From: Abel Vesa <abel.vesa@nxp.com>
To: Sudeep Holla <sudeep.holla@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Rob Herring <robh@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <kernel@pengutronix.de>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Lucas Stach <l.stach@pengutronix.de>,
Aisheng Dong <aisheng.dong@nxp.com>
Cc: dl-linux-imx <linux-imx@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
Abel Vesa <abel.vesa@nxp.com>
Subject: [RFC 6/7] cpuidle-arm: Add arm64 wake helper for cpu_poke op
Date: Wed, 27 Mar 2019 13:21:16 +0000 [thread overview]
Message-ID: <1553692845-20983-7-git-send-email-abel.vesa@nxp.com> (raw)
In-Reply-To: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com>
When the arm_poke_idle_state gets called, the poking
cpu_ops of the current core gets called, passing on the
the index of the core to be poked.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---
arch/arm64/include/asm/cpuidle.h | 6 ++++++
arch/arm64/kernel/cpuidle.c | 8 ++++++++
drivers/cpuidle/cpuidle-arm.c | 2 +-
3 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/cpuidle.h b/arch/arm64/include/asm/cpuidle.h
index 3c5ddb4..e637d4d 100644
--- a/arch/arm64/include/asm/cpuidle.h
+++ b/arch/arm64/include/asm/cpuidle.h
@@ -7,6 +7,7 @@
#ifdef CONFIG_CPU_IDLE
extern int arm_cpuidle_init(unsigned int cpu);
extern int arm_cpuidle_suspend(int index);
+extern int arm_cpuidle_wake(int index);
#else
static inline int arm_cpuidle_init(unsigned int cpu)
{
@@ -17,5 +18,10 @@ static inline int arm_cpuidle_suspend(int index)
{
return -EOPNOTSUPP;
}
+
+static inline int arm_cpuidle_wake(int index)
+{
+ return -EOPNOTSUPP;
+}
#endif
#endif
diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c
index f2d1381..af00955 100644
--- a/arch/arm64/kernel/cpuidle.c
+++ b/arch/arm64/kernel/cpuidle.c
@@ -43,6 +43,14 @@ int arm_cpuidle_suspend(int index)
return cpu_ops[cpu]->cpu_suspend(index);
}
+int arm_cpuidle_wake(int index)
+{
+ int cpu = smp_processor_id();
+
+ return cpu_ops[cpu]->cpu_poke(index);
+}
+
+
#ifdef CONFIG_ACPI
#include <acpi/processor.h>
diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
index 76ee7ac..d5d3eef 100644
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -48,7 +48,7 @@ static int arm_enter_idle_state(struct cpuidle_device *dev,
static int arm_poke_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int cpu)
{
- return 0;
+ return arm_cpuidle_wake(cpu);
}
static struct cpuidle_driver arm_idle_driver __initdata = {
--
2.7.4
next prev parent reply other threads:[~2019-03-27 13:21 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-27 13:21 [RFC 0/7] cpuidle: Add poking mechanism to support non-IPI wakeup Abel Vesa
2019-03-27 13:21 ` [RFC 1/7] sched: idle: Add sched get idle state helper Abel Vesa
2019-03-27 13:21 ` [RFC 2/7] cpuidle: Add cpu poke support Abel Vesa
2019-03-27 13:21 ` [RFC 3/7] smp: Poke the cores before requesting IPI Abel Vesa
2019-03-27 13:21 ` [RFC 4/7] psci: Add cpu_poke ops to support core poking Abel Vesa
2019-03-27 13:21 ` [RFC 5/7] cpuidle-arm: Add ops to support poke alonside enter Abel Vesa
2019-03-27 13:21 ` Abel Vesa [this message]
2019-03-27 13:21 ` [RFC 7/7] arm64: dts: imx8mq: Add cpu-sleep state with poke wake-up enabled Abel Vesa
2019-03-27 15:44 ` [RFC 0/7] cpuidle: Add poking mechanism to support non-IPI wakeup Lucas Stach
2019-03-27 15:57 ` Marc Zyngier
2019-03-27 16:06 ` Lucas Stach
2019-03-27 17:00 ` Leonard Crestez
2019-03-27 17:11 ` Lucas Stach
2019-03-27 18:13 ` Marc Zyngier
2019-03-28 11:21 ` Aisheng Dong
2019-03-29 9:11 ` Richard Zhu
2019-03-27 17:45 ` Marc Zyngier
2019-03-27 17:55 ` Lucas Stach
2019-03-28 11:27 ` Aisheng Dong
2019-03-27 18:40 ` Leonard Crestez
2019-03-28 10:35 ` Marc Zyngier
2019-03-28 10:36 ` Rafael J. Wysocki
2019-03-28 11:55 ` Aisheng Dong
2019-03-28 10:45 ` Lorenzo Pieralisi
2019-11-06 20:14 ` Florian Fainelli
2019-11-06 21:31 ` Leonard Crestez
2019-11-06 22:10 ` Florian Fainelli
2019-11-06 22:47 ` Leonard Crestez
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=1553692845-20983-7-git-send-email-abel.vesa@nxp.com \
--to=abel.vesa@nxp.com \
--cc=aisheng.dong@nxp.com \
--cc=catalin.marinas@arm.com \
--cc=fabio.estevam@nxp.com \
--cc=kernel@pengutronix.de \
--cc=l.stach@pengutronix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=marc.zyngier@arm.com \
--cc=mark.rutland@arm.com \
--cc=rjw@rjwysocki.net \
--cc=robh@kernel.org \
--cc=shawnguo@kernel.org \
--cc=sudeep.holla@arm.com \
--cc=will.deacon@arm.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).