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| author | Kumar Gala <galak@kernel.crashing.org> | 2008-07-15 16:12:25 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-09-24 16:29:40 -0500 |
| commit | 0ba3418b8b1c85ee1771c63f1dd12041614e56ff (patch) | |
| tree | 6f77bf668e76725710aae5126054eebd5913d319 /arch/powerpc/kernel/ppc_ksyms.c | |
| parent | 1afb7f809bfb8fad9eec9419f3dfd75cee746ebd (diff) | |
| download | linux-0ba3418b8b1c85ee1771c63f1dd12041614e56ff.tar.bz2 | |
powerpc: Introduce local (non-broadcast) forms of tlb invalidates
Introduced a new set of low level tlb invalidate functions that do not
broadcast invalidates on the bus:
_tlbil_all - invalidate all
_tlbil_pid - invalidate based on process id (or mm context)
_tlbil_va - invalidate based on virtual address (ea + pid)
On non-SMP configs _tlbil_all should be functionally equivalent to _tlbia and
_tlbil_va should be functionally equivalent to _tlbie.
The intent of this change is to handle SMP based invalidates via IPIs instead
of broadcasts as the mechanism scales better for larger number of cores.
On e500 (fsl-booke mmu) based cores move to using MMUCSR for invalidate alls
and tlbsx/tlbwe for invalidate virtual address.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/ppc_ksyms.c')
| -rw-r--r-- | arch/powerpc/kernel/ppc_ksyms.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index e1ea4fe5cfbd..8edc2359c419 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -119,6 +119,9 @@ EXPORT_SYMBOL(flush_instruction_cache); EXPORT_SYMBOL(flush_tlb_kernel_range); EXPORT_SYMBOL(flush_tlb_page); EXPORT_SYMBOL(_tlbie); +#if defined(CONFIG_4xx) || defined(CONFIG_8xx) || defined(CONFIG_FSL_BOOKE) +EXPORT_SYMBOL(_tlbil_va); +#endif #endif EXPORT_SYMBOL(__flush_icache_range); EXPORT_SYMBOL(flush_dcache_range); |