---

yaml --- r: 71591 b: refs/heads/master c: 723ee05 h: refs/heads/master i: 71589: 7b4c3bb 71587: 383fc8d 71583: 498bd25 v: v3
git-mirror · Oct 19, 2007 · d5bf583 · d5bf583
1 parent b0988e7
commit d5bf583
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2843483d2eb02ad104edbe8b2429fb6a39d25063
+refs/heads/master: 723ee050aa2dd4aa483bdb30413dcd7d48829783
diff --git a/trunk/Documentation/DocBook/kernel-api.tmpl b/trunk/Documentation/DocBook/kernel-api.tmpl
@@ -46,7 +46,7 @@
 
      <sect1><title>Atomic and pointer manipulation</title>
 !Iinclude/asm-x86/atomic_32.h
-!Iinclude/asm-x86/unaligned.h
+!Iinclude/asm-x86/unaligned_32.h
      </sect1>
 
      <sect1><title>Delaying, scheduling, and timer routines</title>

diff --git a/trunk/Documentation/accounting/cgroupstats.txt b/trunk/Documentation/accounting/cgroupstats.txt
diff --git a/trunk/Documentation/cachetlb.txt b/trunk/Documentation/cachetlb.txt
@@ -87,7 +87,30 @@ changes occur:
 
 	This is used primarily during fault processing.
 
-5) void update_mmu_cache(struct vm_area_struct *vma,
+5) void flush_tlb_pgtables(struct mm_struct *mm,
+			   unsigned long start, unsigned long end)
+
+   The software page tables for address space 'mm' for virtual
+   addresses in the range 'start' to 'end-1' are being torn down.
+
+   Some platforms cache the lowest level of the software page tables
+   in a linear virtually mapped array, to make TLB miss processing
+   more efficient.  On such platforms, since the TLB is caching the
+   software page table structure, it needs to be flushed when parts
+   of the software page table tree are unlinked/freed.
+
+   Sparc64 is one example of a platform which does this.
+
+   Usually, when munmap()'ing an area of user virtual address
+   space, the kernel leaves the page table parts around and just
+   marks the individual pte's as invalid.  However, if very large
+   portions of the address space are unmapped, the kernel frees up
+   those portions of the software page tables to prevent potential
+   excessive kernel memory usage caused by erratic mmap/mmunmap
+   sequences.  It is at these times that flush_tlb_pgtables will
+   be invoked.
+
+6) void update_mmu_cache(struct vm_area_struct *vma,
 			 unsigned long address, pte_t pte)
 
 	At the end of every page fault, this routine is invoked to
@@ -100,7 +123,7 @@ changes occur:
 	translations for software managed TLB configurations.
 	The sparc64 port currently does this.
 
-6) void tlb_migrate_finish(struct mm_struct *mm)
+7) void tlb_migrate_finish(struct mm_struct *mm)
 
 	This interface is called at the end of an explicit
 	process migration. This interface provides a hook