linux-kernel - [PATCH 0/3] reduce per cpu boot up messages

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Date:	Fri, 05 Mar 2010 13:10:35 -0600
From:	Mike Travis <travis@....com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jack Steiner <steiner@....com>, Tony Ernst <tee@....com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] reduce per cpu boot up messages


Since more complex patches were rejected, try simple patches to
reduce the boot up clutter on the console, specifically those
which are printed for each cpu.


Patch 1: limit-MCA-messages changes:

Booting Node   0, Processors  #1
CPU 1 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #2
CPU 2 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #3
CPU 3 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #4
CPU 4 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #5
CPU 5 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #6
CPU 6 MCA banks SHD:0 SHD:1 CMCI:2 CMCI:3 CMCI:5 SHD:6 SHD:7 SHD:8 SHD:9 SHD:12 SHD:13 SHD:14 SHD:15 SHD:16 SHD:17 SHD:18 SHD:19 SHD:20 SHD:21
 #7

<<< and so on for up to 4096 cpus >>>

to a less cluttered:

Booting Node   0, Processors  #1 #2 #3 #4 #5 #6 #7 Ok.
Booting Node   1, Processors  #8 #9 #10 #11 #12 #13 #14 #15 Ok.
Booting Node   2, Processors  #16 #17 #18 #19 #20 #21 #22 #23 Ok.
...

Patch 2: change-firmware-msglevel

Change the loglevel of these messages to debug so as to not
get 4096 repititous messages.

Patch 3: remove-idle-messages

Print the "WARNING: polling idle and HT enabled, performance may degrade"
message once instead of for each cpu.

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