diff options
| author | Anton Blanchard <anton@samba.org> | 2005-06-02 14:02:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-02 15:12:30 -0700 |
| commit | 6dc2f0c7df6cefda5932ac8bcd9ca5ef45de36ee (patch) | |
| tree | ce3f5ba4f99adfbc7adf4242d5bc76a8d0c3fd69 /arch/ppc64/kernel/idle.c | |
| parent | 79f1248962cfa1e11a5610e0349bc3515687516d (diff) | |
[PATCH] ppc64: cleanup iseries runlight support
The iseries has a bar graph on the front panel that shows how busy it is.
The operating system sets and clears a bit in the CTRL register to control
it.
Instead of going to the complexity of using a thread info bit, just set and
clear it in the idle loop.
Also create two helper functions, ppc64_runlatch_on and ppc64_runlatch_off.
Finally don't use the short form of the SPR defines.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc64/kernel/idle.c')
| -rw-r--r-- | arch/ppc64/kernel/idle.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/ppc64/kernel/idle.c b/arch/ppc64/kernel/idle.c index 6abc621d3ba0..f24ce2b87200 100644 --- a/arch/ppc64/kernel/idle.c +++ b/arch/ppc64/kernel/idle.c @@ -75,13 +75,9 @@ static int iSeries_idle(void) { struct paca_struct *lpaca; long oldval; - unsigned long CTRL; /* ensure iSeries run light will be out when idle */ - clear_thread_flag(TIF_RUN_LIGHT); - CTRL = mfspr(CTRLF); - CTRL &= ~RUNLATCH; - mtspr(CTRLT, CTRL); + ppc64_runlatch_off(); lpaca = get_paca(); @@ -111,7 +107,9 @@ static int iSeries_idle(void) } } + ppc64_runlatch_on(); schedule(); + ppc64_runlatch_off(); } return 0; |