The patch titled
Subject: kernel/taskstats.c: make taskstats available via genetlink per namespace
has been added to the -mm tree. Its filename is
kernel-make-taskstats-available-via-genetlink-per-namespace.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kernel-make-taskstats-available-via-genetlink-per-namespace.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kernel-make-taskstats-available-via-genetlink-per-namespace.patch
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------------------------------------------------------
From: xu xin <cgel.zte@xxxxxxxxx>
Subject: kernel/taskstats.c: make taskstats available via genetlink per namespace
Currently, the application getdelays cannot get taskstats in a net
namespace. The returned error is just like the following:
-sh-4.4# ps -ef | tail -5
root 186 2 0 09:23 ? 00:00:00 [kworker/2:1H]
root 187 2 0 09:23 ? 00:00:00 [kworker/0:2-eve]
root 190 183 0 09:23 ? 00:00:00 -sh
root 198 190 0 09:25 ? 00:00:00 ps -ef
root 199 190 0 09:25 ? 00:00:00 tail -5
-sh-4.4#
-sh-4.4# ./getdelays -d -p 186 -v
print delayacct stats ON
debug on
Error getting family id, errno 0
As more and more applications are deployed in containers like Docker, it
is necessary to support getdelays to be used in net namespace. Taskstats
is safe for use per namespace as genetlink checks the capability of
namespace message by netlink_ns_capable().
Make taskstats available via genetlink per namespace.
Link: https://lkml.kernel.org/r/20220221032202.1925507-1-xu.xin16@xxxxxxxxxx
Signed-off-by: xu xin <xu.xin16@xxxxxxxxxx>
Reported-by: Changcheng Deng <deng.changcheng@xxxxxxxxxx>
Cc: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: David Miller <davem@xxxxxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/taskstats.c | 1 +
1 file changed, 1 insertion(+)
--- a/kernel/taskstats.c~kernel-make-taskstats-available-via-genetlink-per-namespace
+++ a/kernel/taskstats.c
@@ -664,6 +664,7 @@ static struct genl_family family __ro_af
.module = THIS_MODULE,
.ops = taskstats_ops,
.n_ops = ARRAY_SIZE(taskstats_ops),
+ .netnsok = true,
};
/* Needed early in initialization */
_
Patches currently in -mm which might be from cgel.zte@xxxxxxxxx are
kernel-make-taskstats-available-via-genetlink-per-namespace.patch
