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Date: Tue, 16 Apr 2024 19:51:19 +0200
From: Jesper Dangaard Brouer <hawk@...nel.org>
To: tj@...nel.org, hannes@...xchg.org, lizefan.x@...edance.com,
cgroups@...r.kernel.org, yosryahmed@...gle.com, longman@...hat.com
Cc: Jesper Dangaard Brouer <hawk@...nel.org>, netdev@...r.kernel.org,
linux-mm@...ck.org, linux-kernel@...r.kernel.org, shakeel.butt@...ux.dev,
kernel-team@...udflare.com, linux-kernel@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>, mhocko@...nel.org
Subject: [PATCH v1 0/3] cgroup/rstat: global cgroup_rstat_lock changes
This patchset is focused on the global cgroup_rstat_lock.
Patch-1: Adds tracepoints to improve measuring lock behavior.
Patch-2: Converts the global lock into a mutex.
Patch-3: Limits userspace triggered pressure on the lock.
Background in discussion thread [1].
[1] https://lore.kernel.org/all/ac4cf07f-52dd-454f-b897-2a4b3796a4d9@kernel.org/
---
Jesper Dangaard Brouer (3):
cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints
cgroup/rstat: convert cgroup_rstat_lock back to mutex
cgroup/rstat: introduce ratelimited rstat flushing
block/blk-cgroup.c | 2 +-
include/linux/cgroup-defs.h | 1 +
include/linux/cgroup.h | 5 +-
include/trace/events/cgroup.h | 48 +++++++++++++++
kernel/cgroup/rstat.c | 111 ++++++++++++++++++++++++++++++----
mm/memcontrol.c | 1 +
6 files changed, 153 insertions(+), 15 deletions(-)
--
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