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Wysocki" <rafael.j.wysocki@intel.com>, Frederic Weisbecker <frederic@kernel.org>, x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20230112195540.434302128@infradead.org> References: <20230112195540.434302128@infradead.org> MIME-Version: 1.0 Message-ID: <167361307255.4906.962152647120118730.tip-bot2@tip-bot2> Robot-ID: <tip-bot2@linutronix.de> Robot-Unsubscribe: Contact <mailto:tglx@linutronix.de> to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit 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: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754848466574431295?= X-GMAIL-MSGID: =?utf-8?q?1754910873297702161?= |
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[tip:,sched/core] cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again*
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Commit Message
tip-bot2 for Thomas Gleixner
Jan. 13, 2023, 12:31 p.m. UTC
The following commit has been merged into the sched/core branch of tip: Commit-ID: 6d9c7f51b1d9179bf7c3542267c656a934e8af23 Gitweb: https://git.kernel.org/tip/6d9c7f51b1d9179bf7c3542267c656a934e8af23 Author: Peter Zijlstra <peterz@infradead.org> AuthorDate: Thu, 12 Jan 2023 20:43:32 +01:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Fri, 13 Jan 2023 11:48:15 +01:00 cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again* So objtool found this bug: vmlinux.o: warning: objtool: intel_idle_irq+0x10c: call to trace_hardirqs_off() leaves .noinstr.text section As per commit 32d4fd5751ea ("cpuidle,intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE"): "must not have tracing in idle functions" Clearly people can't read and tinker along until splat dissapears. This straight up reverts commit d295ad34f236 ("intel_idle: Fix false positive RCU splats due to incorrect hardirqs state"). It doesn't re-introduce the problem because preceding patches fixed it properly. Fixes: d295ad34f236 ("intel_idle: Fix false positive RCU splats due to incorrect hardirqs state") Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195540.434302128@infradead.org --- drivers/idle/intel_idle.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index cfeb24d..f060ac7 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -168,13 +168,7 @@ static __cpuidle int intel_idle_irq(struct cpuidle_device *dev, raw_local_irq_enable(); ret = __intel_idle(dev, drv, index); - - /* - * The lockdep hardirqs state may be changed to 'on' with timer - * tick interrupt followed by __do_softirq(). Use local_irq_disable() - * to keep the hardirqs state correct. - */ - local_irq_disable(); + raw_local_irq_disable(); return ret; }