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-rw-r--r--net/ipv4/Makefile1
-rw-r--r--net/ipv4/sysctl_net_ipv4.c1
-rw-r--r--net/ipv4/tcp_ipv4.c1
-rw-r--r--net/ipv4/tcp_memcontrol.c200
-rw-r--r--net/ipv6/tcp_ipv6.c1
5 files changed, 0 insertions, 204 deletions
diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index bee5055832a1..62c049b647e9 100644
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -56,7 +56,6 @@ obj-$(CONFIG_TCP_CONG_SCALABLE) += tcp_scalable.o
obj-$(CONFIG_TCP_CONG_LP) += tcp_lp.o
obj-$(CONFIG_TCP_CONG_YEAH) += tcp_yeah.o
obj-$(CONFIG_TCP_CONG_ILLINOIS) += tcp_illinois.o
-obj-$(CONFIG_MEMCG_LEGACY_KMEM) += tcp_memcontrol.o
obj-$(CONFIG_NETLABEL) += cipso_ipv4.o
obj-$(CONFIG_XFRM) += xfrm4_policy.o xfrm4_state.o xfrm4_input.o \
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 46ce410703b1..4d367b4139a3 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -24,7 +24,6 @@
#include <net/cipso_ipv4.h>
#include <net/inet_frag.h>
#include <net/ping.h>
-#include <net/tcp_memcontrol.h>
static int zero;
static int one = 1;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index c7d1fb50f381..5ced3e4013e3 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -73,7 +73,6 @@
#include <net/timewait_sock.h>
#include <net/xfrm.h>
#include <net/secure_seq.h>
-#include <net/tcp_memcontrol.h>
#include <net/busy_poll.h>
#include <linux/inet.h>
diff --git a/net/ipv4/tcp_memcontrol.c b/net/ipv4/tcp_memcontrol.c
deleted file mode 100644
index 133eb5eac49f..000000000000
--- a/net/ipv4/tcp_memcontrol.c
+++ /dev/null
@@ -1,200 +0,0 @@
-#include <net/tcp.h>
-#include <net/tcp_memcontrol.h>
-#include <net/sock.h>
-#include <net/ip.h>
-#include <linux/nsproxy.h>
-#include <linux/memcontrol.h>
-#include <linux/module.h>
-
-int tcp_init_cgroup(struct mem_cgroup *memcg)
-{
- struct mem_cgroup *parent = parent_mem_cgroup(memcg);
- struct page_counter *counter_parent = NULL;
- /*
- * The root cgroup does not use page_counters, but rather,
- * rely on the data already collected by the network
- * subsystem
- */
- if (memcg == root_mem_cgroup)
- return 0;
-
- memcg->tcp_mem.memory_pressure = 0;
-
- if (parent)
- counter_parent = &parent->tcp_mem.memory_allocated;
-
- page_counter_init(&memcg->tcp_mem.memory_allocated, counter_parent);
-
- return 0;
-}
-
-void tcp_destroy_cgroup(struct mem_cgroup *memcg)
-{
- if (memcg == root_mem_cgroup)
- return;
-
- if (memcg->tcp_mem.active)
- static_branch_dec(&memcg_sockets_enabled_key);
-}
-
-static int tcp_update_limit(struct mem_cgroup *memcg, unsigned long nr_pages)
-{
- int ret;
-
- if (memcg == root_mem_cgroup)
- return -EINVAL;
-
- ret = page_counter_limit(&memcg->tcp_mem.memory_allocated, nr_pages);
- if (ret)
- return ret;
-
- if (!memcg->tcp_mem.active) {
- /*
- * The active flag needs to be written after the static_key
- * update. This is what guarantees that the socket activation
- * function is the last one to run. See sock_update_memcg() for
- * details, and note that we don't mark any socket as belonging
- * to this memcg until that flag is up.
- *
- * We need to do this, because static_keys will span multiple
- * sites, but we can't control their order. If we mark a socket
- * as accounted, but the accounting functions are not patched in
- * yet, we'll lose accounting.
- *
- * We never race with the readers in sock_update_memcg(),
- * because when this value change, the code to process it is not
- * patched in yet.
- */
- static_branch_inc(&memcg_sockets_enabled_key);
- memcg->tcp_mem.active = true;
- }
-
- return 0;
-}
-
-enum {
- RES_USAGE,
- RES_LIMIT,
- RES_MAX_USAGE,
- RES_FAILCNT,
-};
-
-static DEFINE_MUTEX(tcp_limit_mutex);
-
-static ssize_t tcp_cgroup_write(struct kernfs_open_file *of,
- char *buf, size_t nbytes, loff_t off)
-{
- struct mem_cgroup *memcg = mem_cgroup_from_css(of_css(of));
- unsigned long nr_pages;
- int ret = 0;
-
- buf = strstrip(buf);
-
- switch (of_cft(of)->private) {
- case RES_LIMIT:
- /* see memcontrol.c */
- ret = page_counter_memparse(buf, "-1", &nr_pages);
- if (ret)
- break;
- mutex_lock(&tcp_limit_mutex);
- ret = tcp_update_limit(memcg, nr_pages);
- mutex_unlock(&tcp_limit_mutex);
- break;
- default:
- ret = -EINVAL;
- break;
- }
- return ret ?: nbytes;
-}
-
-static u64 tcp_cgroup_read(struct cgroup_subsys_state *css, struct cftype *cft)
-{
- struct mem_cgroup *memcg = mem_cgroup_from_css(css);
- u64 val;
-
- switch (cft->private) {
- case RES_LIMIT:
- if (memcg == root_mem_cgroup)
- val = PAGE_COUNTER_MAX;
- else
- val = memcg->tcp_mem.memory_allocated.limit;
- val *= PAGE_SIZE;
- break;
- case RES_USAGE:
- if (memcg == root_mem_cgroup)
- val = atomic_long_read(&tcp_memory_allocated);
- else
- val = page_counter_read(&memcg->tcp_mem.memory_allocated);
- val *= PAGE_SIZE;
- break;
- case RES_FAILCNT:
- if (memcg == root_mem_cgroup)
- return 0;
- val = memcg->tcp_mem.memory_allocated.failcnt;
- break;
- case RES_MAX_USAGE:
- if (memcg == root_mem_cgroup)
- return 0;
- val = memcg->tcp_mem.memory_allocated.watermark;
- val *= PAGE_SIZE;
- break;
- default:
- BUG();
- }
- return val;
-}
-
-static ssize_t tcp_cgroup_reset(struct kernfs_open_file *of,
- char *buf, size_t nbytes, loff_t off)
-{
- struct mem_cgroup *memcg;
-
- memcg = mem_cgroup_from_css(of_css(of));
- if (memcg == root_mem_cgroup)
- return nbytes;
-
- switch (of_cft(of)->private) {
- case RES_MAX_USAGE:
- page_counter_reset_watermark(&memcg->tcp_mem.memory_allocated);
- break;
- case RES_FAILCNT:
- memcg->tcp_mem.memory_allocated.failcnt = 0;
- break;
- }
-
- return nbytes;
-}
-
-static struct cftype tcp_files[] = {
- {
- .name = "kmem.tcp.limit_in_bytes",
- .write = tcp_cgroup_write,
- .read_u64 = tcp_cgroup_read,
- .private = RES_LIMIT,
- },
- {
- .name = "kmem.tcp.usage_in_bytes",
- .read_u64 = tcp_cgroup_read,
- .private = RES_USAGE,
- },
- {
- .name = "kmem.tcp.failcnt",
- .private = RES_FAILCNT,
- .write = tcp_cgroup_reset,
- .read_u64 = tcp_cgroup_read,
- },
- {
- .name = "kmem.tcp.max_usage_in_bytes",
- .private = RES_MAX_USAGE,
- .write = tcp_cgroup_reset,
- .read_u64 = tcp_cgroup_read,
- },
- { } /* terminate */
-};
-
-static int __init tcp_memcontrol_init(void)
-{
- WARN_ON(cgroup_add_legacy_cftypes(&memory_cgrp_subsys, tcp_files));
- return 0;
-}
-__initcall(tcp_memcontrol_init);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4ad8edb46f7c..006396e31cb0 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -61,7 +61,6 @@
#include <net/timewait_sock.h>
#include <net/inet_common.h>
#include <net/secure_seq.h>
-#include <net/tcp_memcontrol.h>
#include <net/busy_poll.h>
#include <linux/proc_fs.h>
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-13 09:47:18 +0000