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| author | Jeff Garzik <jeff@garzik.org> | 2006-02-27 11:49:05 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-02-27 11:49:05 -0500 |
| commit | cccc65a3b60edaf721cdee5a14f68ba009341822 (patch) | |
| tree | a458d28f70cbe0e848596aad6005442a2621d388 /arch/powerpc/kernel/process.c | |
| parent | ba70d0614728892b86b2be2f7eae0c696b436461 (diff) | |
| parent | e95a9ec1bb66e07b138861c743192f06e7b3e4de (diff) | |
Merge branch 'master'
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 57703994a063..c225cf154bfe 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -888,3 +888,35 @@ void dump_stack(void) show_stack(current, NULL); } EXPORT_SYMBOL(dump_stack); + +#ifdef CONFIG_PPC64 +void ppc64_runlatch_on(void) +{ + unsigned long ctrl; + + if (cpu_has_feature(CPU_FTR_CTRL) && !test_thread_flag(TIF_RUNLATCH)) { + HMT_medium(); + + ctrl = mfspr(SPRN_CTRLF); + ctrl |= CTRL_RUNLATCH; + mtspr(SPRN_CTRLT, ctrl); + + set_thread_flag(TIF_RUNLATCH); + } +} + +void ppc64_runlatch_off(void) +{ + unsigned long ctrl; + + if (cpu_has_feature(CPU_FTR_CTRL) && test_thread_flag(TIF_RUNLATCH)) { + HMT_medium(); + + clear_thread_flag(TIF_RUNLATCH); + + ctrl = mfspr(SPRN_CTRLF); + ctrl &= ~CTRL_RUNLATCH; + mtspr(SPRN_CTRLT, ctrl); + } +} +#endif |