diff options
| author | Richard Braun <rbraun@sceen.net> | 2019-08-16 20:02:37 +0200 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2019-08-16 20:30:48 +0200 |
| commit | 84d47c358b1d07b9155474d7075e082c52147ebc (patch) | |
| tree | 0a97fbcfe7f56637e18afc9e1ba4cefa3cea1aa5 /kern/thread.c | |
| parent | 27dbd3b2fdafd6e12bdef5f653532b2ca752a6f9 (diff) | |
Replace some barrier()s with local atomic fences
Diffstat (limited to 'kern/thread.c')
| -rw-r--r-- | kern/thread.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kern/thread.c b/kern/thread.c index 71943c04..0bad0752 100644 --- a/kern/thread.c +++ b/kern/thread.c @@ -96,6 +96,7 @@ #include <kern/cpumap.h> #include <kern/init.h> #include <kern/kmem.h> +#include <kern/latomic.h> #include <kern/list.h> #include <kern/macros.h> #include <kern/panic.h> @@ -674,7 +675,9 @@ thread_runq_schedule(struct thread_runq *runq) * and locking the run queue again is equivalent to a full memory * barrier. */ + latomic_fence(LATOMIC_ACQ_REL); tcb_switch(&prev->tcb, &next->tcb); + latomic_fence(LATOMIC_ACQ_REL); /* * The thread is dispatched on a processor once again. @@ -685,7 +688,6 @@ thread_runq_schedule(struct thread_runq *runq) * referenced any more. * - The current thread may have been migrated to another processor. */ - barrier(); thread_runq_schedule_load(prev); next = NULL; |