[PATCH/RFT 5/5] CLOCK-Pro page replacement
From: Rik van Riel <hidden>
Date: 2005-08-10 20:10:36
Also in:
lkml
Export the active limit statistic through /proc. We may want to export some more CLOCK-Pro statistics in the future, but I'm not sure yet which ones. Signed-off-by: Rik van Riel Index: linux-2.6.12-vm/fs/proc/proc_misc.c ===================================================================
--- linux-2.6.12-vm.orig/fs/proc/proc_misc.c
+++ linux-2.6.12-vm/fs/proc/proc_misc.c@@ -125,11 +125,13 @@ static int meminfo_read_proc(char *page, unsigned long free; unsigned long committed; unsigned long allowed; + unsigned long active_limit; struct vmalloc_info vmi; long cached; get_page_state(&ps); get_zone_counts(&active, &inactive, &free); + active_limit = get_active_limit(); /* * display in kilobytes.
@@ -158,6 +160,7 @@ static int meminfo_read_proc(char *page, "SwapCached: %8lu kB\n" "Active: %8lu kB\n" "Inactive: %8lu kB\n" + "ActiveLimit: %8lu kB\n" "HighTotal: %8lu kB\n" "HighFree: %8lu kB\n" "LowTotal: %8lu kB\n"
@@ -181,6 +184,7 @@ static int meminfo_read_proc(char *page, K(total_swapcache_pages), K(active), K(inactive), + K(active_limit), K(i.totalhigh), K(i.freehigh), K(i.totalram-i.totalhigh),
Index: linux-2.6.12-vm/include/linux/swap.h ===================================================================
--- linux-2.6.12-vm.orig/include/linux/swap.h
+++ linux-2.6.12-vm/include/linux/swap.h@@ -161,6 +161,7 @@ extern void init_nonresident(void); /* linux/mm/clockpro.c */ extern void remember_page(struct page *, struct address_space *, unsigned long); extern int page_is_hot(struct page *, struct address_space *, unsigned long); +extern unsigned long get_active_limit(void); DECLARE_PER_CPU(unsigned long, evicted_pages); /* linux/mm/page_alloc.c */
Index: linux-2.6.12-vm/mm/clockpro.c ===================================================================
--- linux-2.6.12-vm.orig/mm/clockpro.c
+++ linux-2.6.12-vm/mm/clockpro.c@@ -100,3 +100,14 @@ void remember_page(struct page * page, s zone->active_limit < zone->present_pages * 7 / 8) zone->active_limit++; } + +unsigned long get_active_limit(void) +{ + unsigned long total = 0; + struct zone * zone; + + for_each_zone(zone) + total += zone->active_limit; + + return total; +} --
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