
tree45aea6d12a580b60848363c10dc355f3307ec1ff /Documentation/memory-barriers.txt
parentab3f02fc237211f0583c1e7ba3bf504747be9b8d (diff)
downloadlinux-b92b8b35a2e38bde319fd1d68ec84628c1f1b0fb.tar.xz
locking/arch: Rename set_mb() to smp_store_mb()
Since set_mb() is really about an smp_mb() -- not a IO/DMA barrier like mb() rename it to match the recent smp_load_acquire() and smp_store_release(). Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/memory-barriers.txt')
-rw-r--r--Documentation/memory-barriers.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index f95746189b5d..fe4020e4b468 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -1662,7 +1662,7 @@ CPU from reordering them.
There are some more advanced barrier functions:
- (*) set_mb(var, value)
+ (*) smp_store_mb(var, value)
This assigns the value to the variable and then inserts a full memory
barrier after it, depending on the function. It isn't guaranteed to
@@ -1975,7 +1975,7 @@ after it has altered the task state:
CPU 1
===============================
set_current_state();
- set_mb();
+ smp_store_mb();
STORE current->state
<general barrier>
LOAD event_indicated
@@ -2016,7 +2016,7 @@ between the STORE to indicate the event and the STORE to set TASK_RUNNING:
CPU 1 CPU 2
=============================== ===============================
set_current_state(); STORE event_indicated
- set_mb(); wake_up();
+ smp_store_mb(); wake_up();
STORE current->state <write barrier>
<general barrier> STORE current->state
LOAD event_indicated