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| author | Ingo Molnar <mingo@elte.hu> | 2011-04-21 11:39:21 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-04-21 11:39:28 +0200 |
| commit | 42ac9e87fdd89b77fa2ca0a5226023c1c2d83226 (patch) | |
| tree | dfdb1b720347a40f24a89a3e9c2727ae26ad5f01 /arch/blackfin/mach-common | |
| parent | 057f3fadb347e9c51b07e1b277bbdda79f976768 (diff) | |
| parent | f0e615c3cb72b42191b558c130409335812621d8 (diff) | |
Merge commit 'v2.6.39-rc4' into sched/core
Merge reason: Pick up upstream fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/blackfin/mach-common')
| -rw-r--r-- | arch/blackfin/mach-common/smp.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index 326bb86f4d2..1fbd94c4445 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -109,10 +109,23 @@ static void ipi_flush_icache(void *info) struct blackfin_flush_data *fdata = info; /* Invalidate the memory holding the bounds of the flushed region. */ - invalidate_dcache_range((unsigned long)fdata, - (unsigned long)fdata + sizeof(*fdata)); + blackfin_dcache_invalidate_range((unsigned long)fdata, + (unsigned long)fdata + sizeof(*fdata)); + + /* Make sure all write buffers in the data side of the core + * are flushed before trying to invalidate the icache. This + * needs to be after the data flush and before the icache + * flush so that the SSYNC does the right thing in preventing + * the instruction prefetcher from hitting things in cached + * memory at the wrong time -- it runs much further ahead than + * the pipeline. + */ + SSYNC(); - flush_icache_range(fdata->start, fdata->end); + /* ipi_flaush_icache is invoked by generic flush_icache_range, + * so call blackfin arch icache flush directly here. + */ + blackfin_icache_flush_range(fdata->start, fdata->end); } static void ipi_call_function(unsigned int cpu, struct ipi_message *msg) |