linux-kernel - Re: [RFC PATCH v2 1/5] irq: add tracepoint to softirq

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Date:	Fri, 25 Jun 2010 10:10:44 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Koki Sanagi <sanagi.koki@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	kaneshige.kenji@...fujitsu.com, izumi.taku@...fujitsu.com,
	Lai Jiangshan <laijs@...fujitsu.com>
Subject: Re: [RFC PATCH v2 1/5] irq: add tracepoint to softirq_raise

(cc to Lai)

> This patch adds a tracepoint to raising of softirq.
> This is useful if you want to detect which hard interrupt raise softirq
> and lets you know a time between raising softirq and performing softirq.
> Combinating with other tracepoint, it lets us know a process of packets
> (See patch 0/5).
> 
>           <idle>-0     [001] 241229.957184: softirq_raise: vec=3 [action=NET_RX]
>           <idle>-0     [000] 241229.993399: softirq_raise: vec=1 [action=TIMER]
>           <idle>-0     [000] 241229.993400: softirq_raise: vec=9 [action=RCU]
> 
> This is a same patch Lai Jiangshan submitted.
> http://marc.info/?l=linux-kernel&m=126026122728732&w=2

If so, you shouldn't remove author's info. please fix the description
as following.

-------------------------------------------------------------------------
From: Lai Jiangshan <laijs@...fujitsu.com>

This patch adds a tracepoint to raising of softirq.
This is useful if you want to detect which hard interrupt raise softirq
and lets you know a time between raising softirq and performing softirq.
Combinating with other tracepoint, it lets us know a process of packets
(See patch 0/5).

          <idle>-0     [001] 241229.957184: softirq_raise: vec=3 [action=NET_RX]
          <idle>-0     [000] 241229.993399: softirq_raise: vec=1 [action=TIMER]
          <idle>-0     [000] 241229.993400: softirq_raise: vec=9 [action=RCU]

This is a same below.
http://marc.info/?l=linux-kernel&m=126026122728732&w=2

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Acked-by: Frederic Weisbecker <fweisbec@...il.com>
Signed-off-by: Koki Sanagi <sanagi.koki@...fujitsu.com>
--------------------------------------------------------------------------------


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