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authorChristoph Lameter <clameter@sgi.com>2007-07-21 17:10:30 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-21 18:37:09 -0700
commit34feb2c83beb3bdf13535a36770f7e50b47ef299 (patch)
tree4abc3b0fe31495315f414677dcb5198967caa333 /arch
parentf0a7a5c93dfd1c0348dbbdb6f22cb82d99079c93 (diff)
x86_64: Quicklist support for x86_64
This adds caching of pgds and puds, pmds, pte. That way we can avoid costly zeroing and initialization of special mappings in the pgd. A second quicklist is useful to separate out PGD handling. We can carry the initialized pgds over to the next process needing them. Also clean up the pgd_list handling to use regular list macros. There is no need anymore to avoid the lru field. Move the add/removal of the pgds to the pgdlist into the constructor / destructor. That way the implementation is congruent with i386. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Luck, Tony" <tony.luck@intel.com> Acked-by: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/Kconfig8
-rw-r--r--arch/x86_64/kernel/process.c1
-rw-r--r--arch/x86_64/kernel/smp.c2
3 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index fca1a85042e..45f82ae6d38 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -60,6 +60,14 @@ config ZONE_DMA
bool
default y
+config QUICKLIST
+ bool
+ default y
+
+config NR_QUICK
+ int
+ default 2
+
config ISA
bool
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 5909039f37a..180f4c0fcbc 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -207,6 +207,7 @@ void cpu_idle (void)
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
+ check_pgt_cache();
rmb();
idle = pm_idle;
if (!idle)
diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index df4a82812ad..673a300b594 100644
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -241,7 +241,7 @@ void flush_tlb_mm (struct mm_struct * mm)
}
if (!cpus_empty(cpu_mask))
flush_tlb_others(cpu_mask, mm, FLUSH_ALL);
-
+ check_pgt_cache();
preempt_enable();
}
EXPORT_SYMBOL(flush_tlb_mm);