David S. Miller ab5c780913 sparc64: Do irq_{enter,exit}() around generic_smp_call_function*(). ... Otherwise rcu_irq_{enter,exit}() do not happen and we get dumps like: ==================== [ 188.275021] =============================== [ 188.309351] [ INFO: suspicious RCU usage. ] [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted [ 188.394786] ------------------------------- [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle! [ 188.505235] other info that might help us debug this: [ 188.554230] RCU used illegally from idle CPU! rcu_scheduler_active = 1, debug_locks = 0 [ 188.637587] RCU used illegally from extended quiescent state! [ 188.690684] 3 locks held by swapper/7/0: [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60 [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400 [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40 [ 188.973043]stack backtrace: [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54 [ 189.076187] Call Trace: [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100 [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40 [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400 [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20 [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80 [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40 [ 189.406456] [0000000000495e08] complete+0x28/0x60 [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20 [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60 [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180 [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600 [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0 [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140 [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20 [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0 [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40 ==================== Based almost entirely upon a patch by Paul E. McKenney. Reported-by: Meelis Roos <mroos@linux.ee> Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-11-07 09:50:48 -08:00
..
alpha	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
arc	The "weak" attribute is commonly used for the default version of a	2014-10-23 15:04:27 -07:00
arm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-10-31 15:04:58 -07:00
arm64	arm64 fixes:	2014-10-24 12:48:04 -07:00
avr32	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2014-10-18 18:11:04 -07:00
blackfin	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
c6x	irq_work: Introduce arch_irq_work_has_interrupt()	2014-09-13 18:38:07 +02:00
cris	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
frv	frv: remove unused declarations of __start___ex_table and __stop___ex_table	2014-10-14 02:18:28 +02:00
hexagon	Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:48:00 +02:00
ia64	Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-23 14:45:09 -07:00
m32r	Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:48:00 +02:00
m68k	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu	2014-10-14 03:51:22 +02:00
metag	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
microblaze	microblaze: Wire up bpf syscall	2014-10-27 09:25:34 +01:00
mips	MIPS: SEAD3: Fix I2C device registration.	2014-10-24 13:34:42 +02:00
mn10300	Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:48:00 +02:00
openrisc	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
parisc	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
powerpc	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-31 14:01:47 -07:00
s390	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-31 14:01:47 -07:00
score	score: use Kbuild logic to include <asm-generic/sections.h>	2014-10-09 22:25:46 -04:00
sh	sh: fix sh770x SCIF memory regions	2014-10-29 16:33:15 -07:00
sparc	sparc64: Do irq_{enter,exit}() around generic_smp_call_function*().	2014-11-07 09:50:48 -08:00
tile	Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2014-10-15 07:48:18 +02:00
um	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
unicore32	nosave: consolidate __nosave_{begin,end} in <asm/sections.h>	2014-10-09 22:26:04 -04:00
x86	x86_64, entry: Fix out of bounds read on sysenter	2014-10-31 18:47:09 -07:00
xtensa	Merge git://git.infradead.org/users/eparis/audit	2014-10-19 16:25:56 -07:00
.gitignore
Kconfig	seccomp: Document two-phase seccomp and arch-provided seccomp_data	2014-09-03 14:58:17 -07:00