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authorDaniel Drake <dsd@laptop.org>2010-10-20 16:00:48 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2010-10-22 10:20:11 -0700
commitcd3ecad19aea8debae9a48b53de2ec7a571f24e9 (patch)
treefbdb69e372b60cd01daca0c9ea3c8b5ebebb4d00 /include/scsi
parentserial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster (diff)
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serial8250: ratelimit "too much work" error
Running a serial console, if too many kernel messages are generated within a short time causing a lot of serial I/O, the 8250 driver will generate another kernel message reporting this, which just adds to the I/O. It has a cascading effect and quickly results the system being brought to its knees by a flood of "too much work" messages. Ratelimit the error message to avoid this. [akpm@linux-foundation.org: use the superior printk_ratelimited()] [akpm@linux-foundation.org: printk_ratelimited() needs ratelimit.h] Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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