From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH 18/36] cpuidle: Annotate poll_idle() Date: Wed, 08 Jun 2022 16:27:41 +0200 Message-ID: <20220608144517.061583457@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=4bele9ejzKzNd9pnJzXay06BR+7LKyo/8SDE7WF3xHo=; b=tPPYeAWPLLomHQyMVLJ5rPzsHQ RWGF7M0Mce61MT+ddmgb9LEMNk1WL5mudqg073VXtHlq00DAzt78HxCsBAEtKRxkcXavO/85/VZxk St2GqSY9qsP+Xr58sUTFba5HKXMa5app75CuJy9Gj6wZChoH6jBqlb60S6+uDOQ/9uA1CHpCagvMO PjB4e4NnxbHKE12LCbxTxFaNyJdX+xa1TwHy0IYtSD8fTskaneE8elW12I3edyD9ShjEHISc8iDZ4 GRPIMTpQEWgfRfkgST/ySyn1wwEnoM5Cgrw7tfhziDkregbr3JBwLs34aQW7JRzuCY0Omo+qRiaQF AQ82XnZw==; 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 The __cpuidle functions will become a noinstr class, as such they need explicit annotations. Signed-off-by: Peter Zijlstra (Intel) --- drivers/cpuidle/poll_state.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/cpuidle/poll_state.c +++ b/drivers/cpuidle/poll_state.c @@ -13,7 +13,10 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - u64 time_start = local_clock(); + u64 time_start; + + instrumentation_begin(); + time_start = local_clock(); dev->poll_time_limit = false; @@ -39,6 +42,7 @@ static int __cpuidle poll_idle(struct cp raw_local_irq_disable(); current_clr_polling(); + instrumentation_end(); return index; }