Adds some /proc debugging information to the CART patch.
Signed-off-by: Peter Zijlstra <[email protected]>
fs/proc/proc_misc.c | 15 ++++++++
mm/cart.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 108 insertions(+)
Index: linux-2.6-git/fs/proc/proc_misc.c
===================================================================
--- linux-2.6-git.orig/fs/proc/proc_misc.c
+++ linux-2.6-git/fs/proc/proc_misc.c
@@ -233,6 +233,20 @@ static struct file_operations proc_zonei
.release = seq_release,
};
+extern struct seq_operations cart_op;
+static int cart_open(struct inode *inode, struct file *file)
+{
+ (void)inode;
+ return seq_open(file, &cart_op);
+}
+
+static struct file_operations cart_file_operations = {
+ .open = cart_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
extern struct seq_operations nonresident_op;
static int nonresident_open(struct inode *inode, struct file *file)
{
@@ -616,6 +630,7 @@ void __init proc_misc_init(void)
create_seq_entry("interrupts", 0, &proc_interrupts_operations);
create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
+ create_seq_entry("cart",S_IRUGO, &cart_file_operations);
create_seq_entry("nonresident",S_IRUGO, &nonresident_file_operations);
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
Index: linux-2.6-git/mm/cart.c
===================================================================
--- linux-2.6-git.orig/mm/cart.c
+++ linux-2.6-git/mm/cart.c
@@ -675,3 +675,96 @@ void __cart_remember(struct zone *zone,
break;
}
}
+
+#ifdef CONFIG_PROC_FS
+
+#include <linux/seq_file.h>
+
+static void *stats_start(struct seq_file *m, loff_t *pos)
+{
+ if (*pos != 0)
+ return NULL;
+
+ lru_add_drain();
+
+ return pos;
+}
+
+static void *stats_next(struct seq_file *m, void *arg, loff_t *pos)
+{
+ return NULL;
+}
+
+static void stats_stop(struct seq_file *m, void *arg)
+{
+}
+
+static int stats_show(struct seq_file *m, void *arg)
+{
+ struct zone *zone;
+ for_each_zone(zone) {
+ spin_lock_irq(&zone->lru_lock);
+ seq_printf(m, "\n\n======> zone: %lu <=====\n", (unsigned long)zone);
+ seq_printf(m, "struct zone values:\n");
+ seq_printf(m, " zone->nr_active: %lu\n", zone->nr_active);
+ seq_printf(m, " zone->nr_inactive: %lu\n", zone->nr_inactive);
+ seq_printf(m, " zone->nr_evicted_active: %lu\n", zone->nr_evicted_active);
+ seq_printf(m, " zone->nr_evicted_inactive: %lu\n", zone->nr_evicted_inactive);
+ seq_printf(m, " zone->nr_shortterm: %lu\n", zone->nr_shortterm);
+ seq_printf(m, " zone->cart_p: %lu\n", zone->nr_p);
+ seq_printf(m, " zone->cart_q: %lu\n", zone->nr_q);
+ seq_printf(m, " zone->cart_r: %lu\n", zone->nr_r);
+ seq_printf(m, " zone->present_pages: %lu\n", zone->present_pages);
+ seq_printf(m, " zone->free_pages: %lu\n", zone->free_pages);
+ seq_printf(m, " zone->pages_min: %lu\n", zone->pages_min);
+ seq_printf(m, " zone->pages_low: %lu\n", zone->pages_low);
+ seq_printf(m, " zone->pages_high: %lu\n", zone->pages_high);
+
+ seq_printf(m, "\n");
+ seq_printf(m, "implicit values:\n");
+ seq_printf(m, " zone->nr_longterm: %lu\n", nr_Nl);
+ seq_printf(m, " zone->cart_cT: %lu\n", cart_cT);
+ seq_printf(m, " zone->cart_cB: %lu\n", cart_cB);
+
+ seq_printf(m, "\n");
+ seq_printf(m, "counted values:\n");
+
+ {
+ struct page *page;
+ unsigned long active = 0, s1 = 0, l1 = 0;
+ unsigned long inactive = 0, s2 = 0, l2 = 0;
+ unsigned long a1=0,i1=0,a2=0,i2=0;
+ list_for_each_entry(page, &zone->active_list, lru) {
+ ++active;
+ if (PageLongTerm(page)) ++l1;
+ else ++s1;
+ if (PageActive(page)) ++a1;
+ else ++i1;
+ }
+ list_for_each_entry(page, &zone->inactive_list, lru) {
+ ++inactive;
+ if (PageLongTerm(page)) ++l2;
+ else ++s2;
+ if (PageActive(page)) ++a2;
+ else ++i2;
+ }
+ seq_printf(m, " zone->nr_active: %lu (%lu, %lu)(%lu, %lu)\n", active, s1, l1, a1, i1);
+ seq_printf(m, " zone->nr_inactive: %lu (%lu, %lu)(%lu, %lu)\n", inactive, s2, l2, a2, i2);
+ seq_printf(m, " zone->nr_shortterm: %lu\n", s1+s2);
+ seq_printf(m, " zone->nr_longterm: %lu\n", l1+l2);
+ }
+
+ spin_unlock_irq(&zone->lru_lock);
+ }
+
+ return 0;
+}
+
+struct seq_operations cart_op = {
+ .start = stats_start,
+ .next = stats_next,
+ .stop = stats_stop,
+ .show = stats_show,
+};
+
+#endif /* CONFIG_PROC_FS */
--
-
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