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Michal Simek bf2d809668 microblaze: Lockdep support 
Microblaze needs to do lock_init very soon because MMU init calls lock functions.

Here is the explanation from Peter Zijlstra why we have to enable
__ARCH_WANTS_INTERRUPTS_ON_CTSW.

"So we schedule while holding rq->lock (for obvious reasons), but since
lockdep tracks held locks per tasks, we need to transfer the held state
from the prev to the next task. We do this by explicity calling
spin_release(&rq->lock) in context_switch() right before switch_to(),
and calling spin_acquire(&rq->lock) in
finish_task_switch()->finish_lock_switch().

Now, for some reason lockdep thinks that interrupts got enabled over the
context switch (git grep __ARCH_WANTS_INTERRUPTS_ON_CTSW arch/microblaze
doesn't seem to turn up anything).

Clearly trying to acquire the rq->lock with interrupts enabled is a bad
idea and lockdep warns you about this."

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
..
asm-compat.h microblaze: Copy ppc asm-compat.h for clean handling of constants in asm and C 2009-09-22 10:10:06 +02:00
atomic.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
auxvec.h microblaze: Fix problem with removing zero length files 2009-04-14 10:37:09 +02:00
bitops.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
bug.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
bugs.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
byteorder.h microblaze_v8: atomic.h bitops.h swab.h byteorder.h 2009-03-27 14:25:36 +01:00
cache.h microblaze: Remove uncache shadow condition 2009-04-23 16:09:16 +02:00
cacheflush.h block: add helpers to run flush_dcache_page() against a bio and a request's pages 2009-11-26 09:16:19 +01:00
checksum.h microblaze: use the generic lib/checksum.c 2009-07-06 10:26:52 +02:00
clinkage.h microblaze_v8: clinkage.h linkage.h sections.h kmap_types.h 2009-03-27 14:25:38 +01:00
cpuinfo.h
cputable.h microblaze: Fix problem with removing zero length files 2009-04-14 10:37:09 +02:00
cputime.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
current.h microblaze_mmu_v2: Add CURRENT_TASK for entry.S 2009-05-26 16:45:19 +02:00
delay.h microblaze_v8: delay.h, timex.h 2009-03-27 14:25:27 +01:00
device.h Driver Core: Add platform device arch data V3 2009-07-22 00:28:38 +02:00
div64.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
dma-mapping.h microblaze: use generic dma-mapping-broken.h 2009-05-21 15:56:07 +02:00
dma.h microblaze_mmu_v2: Update dma.h for MMU 2009-05-26 16:45:22 +02:00
elf.h microblaze_mmu_v2: Elf update 2009-05-26 16:45:23 +02:00
emergency-restart.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
entry.h microblaze_mmu_v2: entry.S, entry.h 2009-05-26 16:45:20 +02:00
errno.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
exceptions.h microblaze_mmu_v2: Traps MMU update 2009-05-26 16:45:21 +02:00
fb.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
fcntl.h microblaze_v8: fcntl.h sockios.h ucontext.h 2009-03-27 14:25:45 +01:00
flat.h microblaze: remove unused flat_stack_align() definition 2009-06-02 07:54:36 +02:00
ftrace.h microblaze: Add missing empty ftrace.h file 2009-04-14 10:37:18 +02:00
futex.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
gpio.h microblaze: Remove POWERPC reference from Microblaze gpio.h 2009-05-21 15:56:04 +02:00
hardirq.h microblaze: use the generic ack_bad_irq implementation 2009-08-18 10:33:29 +02:00
hw_irq.h microblaze: Fix problem with removing zero length files 2009-04-14 10:37:09 +02:00
io.h microblaze: Add architectural support for USB EHCI host controllers 2009-09-22 08:50:14 +02:00
ioctl.h microblaze_v8: ioctl support 2009-03-27 14:25:33 +01:00
ioctls.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
ipcbuf.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
irq.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
irq_regs.h microblaze_v8: headers for irq 2009-03-27 14:25:35 +01:00
irqflags.h microblaze_v8: headers for irq 2009-03-27 14:25:35 +01:00
Kbuild microblaze: Kbuild update 2009-05-22 09:50:46 +02:00
kdebug.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
linkage.h microblaze_v8: clinkage.h linkage.h sections.h kmap_types.h 2009-03-27 14:25:38 +01:00
lmb.h microblaze_v8: lmb include file 2009-03-27 14:25:18 +01:00
local.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
mman.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
mmu.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
mmu_context.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
mmu_context_mm.h microblaze_mmu_v2: Context handling - mmu_context.c/h 2009-05-26 16:45:15 +02:00
module.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
msgbuf.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
mutex.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
namei.h microblaze_v8: namei.h 2009-03-27 14:25:42 +01:00
of_device.h
of_platform.h of: make of_(un)register_platform_driver common code 2009-05-02 15:36:10 -07:00
page.h microblaze: Create the LOAD_OFFSET macro used to compute VMA vs LMA offsets 2009-09-22 10:10:06 +02:00
param.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
parport.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
pci-bridge.h microblaze_v8: pci headers 2009-03-27 14:25:48 +01:00
pci.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
percpu.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
pgalloc.h mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() 2009-07-27 12:10:38 -07:00
pgtable.h microblaze: Add _PAGE_FILE macros to pgtable.h 2009-07-27 07:39:54 +02:00
poll.h microblaze_v8: pool.h socket.h 2009-03-27 14:25:44 +01:00
posix_types.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
processor.h microblaze_mmu_v2: Update process creation for MMU 2009-05-26 16:45:18 +02:00
prom.h of: merge other miscellaneous prototypes 2009-10-15 10:58:07 -06:00
ptrace.h microblaze: do not include types.h in ptrace.h 2009-05-21 15:56:06 +02:00
pvr.h microblaze_v8: PVR support, cpuinfo support 2009-03-27 14:25:18 +01:00
registers.h microblaze_mmu_v2: Update process creation for MMU 2009-05-26 16:45:18 +02:00
resource.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00
scatterlist.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
sections.h microblaze_mmu_v2: Page table - ioremap - pgtable.c/h, section update 2009-05-26 16:45:16 +02:00
segment.h microblaze_mmu_v2: Update process creation for MMU 2009-05-26 16:45:18 +02:00
selfmod.h microblaze_v8: Selfmodified code 2009-03-27 14:25:15 +01:00
sembuf.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
serial.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
setup.h microblaze: GPIO reset support 2009-12-14 08:40:08 +01:00
shmbuf.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
shmparam.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
sigcontext.h microblaze_v8: sigcontext.h siginfo.h 2009-03-27 14:25:40 +01:00
siginfo.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
signal.h microblaze: clean up signal handling 2009-07-06 10:26:57 +02:00
socket.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
sockios.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
stat.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
statfs.h microblaze_v8: stats headers 2009-03-27 14:25:39 +01:00
string.h microblaze: Guard __HAVE_ARCH macros with __KERNEL__ in string.h 2009-05-21 15:56:08 +02:00
swab.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
syscall.h microblaze: Implement include/asm/syscall.h. 2009-09-21 14:29:21 +02:00
syscalls.h microblaze: use generic syscalls.h 2009-07-06 10:26:59 +02:00
system.h microblaze: Lockdep support 2009-12-14 08:40:09 +01:00
termbits.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
termios.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
thread_info.h sched: INIT_PREEMPT_COUNT 2009-07-10 14:24:05 -07:00
timex.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
tlb.h microblaze: Define tlb_flush macro 2009-07-27 07:39:53 +02:00
tlbflush.h microblaze_mmu_v2: Update tlb.h and tlbflush.h 2009-05-26 16:45:19 +02:00
topology.h microblaze_v8: device.h param.h topology.h 2009-03-27 14:25:44 +01:00
types.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
uaccess.h microblaze: Fix put_user macro for 64bits arguments 2009-07-27 07:39:54 +02:00
ucontext.h microblaze: fall back on generic header files for the ABI 2009-07-06 10:26:50 +02:00
unaligned.h microblaze: Don't use access_ok for unaligned 2009-06-02 08:39:16 +02:00
unistd.h perf: Do the big rename: Performance Counters -> Performance Events 2009-09-21 14:28:04 +02:00
user.h microblaze: Fix problem with removing zero length files 2009-04-14 10:37:09 +02:00
vga.h microblaze: convert all simple headers to use asm-generic 2009-07-06 10:26:55 +02:00
xor.h microblaze_v8: headers simple files - empty or redirect to asm-generic 2009-03-27 14:25:41 +01:00