* hwclock causes __might_sleep dump
@ 2003-08-04 10:58 Jani Monoses
0 siblings, 0 replies; only message in thread
From: Jani Monoses @ 2003-08-04 10:58 UTC (permalink / raw)
To: linux-kernel
Hi
at system shutdown when hwclock --systohc is called there's a
might_sleep error dump from the kernel in do_page_fault. I found that
the problem is when hwclock uses direct cmos access when there's no RTC
support in kernel and only when hwclock is compiled with -O3
hwclock does an atomic access achieved with __asm__ cli and sti. Is this
a hwclock bug? I suppose the kernel is not responsible for userland
disabling interrupts ... putting delays and printfs in hwclock either
makes the dump show a different backtrace (although still with 2
do_page_faults) or results in no dump at all.
2.6.0-test1 and test2
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2003-08-04 10:44 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-08-04 10:58 hwclock causes __might_sleep dump Jani Monoses
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).