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https://github.com/torvalds/linux.git
synced 2026-09-25 21:21:09 -04:00
Patrick Wang
c200d90049
Patch series "mm: kmemleak: store objects allocated with physical address separately and check when scan", v4. The kmemleak_*_phys() interface uses "min_low_pfn" and "max_low_pfn" to check address. But on some architectures, kmemleak_*_phys() is called before those two variables initialized. The following steps will be taken: 1) Add OBJECT_PHYS flag and rbtree for the objects allocated with physical address 2) Store physical address in objects if allocated with OBJECT_PHYS 3) Check the boundary when scan instead of in kmemleak_*_phys() This patch set will solve: https://lore.kernel.org/r/[email protected] https://lore.kernel.org/r/[email protected] v3: https://lore.kernel.org/r/[email protected] v2: https://lore.kernel.org/r/[email protected] v1: https://lore.kernel.org/r/[email protected] This patch (of 4): Remove the unused kmemleak_not_leak_phys() function. And remove the min_count argument to kmemleak_alloc_phys() function, assume it's 0. Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Patrick Wang <[email protected]> Suggested-by: Catalin Marinas <[email protected]> Reviewed-by: Catalin Marinas <[email protected]> Cc: Yee Lee <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* include/linux/kmemleak.h
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*
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* Copyright (C) 2008 ARM Limited
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* Written by Catalin Marinas <[email protected]>
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*/
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#ifndef __KMEMLEAK_H
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#define __KMEMLEAK_H
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#ifdef CONFIG_DEBUG_KMEMLEAK
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extern void kmemleak_init(void) __init;
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extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
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gfp_t gfp) __ref;
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extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
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gfp_t gfp) __ref;
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extern void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
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gfp_t gfp) __ref;
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extern void kmemleak_free(const void *ptr) __ref;
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extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
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extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
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extern void kmemleak_update_trace(const void *ptr) __ref;
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extern void kmemleak_not_leak(const void *ptr) __ref;
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extern void kmemleak_ignore(const void *ptr) __ref;
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extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
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extern void kmemleak_no_scan(const void *ptr) __ref;
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extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
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gfp_t gfp) __ref;
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extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
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extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
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static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
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int min_count, slab_flags_t flags,
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gfp_t gfp)
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{
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if (!(flags & SLAB_NOLEAKTRACE))
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kmemleak_alloc(ptr, size, min_count, gfp);
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}
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static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
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{
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if (!(flags & SLAB_NOLEAKTRACE))
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kmemleak_free(ptr);
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}
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static inline void kmemleak_erase(void **ptr)
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{
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*ptr = NULL;
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}
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#else
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static inline void kmemleak_init(void)
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{
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}
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static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
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gfp_t gfp)
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{
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}
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static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
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int min_count, slab_flags_t flags,
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gfp_t gfp)
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{
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}
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static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
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gfp_t gfp)
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{
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}
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static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
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gfp_t gfp)
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{
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}
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static inline void kmemleak_free(const void *ptr)
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{
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}
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static inline void kmemleak_free_part(const void *ptr, size_t size)
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{
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}
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static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
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{
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}
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static inline void kmemleak_free_percpu(const void __percpu *ptr)
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{
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}
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static inline void kmemleak_update_trace(const void *ptr)
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{
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}
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static inline void kmemleak_not_leak(const void *ptr)
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{
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}
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static inline void kmemleak_ignore(const void *ptr)
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{
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}
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static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
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{
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}
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static inline void kmemleak_erase(void **ptr)
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{
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}
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static inline void kmemleak_no_scan(const void *ptr)
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{
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}
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static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
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gfp_t gfp)
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{
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}
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static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
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{
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}
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static inline void kmemleak_ignore_phys(phys_addr_t phys)
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{
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}
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#endif /* CONFIG_DEBUG_KMEMLEAK */
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#endif /* __KMEMLEAK_H */
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