Messages in this thread Patch in this message | | | Subject | [RFC][PATCH 2/5] RSS accounting callbacks | Date | Mon, 5 Feb 2007 14:25:29 +0100 (CET) | From | (Patrick.Le-Dot) |
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Add callbacks to allocate and free instances of the controller.
Signed-off-by: Patrick Le Dot <Patrick.Le-Dot@bull.net> ---
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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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