Commit 72835c86 authored by Johannes Weiner's avatar Johannes Weiner Committed by Linus Torvalds

mm: unify remaining mem_cont, mem, etc. variable names to memcg

Signed-off-by: default avatarJohannes Weiner <jweiner@redhat.com>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Acked-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.cz>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ec0fffd8
......@@ -54,10 +54,10 @@ extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
/* for swap handling */
extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
struct page *page, gfp_t mask, struct mem_cgroup **ptr);
struct page *page, gfp_t mask, struct mem_cgroup **memcgp);
extern void mem_cgroup_commit_charge_swapin(struct page *page,
struct mem_cgroup *ptr);
extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr);
struct mem_cgroup *memcg);
extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg);
extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
......@@ -101,7 +101,7 @@ extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg);
extern int
mem_cgroup_prepare_migration(struct page *page,
struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask);
struct page *newpage, struct mem_cgroup **memcgp, gfp_t gfp_mask);
extern void mem_cgroup_end_migration(struct mem_cgroup *memcg,
struct page *oldpage, struct page *newpage, bool migration_ok);
......@@ -186,17 +186,17 @@ static inline int mem_cgroup_cache_charge(struct page *page,
}
static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr)
struct page *page, gfp_t gfp_mask, struct mem_cgroup **memcgp)
{
return 0;
}
static inline void mem_cgroup_commit_charge_swapin(struct page *page,
struct mem_cgroup *ptr)
struct mem_cgroup *memcg)
{
}
static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr)
static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg)
{
}
......@@ -275,7 +275,7 @@ static inline struct cgroup_subsys_state
static inline int
mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
struct mem_cgroup **ptr, gfp_t gfp_mask)
struct mem_cgroup **memcgp, gfp_t gfp_mask)
{
return 0;
}
......
......@@ -43,7 +43,7 @@ enum oom_constraint {
extern void compare_swap_oom_score_adj(int old_val, int new_val);
extern int test_set_oom_score_adj(int new_val);
extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *memcg,
const nodemask_t *nodemask, unsigned long totalpages);
extern int try_set_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
extern void clear_zonelist_oom(struct zonelist *zonelist, gfp_t gfp_flags);
......
......@@ -158,7 +158,7 @@ static inline void page_dup_rmap(struct page *page)
* Called from mm/vmscan.c to handle paging out
*/
int page_referenced(struct page *, int is_locked,
struct mem_cgroup *cnt, unsigned long *vm_flags);
struct mem_cgroup *memcg, unsigned long *vm_flags);
int page_referenced_one(struct page *, struct vm_area_struct *,
unsigned long address, unsigned int *mapcount, unsigned long *vm_flags);
......@@ -236,7 +236,7 @@ int rmap_walk(struct page *page, int (*rmap_one)(struct page *,
#define anon_vma_link(vma) do {} while (0)
static inline int page_referenced(struct page *page, int is_locked,
struct mem_cgroup *cnt,
struct mem_cgroup *memcg,
unsigned long *vm_flags)
{
*vm_flags = 0;
......
......@@ -2844,12 +2844,12 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
*/
int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
struct page *page,
gfp_t mask, struct mem_cgroup **ptr)
gfp_t mask, struct mem_cgroup **memcgp)
{
struct mem_cgroup *memcg;
int ret;
*ptr = NULL;
*memcgp = NULL;
if (mem_cgroup_disabled())
return 0;
......@@ -2867,27 +2867,27 @@ int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
memcg = try_get_mem_cgroup_from_page(page);
if (!memcg)
goto charge_cur_mm;
*ptr = memcg;
ret = __mem_cgroup_try_charge(NULL, mask, 1, ptr, true);
*memcgp = memcg;
ret = __mem_cgroup_try_charge(NULL, mask, 1, memcgp, true);
css_put(&memcg->css);
return ret;
charge_cur_mm:
if (unlikely(!mm))
mm = &init_mm;
return __mem_cgroup_try_charge(mm, mask, 1, ptr, true);
return __mem_cgroup_try_charge(mm, mask, 1, memcgp, true);
}
static void
__mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr,
__mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *memcg,
enum charge_type ctype)
{
if (mem_cgroup_disabled())
return;
if (!ptr)
if (!memcg)
return;
cgroup_exclude_rmdir(&ptr->css);
cgroup_exclude_rmdir(&memcg->css);
__mem_cgroup_commit_charge_lrucare(page, ptr, ctype);
__mem_cgroup_commit_charge_lrucare(page, memcg, ctype);
/*
* Now swap is on-memory. This means this page may be
* counted both as mem and swap....double count.
......@@ -2897,21 +2897,22 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr,
*/
if (do_swap_account && PageSwapCache(page)) {
swp_entry_t ent = {.val = page_private(page)};
struct mem_cgroup *swap_memcg;
unsigned short id;
struct mem_cgroup *memcg;
id = swap_cgroup_record(ent, 0);
rcu_read_lock();
memcg = mem_cgroup_lookup(id);
if (memcg) {
swap_memcg = mem_cgroup_lookup(id);
if (swap_memcg) {
/*
* This recorded memcg can be obsolete one. So, avoid
* calling css_tryget
*/
if (!mem_cgroup_is_root(memcg))
res_counter_uncharge(&memcg->memsw, PAGE_SIZE);
mem_cgroup_swap_statistics(memcg, false);
mem_cgroup_put(memcg);
if (!mem_cgroup_is_root(swap_memcg))
res_counter_uncharge(&swap_memcg->memsw,
PAGE_SIZE);
mem_cgroup_swap_statistics(swap_memcg, false);
mem_cgroup_put(swap_memcg);
}
rcu_read_unlock();
}
......@@ -2920,13 +2921,14 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr,
* So, rmdir()->pre_destroy() can be called while we do this charge.
* In that case, we need to call pre_destroy() again. check it here.
*/
cgroup_release_and_wakeup_rmdir(&ptr->css);
cgroup_release_and_wakeup_rmdir(&memcg->css);
}
void mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr)
void mem_cgroup_commit_charge_swapin(struct page *page,
struct mem_cgroup *memcg)
{
__mem_cgroup_commit_charge_swapin(page, ptr,
MEM_CGROUP_CHARGE_TYPE_MAPPED);
__mem_cgroup_commit_charge_swapin(page, memcg,
MEM_CGROUP_CHARGE_TYPE_MAPPED);
}
void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg)
......@@ -3255,14 +3257,14 @@ static inline int mem_cgroup_move_swap_account(swp_entry_t entry,
* page belongs to.
*/
int mem_cgroup_prepare_migration(struct page *page,
struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask)
struct page *newpage, struct mem_cgroup **memcgp, gfp_t gfp_mask)
{
struct mem_cgroup *memcg = NULL;
struct page_cgroup *pc;
enum charge_type ctype;
int ret = 0;
*ptr = NULL;
*memcgp = NULL;
VM_BUG_ON(PageTransHuge(page));
if (mem_cgroup_disabled())
......@@ -3313,10 +3315,10 @@ int mem_cgroup_prepare_migration(struct page *page,
if (!memcg)
return 0;
*ptr = memcg;
ret = __mem_cgroup_try_charge(NULL, gfp_mask, 1, ptr, false);
*memcgp = memcg;
ret = __mem_cgroup_try_charge(NULL, gfp_mask, 1, memcgp, false);
css_put(&memcg->css);/* drop extra refcnt */
if (ret || *ptr == NULL) {
if (ret || *memcgp == NULL) {
if (PageAnon(page)) {
lock_page_cgroup(pc);
ClearPageCgroupMigration(pc);
......
......@@ -152,7 +152,7 @@ struct task_struct *find_lock_task_mm(struct task_struct *p)
/* return true if the task is not adequate as candidate victim task. */
static bool oom_unkillable_task(struct task_struct *p,
const struct mem_cgroup *mem, const nodemask_t *nodemask)
const struct mem_cgroup *memcg, const nodemask_t *nodemask)
{
if (is_global_init(p))
return true;
......@@ -160,7 +160,7 @@ static bool oom_unkillable_task(struct task_struct *p,
return true;
/* When mem_cgroup_out_of_memory() and p is not member of the group */
if (mem && !task_in_mem_cgroup(p, mem))
if (memcg && !task_in_mem_cgroup(p, memcg))
return true;
/* p may not have freeable memory in nodemask */
......@@ -179,12 +179,12 @@ static bool oom_unkillable_task(struct task_struct *p,
* predictable as possible. The goal is to return the highest value for the
* task consuming the most memory to avoid subsequent oom failures.
*/
unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *memcg,
const nodemask_t *nodemask, unsigned long totalpages)
{
long points;
if (oom_unkillable_task(p, mem, nodemask))
if (oom_unkillable_task(p, memcg, nodemask))
return 0;
p = find_lock_task_mm(p);
......@@ -308,7 +308,7 @@ static enum oom_constraint constrained_alloc(struct zonelist *zonelist,
* (not docbooked, we don't want this one cluttering up the manual)
*/
static struct task_struct *select_bad_process(unsigned int *ppoints,
unsigned long totalpages, struct mem_cgroup *mem,
unsigned long totalpages, struct mem_cgroup *memcg,
const nodemask_t *nodemask)
{
struct task_struct *g, *p;
......@@ -320,7 +320,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
if (p->exit_state)
continue;
if (oom_unkillable_task(p, mem, nodemask))
if (oom_unkillable_task(p, memcg, nodemask))
continue;
/*
......@@ -364,7 +364,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
}
}
points = oom_badness(p, mem, nodemask, totalpages);
points = oom_badness(p, memcg, nodemask, totalpages);
if (points > *ppoints) {
chosen = p;
*ppoints = points;
......@@ -387,14 +387,14 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
*
* Call with tasklist_lock read-locked.
*/
static void dump_tasks(const struct mem_cgroup *mem, const nodemask_t *nodemask)
static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemask)
{
struct task_struct *p;
struct task_struct *task;
pr_info("[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name\n");
for_each_process(p) {
if (oom_unkillable_task(p, mem, nodemask))
if (oom_unkillable_task(p, memcg, nodemask))
continue;
task = find_lock_task_mm(p);
......@@ -417,7 +417,7 @@ static void dump_tasks(const struct mem_cgroup *mem, const nodemask_t *nodemask)
}
static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order,
struct mem_cgroup *mem, const nodemask_t *nodemask)
struct mem_cgroup *memcg, const nodemask_t *nodemask)
{
task_lock(current);
pr_warning("%s invoked oom-killer: gfp_mask=0x%x, order=%d, "
......@@ -427,10 +427,10 @@ static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order,
cpuset_print_task_mems_allowed(current);
task_unlock(current);
dump_stack();
mem_cgroup_print_oom_info(mem, p);
mem_cgroup_print_oom_info(memcg, p);
show_mem(SHOW_MEM_FILTER_NODES);
if (sysctl_oom_dump_tasks)
dump_tasks(mem, nodemask);
dump_tasks(memcg, nodemask);
}
#define K(x) ((x) << (PAGE_SHIFT-10))
......@@ -484,7 +484,7 @@ static int oom_kill_task(struct task_struct *p)
static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
unsigned int points, unsigned long totalpages,
struct mem_cgroup *mem, nodemask_t *nodemask,
struct mem_cgroup *memcg, nodemask_t *nodemask,
const char *message)
{
struct task_struct *victim = p;
......@@ -493,7 +493,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
unsigned int victim_points = 0;
if (printk_ratelimit())
dump_header(p, gfp_mask, order, mem, nodemask);
dump_header(p, gfp_mask, order, memcg, nodemask);
/*
* If the task is already exiting, don't alarm the sysadmin or kill
......@@ -524,7 +524,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
/*
* oom_badness() returns 0 if the thread is unkillable
*/
child_points = oom_badness(child, mem, nodemask,
child_points = oom_badness(child, memcg, nodemask,
totalpages);
if (child_points > victim_points) {
victim = child;
......@@ -561,7 +561,7 @@ static void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask,
}
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask)
void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask)
{
unsigned long limit;
unsigned int points = 0;
......@@ -578,14 +578,14 @@ void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask)
}
check_panic_on_oom(CONSTRAINT_MEMCG, gfp_mask, 0, NULL);
limit = mem_cgroup_get_limit(mem) >> PAGE_SHIFT;
limit = mem_cgroup_get_limit(memcg) >> PAGE_SHIFT;
read_lock(&tasklist_lock);
retry:
p = select_bad_process(&points, limit, mem, NULL);
p = select_bad_process(&points, limit, memcg, NULL);
if (!p || PTR_ERR(p) == -1UL)
goto out;
if (oom_kill_process(p, gfp_mask, 0, points, limit, mem, NULL,
if (oom_kill_process(p, gfp_mask, 0, points, limit, memcg, NULL,
"Memory cgroup out of memory"))
goto retry;
out:
......
......@@ -773,7 +773,7 @@ int page_referenced_one(struct page *page, struct vm_area_struct *vma,
}
static int page_referenced_anon(struct page *page,
struct mem_cgroup *mem_cont,
struct mem_cgroup *memcg,
unsigned long *vm_flags)
{
unsigned int mapcount;
......@@ -796,7 +796,7 @@ static int page_referenced_anon(struct page *page,
* counting on behalf of references from different
* cgroups
*/
if (mem_cont && !mm_match_cgroup(vma->vm_mm, mem_cont))
if (memcg && !mm_match_cgroup(vma->vm_mm, memcg))
continue;
referenced += page_referenced_one(page, vma, address,
&mapcount, vm_flags);
......@@ -811,7 +811,7 @@ static int page_referenced_anon(struct page *page,
/**
* page_referenced_file - referenced check for object-based rmap
* @page: the page we're checking references on.
* @mem_cont: target memory controller
* @memcg: target memory control group
* @vm_flags: collect encountered vma->vm_flags who actually referenced the page
*
* For an object-based mapped page, find all the places it is mapped and
......@@ -822,7 +822,7 @@ static int page_referenced_anon(struct page *page,
* This function is only called from page_referenced for object-based pages.
*/
static int page_referenced_file(struct page *page,
struct mem_cgroup *mem_cont,
struct mem_cgroup *memcg,
unsigned long *vm_flags)
{
unsigned int mapcount;
......@@ -864,7 +864,7 @@ static int page_referenced_file(struct page *page,
* counting on behalf of references from different
* cgroups
*/
if (mem_cont && !mm_match_cgroup(vma->vm_mm, mem_cont))
if (memcg && !mm_match_cgroup(vma->vm_mm, memcg))
continue;
referenced += page_referenced_one(page, vma, address,
&mapcount, vm_flags);
......@@ -880,7 +880,7 @@ static int page_referenced_file(struct page *page,
* page_referenced - test if the page was referenced
* @page: the page to test
* @is_locked: caller holds lock on the page
* @mem_cont: target memory controller
* @memcg: target memory cgroup
* @vm_flags: collect encountered vma->vm_flags who actually referenced the page
*
* Quick test_and_clear_referenced for all mappings to a page,
......@@ -888,7 +888,7 @@ static int page_referenced_file(struct page *page,
*/
int page_referenced(struct page *page,
int is_locked,
struct mem_cgroup *mem_cont,
struct mem_cgroup *memcg,
unsigned long *vm_flags)
{
int referenced = 0;
......@@ -904,13 +904,13 @@ int page_referenced(struct page *page,
}
}
if (unlikely(PageKsm(page)))
referenced += page_referenced_ksm(page, mem_cont,
referenced += page_referenced_ksm(page, memcg,
vm_flags);
else if (PageAnon(page))
referenced += page_referenced_anon(page, mem_cont,
referenced += page_referenced_anon(page, memcg,
vm_flags);
else if (page->mapping)
referenced += page_referenced_file(page, mem_cont,
referenced += page_referenced_file(page, memcg,
vm_flags);
if (we_locked)
unlock_page(page);
......
......@@ -847,12 +847,13 @@ unsigned int count_swap_pages(int type, int free)
static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, swp_entry_t entry, struct page *page)
{
struct mem_cgroup *ptr;
struct mem_cgroup *memcg;
spinlock_t *ptl;
pte_t *pte;
int ret = 1;
if (mem_cgroup_try_charge_swapin(vma->vm_mm, page, GFP_KERNEL, &ptr)) {
if (mem_cgroup_try_charge_swapin(vma->vm_mm, page,
GFP_KERNEL, &memcg)) {
ret = -ENOMEM;
goto out_nolock;
}
......@@ -860,7 +861,7 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd,
pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
if (unlikely(!pte_same(*pte, swp_entry_to_pte(entry)))) {
if (ret > 0)
mem_cgroup_cancel_charge_swapin(ptr);
mem_cgroup_cancel_charge_swapin(memcg);
ret = 0;
goto out;
}
......@@ -871,7 +872,7 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd,
set_pte_at(vma->vm_mm, addr, pte,
pte_mkold(mk_pte(page, vma->vm_page_prot)));
page_add_anon_rmap(page, vma, addr);
mem_cgroup_commit_charge_swapin(page, ptr);
mem_cgroup_commit_charge_swapin(page, memcg);
swap_free(entry);
/*
* Move the page to the active list so it is not
......
......@@ -2376,7 +2376,7 @@ unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *memcg,
gfp_t gfp_mask, bool noswap,
struct zone *zone,
unsigned long *nr_scanned)
......@@ -2388,10 +2388,10 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
.may_unmap = 1,
.may_swap = !noswap,
.order = 0,
.target_mem_cgroup = mem,
.target_mem_cgroup = memcg,
};
struct mem_cgroup_zone mz = {
.mem_cgroup = mem,
.mem_cgroup = memcg,
.zone = zone,
};
......@@ -2417,7 +2417,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
return sc.nr_reclaimed;
}
unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *memcg,
gfp_t gfp_mask,
bool noswap)
{
......@@ -2430,7 +2430,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
.may_swap = !noswap,
.nr_to_reclaim = SWAP_CLUSTER_MAX,
.order = 0,
.target_mem_cgroup = mem_cont,
.target_mem_cgroup = memcg,
.nodemask = NULL, /* we don't care the placement */
.gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) |
(GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK),
......@@ -2444,7 +2444,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
* take care of from where we get pages. So the node where we start the
* scan does not need to be the current node.
*/
nid = mem_cgroup_select_victim_node(mem_cont);
nid = mem_cgroup_select_victim_node(memcg);
zonelist = NODE_DATA(nid)->node_zonelists;
......
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