diff options
| author | Richard Braun <rbraun@sceen.net> | 2013-05-24 00:03:20 +0200 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2013-05-24 00:03:20 +0200 |
| commit | 809082a3520480925def38e10272440ef68a455b (patch) | |
| tree | 24e7721d0fd72c0e313aa4b4ac413f2cf47137a5 /kern/llsync_i.h | |
| parent | b6b7c519edefe21b43e816f7e6d48fdb70f1eb8d (diff) | |
kern/llsync: improve concurrency
Keep a local copy of a processor registration state to avoid acquiring the
global lock when attempting to commit a checkpoint from an unregistered
processor.
Diffstat (limited to 'kern/llsync_i.h')
| -rw-r--r-- | kern/llsync_i.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kern/llsync_i.h b/kern/llsync_i.h index 89a7fe83..034e368b 100644 --- a/kern/llsync_i.h +++ b/kern/llsync_i.h @@ -21,12 +21,13 @@ #include <kern/param.h> /* - * Per-processor flag indicating if a processor checked in. + * Per-processor data. */ -struct llsync_cpu_checkpoint { +struct llsync_cpu { + int registered; int checked; } __aligned(CPU_L1_SIZE); -extern struct llsync_cpu_checkpoint llsync_cpu_checkpoints[MAX_CPUS]; +extern struct llsync_cpu llsync_cpus[MAX_CPUS]; #endif /* _KERN_LLSYNC_I_H */ |