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Commit b76161f6 authored by Neeraj Upadhyay's avatar Neeraj Upadhyay Committed by Gerrit - the friendly Code Review server
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soc: qcom: Register irq stacks with minidump 



Register irq stacks, so that irq context is correctly
captured in minidumps.

Change-Id: Iabafe0464961a0c25164d66a186846290fbfcafb
Signed-off-by: default avatarNeeraj Upadhyay <neeraju@codeaurora.org>
parent ceeea50c

drivers/soc/qcom/minidump_log.c

+39 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/module.h>
@@ -11,6 +11,7 @@ 
#include <linux/thread_info.h>

#include <soc/qcom/minidump.h>

#include <asm/sections.h>

#include <asm/stacktrace.h>

#include <linux/mm.h>

#include <linux/sched/task.h>

#include <linux/vmalloc.h>
@@ -156,9 +157,46 @@ void dump_stack_minidump(u64 sp) 
		pr_err("Failed to add current task %d in Minidump\n", cpu);

}



#ifdef CONFIG_ARM64

static void register_irq_stack(void)

{

	int cpu;

	unsigned int i;

	int irq_stack_pages_count;

	u64 irq_stack_base;

	struct md_region irq_sp_entry;

	u64 sp;



	for_each_possible_cpu(cpu) {

		irq_stack_base = (u64)per_cpu(irq_stack_ptr, cpu);

		if (IS_ENABLED(CONFIG_VMAP_STACK)) {

			irq_stack_pages_count = IRQ_STACK_SIZE / PAGE_SIZE;

			sp = irq_stack_base & ~(PAGE_SIZE - 1);

			for (i = 0; i < irq_stack_pages_count; i++) {

				scnprintf(irq_sp_entry.name,

					  sizeof(irq_sp_entry.name),

					  "KISTACK%d_%d", cpu, i);

				register_stack_entry(&irq_sp_entry, sp,

						     PAGE_SIZE, cpu);

				sp += PAGE_SIZE;

			}

		} else {

			sp = irq_stack_base;

			scnprintf(irq_sp_entry.name, sizeof(irq_sp_entry.name),

				  "KISTACK%d", cpu);

			register_stack_entry(&irq_sp_entry, sp, IRQ_STACK_SIZE,

					     cpu);

		}

	}

}

#else

static inline void register_irq_stack(void) {}

#endif



static int __init msm_minidump_log_init(void)

{

	register_kernel_sections();

	register_irq_stack();

	register_log_buf();

	return 0;

}