Commit-ID: bf8c6d963d16d40fbe70e94b61d9bf18c455fc6b Gitweb: https://git.kernel.org/tip/bf8c6d963d16d40fbe70e94b61d9bf18c455fc6b Author: Andrea Parri <[email protected]> AuthorDate: Mon, 14 May 2018 16:33:45 -0700 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 15 May 2018 08:11:16 +0200
tools/memory-model: Model 'smp_store_mb()' This commit models 'smp_store_mb(x, val);' to be semantically equivalent to 'WRITE_ONCE(x, val); smp_mb();'. Suggested-by: Paolo Bonzini <[email protected]> Suggested-by: Peter Zijlstra <[email protected]> Signed-off-by: Andrea Parri <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> Acked-by: Alan Stern <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- tools/memory-model/linux-kernel.def | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/memory-model/linux-kernel.def b/tools/memory-model/linux-kernel.def index 397e4e67e8c8..acf86f6f360a 100644 --- a/tools/memory-model/linux-kernel.def +++ b/tools/memory-model/linux-kernel.def @@ -14,6 +14,7 @@ smp_store_release(X,V) { __store{release}(*X,V); } smp_load_acquire(X) __load{acquire}(*X) rcu_assign_pointer(X,V) { __store{release}(X,V); } rcu_dereference(X) __load{once}(X) +smp_store_mb(X,V) { __store{once}(X,V); __fence{mb}; } // Fences smp_mb() { __fence{mb} ; }
