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 00/14] idle performance improvements
Date: Fri, 9 Jun 2017 01:50:59 +1000 [thread overview]
Message-ID: <20170608155113.21300-1-npiggin@gmail.com> (raw)
These patches improve performance of idle sleep and wake. The
first patches rework the lazy-irq handling of idle code a bit
to make it simpler first.
Any review would be welcome. I've tested this with some
performance and simple correctness tests on POWER8, POWER9,
and with KVM on POWER8, so it's about ready to review now
I hope.
Thanks,
Nick
Nicholas Piggin (14):
powerpc/64s: idle move soft interrupt mask logic into C code
powerpc/64s: idle hotplug lazy-irq simplification
powerpc/64s: idle provide a default idle for POWER9
powerpc/64s: idle process interrupts from system reset wakeup
powerpc/64s: msgclr when handling doorbell exceptions
powerpc/64s: interrupt replay balance the return branch predictor
powerpc/64s: idle branch to handler with virtual mode offset
powerpc/64s: idle avoid SRR usage in idle sleep/wake paths
powerpc/64s: idle hmi wakeup is unlikely
powerpc/64s: cpuidle set polling before enabling irqs
powerpc/64s: cpuidle read mostly for common globals
powerpc/64s: cpuidle no memory barrier after break from idle
powerpc/64: runlatch CTRL[RUN] set optimisation
powerpc/64s: idle runlatch switch is done with MSR[EE]=0
arch/powerpc/include/asm/dbell.h | 13 +++
arch/powerpc/include/asm/exception-64s.h | 17 +++-
arch/powerpc/include/asm/hw_irq.h | 1 +
arch/powerpc/include/asm/machdep.h | 1 +
arch/powerpc/include/asm/ppc-opcode.h | 3 +
arch/powerpc/include/asm/processor.h | 10 +--
arch/powerpc/kernel/asm-offsets.c | 1 +
arch/powerpc/kernel/exceptions-64s.S | 62 ++++++++++++--
arch/powerpc/kernel/idle_book3s.S | 137 +++++++++----------------------
arch/powerpc/kernel/irq.c | 3 +-
arch/powerpc/kernel/process.c | 12 +--
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 8 +-
arch/powerpc/platforms/powernv/idle.c | 104 +++++++++++++++++++----
arch/powerpc/platforms/powernv/smp.c | 31 ++++---
arch/powerpc/platforms/powernv/subcore.c | 3 +-
drivers/cpuidle/cpuidle-powernv.c | 37 +++++----
drivers/cpuidle/cpuidle-pseries.c | 22 +++--
17 files changed, 288 insertions(+), 177 deletions(-)
--
2.11.0
next reply other threads:[~2017-06-08 15:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-08 15:50 Nicholas Piggin [this message]
2017-06-08 15:51 ` [PATCH 01/14] powerpc/64s: idle move soft interrupt mask logic into C code Nicholas Piggin
2017-06-08 15:51 ` [PATCH 02/14] powerpc/64s: idle hotplug lazy-irq simplification Nicholas Piggin
2017-06-08 15:51 ` [PATCH 03/14] powerpc/64s: idle provide a default idle for POWER9 Nicholas Piggin
2017-06-08 15:51 ` [PATCH 04/14] powerpc/64s: idle process interrupts from system reset wakeup Nicholas Piggin
2017-06-08 15:51 ` [PATCH 05/14] powerpc/64s: msgclr when handling doorbell exceptions Nicholas Piggin
2017-06-08 15:51 ` [PATCH 06/14] powerpc/64s: interrupt replay balance the return branch predictor Nicholas Piggin
2017-06-08 15:51 ` [PATCH 07/14] powerpc/64s: idle branch to handler with virtual mode offset Nicholas Piggin
2017-06-08 15:51 ` [PATCH 08/14] powerpc/64s: idle avoid SRR usage in idle sleep/wake paths Nicholas Piggin
2017-06-08 15:51 ` [PATCH 09/14] powerpc/64s: idle hmi wakeup is unlikely Nicholas Piggin
2017-06-08 15:51 ` [PATCH 10/14] powerpc/64s: cpuidle set polling before enabling irqs Nicholas Piggin
2017-06-08 15:51 ` [PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals Nicholas Piggin
2017-06-08 15:51 ` [PATCH 12/14] powerpc/64s: cpuidle no memory barrier after break from idle Nicholas Piggin
2017-06-08 15:51 ` [PATCH 13/14] powerpc/64: runlatch CTRL[RUN] set optimisation Nicholas Piggin
2017-06-08 15:51 ` [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Nicholas Piggin
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