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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-23 20:38:50 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-23 20:38:50 -0800 |
| commit | adb9c9ac2e82ddbae4f635a9488ea4ee0a88feb6 (patch) | |
| tree | 0c43684d343e6e59015b402ff7c73e2e6b9ef3dd /arch/powerpc/kernel/process.c | |
| parent | a80614d1adba903a1e5cb22bf14ebc640fc2ba4c (diff) | |
| parent | fb5c594c2acc441f0d2d8f457484a0e0e9285db3 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/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 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 |