The patch titled
Subject: mm: memcontrol: switch to the updated jump-label API
has been added to the -mm tree. Its filename is
mm-memcontrol-switch-to-the-updated-jump-label-api.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-switch-to-the-updated-jump-label-api.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-switch-to-the-updated-jump-label-api.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memcontrol: switch to the updated jump-label API
According to <linux/jump_label.h> the direct use of struct static_key is
deprecated. Update the socket and slab accounting code accordingly.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Reported-by: Jason Baron <jbaron@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 8 ++++----
mm/memcontrol.c | 12 ++++++------
net/ipv4/tcp_memcontrol.c | 4 ++--
3 files changed, 12 insertions(+), 12 deletions(-)
diff -puN include/linux/memcontrol.h~mm-memcontrol-switch-to-the-updated-jump-label-api include/linux/memcontrol.h
--- a/include/linux/memcontrol.h~mm-memcontrol-switch-to-the-updated-jump-label-api
+++ a/include/linux/memcontrol.h
@@ -704,8 +704,8 @@ void sock_release_memcg(struct sock *sk)
bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages);
void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages);
#if defined(CONFIG_MEMCG) && defined(CONFIG_INET)
-extern struct static_key memcg_sockets_enabled_key;
-#define mem_cgroup_sockets_enabled static_key_false(&memcg_sockets_enabled_key)
+extern struct static_key_false memcg_sockets_enabled_key;
+#define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key)
static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg)
{
#ifdef CONFIG_MEMCG_KMEM
@@ -727,7 +727,7 @@ static inline bool mem_cgroup_under_sock
#endif
#ifdef CONFIG_MEMCG_KMEM
-extern struct static_key memcg_kmem_enabled_key;
+extern struct static_key_false memcg_kmem_enabled_key;
extern int memcg_nr_cache_ids;
void memcg_get_cache_ids(void);
@@ -743,7 +743,7 @@ void memcg_put_cache_ids(void);
static inline bool memcg_kmem_enabled(void)
{
- return static_key_false(&memcg_kmem_enabled_key);
+ return static_branch_unlikely(&memcg_kmem_enabled_key);
}
static inline bool memcg_kmem_is_active(struct mem_cgroup *memcg)
diff -puN mm/memcontrol.c~mm-memcontrol-switch-to-the-updated-jump-label-api mm/memcontrol.c
--- a/mm/memcontrol.c~mm-memcontrol-switch-to-the-updated-jump-label-api
+++ a/mm/memcontrol.c
@@ -346,7 +346,7 @@ void memcg_put_cache_ids(void)
* conditional to this static branch, we'll have to allow modules that does
* kmem_cache_alloc and the such to see this symbol as well
*/
-struct static_key memcg_kmem_enabled_key;
+DEFINE_STATIC_KEY_FALSE(memcg_kmem_enabled_key);
EXPORT_SYMBOL(memcg_kmem_enabled_key);
#endif /* CONFIG_MEMCG_KMEM */
@@ -2883,7 +2883,7 @@ static int memcg_activate_kmem(struct me
err = page_counter_limit(&memcg->kmem, nr_pages);
VM_BUG_ON(err);
- static_key_slow_inc(&memcg_kmem_enabled_key);
+ static_branch_inc(&memcg_kmem_enabled_key);
/*
* A memory cgroup is considered kmem-active as soon as it gets
* kmemcg_id. Setting the id after enabling static branching will
@@ -3622,7 +3622,7 @@ static void memcg_destroy_kmem(struct me
{
if (memcg->kmem_acct_activated) {
memcg_destroy_kmem_caches(memcg);
- static_key_slow_dec(&memcg_kmem_enabled_key);
+ static_branch_dec(&memcg_kmem_enabled_key);
WARN_ON(page_counter_read(&memcg->kmem));
}
tcp_destroy_cgroup(memcg);
@@ -4258,7 +4258,7 @@ mem_cgroup_css_online(struct cgroup_subs
#ifdef CONFIG_INET
if (cgroup_subsys_on_dfl(memory_cgrp_subsys) && !cgroup_memory_nosocket)
- static_key_slow_inc(&memcg_sockets_enabled_key);
+ static_branch_inc(&memcg_sockets_enabled_key);
#endif
/*
@@ -4302,7 +4302,7 @@ static void mem_cgroup_css_free(struct c
memcg_destroy_kmem(memcg);
#ifdef CONFIG_INET
if (cgroup_subsys_on_dfl(memory_cgrp_subsys) && !cgroup_memory_nosocket)
- static_key_slow_dec(&memcg_sockets_enabled_key);
+ static_branch_dec(&memcg_sockets_enabled_key);
#endif
__mem_cgroup_free(memcg);
}
@@ -5524,7 +5524,7 @@ void mem_cgroup_replace_page(struct page
#ifdef CONFIG_INET
-struct static_key memcg_sockets_enabled_key;
+DEFINE_STATIC_KEY_FALSE(memcg_sockets_enabled_key);
EXPORT_SYMBOL(memcg_sockets_enabled_key);
void sock_update_memcg(struct sock *sk)
diff -puN net/ipv4/tcp_memcontrol.c~mm-memcontrol-switch-to-the-updated-jump-label-api net/ipv4/tcp_memcontrol.c
--- a/net/ipv4/tcp_memcontrol.c~mm-memcontrol-switch-to-the-updated-jump-label-api
+++ a/net/ipv4/tcp_memcontrol.c
@@ -34,7 +34,7 @@ void tcp_destroy_cgroup(struct mem_cgrou
return;
if (memcg->tcp_mem.active)
- static_key_slow_dec(&memcg_sockets_enabled_key);
+ static_branch_dec(&memcg_sockets_enabled_key);
}
static int tcp_update_limit(struct mem_cgroup *memcg, unsigned long nr_pages)
@@ -65,7 +65,7 @@ static int tcp_update_limit(struct mem_c
* because when this value change, the code to process it is not
* patched in yet.
*/
- static_key_slow_inc(&memcg_sockets_enabled_key);
+ static_branch_inc(&memcg_sockets_enabled_key);
memcg->tcp_mem.active = true;
}
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
maintainers-make-vladimir-co-maintainer-of-the-memory-controller.patch
mm-page_alloc-generalize-the-dirty-balance-reserve.patch
proc-meminfo-estimate-available-memory-more-conservatively.patch
mm-memcontrol-export-root_mem_cgroup.patch
net-tcp_memcontrol-properly-detect-ancestor-socket-pressure.patch
net-tcp_memcontrol-remove-bogus-hierarchy-pressure-propagation.patch
net-tcp_memcontrol-protect-all-tcp_memcontrol-calls-by-jump-label.patch
net-tcp_memcontrol-remove-dead-per-memcg-count-of-allocated-sockets.patch
net-tcp_memcontrol-simplify-the-per-memcg-limit-access.patch
net-tcp_memcontrol-sanitize-tcp-memory-accounting-callbacks.patch
net-tcp_memcontrol-simplify-linkage-between-socket-and-page-counter.patch
mm-memcontrol-generalize-the-socket-accounting-jump-label.patch
mm-memcontrol-do-not-account-memoryswap-on-unified-hierarchy.patch
mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting.patch
mm-memcontrol-account-socket-memory-in-unified-hierarchy-memory-controller.patch
mm-memcontrol-hook-up-vmpressure-to-socket-pressure.patch
mm-memcontrol-switch-to-the-updated-jump-label-api.patch
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