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Wysocki" Subject: [PATCH 3/4] x86: Remove __current_clr_polling() from mwait_idle() Date: Wed, 15 Nov 2023 10:13:24 -0500 Message-ID: <20231115151325.6262-4-frederic@kernel.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115151325.6262-1-frederic@kernel.org> References: <20231115151325.6262-1-frederic@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.3 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Wed, 15 Nov 2023 07:14:47 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782643467497276358 X-GMAIL-MSGID: 1782643467497276358 mwait_idle() is only ever called through by cpuidle, either from default_idle_call() or from cpuidle_enter(). In any case cpuidle_idle_call() sets again TIF_NR_POLLING after calling it so there is no point for this atomic operation upon idle exit. Acked-by: Rafael J. Wysocki Signed-off-by: Frederic Weisbecker --- arch/x86/kernel/process.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index b6f4e8399fca..fc7a38084606 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -930,7 +930,6 @@ static __cpuidle void mwait_idle(void) raw_local_irq_disable(); } } - __current_clr_polling(); } void select_idle_routine(const struct cpuinfo_x86 *c)