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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-05 17:05:29 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-05 17:05:29 +0200 |
| commit | a0abcf2e8f8017051830f738ac1bf5ef42703243 (patch) | |
| tree | ef6ff14b5eb9cf14cd135c0f0f09fa0944192ef0 /include | |
| parent | Merge branch 'x86/espfix' of git://git.kernel.org/pub/scm/linux/kernel/git/ti... (diff) | |
| parent | x86/vdso, build: Make LE access macros clearer, host-safe (diff) | |
| download | linux-a0abcf2e8f8017051830f738ac1bf5ef42703243.tar.xz linux-a0abcf2e8f8017051830f738ac1bf5ef42703243.zip | |
Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull x86 cdso updates from Peter Anvin:
"Vdso cleanups and improvements largely from Andy Lutomirski. This
makes the vdso a lot less ''special''"
* 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso, build: Make LE access macros clearer, host-safe
x86/vdso, build: Fix cross-compilation from big-endian architectures
x86/vdso, build: When vdso2c fails, unlink the output
x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
x86, mm: Replace arch_vma_name with vm_ops->name for vsyscalls
x86, mm: Improve _install_special_mapping and fix x86 vdso naming
mm, fs: Add vm_ops->name as an alternative to arch_vma_name
x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
x86, vdso: Remove vestiges of VDSO_PRELINK and some outdated comments
x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO
x86, vdso: Move the 32-bit vdso special pages after the text
x86, vdso: Reimplement vdso.so preparation in build-time C
x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c
x86, vdso: Clean up 32-bit vs 64-bit vdso params
x86, mm: Ensure correct alignment of the fixmap
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 10 | ||||
| -rw-r--r-- | include/linux/mm_types.h | 6 |
2 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 368600628d14..e03dd29145a0 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -239,6 +239,12 @@ struct vm_operations_struct { */ int (*access)(struct vm_area_struct *vma, unsigned long addr, void *buf, int len, int write); + + /* Called by the /proc/PID/maps code to ask the vma whether it + * has a special name. Returning non-NULL will also cause this + * vma to be dumped unconditionally. */ + const char *(*name)(struct vm_area_struct *vma); + #ifdef CONFIG_NUMA /* * set_policy() op must add a reference to any non-NULL @new mempolicy @@ -1783,7 +1789,9 @@ extern struct file *get_mm_exe_file(struct mm_struct *mm); extern int may_expand_vm(struct mm_struct *mm, unsigned long npages); extern struct vm_area_struct *_install_special_mapping(struct mm_struct *mm, unsigned long addr, unsigned long len, - unsigned long flags, struct page **pages); + unsigned long flags, + const struct vm_special_mapping *spec); +/* This is an obsolete alternative to _install_special_mapping. */ extern int install_special_mapping(struct mm_struct *mm, unsigned long addr, unsigned long len, unsigned long flags, struct page **pages); diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index de1627232af0..96c5750e3110 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -510,4 +510,10 @@ static inline void clear_tlb_flush_pending(struct mm_struct *mm) } #endif +struct vm_special_mapping +{ + const char *name; + struct page **pages; +}; + #endif /* _LINUX_MM_TYPES_H */ |