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TO RESET: preempt_enable: check if no_preempt isn't negative

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Change-Id: I1cef2077c50f3b3020870505dd065d10617f440e
This commit is contained in:
Masamichi Takagi
2020-06-15 12:48:25 +09:00
parent 4f7fd90300
commit 191e6f7499
6 changed files with 125 additions and 1 deletions
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43
arch/arm64/kernel/cpu.c
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@ -730,6 +730,49 @@ static void show_context_stack(struct pt_regs *regs)
}
}
#ifdef ENABLE_FUGAKU_HACKS
void __show_context_stack(struct thread *thread,
unsigned long pc, uintptr_t sp, int kprintf_locked)
{
uintptr_t stack_top;
unsigned long irqflags = 0;
stack_top = ALIGN_UP(sp, (uintptr_t)KERNEL_STACK_SIZE);
if (!kprintf_locked)
irqflags = kprintf_lock();
__kprintf("TID: %d, call stack (most recent first):\n",
thread->tid);
__kprintf("PC: %016lx, SP: %016lx\n", pc, sp);
for (;;) {
extern char _head[], _end[];
uintptr_t *fp, *lr;
fp = (uintptr_t *)sp;
lr = (uintptr_t *)(sp + 8);
if ((*fp <= sp)) {
break;
}
if ((*fp > stack_top)) {
break;
}
if ((*lr < (unsigned long)_head) ||
(*lr > (unsigned long)_end)) {
break;
}
__kprintf("PC: %016lx, SP: %016lx, FP: %016lx\n", *lr - 4, sp, *fp);
sp = *fp;
}
if (!kprintf_locked)
kprintf_unlock(irqflags);
}
#endif
void handle_IPI(unsigned int vector, struct pt_regs *regs)
{
struct ihk_mc_interrupt_handler *h;