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From: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Cc: npiggin@gmail.com, mpe@ellerman.id.au, ego@linux.vnet.ibm.com,
	Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Subject: [PATCH] cpuidle/powernv : init all present cpus for deep states
Date: Wed, 16 May 2018 17:32:14 +0530	[thread overview]
Message-ID: <1526472134-23757-1-git-send-email-akshay.adiga@linux.vnet.ibm.com> (raw)

Init all present cpus for deep states instead of "all possible" cpus.
Init fails if the possible cpu is gaurded. Resulting in making only
non-deep states available for cpuidle/hotplug.

Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/powernv/idle.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index 1f12ab1..1c5d067 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -79,7 +79,7 @@ static int pnv_save_sprs_for_deep_states(void)
 	uint64_t msr_val = MSR_IDLE;
 	uint64_t psscr_val = pnv_deepest_stop_psscr_val;
 
-	for_each_possible_cpu(cpu) {
+	for_each_present_cpu(cpu) {
 		uint64_t pir = get_hard_smp_processor_id(cpu);
 		uint64_t hsprg0_val = (uint64_t)paca_ptrs[cpu];
 
@@ -814,7 +814,7 @@ static int __init pnv_init_idle_states(void)
 		int cpu;
 
 		pr_info("powernv: idle: Saving PACA pointers of all CPUs in their thread sibling PACA\n");
-		for_each_possible_cpu(cpu) {
+		for_each_present_cpu(cpu) {
 			int base_cpu = cpu_first_thread_sibling(cpu);
 			int idx = cpu_thread_in_core(cpu);
 			int i;
-- 
2.5.5

             reply	other threads:[~2018-05-16 12:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-16 12:02 Akshay Adiga [this message]
2018-05-16 15:22 ` [PATCH] cpuidle/powernv : init all present cpus for deep states Stewart Smith
2018-05-17  5:55   ` Akshay Adiga
2018-05-25 10:52     ` Michael Ellerman
2018-05-24  6:53 ` Akshay Adiga
2018-05-25 10:50 ` Michael Ellerman
2018-05-28  0:46   ` Stewart Smith
2018-06-01 15:54 ` Michael Ellerman

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