From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH 10/36] cpuidle,omap3: Push RCU-idle into driver Date: Wed, 08 Jun 2022 16:27:33 +0200 Message-ID: <20220608144516.552202452@infradead.org> References: <20220608142723.103523089@infradead.org> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=F6PB1BepzhzXddHr1ut7n1kgQmvFEr/OgkB1cnk1WPs=; b=M1tCXyGnbstCdvvtQ6/mZ12wfv +hr+FYDVrB35l8sZT0TTdCikLVIUmFfj6NCuF5T8qgOzzSP3eAZudz5T6mIBNivroM+BT4eJldpE9 7+Nnin03YehIhXL00k8dYiLlUce04mN5y6Ve+yhirYQRYF7ZJS7t2XyylndNROV2N8dfM1PpTU/jz C1KdUd9/P80+q0ZbUHi4gev9nD3XryZhgPN6/lHDLu9WiEScUhG3xTkiznMw9GW8m2H5YeEzUF4I7 K4pDvTrIND321JNLvo0AQr3NAc7PiLRPH3zuBWzcqsQzz70MHALRsvHj1fvGnpMkOMw7xp7tYxu8W voqbkDkQ==; List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: peterz@infradead.org Cc: rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, paul.walmsley@sifive.com, palmer@dabbelt.com, ao Doing RCU-idle outside the driver, only to then teporarily enable it again before going idle is daft. Signed-off-by: Peter Zijlstra (Intel) --- arch/arm/mach-omap2/cpuidle34xx.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -133,7 +133,9 @@ static int omap3_enter_idle(struct cpuid } /* Execute ARM wfi */ + rcu_idle_enter(); omap_sram_idle(); + rcu_idle_exit(); /* * Call idle CPU PM enter notifier chain to restore @@ -265,6 +267,7 @@ static struct cpuidle_driver omap3_idle_ .owner = THIS_MODULE, .states = { { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 2 + 2, .target_residency = 5, @@ -272,6 +275,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 10 + 10, .target_residency = 30, @@ -279,6 +283,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 50 + 50, .target_residency = 300, @@ -286,6 +291,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU RET + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 1500 + 1800, .target_residency = 4000, @@ -293,6 +299,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU OFF + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 2500 + 7500, .target_residency = 12000, @@ -300,6 +307,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU RET + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 3000 + 8500, .target_residency = 15000, @@ -307,6 +315,7 @@ static struct cpuidle_driver omap3_idle_ .desc = "MPU OFF + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 10000 + 30000, .target_residency = 30000, @@ -328,6 +337,7 @@ static struct cpuidle_driver omap3430_id .owner = THIS_MODULE, .states = { { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 110 + 162, .target_residency = 5, @@ -335,6 +345,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 106 + 180, .target_residency = 309, @@ -342,6 +353,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU ON + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 107 + 410, .target_residency = 46057, @@ -349,6 +361,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU RET + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 121 + 3374, .target_residency = 46057, @@ -356,6 +369,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU OFF + CORE ON", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 855 + 1146, .target_residency = 46057, @@ -363,6 +377,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU RET + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 7580 + 4134, .target_residency = 484329, @@ -370,6 +385,7 @@ static struct cpuidle_driver omap3430_id .desc = "MPU OFF + CORE RET", }, { + .flags = CPUIDLE_FLAG_RCU_IDLE, .enter = omap3_enter_idle_bm, .exit_latency = 7505 + 15274, .target_residency = 484329,