From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
"Gautham R . Shenoy" <ego@linux.vnet.ibm.com>,
"Shreyas B . Prabhu" <shreyas@linux.vnet.ibm.com>
Subject: [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0
Date: Mon, 12 Jun 2017 09:58:35 +1000 [thread overview]
Message-ID: <20170611235835.7400-15-npiggin@gmail.com> (raw)
In-Reply-To: <20170611235835.7400-1-npiggin@gmail.com>
2*mfmsr and 2*mtmsr can be avoided in the idle sleep/wake code
because we know the MSR[EE] is clear.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/platforms/powernv/idle.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index ee416e016387..84c55a5ef7ea 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -291,9 +291,9 @@ static unsigned long __power7_idle_type(unsigned long type)
if (!prep_irq_for_idle_irqsoff())
return 0;
- ppc64_runlatch_off();
+ __ppc64_runlatch_off();
srr1 = power7_idle_insn(type);
- ppc64_runlatch_on();
+ __ppc64_runlatch_on();
fini_irq_for_idle_irqsoff();
@@ -328,9 +328,9 @@ static unsigned long __power9_idle_type(unsigned long stop_psscr_val,
psscr = mfspr(SPRN_PSSCR);
psscr = (psscr & ~stop_psscr_mask) | stop_psscr_val;
- ppc64_runlatch_off();
+ __ppc64_runlatch_off();
srr1 = power9_idle_stop(psscr);
- ppc64_runlatch_on();
+ __ppc64_runlatch_on();
fini_irq_for_idle_irqsoff();
@@ -365,7 +365,7 @@ unsigned long pnv_cpu_offline(unsigned int cpu)
unsigned long srr1;
u32 idle_states = pnv_get_supported_cpuidle_states();
- ppc64_runlatch_off();
+ __ppc64_runlatch_off();
if (cpu_has_feature(CPU_FTR_ARCH_300) && deepest_stop_found) {
unsigned long psscr;
@@ -392,7 +392,7 @@ unsigned long pnv_cpu_offline(unsigned int cpu)
HMT_medium();
}
- ppc64_runlatch_on();
+ __ppc64_runlatch_on();
return srr1;
}
--
2.11.0
next prev parent reply other threads:[~2017-06-12 0:00 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-11 23:58 [PATCH 00/14 v2] idle performance improvements Nicholas Piggin
2017-06-11 23:58 ` [PATCH 01/14] powerpc/64s: idle move soft interrupt mask logic into C code Nicholas Piggin
2017-06-12 8:37 ` Gautham R Shenoy
2017-06-12 14:46 ` Nicholas Piggin
2017-06-13 4:28 ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 02/14] powerpc/64s: idle hotplug lazy-irq simplification Nicholas Piggin
2017-06-11 23:58 ` [PATCH 03/14] powerpc/64s: idle provide a default idle for POWER9 Nicholas Piggin
2017-06-12 8:53 ` Gautham R Shenoy
2017-06-12 14:46 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 04/14] powerpc/64s: idle process interrupts from system reset wakeup Nicholas Piggin
2017-06-12 9:41 ` Gautham R Shenoy
2017-06-12 14:51 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 05/14] powerpc/64s: msgclr when handling doorbell exceptions Nicholas Piggin
2017-06-12 14:38 ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 06/14] powerpc/64s: interrupt replay balance the return branch predictor Nicholas Piggin
2017-06-12 14:41 ` Gautham R Shenoy
2017-06-13 9:51 ` Michael Ellerman
2017-06-13 11:09 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 07/14] powerpc/64s: idle branch to handler with virtual mode offset Nicholas Piggin
2017-06-11 23:58 ` [PATCH 08/14] powerpc/64s: idle avoid SRR usage in idle sleep/wake paths Nicholas Piggin
2017-06-13 10:25 ` Gautham R Shenoy
2017-06-13 10:45 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 09/14] powerpc/64s: idle hmi wakeup is unlikely Nicholas Piggin
2017-06-12 15:03 ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 10/14] powerpc/64s: cpuidle set polling before enabling irqs Nicholas Piggin
2017-06-12 15:10 ` Gautham R Shenoy
2017-06-12 15:20 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals Nicholas Piggin
2017-06-12 15:30 ` Gautham R Shenoy
2017-06-12 17:50 ` Vaidyanathan Srinivasan
2017-06-11 23:58 ` [PATCH 12/14] powerpc/64s: cpuidle no memory barrier after break from idle Nicholas Piggin
2017-06-12 17:48 ` Vaidyanathan Srinivasan
2017-06-13 12:47 ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 13/14] powerpc/64: runlatch CTRL[RUN] set optimisation Nicholas Piggin
2017-06-12 17:11 ` Vaidyanathan Srinivasan
2017-06-13 10:04 ` Michael Ellerman
2017-06-13 11:56 ` Nicholas Piggin
2017-06-13 13:45 ` Benjamin Herrenschmidt
2017-06-14 3:34 ` Michael Ellerman
2017-06-11 23:58 ` Nicholas Piggin [this message]
2017-06-12 17:00 ` [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Vaidyanathan Srinivasan
-- strict thread matches above, loose matches on Subject: below --
2017-06-08 15:50 [PATCH 00/14] idle performance improvements Nicholas Piggin
2017-06-08 15:51 ` [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Nicholas Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170611235835.7400-15-npiggin@gmail.com \
--to=npiggin@gmail.com \
--cc=ego@linux.vnet.ibm.com \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=shreyas@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).