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Tue, 7 Nov 2023 21:59:07 +0000 From: Ankur Arora To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, peterz@infradead.org, torvalds@linux-foundation.org, paulmck@kernel.org, linux-mm@kvack.org, x86@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, jgross@suse.com, andrew.cooper3@citrix.com, mingo@kernel.org, bristot@kernel.org, mathieu.desnoyers@efficios.com, geert@linux-m68k.org, glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com, mattst88@gmail.com, krypton@ulrich-teichert.org, rostedt@goodmis.org, David.Laight@ACULAB.COM, richard@nod.at, mjguzik@gmail.com, Ankur Arora Subject: [RFC PATCH 28/86] Revert "preempt/dynamic: Provide preempt_schedule[_notrace]() static calls" Date: Tue, 7 Nov 2023 13:57:14 -0800 Message-Id: <20231107215742.363031-29-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231107215742.363031-1-ankur.a.arora@oracle.com> References: <20231107215742.363031-1-ankur.a.arora@oracle.com> X-ClientProxiedBy: MW4PR03CA0036.namprd03.prod.outlook.com (2603:10b6:303:8e::11) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|CY5PR10MB6141:EE_ X-MS-Office365-Filtering-Correlation-Id: 1490ac5a-95b9-40e9-962f-08dbdfdcc409 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Tue, 07 Nov 2023 14:03:58 -0800 (PST) X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 agentk.vger.email X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1781944441621036652 X-GMAIL-MSGID: 1781944441621036652 This reverts commit 2c9a98d3bc808717ab63ad928a2b568967775388. Signed-off-by: Ankur Arora --- arch/x86/include/asm/preempt.h | 34 ++++++++-------------------------- kernel/sched/core.c | 12 ------------ 2 files changed, 8 insertions(+), 38 deletions(-) diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h index 967879366d27..a7bbe15145a5 100644 --- a/arch/x86/include/asm/preempt.h +++ b/arch/x86/include/asm/preempt.h @@ -7,7 +7,6 @@ #include #include -#include /* We use the MSB mostly because its available */ #define PREEMPT_NEED_RESCHED 0x80000000 @@ -105,33 +104,16 @@ static __always_inline bool should_resched(int preempt_offset) } #ifdef CONFIG_PREEMPTION + extern asmlinkage void preempt_schedule_thunk(void); +# define __preempt_schedule() \ + asm volatile ("call preempt_schedule_thunk" : ASM_CALL_CONSTRAINT) -extern asmlinkage void preempt_schedule(void); -extern asmlinkage void preempt_schedule_thunk(void); - -#define __preempt_schedule_func preempt_schedule_thunk - -DECLARE_STATIC_CALL(preempt_schedule, __preempt_schedule_func); - -#define __preempt_schedule() \ -do { \ - __ADDRESSABLE(STATIC_CALL_KEY(preempt_schedule)); \ - asm volatile ("call " STATIC_CALL_TRAMP_STR(preempt_schedule) : ASM_CALL_CONSTRAINT); \ -} while (0) - -extern asmlinkage void preempt_schedule_notrace(void); -extern asmlinkage void preempt_schedule_notrace_thunk(void); - -#define __preempt_schedule_notrace_func preempt_schedule_notrace_thunk - -DECLARE_STATIC_CALL(preempt_schedule_notrace, __preempt_schedule_notrace_func); - -#define __preempt_schedule_notrace() \ -do { \ - __ADDRESSABLE(STATIC_CALL_KEY(preempt_schedule_notrace)); \ - asm volatile ("call " STATIC_CALL_TRAMP_STR(preempt_schedule_notrace) : ASM_CALL_CONSTRAINT); \ -} while (0) + extern asmlinkage void preempt_schedule(void); + extern asmlinkage void preempt_schedule_notrace_thunk(void); +# define __preempt_schedule_notrace() \ + asm volatile ("call preempt_schedule_notrace_thunk" : ASM_CALL_CONSTRAINT) + extern asmlinkage void preempt_schedule_notrace(void); #endif #endif /* __ASM_PREEMPT_H */ diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 51df0b62f519..2e191992109b 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6891,12 +6891,6 @@ asmlinkage __visible void __sched notrace preempt_schedule(void) NOKPROBE_SYMBOL(preempt_schedule); EXPORT_SYMBOL(preempt_schedule); -#ifdef CONFIG_PREEMPT_DYNAMIC -DEFINE_STATIC_CALL(preempt_schedule, __preempt_schedule_func); -EXPORT_STATIC_CALL(preempt_schedule); -#endif - - /** * preempt_schedule_notrace - preempt_schedule called by tracing * @@ -6949,12 +6943,6 @@ asmlinkage __visible void __sched notrace preempt_schedule_notrace(void) } EXPORT_SYMBOL_GPL(preempt_schedule_notrace); -#ifdef CONFIG_PREEMPT_DYNAMIC -DEFINE_STATIC_CALL(preempt_schedule_notrace, __preempt_schedule_notrace_func); -EXPORT_STATIC_CALL(preempt_schedule_notrace); -#endif - - #endif /* CONFIG_PREEMPTION */ /*