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Thu, 22 Oct 2026 19:54:14 +0000 Message-ID: Date: Thu, 22 Oct 2026 21:54:09 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] cpuidle: haltpoll: Only define guest_halt_poll_ns tracepoint when used To: Steven Rostedt , Linux Trace Kernel CC: "Mario Limonciello (AMD)" , Eiichi Tsukata , Julia Lawall , LKML References: <20261022153359.2433474b@gandalf.local.home> Content-Language: en-US From: "Wysocki, Rafael J" In-Reply-To: <20261022153359.2433474b@gandalf.local.home> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: VIVP296CA0052.AUTP296.PROD.OUTLOOK.COM (2603:10a6:800:353::7) To DM3PPF63A6024A9.namprd11.prod.outlook.com (2603:10b6:f:fc00::f27) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM3PPF63A6024A9:EE_|SA7PR11MB9594:EE_ X-MS-Office365-Filtering-Correlation-Id: 956ea737-86f1-414a-bf96-08df30763f69 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|376014|23010399003|261021121427099003|11063799006|261009223027099003|10067099003|56012099006|18002099003|22082099003; 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When a tracepoint is used only in code when a specific config is > enabled, their definition must also be only defined when the same config > is enabled otherwise it wastes memory. > > The tracepoint guest_halt_poll_ns is only used when CONFIG_CPU_IDLE_GOV_HALTPOLL > is enabled. Guard the definition of that tracepoint with the same config. > > Fixes: 0da11bf0cab90 ("cpuidle: haltpoll: Add trace points for guest_halt_poll_ns grow/shrink") > Signed-off-by: Steven Rostedt Acked-by: Rafael J. Wysocki Thanks! > --- > include/trace/events/power.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/include/trace/events/power.h b/include/trace/events/power.h > index 370f8df2fdb4..4d17eb307b6a 100644 > --- a/include/trace/events/power.h > +++ b/include/trace/events/power.h > @@ -497,6 +497,7 @@ DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_remove_request, > TP_ARGS(name, type, new_value) > ); > > +#ifdef CONFIG_CPU_IDLE_GOV_HALTPOLL > TRACE_EVENT(guest_halt_poll_ns, > > TP_PROTO(bool grow, unsigned int new, unsigned int old), > @@ -525,6 +526,8 @@ TRACE_EVENT(guest_halt_poll_ns, > trace_guest_halt_poll_ns(true, new, old) > #define trace_guest_halt_poll_ns_shrink(new, old) \ > trace_guest_halt_poll_ns(false, new, old) > +#endif /* CONFIG_CPU_IDLE_GOV_HALTPOLL */ > + > #endif /* _TRACE_POWER_H */ > > /* This part must be outside protection */