diff options
| author | Paul Mackerras <paulus@samba.org> | 2006-02-24 14:05:47 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-02-24 14:05:47 +1100 |
| commit | a00428f5b149e36b8225b2a0812742a6dfb07b8c (patch) | |
| tree | a78869cd67cf78a0eb091fb0ea5d397734bd6738 /arch/powerpc/kernel/process.c | |
| parent | 774fee58c465ea1c7e9775e347ec307bcf2deeb3 (diff) | |
| parent | fb5c594c2acc441f0d2d8f457484a0e0e9285db3 (diff) | |
Merge ../powerpc-merge
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 1201880cab40..dd774c3c9302 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -886,3 +886,35 @@ 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 |