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arm64: add CPU field to struct thread_info

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The CPU field will be moved back into thread_info even when
THREAD_INFO_IN_TASK is enabled, so add it back to arm64's definition of
struct thread_info.

Note that arm64 always has CONFIG_SMP=y so there is no point in guarding
the CPU field with an #ifdef.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
This commit is contained in:
Ard Biesheuvel 2021-09-14 14:10:29 +02:00
parent e4e737bb5c
commit 001430c191
2 changed files with 2 additions and 0 deletions
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1
arch/arm64/include/asm/thread_info.h
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@ -42,6 +42,7 @@ struct thread_info {
void *scs_base; void *scs_base;
void *scs_sp; void *scs_sp;
#endif #endif
u32 cpu;
}; };
#define thread_saved_pc(tsk) \ #define thread_saved_pc(tsk) \

1
arch/arm64/kernel/asm-offsets.c
View file

@ -29,6 +29,7 @@ int main(void)
DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
DEFINE(TSK_CPU, offsetof(struct task_struct, cpu)); DEFINE(TSK_CPU, offsetof(struct task_struct, cpu));
BLANK(); BLANK();
DEFINE(TSK_TI_CPU, offsetof(struct task_struct, thread_info.cpu));
DEFINE(TSK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags)); DEFINE(TSK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags));
DEFINE(TSK_TI_PREEMPT, offsetof(struct task_struct, thread_info.preempt_count)); DEFINE(TSK_TI_PREEMPT, offsetof(struct task_struct, thread_info.preempt_count));
#ifdef CONFIG_ARM64_SW_TTBR0_PAN #ifdef CONFIG_ARM64_SW_TTBR0_PAN