[PATCH v7 7/8] Display current tcp memory allocation in kmem cgroup
From: Glauber Costa <hidden>
Date: 2011-10-13 13:11:26
Also in:
linux-mm, lkml
Subsystem:
control group - memory resource controller (memcg), documentation, memory management, the rest · Maintainers:
Johannes Weiner, Michal Hocko, Roman Gushchin, Shakeel Butt, Jonathan Corbet, Andrew Morton, Linus Torvalds
This patch introduces kmem.tcp_current_memory file, living in the kmem_cgroup filesystem. It is a simple read-only file that displays the amount of kernel memory currently consumed by the cgroup. Signed-off-by: Glauber Costa <redacted> Reviewed-by: KAMEZAWA Hiroyuki<redacted> CC: David S. Miller <davem@davemloft.net> CC: Eric W. Biederman <redacted> --- Documentation/cgroups/memory.txt | 1 + mm/memcontrol.c | 5 +++++ 2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index e773bd7..b937a99 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt@@ -79,6 +79,7 @@ Brief summary of control files. memory.independent_kmem_limit # select whether or not kernel memory limits are independent of user limits memory.kmem.tcp.limit_in_bytes # set/show hard limit for tcp buf memory + memory.kmem.tcp.usage_in_bytes # show current tcp buf memory allocation 1. History
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index b696267..1ba318d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c@@ -543,6 +543,11 @@ static struct cftype tcp_files[] = { .read_u64 = mem_cgroup_read, .private = MEMFILE_PRIVATE(_KMEM_TCP, RES_LIMIT), }, + { + .name = "kmem.tcp.usage_in_bytes", + .read_u64 = mem_cgroup_read, + .private = MEMFILE_PRIVATE(_KMEM_TCP, RES_USAGE), + }, }; static void tcp_create_cgroup(struct mem_cgroup *cg, struct cgroup_subsys *ss)
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1.7.6.4
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