threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ARM_SWITCH_TO_H
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#define __ASM_ARM_SWITCH_TO_H
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#include <linux/thread_info.h>
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/*
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* For v7 SMP cores running a preemptible kernel we may be pre-empted
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* during a TLB maintenance operation, so execute an inner-shareable dsb
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* to ensure that the maintenance completes in case we migrate to another
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* CPU.
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*/
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#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP) && defined(CONFIG_CPU_V7)
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#define __complete_pending_tlbi() dsb(ish)
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#else
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#define __complete_pending_tlbi()
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#endif
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/*
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* switch_to(prev, next) should switch from task `prev' to `next'
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* `prev' will never be the same as `next'. schedule() itself
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* contains the memory barrier to tell GCC not to cache `current'.
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*/
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extern struct task_struct *__switch_to(struct task_struct *, struct thread_info *, struct thread_info *);
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#define switch_to(prev,next,last) \
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do { \
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__complete_pending_tlbi(); \
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last = __switch_to(prev,task_thread_info(prev), task_thread_info(next)); \
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} while (0)
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#endif /* __ASM_ARM_SWITCH_TO_H */
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