mirror of
https://github.com/hardkernel/kernel_common_drivers.git
synced 2026-06-25 12:03:48 +09:00
Lei Zhang
ae8f7a4020
PD#SWPL-201692 Problem: spinlock is sleeping lock, cause BUG_ON in atomic context Solution: change spinlock to raw_spinlock Verify: on A5 Change-Id: Iea05aa36c58143d0efe880631d8906d9125fe55e Signed-off-by: Lei Zhang <lei.zhang@amlogic.com>
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
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/*
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* Copyright (c) 2019 Amlogic, Inc. All rights reserved.
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*/
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#ifndef __VMAP_STACK_H__
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#define __VMAP_STACK_H__
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#include <linux/seq_file.h>
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#define STACK_SHRINK_THRESHOLD (PAGE_SIZE + 1024)
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#define STACK_SHRINK_SLEEP (HZ)
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#ifdef CONFIG_64BIT
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#define VM_STACK_AREA_SIZE SZ_512M
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#define VMAP_ADDR_START VMALLOC_START
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#define VMAP_ADDR_END VMALLOC_END
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#define VMAP_ALIGN VM_STACK_AREA_SIZE
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#else
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/* currently support max 6144 tasks on 32bit */
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#define VM_STACK_AREA_SIZE (SZ_64M - SZ_16M)
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#ifdef CONFIG_KASAN /* change place if open kasan */
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#define VMAP_ADDR_START VMALLOC_START
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#define VMAP_ADDR_END (VMALLOC_START + VM_STACK_AREA_SIZE)
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#else
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#define VMAP_ADDR_START MODULES_VADDR
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#define VMAP_ADDR_END MODULES_END
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#endif /* CONFIG_KASAN */
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#define VMAP_ALIGN SZ_64M
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#endif
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#define STACK_TOP_PAGE_OFF (THREAD_SIZE - PAGE_SIZE)
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#define MAX_TASKS (VM_STACK_AREA_SIZE / THREAD_SIZE)
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#define VMAP_PAGE_FLAG (__GFP_ZERO | __GFP_HIGH |\
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__GFP_ATOMIC | __GFP_REPEAT)
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#ifdef CONFIG_KASAN
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#define VMAP_CACHE_PAGE_ORDER 9
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#else
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#define VMAP_CACHE_PAGE_ORDER CONFIG_AMLOGIC_VMAP_CACHE_PAGE_ORDER
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#endif
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#define VMAP_CACHE_PAGE BIT(VMAP_CACHE_PAGE_ORDER)
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#define CACHE_MAINTAIN_DELAY (HZ / 2)
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struct aml_vmap {
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raw_spinlock_t vmap_lock; /* for address space */
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unsigned int start_bit;
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int cached_pages;
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struct vm_struct *root_vm;
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unsigned long *bitmap;
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struct list_head list;
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raw_spinlock_t page_lock; /* for cached pages */
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};
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#ifdef CONFIG_ARM64
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struct stack_info;
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DECLARE_PER_CPU_ALIGNED(unsigned long [IRQ_STACK_SIZE / sizeof(long)], irq_stack);
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DECLARE_PER_CPU(unsigned long [THREAD_SIZE / sizeof(long)], vmap_stack);
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bool on_vmap_stack(unsigned long sp, struct stack_info *info);
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void dump_backtrace_entry_vmap(unsigned long ip, unsigned long fp,
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unsigned long low, const char *loglvl);
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#else
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extern void *irq_stack[NR_CPUS];
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#endif
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struct pt_regs *handle_vmap_fault(unsigned long addr,
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unsigned int esr, struct pt_regs *regs);
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void __setup_vmap_stack(unsigned long off);
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void __vmap_exit(struct pt_regs *reg);
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struct pt_regs *switch_vmap_context(struct pt_regs *reg);
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void update_vmap_stack(int diff);
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int get_vmap_stack_size(void);
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int is_vmap_addr(unsigned long addr);
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void aml_stack_free(struct task_struct *tsk);
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void *aml_stack_alloc(int node, struct task_struct *tsk);
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void aml_account_task_stack(struct task_struct *tsk, int account);
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void vmap_report_meminfo(struct seq_file *m);
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#ifdef CONFIG_ARM
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int on_vmap_irq_stack(unsigned long sp, int cpu);
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void fixup_init_thread_union(void);
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unsigned long save_suspend_context(unsigned int *ptr);
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extern pgd_t *idmap_pgd;
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#endif
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struct page *check_pte_exist(unsigned long addr);
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#ifdef CONFIG_KASAN
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void clear_shadow(u64 start, u64 end);
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#endif
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#endif /* __VMAP_STACK_H__ */
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