From: Peter Zijlstra Date: Mon, 27 Feb 2012 09:47:00 +0000 (+0100) Subject: printk/sched: Introduce special printk_sched() for those awkward moments X-Git-Tag: v3.4-rc1~191^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ccf3e8306156a28213adc720aba807e9a901ad5;p=pandora-kernel.git printk/sched: Introduce special printk_sched() for those awkward moments There's a few awkward printk()s inside of scheduler guts that people prefer to keep but really are rather deadlock prone. Fudge around it by storing the text in a per-cpu buffer and poll it using the existing printk_tick() handler. This will drop output when its more frequent than once a tick, however only the affinity thing could possible go that fast and for that just one should suffice to notify the admin he's done something silly.. Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Link: http://lkml.kernel.org/n/tip-wua3lmkt3dg8nfts66o6brne@git.kernel.org Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed