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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 /arch/ia64/kernel
parentf2c84c0e84bfa637a7161eac10157cf3b05b4a73 (diff)
[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 'arch/ia64/kernel')
-rw-r--r--arch/ia64/kernel/setup.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index fc56ca2da35..c9388a92cf4 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -454,6 +454,7 @@ setup_arch (char **cmdline_p)
#endif
cpu_init(); /* initialize the bootstrap CPU */
+ mmu_context_init(); /* initialize context_id bitmap */
#ifdef CONFIG_ACPI
acpi_boot_init();