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| author | Steve French <sfrench@us.ibm.com> | 2006-03-03 11:27:25 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2006-03-03 11:27:25 +0000 |
| commit | c6ee60b7c8bbc78e3b1776b2820a7e7f95f8996a (patch) | |
| tree | 99b48ef0f5217fddc0aa897d9e60d95ace7da6ff /arch/powerpc/kernel/process.c | |
| parent | 13298defe5323c7fdcac268f588d8d1090758fb8 (diff) | |
| parent | c499ec24c31edf270e777a868ffd0daddcfe7ebd (diff) | |
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Signed-off-by: Steve French <sfrench@us.ibm.com>
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 57703994a06..c225cf154bf 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 |