diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2015-10-09 08:42:44 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2015-10-09 08:52:35 +0300 |
| commit | fdb8b20906f3546ba6c2f9f0686d8a5189516ba3 (patch) | |
| tree | 6bb43dc8a42d6e9403763bc749f706939dd2bc60 /kernel/arch/mips/mm/c-r4k.c | |
| parent | cc84a1f21026270463b580f2564f9d71912b20db (diff) | |
Kernel bump from 4.1.3-rt to 4.1.7-rt.
These changes brings a vanilla kernel from kernel.org, and the patch
applied for rt is patch-4.1.7-rt8.patch. No further changes needed.
Change-Id: Id8dd03c2ddd971e4d1d69b905f3069737053b700
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/mips/mm/c-r4k.c')
| -rw-r--r-- | kernel/arch/mips/mm/c-r4k.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/kernel/arch/mips/mm/c-r4k.c b/kernel/arch/mips/mm/c-r4k.c index 2e03ab173..dca0efc07 100644 --- a/kernel/arch/mips/mm/c-r4k.c +++ b/kernel/arch/mips/mm/c-r4k.c @@ -37,6 +37,7 @@ #include <asm/cacheflush.h> /* for run_uncached() */ #include <asm/traps.h> #include <asm/dma-coherence.h> +#include <asm/mips-cm.h> /* * Special Variant of smp_call_function for use by cache functions: @@ -51,9 +52,16 @@ static inline void r4k_on_each_cpu(void (*func) (void *info), void *info) { preempt_disable(); -#ifndef CONFIG_MIPS_MT_SMP - smp_call_function(func, info, 1); -#endif + /* + * The Coherent Manager propagates address-based cache ops to other + * cores but not index-based ops. However, r4k_on_each_cpu is used + * in both cases so there is no easy way to tell what kind of op is + * executed to the other cores. The best we can probably do is + * to restrict that call when a CM is not present because both + * CM-based SMP protocols (CMP & CPS) restrict index-based cache ops. + */ + if (!mips_cm_present()) + smp_call_function_many(&cpu_foreign_map, func, info, 1); func(info); preempt_enable(); } |