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Wysocki" , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20230112195539.821714572@infradead.org> References: <20230112195539.821714572@infradead.org> MIME-Version: 1.0 Message-ID: <167361307465.4906.223147863550715410.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754910934776974086?= X-GMAIL-MSGID: =?utf-8?q?1754910934776974086?= The following commit has been merged into the sched/core branch of tip: Commit-ID: b3f46658ce40a3467cda82f920dd9d5325ab0eaf Gitweb: https://git.kernel.org/tip/b3f46658ce40a3467cda82f920dd9d5325ab0eaf Author: Peter Zijlstra AuthorDate: Thu, 12 Jan 2023 20:43:22 +01:00 Committer: Ingo Molnar CommitterDate: Fri, 13 Jan 2023 11:46:40 +01:00 cpuidle, ARM/imx6: Push RCU-idle into driver Doing RCU-idle outside the driver, only to then temporarily enable it again, at least twice, before going idle is suboptimal. Notably both cpu_pm_enter() and cpu_cluster_pm_enter() implicity re-enable RCU. Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Tested-by: Tony Lindgren Tested-by: Ulf Hansson Reviewed-by: Frederic Weisbecker Acked-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/20230112195539.821714572@infradead.org --- arch/arm/mach-imx/cpuidle-imx6sx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 74ea172..1dc01f6 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -47,7 +47,9 @@ static int imx6sx_enter_wait(struct cpuidle_device *dev, cpu_pm_enter(); cpu_cluster_pm_enter(); + ct_idle_enter(); cpu_suspend(0, imx6sx_idle_finish); + ct_idle_exit(); cpu_cluster_pm_exit(); cpu_pm_exit(); @@ -87,7 +89,8 @@ static struct cpuidle_driver imx6sx_cpuidle_driver = { */ .exit_latency = 300, .target_residency = 500, - .flags = CPUIDLE_FLAG_TIMER_STOP, + .flags = CPUIDLE_FLAG_TIMER_STOP | + CPUIDLE_FLAG_RCU_IDLE, .enter = imx6sx_enter_wait, .name = "LOW-POWER-IDLE", .desc = "ARM power off",