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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 13:49:39 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 13:49:39 +0100 |
| commit | 220d0b1dbf78c6417a658c96e571415552d3abac (patch) | |
| tree | 70cd3862540c38ea490e7a27c3c7acc35b680234 /arch/mips/mti-malta/malta-amon.c | |
| parent | 474b18ccc264c472abeec50f48469b6477202699 (diff) | |
| parent | 22763c5cf3690a681551162c15d34d935308c8d7 (diff) | |
Merge branch 'master' into for-2.6.33
Diffstat (limited to 'arch/mips/mti-malta/malta-amon.c')
| -rw-r--r-- | arch/mips/mti-malta/malta-amon.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/mips/mti-malta/malta-amon.c b/arch/mips/mti-malta/malta-amon.c index df9e526312a..469d9b0cee6 100644 --- a/arch/mips/mti-malta/malta-amon.c +++ b/arch/mips/mti-malta/malta-amon.c @@ -70,11 +70,12 @@ void amon_cpu_start(int cpu, launch->sp = sp; launch->a0 = a0; - /* Make sure target sees parameters before the go bit */ - smp_mb(); - + smp_wmb(); /* Target must see parameters before go */ launch->flags |= LAUNCH_FGO; + smp_wmb(); /* Target must see go before we poll */ + while ((launch->flags & LAUNCH_FGONE) == 0) ; + smp_rmb(); /* Target will be updating flags soon */ pr_debug("launch: cpu%d gone!\n", cpu); } |