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| author | Peter Keilty <peter.keilty@hp.com> | 2005-10-31 16:44:47 -0500 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-10-31 14:36:05 -0800 |
| commit | dcc17d1baef3721d1574e5b2f4f2d4607514bcff (patch) | |
| tree | 78b19a9b54f57aa010f50201e7639786b0e5f770 /include/asm-ia64/tlbflush.h | |
| parent | f2c84c0e84bfa637a7161eac10157cf3b05b4a73 (diff) | |
| download | lwn-dcc17d1baef3721d1574e5b2f4f2d4607514bcff.tar.gz lwn-dcc17d1baef3721d1574e5b2f4f2d4607514bcff.zip | |
[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.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-ia64/tlbflush.h b/include/asm-ia64/tlbflush.h index b65c62702724..a35b323bae4c 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) |