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ea094c64aa
PD#SWPL-16990 Problem: Lost RAM will be over 200MB when playing 4K. Solution: Add cma pages in /proc/meminfo and give a information for android layer to count them. Verify: x301 Change-Id: I99d1ded53ed351a5cb0d24f0e03850a55ef0d272 Signed-off-by: Tao Zeng <tao.zeng@amlogic.com>
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*
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* include/linux/amlogic/vmap_stack.h
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*
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* Copyright (C) 2017 Amlogic, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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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_AMLOGIC_KASAN32 /* 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_AMLOGIC_KASAN32 */
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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 7
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#else
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#define VMAP_CACHE_PAGE_ORDER 5
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#endif
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#define VMAP_CACHE_PAGE (1 << 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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spinlock_t vmap_lock;
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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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struct delayed_work mwork;
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spinlock_t page_lock;
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};
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#ifndef CONFIG_ARM64
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extern void *irq_stack[NR_CPUS];
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#endif
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extern int handle_vmap_fault(unsigned long addr,
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unsigned int esr, struct pt_regs *regs);
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extern bool on_vmap_stack(unsigned long sp, int cpu);
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extern void __setup_vmap_stack(unsigned long off);
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extern void update_vmap_stack(int diff);
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extern int get_vmap_stack_size(void);
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extern int is_vmap_addr(unsigned long addr);
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extern void aml_stack_free(struct task_struct *tsk);
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extern void *aml_stack_alloc(int node, struct task_struct *tsk);
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extern 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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extern int on_irq_stack(unsigned long sp, int cpu);
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#endif
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extern struct page *check_pte_exist(unsigned long addr);
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#endif /* __VMAP_STACK_H__ */
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