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[2620:137:e000::1:20]) by mx.google.com with ESMTP id a5-20020a05622a02c500b003f9a6f0f0d6si2038924qtx.535.2023.06.06.01.34.08; Tue, 06 Jun 2023 01:34:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=2XqEv3Cw; dkim=neutral (no key) header.i=@linutronix.de; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236851AbjFFI0z (ORCPT + 99 others); Tue, 6 Jun 2023 04:26:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236683AbjFFI0f (ORCPT ); Tue, 6 Jun 2023 04:26:35 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CD6DE47; Tue, 6 Jun 2023 01:26:21 -0700 (PDT) Date: Tue, 06 Jun 2023 08:26:19 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1686039979; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=H8mzsnY9FtQeaUGWGSc2NIja9JyxKGvS7J4PdlhIEZw=; b=2XqEv3Cw27EOqfmDNFJF/T5DhQRBw4mbRiDnrjyQ662MdzjFRCY7JS20bETYoeUulFTGaC mu6uUphN0Zg9ZlNHP/RT5OSC90gOowGSTF0zl0p5ab284U/9OSFLnfxJ+prn486r3FPHUA nmwwBJSsdt2Nbl06lGNco6gwfA3Y1PvvayipV8AeENQKIYqV/HGEPDRI9SzQxQxlHJd8Aa NwABBhI9tgUgLwmOC9nFjwZEn0mzUNU6sJOFatAJ+1Ne1iDr9PCPKu3bRD5u5XoXBcCfm5 k2uzwqThhQiKcxpKVdgP6vBXVkBGtT0rAi7Ib3dEkoJ97WbUCPz4OW6KBBlCHg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1686039979; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=H8mzsnY9FtQeaUGWGSc2NIja9JyxKGvS7J4PdlhIEZw=; b=1Xd3CmAC/UWTrk1NDEd03oqeSGdaDuzfUd8fPXJI+HO2TSvSg9A3G1orJ0UqrBpvwc0p1K 8bUP4vaFDPpHK2AA== From: "tip-bot2 for Mark Rutland" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: locking/core] locking/atomic: treewide: use raw_atomic*_() Cc: Mark Rutland , "Peter Zijlstra (Intel)" , Kees Cook , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20230605070124.3741859-19-mark.rutland@arm.com> References: <20230605070124.3741859-19-mark.rutland@arm.com> MIME-Version: 1.0 Message-ID: <168603997924.404.10199682746181539176.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails 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,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED 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: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767845765574889007?= X-GMAIL-MSGID: =?utf-8?q?1767941563049247338?= The following commit has been merged into the locking/core branch of tip: Commit-ID: 0f613bfa8268a89be25f2b6b58fc6fe8ccd9a2ba Gitweb: https://git.kernel.org/tip/0f613bfa8268a89be25f2b6b58fc6fe8ccd9a2ba Author: Mark Rutland AuthorDate: Mon, 05 Jun 2023 08:01:15 +01:00 Committer: Peter Zijlstra CommitterDate: Mon, 05 Jun 2023 09:57:20 +02:00 locking/atomic: treewide: use raw_atomic*_() Now that we have raw_atomic*_() definitions, there's no need to use arch_atomic*_() definitions outside of the low-level atomic definitions. Move treewide users of arch_atomic*_() over to the equivalent raw_atomic*_(). There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20230605070124.3741859-19-mark.rutland@arm.com --- arch/powerpc/kernel/smp.c | 12 ++++++------ arch/x86/kernel/alternative.c | 4 ++-- arch/x86/kernel/cpu/mce/core.c | 16 ++++++++-------- arch/x86/kernel/nmi.c | 2 +- arch/x86/kernel/pvclock.c | 4 ++-- arch/x86/kvm/x86.c | 2 +- include/asm-generic/bitops/atomic.h | 12 ++++++------ include/asm-generic/bitops/lock.h | 8 ++++---- include/linux/context_tracking.h | 4 ++-- include/linux/context_tracking_state.h | 2 +- include/linux/cpumask.h | 2 +- include/linux/jump_label.h | 2 +- kernel/context_tracking.c | 12 ++++++------ kernel/sched/clock.c | 2 +- 14 files changed, 42 insertions(+), 42 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 265801a..e8965f1 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -417,9 +417,9 @@ noinstr static void nmi_ipi_lock_start(unsigned long *flags) { raw_local_irq_save(*flags); hard_irq_disable(); - while (arch_atomic_cmpxchg(&__nmi_ipi_lock, 0, 1) == 1) { + while (raw_atomic_cmpxchg(&__nmi_ipi_lock, 0, 1) == 1) { raw_local_irq_restore(*flags); - spin_until_cond(arch_atomic_read(&__nmi_ipi_lock) == 0); + spin_until_cond(raw_atomic_read(&__nmi_ipi_lock) == 0); raw_local_irq_save(*flags); hard_irq_disable(); } @@ -427,15 +427,15 @@ noinstr static void nmi_ipi_lock_start(unsigned long *flags) noinstr static void nmi_ipi_lock(void) { - while (arch_atomic_cmpxchg(&__nmi_ipi_lock, 0, 1) == 1) - spin_until_cond(arch_atomic_read(&__nmi_ipi_lock) == 0); + while (raw_atomic_cmpxchg(&__nmi_ipi_lock, 0, 1) == 1) + spin_until_cond(raw_atomic_read(&__nmi_ipi_lock) == 0); } noinstr static void nmi_ipi_unlock(void) { smp_mb(); - WARN_ON(arch_atomic_read(&__nmi_ipi_lock) != 1); - arch_atomic_set(&__nmi_ipi_lock, 0); + WARN_ON(raw_atomic_read(&__nmi_ipi_lock) != 1); + raw_atomic_set(&__nmi_ipi_lock, 0); } noinstr static void nmi_ipi_unlock_end(unsigned long *flags) diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index f615e0c..18f16e9 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -1799,7 +1799,7 @@ struct bp_patching_desc *try_get_desc(void) { struct bp_patching_desc *desc = &bp_desc; - if (!arch_atomic_inc_not_zero(&desc->refs)) + if (!raw_atomic_inc_not_zero(&desc->refs)) return NULL; return desc; @@ -1810,7 +1810,7 @@ static __always_inline void put_desc(void) struct bp_patching_desc *desc = &bp_desc; smp_mb__before_atomic(); - arch_atomic_dec(&desc->refs); + raw_atomic_dec(&desc->refs); } static __always_inline void *text_poke_addr(struct text_poke_loc *tp) diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 2eec60f..ab156e6 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1022,12 +1022,12 @@ static noinstr int mce_start(int *no_way_out) if (!timeout) return ret; - arch_atomic_add(*no_way_out, &global_nwo); + raw_atomic_add(*no_way_out, &global_nwo); /* * Rely on the implied barrier below, such that global_nwo * is updated before mce_callin. */ - order = arch_atomic_inc_return(&mce_callin); + order = raw_atomic_inc_return(&mce_callin); arch_cpumask_clear_cpu(smp_processor_id(), &mce_missing_cpus); /* Enable instrumentation around calls to external facilities */ @@ -1036,10 +1036,10 @@ static noinstr int mce_start(int *no_way_out) /* * Wait for everyone. */ - while (arch_atomic_read(&mce_callin) != num_online_cpus()) { + while (raw_atomic_read(&mce_callin) != num_online_cpus()) { if (mce_timed_out(&timeout, "Timeout: Not all CPUs entered broadcast exception handler")) { - arch_atomic_set(&global_nwo, 0); + raw_atomic_set(&global_nwo, 0); goto out; } ndelay(SPINUNIT); @@ -1054,7 +1054,7 @@ static noinstr int mce_start(int *no_way_out) /* * Monarch: Starts executing now, the others wait. */ - arch_atomic_set(&mce_executing, 1); + raw_atomic_set(&mce_executing, 1); } else { /* * Subject: Now start the scanning loop one by one in @@ -1062,10 +1062,10 @@ static noinstr int mce_start(int *no_way_out) * This way when there are any shared banks it will be * only seen by one CPU before cleared, avoiding duplicates. */ - while (arch_atomic_read(&mce_executing) < order) { + while (raw_atomic_read(&mce_executing) < order) { if (mce_timed_out(&timeout, "Timeout: Subject CPUs unable to finish machine check processing")) { - arch_atomic_set(&global_nwo, 0); + raw_atomic_set(&global_nwo, 0); goto out; } ndelay(SPINUNIT); @@ -1075,7 +1075,7 @@ static noinstr int mce_start(int *no_way_out) /* * Cache the global no_way_out state. */ - *no_way_out = arch_atomic_read(&global_nwo); + *no_way_out = raw_atomic_read(&global_nwo); ret = order; diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c index 776f4b1..a0c5518 100644 --- a/arch/x86/kernel/nmi.c +++ b/arch/x86/kernel/nmi.c @@ -496,7 +496,7 @@ DEFINE_IDTENTRY_RAW(exc_nmi) */ sev_es_nmi_complete(); if (IS_ENABLED(CONFIG_NMI_CHECK_CPU)) - arch_atomic_long_inc(&nsp->idt_calls); + raw_atomic_long_inc(&nsp->idt_calls); if (IS_ENABLED(CONFIG_SMP) && arch_cpu_is_offline(smp_processor_id())) return; diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c index 56acf53..b3f8137 100644 --- a/arch/x86/kernel/pvclock.c +++ b/arch/x86/kernel/pvclock.c @@ -101,11 +101,11 @@ u64 __pvclock_clocksource_read(struct pvclock_vcpu_time_info *src, bool dowd) * updating at the same time, and one of them could be slightly behind, * making the assumption that last_value always go forward fail to hold. */ - last = arch_atomic64_read(&last_value); + last = raw_atomic64_read(&last_value); do { if (ret <= last) return last; - } while (!arch_atomic64_try_cmpxchg(&last_value, &last, ret)); + } while (!raw_atomic64_try_cmpxchg(&last_value, &last, ret)); return ret; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ceb7c5e..ac6f609 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13155,7 +13155,7 @@ EXPORT_SYMBOL_GPL(kvm_arch_end_assignment); bool noinstr kvm_arch_has_assigned_device(struct kvm *kvm) { - return arch_atomic_read(&kvm->arch.assigned_device_count); + return raw_atomic_read(&kvm->arch.assigned_device_count); } EXPORT_SYMBOL_GPL(kvm_arch_has_assigned_device); diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h index 71ab4ba..e076e07 100644 --- a/include/asm-generic/bitops/atomic.h +++ b/include/asm-generic/bitops/atomic.h @@ -15,21 +15,21 @@ static __always_inline void arch_set_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); - arch_atomic_long_or(BIT_MASK(nr), (atomic_long_t *)p); + raw_atomic_long_or(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline void arch_clear_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); - arch_atomic_long_andnot(BIT_MASK(nr), (atomic_long_t *)p); + raw_atomic_long_andnot(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline void arch_change_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); - arch_atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p); + raw_atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline int @@ -39,7 +39,7 @@ arch_test_and_set_bit(unsigned int nr, volatile unsigned long *p) unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); - old = arch_atomic_long_fetch_or(mask, (atomic_long_t *)p); + old = raw_atomic_long_fetch_or(mask, (atomic_long_t *)p); return !!(old & mask); } @@ -50,7 +50,7 @@ arch_test_and_clear_bit(unsigned int nr, volatile unsigned long *p) unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); - old = arch_atomic_long_fetch_andnot(mask, (atomic_long_t *)p); + old = raw_atomic_long_fetch_andnot(mask, (atomic_long_t *)p); return !!(old & mask); } @@ -61,7 +61,7 @@ arch_test_and_change_bit(unsigned int nr, volatile unsigned long *p) unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); - old = arch_atomic_long_fetch_xor(mask, (atomic_long_t *)p); + old = raw_atomic_long_fetch_xor(mask, (atomic_long_t *)p); return !!(old & mask); } diff --git a/include/asm-generic/bitops/lock.h b/include/asm-generic/bitops/lock.h index 630f2f6..4091351 100644 --- a/include/asm-generic/bitops/lock.h +++ b/include/asm-generic/bitops/lock.h @@ -25,7 +25,7 @@ arch_test_and_set_bit_lock(unsigned int nr, volatile unsigned long *p) if (READ_ONCE(*p) & mask) return 1; - old = arch_atomic_long_fetch_or_acquire(mask, (atomic_long_t *)p); + old = raw_atomic_long_fetch_or_acquire(mask, (atomic_long_t *)p); return !!(old & mask); } @@ -41,7 +41,7 @@ static __always_inline void arch_clear_bit_unlock(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); - arch_atomic_long_fetch_andnot_release(BIT_MASK(nr), (atomic_long_t *)p); + raw_atomic_long_fetch_andnot_release(BIT_MASK(nr), (atomic_long_t *)p); } /** @@ -63,7 +63,7 @@ arch___clear_bit_unlock(unsigned int nr, volatile unsigned long *p) p += BIT_WORD(nr); old = READ_ONCE(*p); old &= ~BIT_MASK(nr); - arch_atomic_long_set_release((atomic_long_t *)p, old); + raw_atomic_long_set_release((atomic_long_t *)p, old); } /** @@ -83,7 +83,7 @@ static inline bool arch_clear_bit_unlock_is_negative_byte(unsigned int nr, unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); - old = arch_atomic_long_fetch_andnot_release(mask, (atomic_long_t *)p); + old = raw_atomic_long_fetch_andnot_release(mask, (atomic_long_t *)p); return !!(old & BIT(7)); } #define arch_clear_bit_unlock_is_negative_byte arch_clear_bit_unlock_is_negative_byte diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index d3cbb6c..6e76b9d 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -119,7 +119,7 @@ extern void ct_idle_exit(void); */ static __always_inline bool rcu_dynticks_curr_cpu_in_eqs(void) { - return !(arch_atomic_read(this_cpu_ptr(&context_tracking.state)) & RCU_DYNTICKS_IDX); + return !(raw_atomic_read(this_cpu_ptr(&context_tracking.state)) & RCU_DYNTICKS_IDX); } /* @@ -128,7 +128,7 @@ static __always_inline bool rcu_dynticks_curr_cpu_in_eqs(void) */ static __always_inline unsigned long ct_state_inc(int incby) { - return arch_atomic_add_return(incby, this_cpu_ptr(&context_tracking.state)); + return raw_atomic_add_return(incby, this_cpu_ptr(&context_tracking.state)); } static __always_inline bool warn_rcu_enter(void) diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h index fdd537e..bbff5f7 100644 --- a/include/linux/context_tracking_state.h +++ b/include/linux/context_tracking_state.h @@ -51,7 +51,7 @@ DECLARE_PER_CPU(struct context_tracking, context_tracking); #ifdef CONFIG_CONTEXT_TRACKING_USER static __always_inline int __ct_state(void) { - return arch_atomic_read(this_cpu_ptr(&context_tracking.state)) & CT_STATE_MASK; + return raw_atomic_read(this_cpu_ptr(&context_tracking.state)) & CT_STATE_MASK; } #endif diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index ca736b0..0d2e2a3 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -1071,7 +1071,7 @@ static inline const struct cpumask *get_cpu_mask(unsigned int cpu) */ static __always_inline unsigned int num_online_cpus(void) { - return arch_atomic_read(&__num_online_cpus); + return raw_atomic_read(&__num_online_cpus); } #define num_possible_cpus() cpumask_weight(cpu_possible_mask) #define num_present_cpus() cpumask_weight(cpu_present_mask) diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 4e968eb..f0a949b 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -257,7 +257,7 @@ extern enum jump_label_type jump_label_init_type(struct jump_entry *entry); static __always_inline int static_key_count(struct static_key *key) { - return arch_atomic_read(&key->enabled); + return raw_atomic_read(&key->enabled); } static __always_inline void jump_label_init(void) diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index a09f1c1..6ef0b35 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c @@ -510,7 +510,7 @@ void noinstr __ct_user_enter(enum ctx_state state) * In this we case we don't care about any concurrency/ordering. */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) - arch_atomic_set(&ct->state, state); + raw_atomic_set(&ct->state, state); } else { /* * Even if context tracking is disabled on this CPU, because it's outside @@ -527,7 +527,7 @@ void noinstr __ct_user_enter(enum ctx_state state) */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) { /* Tracking for vtime only, no concurrent RCU EQS accounting */ - arch_atomic_set(&ct->state, state); + raw_atomic_set(&ct->state, state); } else { /* * Tracking for vtime and RCU EQS. Make sure we don't race @@ -535,7 +535,7 @@ void noinstr __ct_user_enter(enum ctx_state state) * RCU only requires RCU_DYNTICKS_IDX increments to be fully * ordered. */ - arch_atomic_add(state, &ct->state); + raw_atomic_add(state, &ct->state); } } } @@ -630,12 +630,12 @@ void noinstr __ct_user_exit(enum ctx_state state) * In this we case we don't care about any concurrency/ordering. */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) - arch_atomic_set(&ct->state, CONTEXT_KERNEL); + raw_atomic_set(&ct->state, CONTEXT_KERNEL); } else { if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) { /* Tracking for vtime only, no concurrent RCU EQS accounting */ - arch_atomic_set(&ct->state, CONTEXT_KERNEL); + raw_atomic_set(&ct->state, CONTEXT_KERNEL); } else { /* * Tracking for vtime and RCU EQS. Make sure we don't race @@ -643,7 +643,7 @@ void noinstr __ct_user_exit(enum ctx_state state) * RCU only requires RCU_DYNTICKS_IDX increments to be fully * ordered. */ - arch_atomic_sub(state, &ct->state); + raw_atomic_sub(state, &ct->state); } } } diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c index b5cc2b5..71443cf 100644 --- a/kernel/sched/clock.c +++ b/kernel/sched/clock.c @@ -287,7 +287,7 @@ again: clock = wrap_max(clock, min_clock); clock = wrap_min(clock, max_clock); - if (!arch_try_cmpxchg64(&scd->clock, &old_clock, clock)) + if (!raw_try_cmpxchg64(&scd->clock, &old_clock, clock)) goto again; return clock;