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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-05 08:05:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-05 08:05:29 -0700
commita0abcf2e8f8017051830f738ac1bf5ef42703243 (patch)
treeef6ff14b5eb9cf14cd135c0f0f09fa0944192ef0 /include
parent2071b3e34fd33e496ebd7b90331ac5b3b0ac3b81 (diff)
parentc191920f737a09a7252088f018f6747f0d2f484d (diff)
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x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET x86, vdso: Remove vestiges of VDSO_PRELINK and some outdated comments x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO x86, vdso: Move the 32-bit vdso special pages after the text x86, vdso: Reimplement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.h10
-rw-r--r--include/linux/mm_types.h6
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 */