The patch titled
Subject: mm: memcontrol: move socket code for unified hierarchy accounting
has been added to the -mm tree. Its filename is
mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting.patch
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------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memcontrol: move socket code for unified hierarchy accounting
The unified hierarchy memory controller will account socket memory. Move
the infrastructure functions accordingly.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 148 +++++++++++++++++++++++-----------------------
1 file changed, 74 insertions(+), 74 deletions(-)
diff -puN mm/memcontrol.c~mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting mm/memcontrol.c
--- a/mm/memcontrol.c~mm-memcontrol-move-socket-code-for-unified-hierarchy-accounting
+++ a/mm/memcontrol.c
@@ -294,80 +294,6 @@ static inline struct mem_cgroup *mem_cgr
return mem_cgroup_from_css(css);
}
-/* Writing them here to avoid exposing memcg's inner layout */
-#if defined(CONFIG_INET) && defined(CONFIG_MEMCG_KMEM)
-
-struct static_key memcg_sockets_enabled_key;
-EXPORT_SYMBOL(memcg_sockets_enabled_key);
-
-void sock_update_memcg(struct sock *sk)
-{
- struct mem_cgroup *memcg;
-
- /* Socket cloning can throw us here with sk_cgrp already
- * filled. It won't however, necessarily happen from
- * process context. So the test for root memcg given
- * the current task's memcg won't help us in this case.
- *
- * Respecting the original socket's memcg is a better
- * decision in this case.
- */
- if (sk->sk_memcg) {
- BUG_ON(mem_cgroup_is_root(sk->sk_memcg));
- css_get(&sk->sk_memcg->css);
- return;
- }
-
- rcu_read_lock();
- memcg = mem_cgroup_from_task(current);
- if (memcg != root_mem_cgroup &&
- memcg->tcp_mem.active &&
- css_tryget_online(&memcg->css))
- sk->sk_memcg = memcg;
- rcu_read_unlock();
-}
-EXPORT_SYMBOL(sock_update_memcg);
-
-void sock_release_memcg(struct sock *sk)
-{
- WARN_ON(!sk->sk_memcg);
- css_put(&sk->sk_memcg->css);
-}
-
-/**
- * mem_cgroup_charge_skmem - charge socket memory
- * @memcg: memcg to charge
- * @nr_pages: number of pages to charge
- *
- * Charges @nr_pages to @memcg. Returns %true if the charge fit within
- * @memcg's configured limit, %false if the charge had to be forced.
- */
-bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages)
-{
- struct page_counter *counter;
-
- if (page_counter_try_charge(&memcg->tcp_mem.memory_allocated,
- nr_pages, &counter)) {
- memcg->tcp_mem.memory_pressure = 0;
- return true;
- }
- page_counter_charge(&memcg->tcp_mem.memory_allocated, nr_pages);
- memcg->tcp_mem.memory_pressure = 1;
- return false;
-}
-
-/**
- * mem_cgroup_uncharge_skmem - uncharge socket memory
- * @memcg - memcg to uncharge
- * @nr_pages - number of pages to uncharge
- */
-void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages)
-{
- page_counter_uncharge(&memcg->tcp_mem.memory_allocated, nr_pages);
-}
-
-#endif
-
#ifdef CONFIG_MEMCG_KMEM
/*
* This will be the memcg's index in each cache's ->memcg_params.memcg_caches.
@@ -5574,6 +5500,80 @@ void mem_cgroup_replace_page(struct page
commit_charge(newpage, memcg, true);
}
+/* Writing them here to avoid exposing memcg's inner layout */
+#if defined(CONFIG_INET) && defined(CONFIG_MEMCG_KMEM)
+
+struct static_key memcg_sockets_enabled_key;
+EXPORT_SYMBOL(memcg_sockets_enabled_key);
+
+void sock_update_memcg(struct sock *sk)
+{
+ struct mem_cgroup *memcg;
+
+ /* Socket cloning can throw us here with sk_cgrp already
+ * filled. It won't however, necessarily happen from
+ * process context. So the test for root memcg given
+ * the current task's memcg won't help us in this case.
+ *
+ * Respecting the original socket's memcg is a better
+ * decision in this case.
+ */
+ if (sk->sk_memcg) {
+ BUG_ON(mem_cgroup_is_root(sk->sk_memcg));
+ css_get(&sk->sk_memcg->css);
+ return;
+ }
+
+ rcu_read_lock();
+ memcg = mem_cgroup_from_task(current);
+ if (memcg != root_mem_cgroup &&
+ memcg->tcp_mem.active &&
+ css_tryget_online(&memcg->css))
+ sk->sk_memcg = memcg;
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(sock_update_memcg);
+
+void sock_release_memcg(struct sock *sk)
+{
+ WARN_ON(!sk->sk_memcg);
+ css_put(&sk->sk_memcg->css);
+}
+
+/**
+ * mem_cgroup_charge_skmem - charge socket memory
+ * @memcg: memcg to charge
+ * @nr_pages: number of pages to charge
+ *
+ * Charges @nr_pages to @memcg. Returns %true if the charge fit within
+ * @memcg's configured limit, %false if the charge had to be forced.
+ */
+bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages)
+{
+ struct page_counter *counter;
+
+ if (page_counter_try_charge(&memcg->tcp_mem.memory_allocated,
+ nr_pages, &counter)) {
+ memcg->tcp_mem.memory_pressure = 0;
+ return true;
+ }
+ page_counter_charge(&memcg->tcp_mem.memory_allocated, nr_pages);
+ memcg->tcp_mem.memory_pressure = 1;
+ return false;
+}
+
+/**
+ * mem_cgroup_uncharge_skmem - uncharge socket memory
+ * @memcg - memcg to uncharge
+ * @nr_pages - number of pages to uncharge
+ */
+void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages)
+{
+ page_counter_uncharge(&memcg->tcp_mem.memory_allocated, nr_pages);
+}
+
+#endif
+
/*
* subsys_initcall() for memory controller.
*
_
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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