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authorPeter Keilty <peter.keilty@hp.com>2005-10-31 16:44:47 -0500
committerTony Luck <tony.luck@intel.com>2005-10-31 14:36:05 -0800
commitdcc17d1baef3721d1574e5b2f4f2d4607514bcff (patch)
tree78b19a9b54f57aa010f50201e7639786b0e5f770 /include/asm-ia64/tlbflush.h
parentf2c84c0e84bfa637a7161eac10157cf3b05b4a73 (diff)
downloadop-kernel-dev-dcc17d1baef3721d1574e5b2f4f2d4607514bcff.zip
op-kernel-dev-dcc17d1baef3721d1574e5b2f4f2d4607514bcff.tar.gz
[IA64] Use bitmaps for efficient context allocation/free
Corrects the very inefficent method of finding free context_ids in get_mmu_context(). Instead of walking the task_list of all processes, 2 bitmaps are used to efficently store and lookup state, inuse and needs flushing. The entire rid address space is now used before calling wrap_mmu_context and global tlb flushing. Special thanks to Ken and Rohit for their review and modifications in using a bit flushmap. Signed-off-by: Peter Keilty <peter.keilty@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/tlbflush.h')
-rw-r--r--include/asm-ia64/tlbflush.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-ia64/tlbflush.h b/include/asm-ia64/tlbflush.h
index b65c627..a35b323 100644
--- a/include/asm-ia64/tlbflush.h
+++ b/include/asm-ia64/tlbflush.h
@@ -51,6 +51,7 @@ flush_tlb_mm (struct mm_struct *mm)
if (!mm)
return;
+ set_bit(mm->context, ia64_ctx.flushmap);
mm->context = 0;
if (atomic_read(&mm->mm_users) == 0)
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