forked from luck/tmp_suning_uos_patched
444080d13d
This fixes a hang that was observed during live partition migration.
Since stop_topology_update must not be called from an interrupt
context, call it earlier in the migration process. The hang observed
can be seen below:
WARNING: at kernel/timer.c:1011
Modules linked in: ip6t_LOG xt_tcpudp xt_pkttype ipt_LOG xt_limit ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_raw xt_NOTRACK ipt_REJECT xt_state iptable_raw iptable_filter ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables ip6table_filter ip6_tables x_tables ipv6 fuse loop ibmveth sg ext3 jbd mbcache raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid10 raid1 raid0 scsi_dh_alua scsi_dh_rdac scsi_dh_hp_sw scsi_dh_emc dm_round_robin dm_multipath scsi_dh sd_mod crc_t10dif ibmvfc scsi_transport_fc scsi_tgt scsi_mod dm_snapshot dm_mod
NIP: c0000000000c52d8 LR: c00000000004be28 CTR: 0000000000000000
REGS: c00000005ffd77d0 TRAP: 0700 Not tainted (3.2.0-git-00001-g07d106d)
MSR: 8000000000021032 <ME,CE,IR,DR> CR: 48000084 XER: 00000001
CFAR: c00000000004be20
TASK = c00000005ec78860[0] 'swapper/3' THREAD: c00000005ec98000 CPU: 3
GPR00: 0000000000000001 c00000005ffd7a50 c000000000fbbc98 c000000000ec8340
GPR04: 00000000282a0020 0000000000000000 0000000000004000 0000000000000101
GPR08: 0000000000000012 c00000005ffd4000 0000000000000020 c000000000f3ba88
GPR12: 0000000000000000 c000000007f40900 0000000000000001 0000000000000004
GPR16: 0000000000000001 0000000000000000 0000000000000000 c000000001022310
GPR20: 0000000000000001 0000000000000000 0000000000200200 c000000001029e14
GPR24: 0000000000000000 0000000000000001 0000000000000040 c00000003f74bc80
GPR28: c00000003f74bc84 c000000000f38038 c000000000f16b58 c000000000ec8340
NIP [c0000000000c52d8] .del_timer_sync+0x28/0x60
LR [c00000000004be28] .stop_topology_update+0x20/0x38
Call Trace:
[c00000005ffd7a50] [c00000005ec78860] 0xc00000005ec78860 (unreliable)
[c00000005ffd7ad0] [c00000000004be28] .stop_topology_update+0x20/0x38
[c00000005ffd7b40] [c000000000028378] .__rtas_suspend_last_cpu+0x58/0x260
[c00000005ffd7bf0] [c0000000000fa230] .generic_smp_call_function_interrupt+0x160/0x358
[c00000005ffd7cf0] [c000000000036ec8] .smp_ipi_demux+0x88/0x100
[c00000005ffd7d80] [c00000000005c154] .icp_hv_ipi_action+0x5c/0x80
[c00000005ffd7e00] [c00000000012a088] .handle_irq_event_percpu+0x100/0x318
[c00000005ffd7f00] [c00000000012e774] .handle_percpu_irq+0x84/0xd0
[c00000005ffd7f90] [c000000000022ba8] .call_handle_irq+0x1c/0x2c
[c00000005ec9ba20] [c00000000001157c] .do_IRQ+0x22c/0x2a8
[c00000005ec9bae0] [c0000000000054bc] hardware_interrupt_entry+0x18/0x1c
Exception: 501 at .cpu_idle+0x194/0x2f8
LR = .cpu_idle+0x194/0x2f8
[c00000005ec9bdd0] [c000000000017e58] .cpu_idle+0x188/0x2f8 (unreliable)
[c00000005ec9be90] [c00000000067ec18] .start_secondary+0x3e4/0x524
[c00000005ec9bf90] [c0000000000093e8] .start_secondary_prolog+0x10/0x14
Instruction dump:
ebe1fff8 4e800020 fbe1fff8 7c0802a6 f8010010 7c7f1b78 f821ff81 78290464
80090014 5400019e 7c0000d0 78000fe0 <0b000000> 4800000c 7c210b78 7c421378
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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| .. | ||
| vdso32 | ||
| vdso64 | ||
| .gitignore | ||
| align.c | ||
| asm-offsets.c | ||
| audit.c | ||
| btext.c | ||
| cacheinfo.c | ||
| cacheinfo.h | ||
| clock.c | ||
| compat_audit.c | ||
| cpu_setup_6xx.S | ||
| cpu_setup_44x.S | ||
| cpu_setup_a2.S | ||
| cpu_setup_fsl_booke.S | ||
| cpu_setup_pa6t.S | ||
| cpu_setup_power7.S | ||
| cpu_setup_ppc970.S | ||
| cputable.c | ||
| crash_dump.c | ||
| crash.c | ||
| dbell.c | ||
| dma-iommu.c | ||
| dma-swiotlb.c | ||
| dma.c | ||
| e500-pmu.c | ||
| entry_32.S | ||
| entry_64.S | ||
| exceptions-64e.S | ||
| exceptions-64s.S | ||
| firmware.c | ||
| fpu.S | ||
| fsl_booke_entry_mapping.S | ||
| ftrace.c | ||
| head_8xx.S | ||
| head_32.S | ||
| head_40x.S | ||
| head_44x.S | ||
| head_64.S | ||
| head_booke.h | ||
| head_fsl_booke.S | ||
| hw_breakpoint.c | ||
| ibmebus.c | ||
| idle_6xx.S | ||
| idle_book3e.S | ||
| idle_e500.S | ||
| idle_power4.S | ||
| idle_power7.S | ||
| idle.c | ||
| init_task.c | ||
| io-workarounds.c | ||
| io.c | ||
| iomap.c | ||
| iommu.c | ||
| irq.c | ||
| isa-bridge.c | ||
| jump_label.c | ||
| kgdb.c | ||
| kprobes.c | ||
| kvm_emul.S | ||
| kvm.c | ||
| l2cr_6xx.S | ||
| legacy_serial.c | ||
| lparcfg.c | ||
| machine_kexec_32.c | ||
| machine_kexec_64.c | ||
| machine_kexec.c | ||
| Makefile | ||
| misc_32.S | ||
| misc_64.S | ||
| misc.S | ||
| module_32.c | ||
| module_64.c | ||
| module.c | ||
| mpc7450-pmu.c | ||
| msi.c | ||
| nvram_64.c | ||
| of_platform.c | ||
| paca.c | ||
| pci_32.c | ||
| pci_64.c | ||
| pci_dn.c | ||
| pci_of_scan.c | ||
| pci-common.c | ||
| perf_callchain.c | ||
| perf_event_fsl_emb.c | ||
| perf_event.c | ||
| pmc.c | ||
| power4-pmu.c | ||
| power5-pmu.c | ||
| power5+-pmu.c | ||
| power6-pmu.c | ||
| power7-pmu.c | ||
| ppc32.h | ||
| ppc970-pmu.c | ||
| ppc_ksyms.c | ||
| ppc_save_regs.S | ||
| proc_powerpc.c | ||
| process.c | ||
| prom_init_check.sh | ||
| prom_init.c | ||
| prom_parse.c | ||
| prom.c | ||
| ptrace32.c | ||
| ptrace.c | ||
| reloc_32.S | ||
| reloc_64.S | ||
| rtas_flash.c | ||
| rtas_pci.c | ||
| rtas-proc.c | ||
| rtas-rtc.c | ||
| rtas.c | ||
| rtasd.c | ||
| setup_32.c | ||
| setup_64.c | ||
| setup-common.c | ||
| setup.h | ||
| signal_32.c | ||
| signal_64.c | ||
| signal.c | ||
| signal.h | ||
| smp-tbsync.c | ||
| smp.c | ||
| softemu8xx.c | ||
| stacktrace.c | ||
| suspend.c | ||
| swsusp_32.S | ||
| swsusp_64.c | ||
| swsusp_asm64.S | ||
| swsusp_booke.S | ||
| swsusp.c | ||
| sys_ppc32.c | ||
| syscalls.c | ||
| sysfs.c | ||
| systbl_chk.c | ||
| systbl_chk.sh | ||
| systbl.S | ||
| tau_6xx.c | ||
| time.c | ||
| traps.c | ||
| udbg_16550.c | ||
| udbg.c | ||
| vdso.c | ||
| vecemu.c | ||
| vector.S | ||
| vio.c | ||
| vmlinux.lds.S | ||