Messages in this thread | | | From | (Linus Torvalds) | Subject | Re: 2.1.112 SMP No-go | Date | 29 Jul 1998 05:41:08 GMT |
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In article <Pine.LNX.3.96.980728215320.788A-100000@air.steve.net>, Steven N. Hirsch <shirsch@adelphia.net> wrote: > >Kernel 2.1.112 hangs at the point where init is normally started. This is >on a dual PentiumPro box which has worked properly through 2.1.112-pre1 >(didn't try pre-2). Motherboard is an FIC PO-6200 w/ Intel 450GX "Orion" >chipset.
This is a total brain-fart on my part. Look into the <linux/smp_lock.h> file, and you'll find an inline function for "lock_kernel()". In that function, change the "if (lock_depth)" statement to a "if (!lock_depth)" (ie just add the "!" character to reverse the test). Suddenly everything works.
This silly thing was that I had fairly extensively tested the new lock code yesterday with all kinds of extra sanity tests, and then when I released 2.1.112 I removed the sanity tests and cleaned up the header file a bit, and the "!" disappeared somewhen during that syntactic cleanup.
Linus
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