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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-22 17:53:02 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-22 17:53:02 -0500 |
| commit | ef0e1ea8856bed6ff8394d3dfe77f2cab487ecea (patch) | |
| tree | 0656919ad706e48bf4611c543491913ef0fa920d /arch/arc/mm/cache.c | |
| parent | 37c669b237499cc4b8279466a83bcafed1ca2829 (diff) | |
| parent | c57653dc94d0db7bf63067433ceaa97bdcd0a312 (diff) | |
Merge tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- support for Syscall ABI v4 with upstream gcc 6.x
- lockdep fix (Daniel Mentz)
- gdb register clobber (Liav Rehana)
- couple of missing exports for modules
- other fixes here and there
* tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: export __udivdi3 for modules
ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
ARC: export kmap
ARC: Support syscall ABI v4
ARC: use correct offset in pt_regs for saving/restoring user mode r25
ARC: Elide redundant setup of DMA callbacks
ARC: Call trace_hardirqs_on() before enabling irqs
Diffstat (limited to 'arch/arc/mm/cache.c')
| -rw-r--r-- | arch/arc/mm/cache.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c index 5a294b2c3cb3..0b10efe3a6a7 100644 --- a/arch/arc/mm/cache.c +++ b/arch/arc/mm/cache.c @@ -921,6 +921,15 @@ void arc_cache_init(void) printk(arc_cache_mumbojumbo(0, str, sizeof(str))); + /* + * Only master CPU needs to execute rest of function: + * - Assume SMP so all cores will have same cache config so + * any geomtry checks will be same for all + * - IOC setup / dma callbacks only need to be setup once + */ + if (cpu) + return; + if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) { struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache; |