Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37;
From:   Dmitry Rokosov <ddrokosov@salutedevices.com>
To:     <rostedt@goodmis.org>, <mhiramat@kernel.org>, <hannes@cmpxchg.org>,
        <mhocko@kernel.org>, <roman.gushchin@linux.dev>,
        <shakeelb@google.com>, <muchun.song@linux.dev>,
        <akpm@linux-foundation.org>
CC:     <kernel@sberdevices.ru>, <rockosov@gmail.com>,
        <cgroups@vger.kernel.org>, <linux-mm@kvack.org>,
        <linux-kernel@vger.kernel.org>, <bpf@vger.kernel.org>,
        Dmitry Rokosov <ddrokosov@salutedevices.com>
Subject: [PATCH v2 0/2] mm: memcg: improve vmscan tracepoints
Date:   Wed, 22 Nov 2023 13:01:54 +0300
Message-ID: <20231122100156.6568-1-ddrokosov@salutedevices.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk

The motivation behind this commit is to enhance the traceability and
understanding of memcg events. By integrating the function cgroup_name()
into the existing memcg tracepoints, this patch series introduces a new
tracepoint template for the begin() and end() events. It utilizes a
static __array() to store the cgroup name, enabling developers to easily
identify the cgroup associated with a specific memcg tracepoint event.

Additionally, this patch series introduces new shrink_memcg tracepoints
to facilitate non-direct memcg reclaim tracing and debugging.

Changes v2 since v1 at [1]:
    - change the position of the "memcg" parameter to ensure backward
      compatibility with userspace tools that use memcg tracepoints
    - add additional CONFIG_MEMCG ifdefs to prevent the use of memcg
      tracepoints when memcg is disabled

Links:
    [1] https://lore.kernel.org/all/20231101102837.25205-1-ddrokosov@salutedevices.com/

Dmitry Rokosov (2):
  mm: memcg: print out cgroup name in the memcg tracepoints
  mm: memcg: introduce new event to trace shrink_memcg

 include/trace/events/vmscan.h | 91 ++++++++++++++++++++++++++++++-----
 mm/vmscan.c                   | 21 ++++++--
 2 files changed, 95 insertions(+), 17 deletions(-)

-- 
2.36.0