linux-kernel - [PATCH V3 0/2] sched: add trace event for per-entity tracking

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Message-ID: <1372767306-9478-1-git-send-email-leiwen@marvell.com>
Date:	Tue, 2 Jul 2013 20:15:04 +0800
From:	Lei Wen <leiwen@...vell.com>
To:	Paul Turner <pjt@...gle.com>, Alex Shi <alex.shi@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>, <mingo@...hat.com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Lei Wen <leiwen@...vell.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH V3 0/2] sched: add trace event for per-entity tracking

Thanks for the per-entity tracking feature, we could know the details of
each task by its help.
This patch add its trace support, so that we could quickly know the system
status in a large time scale.

The "cfs_rq->runnable_load_avg/cfs_rq->load.weight" is useful in identify
load distribution status in the whole system

With those pre-embedded tracepoint, we could make our life easy over tracking
the system load, especially since the per-entity load tracking is recently added,
people may want to use those trace point to get better understanding for
this new feature.

V3: make trace events passing parameter being simple, and only extend
    its detail in the header file definition. Thanks Peter for pointing out this.

V2: Abstract sched_cfs_rq_runnable_load and sched_cfs_rq_blocked_load using
    sched_cfs_rq_load_contri_template. Thanks Kamalesh for this contribution!

Lei Wen (2):
  sched: add trace events for task and rq usage tracking
  sched: update cfs_rq weight earlier in enqueue_entity

 include/trace/events/sched.h |   73 ++++++++++++++++++++++++++++++++++++++++++
 kernel/sched/fair.c          |   31 ++++++++++++++++--
 2 files changed, 101 insertions(+), 3 deletions(-)

-- 
1.7.10.4

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