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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-07 11:36:54 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-13 16:26:01 -0400 |
| commit | bc1a298f4e04833db4c430df59b90039f0170515 (patch) | |
| tree | 802da739309efeab62317f62ec4f1989f3f7d8dd /arch/tile/mm | |
| parent | 1182b69cb24c4f7d7ee8c8afe41b5ab2bc05a15b (diff) | |
| download | blackbird-op-linux-bc1a298f4e04833db4c430df59b90039f0170515.tar.gz blackbird-op-linux-bc1a298f4e04833db4c430df59b90039f0170515.zip | |
tile: support CONFIG_PREEMPT
This change adds support for CONFIG_PREEMPT (full kernel preemption).
In addition to the core support, this change includes a number
of places where we fix up uses of smp_processor_id() and per-cpu
variables. I also eliminate the PAGE_HOME_HERE and PAGE_HOME_UNKNOWN
values for page homing, as it turns out they weren't being used.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/mm')
| -rw-r--r-- | arch/tile/mm/homecache.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/tile/mm/homecache.c b/arch/tile/mm/homecache.c index 1ae911939a18..df46a2d5bdf0 100644 --- a/arch/tile/mm/homecache.c +++ b/arch/tile/mm/homecache.c @@ -172,7 +172,8 @@ void flush_remote(unsigned long cache_pfn, unsigned long cache_control, static void homecache_finv_page_va(void* va, int home) { - if (home == smp_processor_id()) { + int cpu = get_cpu(); + if (home == cpu) { finv_buffer_local(va, PAGE_SIZE); } else if (home == PAGE_HOME_HASH) { finv_buffer_remote(va, PAGE_SIZE, 1); @@ -180,6 +181,7 @@ static void homecache_finv_page_va(void* va, int home) BUG_ON(home < 0 || home >= NR_CPUS); finv_buffer_remote(va, PAGE_SIZE, 0); } + put_cpu(); } void homecache_finv_map_page(struct page *page, int home) |
