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| author |   Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com> | 2016-07-08 11:50:53 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-07-15 20:18:42 +1000 |
| commit | c0691f9dd2066087524d2b4498c0c9331f26dcd5 (patch) | |
| tree | 9e6118afab0c2abeffee5574480c98d9ee25f0f1 /arch/powerpc/platforms/powernv/smp.c | |
| parent | cpuidle/powernv: Add support for POWER ISA v3 idle states (diff) | |
| download | wireguard-linux-c0691f9dd2066087524d2b4498c0c9331f26dcd5.tar.xz wireguard-linux-c0691f9dd2066087524d2b4498c0c9331f26dcd5.zip | |
powerpc/powernv: Use deepest stop state when cpu is offlined
If hardware supports stop state, use the deepest stop state when
the cpu is offlined.
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/powernv/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/smp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index ad7b1a3dbed0..c789258ae1e1 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -182,7 +182,9 @@ static void pnv_smp_cpu_kill_self(void) ppc64_runlatch_off(); - if (idle_states & OPAL_PM_WINKLE_ENABLED) + if (cpu_has_feature(CPU_FTR_ARCH_300)) + srr1 = power9_idle_stop(pnv_deepest_stop_state); + else if (idle_states & OPAL_PM_WINKLE_ENABLED) srr1 = power7_winkle(); else if ((idle_states & OPAL_PM_SLEEP_ENABLED) || (idle_states & OPAL_PM_SLEEP_ENABLED_ER1)) |