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917b1f78a9
I've encountered two problems with 2.6.16 and newer kernels on my API CS20 (dual 833MHz Alpha 21264b processors). The first is the kernel OOPSing because of a NULL pointer dereference while trying to populate SysFS with the CPU information. The other is that only one processor was being brought up. I've included a small Alpha-specific patch that fixes both problems. The first problem was caused by the CPUs never being properly registered using register_cpu(), the way it's done on other architectures. The second problem has to do with the removal of hwrpb_cpu_present_mask in arch/alpha/kernel/smp.c. In setup_smp() in the 2.6.15 kernel sources, hwrpb_cpu_present_mask has a bit set for each processor that is probed, and afterwards cpu_present_mask is set to the cpumask for the boot CPU. In the same function of the same file in the 2.6.16 sources, instead of hwrpb_cpu_present_mask being set, cpu_possible_map is updated for each probed CPU. cpu_present_mask is still set to the cpumask of the boot CPU afterwards. The problem lies in include/asm-alpha/smp.h, where cpu_possible_map is #define'd to be cpu_present_mask. Cleanups from: Ivan Kokshaysky <ink@jurassic.park.msu.ru> - cpu_present_mask and cpu_possible_map are essentially the same thing on alpha, as it doesn't support CPU hotplug; - allocate "struct cpu" only for present CPUs, like sparc64 does. Static array of "struct cpu" is just a waste of memory. Signed-off-by: Brian Uhrain <buhrain@rosettastone.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| .. | ||
| alpha_ksyms.c | ||
| asm-offsets.c | ||
| console.c | ||
| core_apecs.c | ||
| core_cia.c | ||
| core_irongate.c | ||
| core_lca.c | ||
| core_marvel.c | ||
| core_mcpcia.c | ||
| core_polaris.c | ||
| core_t2.c | ||
| core_titan.c | ||
| core_tsunami.c | ||
| core_wildfire.c | ||
| entry.S | ||
| err_common.c | ||
| err_ev6.c | ||
| err_ev7.c | ||
| err_impl.h | ||
| err_marvel.c | ||
| err_titan.c | ||
| es1888.c | ||
| gct.c | ||
| head.S | ||
| init_task.c | ||
| io.c | ||
| irq_alpha.c | ||
| irq_i8259.c | ||
| irq_impl.h | ||
| irq_pyxis.c | ||
| irq_srm.c | ||
| irq.c | ||
| machvec_impl.h | ||
| Makefile | ||
| module.c | ||
| ns87312.c | ||
| osf_sys.c | ||
| pci_impl.h | ||
| pci_iommu.c | ||
| pci-noop.c | ||
| pci.c | ||
| process.c | ||
| proto.h | ||
| ptrace.c | ||
| semaphore.c | ||
| setup.c | ||
| signal.c | ||
| smc37c93x.c | ||
| smc37c669.c | ||
| smp.c | ||
| srm_env.c | ||
| srmcons.c | ||
| sys_alcor.c | ||
| sys_cabriolet.c | ||
| sys_dp264.c | ||
| sys_eb64p.c | ||
| sys_eiger.c | ||
| sys_jensen.c | ||
| sys_marvel.c | ||
| sys_miata.c | ||
| sys_mikasa.c | ||
| sys_nautilus.c | ||
| sys_noritake.c | ||
| sys_rawhide.c | ||
| sys_ruffian.c | ||
| sys_rx164.c | ||
| sys_sable.c | ||
| sys_sio.c | ||
| sys_sx164.c | ||
| sys_takara.c | ||
| sys_titan.c | ||
| sys_wildfire.c | ||
| systbls.S | ||
| time.c | ||
| traps.c | ||
| vmlinux.lds.S | ||