Hello, Has anyone successfully applied and run the linux kernel preemption patch on a 2.4.20 kernel. I have the following:
- Latest Denx kernel (2_4_devel) running on 440GP ebony - 'preempt-kernel-rml-2.4.20-1.patch' applied to my kernel source (I manually corrected a couple of fails and double checked a few 'successfully applied with fuzz' instances when applying the patch). - Kernel compiled with 'Kernel preemption =y' in make oldconfig When I try to boot this kernel, I get the following error: <------- snipped Kernel command line: root=/dev/nfs rw nfsroot=172.16.77.152:/opt/eldk/ppc_4xx ip=172.16.77.155:172.16.77.152::255.255.255.0:EBONY-2::off kernel BUG at irq.c:575! Oops: Exception in kernel mode, sig: 4 NIP: C0002B04 XER: 00000000 LR: C0002B04 SP: C0125F50 REGS: c0125ea0 TRAP: 0700 Not tainted MSR: 00001030 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 TASK = c0124060[0] 'swapper' Last syscall: 0 last math 00000000 last altivec 00000000 PLB0: bear= 0x00008000 acr= 0x9b000000 besr= 0x00000000 GPR00: C0002B04 C0125F50 C0124060 00000019 00001030 00000001 00000020 C0170000 GPR08: 000001D8 00000002 00000000 C0125E70 C012A8A8 71000000 07FE7300 007FFC73 GPR16: 00000000 00000001 007FFC00 FFFFFFFF 00001032 C0125F60 00000000 C00017CC GPR24: C0002AA0 007FFB90 00000E00 007FFC73 007FFC00 00000000 00000000 007FFB90 Call backtrace: C0002B04 C00017CC C0133504 C0000224 Kernel panic: Attempted to kill the idle task! In idle task - not syncing <0>Rebooting in 180 seconds.. ---------> the end -- Brian ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
