Messages in this thread | | | Date | Wed, 02 Jan 2002 21:46:06 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] solves freeze due to serial comm. on SMP |
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kees wrote: > > Hi, > > In the beginning of last year I reported a solid freeze problem with Linux > when I moved from UP to SMP. Some bughunting especially with kdb an hints > from AM I was able to nail it down to some SMP unsafe irq table handling > in serial.c. > I submitted the attached patch to Ted but that never made it to the > kernel. It _really_ solved the problem as I had a crash sometimes within > 15 minutes and after applying it I reached uptimes over 100 days. >
It looks like somebody has already had a go at fixing this in current kernels - the restore_flags() has been moved to the end of shutdown(). (It's not a complete fix, because request_irq() can schedule).
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