linux-kernel - [PATCH v7 0/3] sched/rt: Move sched_rt_entity::back to CONFIG_RT_GROUP

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Message-Id: <20231009122244.2394336-1-yajun.deng@linux.dev>
Date:   Mon,  9 Oct 2023 20:22:41 +0800
From:   Yajun Deng <yajun.deng@...ux.dev>
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, vschneid@...hat.com
Cc:     linux-kernel@...r.kernel.org, Yajun Deng <yajun.deng@...ux.dev>
Subject: [PATCH v7 0/3] sched/rt: Move sched_rt_entity::back to CONFIG_RT_GROUP_SCHED

The member back in struct sched_rt_entity only related to RT_GROUP_SCHED,
it should not place out of RT_GROUP_SCHED, move back to RT_GROUP_SCHED.
It will save a few bytes.

The 1st patch is introduce for_each_sched_rt_entity_back() & use it,
it no functional changes.

The 2nd patch is init 'back' in init_tg_rt_entry, it remove the call to
back when CONFIG_RT_GROUP_SCHED is disabled.

The 3rd patch is move sched_rt_entity::back to under the
CONFIG_RT_GROUP_SCHED block, it will save a few bytes.

Yajun Deng (3):
  sched/rt: Introduce for_each_sched_rt_entity_back() & use it
  sched/rt: Init 'back' in init_tg_rt_entry
  sched/headers: Move sched_rt_entity::back to under the
    CONFIG_RT_GROUP_SCHED block

 include/linux/sched.h |  2 +-
 kernel/sched/rt.c     | 17 ++++++++++++-----
 2 files changed, 13 insertions(+), 6 deletions(-)

-- 
2.25.1