Brian King 444080d13d powerpc/pseries: Fix partition migration hang in stop_topology_update ... 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>		2012-02-14 15:01:39 +11:00
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alpha	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
arm	Serial/TTY fixes for the 3.3-rc3 tree	2012-02-09 13:52:57 -08:00
avr32	avr32: select generic atomic64_t support	2012-02-03 16:16:40 -08:00
blackfin	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
c6x	C6X: replace tick_nohz_stop/restart_sched_tick calls	2012-01-08 15:13:16 -05:00
cris	lib: use generic pci_iomap on all architectures	2012-01-10 18:04:27 -08:00
frv	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
h8300	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
hexagon	lib: move GENERIC_IOMAP to lib/Kconfig	2011-11-24 22:21:19 +02:00
ia64	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-01-18 15:51:48 -08:00
m32r	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
m68k	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k	2012-01-26 12:43:57 -08:00
microblaze	Revert "microblaze: Add topology init"	2012-01-31 09:06:52 +01:00
mips	mips: use the the PCI controller's io_map_base	2012-01-31 23:20:30 +02:00
mn10300	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
openrisc	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2012-01-16 14:34:54 -08:00
parisc	parisc, exec: remove redundant set_fs(USER_DS)	2012-01-12 20:13:04 -08:00
powerpc	powerpc/pseries: Fix partition migration hang in stop_topology_update	2012-02-14 15:01:39 +11:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2012-01-30 09:02:10 -08:00
score	score: fix off-by-one index into syscall table	2012-01-23 08:38:49 -08:00
sh	sh: use the the PCI channels's io_map_base	2012-01-31 23:21:19 +02:00
sparc	lib: Fix multiple definitions of clz_tab	2012-02-02 10:34:23 +11:00
tile	Merge branch 'for-next' of git://git.infradead.org/users/dhowells/linux-headers	2012-01-14 18:03:30 -08:00
um	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
unicore32	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci	2012-01-11 18:50:26 -08:00
x86	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-02-10 09:05:07 -08:00
xtensa	xtensa: fix memscan()	2012-02-03 16:16:40 -08:00
.gitignore
Kconfig	mm,x86,um: move CMPXCHG_DOUBLE config option	2012-01-12 20:13:03 -08:00