Add callbacks to allocate and free instances of the controller.
Signed-off-by: Patrick Le Dot <[EMAIL PROTECTED]>
---
kernel/res_group/memctlr.c | 57 ++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 54 insertions(+), 3 deletions(-)
diff -puN a/kernel/res_group/memctlr.c b/kernel/res_group/memctlr.c
--- a/kernel/res_group/memctlr.c 2006-12-08 09:34:49.000000000 +0100
+++ b/kernel/res_group/memctlr.c 2006-12-08 09:44:15.000000000 +0100
@@ -37,6 +37,8 @@
static const char res_ctlr_name[] = "memctlr";
static struct resource_group *root_rgroup;
+static const char version[] = "0.01";
+static struct memctlr *memctlr_root;
/*
* this struct is used in mm_struct
@@ -68,14 +70,63 @@ static struct memctlr *get_memctlr(struc
&memctlr_rg));
}
+static void memctlr_init_new(struct memctlr *res)
+{
+ res->shares.min_shares = SHARE_DONT_CARE;
+ res->shares.max_shares = SHARE_DONT_CARE;
+ res->shares.child_shares_divisor = SHARE_DEFAULT_DIVISOR;
+ res->shares.unused_min_shares = SHARE_DEFAULT_DIVISOR;
+}
+
+static struct res_shares *memctlr_alloc_instance(struct resource_group *rgroup)
+{
+ struct memctlr *res;
+
+ res = kzalloc(sizeof(struct memctlr), GFP_KERNEL);
+ if (!res)
+ return NULL;
+ memctlr_init_new(res);
+ if (is_res_group_root(rgroup)) {
+ root_rgroup = rgroup;
+ memctlr_root = res;
+ printk("Memory Controller version %s\n", version);
+ }
+ return &res->shares;
+}
+
+static void memctlr_free_instance(struct res_shares *shares)
+{
+ struct memctlr *res;
+
+ res = get_memctlr_from_shares(shares);
+ BUG_ON(!res);
+ /*
+ * Containers do not allow removal of groups that have tasks
+ * associated with them. To free a container, it must be empty.
+ * Handle transfer of charges in the move_task notification
+ */
+ kfree(res);
+}
+
+static ssize_t memctlr_show_stats(struct res_shares *shares, char *buf,
+ size_t len)
+{
+ int i = 0;
+
+ i += snprintf(buf, len, "Accounting will be added soon\n");
+ buf += i;
+ len -= i;
+ return i;
+}
+
struct res_controller memctlr_rg = {
.name = res_ctlr_name,
.ctlr_id = NO_RES_ID,
- .alloc_shares_struct = NULL,
- .free_shares_struct = NULL,
+ .alloc_shares_struct = memctlr_alloc_instance,
+ .free_shares_struct = memctlr_free_instance,
.move_task = NULL,
.shares_changed = NULL,
- .show_stats = NULL,
+ .show_stats = memctlr_show_stats,
};
int __init memctlr_init(void)
-------------------------------------------------------------------------
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