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linux/include/asm-generic
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Heiko Carstens 7f8d61f005 percpu: use notrace variant of preempt_disable/preempt_enable 
Commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap like
events do") added a couple of this_cpu_read calls to the ftrace code.

On x86 this is not a problem, since it has single instructions to read
percpu data. Other architectures which use the generic variant now
have additional preempt_disable and preempt_enable calls in the core
ftrace code. This may lead to recursive calls and in result to a dead
machine, e.g. if preemption and debugging options are enabled.

To fix this use the notrace variant of preempt_disable and
preempt_enable within the generic percpu code.

Reported-and-bisected-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Tested-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Fixes: 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap like events do")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-11-08 10:29:44 +01:00
..
bitops
bitops: Do not default to __clear_bit() for __clear_bit_unlock()
2016-03-21 10:50:48 +01:00
4level-fixup.h
mm, asm-generic: define PUD_SHIFT in <asm-generic/4level-fixup.h>
2015-02-11 17:06:03 -08:00
asm-offsets.h
asm-generic: Add common asm-offsets.h
2015-06-23 13:35:49 +09:00
atomic64.h
locking/atomic: Implement atomic{,64,_long}_fetch_{add,sub,and,andnot,or,xor}{,_relaxed,_acquire,_release}()
2016-06-16 10:48:32 +02:00
atomic-long.h
locking/atomic: Introduce inc/dec variants for the atomic_fetch_$op() API
2016-07-07 09:16:20 +02:00
atomic.h
locking/atomic: Remove linux/atomic.h:atomic_fetch_or()
2016-06-16 10:48:32 +02:00
audit_change_attr.h
audit: Modify a set of system calls in audit class definitions
2014-01-17 17:01:46 -05:00
audit_dir_write.h
audit: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
audit_read.h
audit: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
audit_signal.h
…
audit_write.h
audit: Modify a set of system calls in audit class definitions
2014-01-17 17:01:46 -05:00
barrier.h
locking/spinlock, arch: Update and fix spin_unlock_wait() implementations
2016-06-14 11:55:15 +02:00
bitops.h
arch: Prepare for smp_mb__{before,after}_atomic()
2014-04-18 11:40:30 +02:00
bitsperlong.h
UAPI: (Scripted) Disintegrate include/asm-generic
2012-10-04 18:20:15 +01:00
bug.h
asm-generic changes for 4.6
2016-03-24 23:13:48 -07:00
bugs.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
cache.h
asm-generic: add generic NOMMU versions of some headers
2009-06-11 21:02:50 +02:00
cacheflush.h
asm-generic/cacheflush.h: flush icache when copying to user pages
2011-05-25 08:39:37 -07:00
checksum.h
ipv4: Update parameters for csum_tcpudp_magic to their original types
2016-03-13 23:55:13 -04:00
clkdev.h
asm-generic: COMMON_CLK defines __clk_{get,put}
2014-09-25 18:00:45 -07:00
cmpxchg-local.h
LLVMLinux: Remove warning about returning an uninitialized variable
2014-04-09 13:44:35 -07:00
cmpxchg.h
asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations
2015-10-15 00:21:13 +02:00
cputime_jiffies.h
sched, time: Fix build error with 64 bit cputime_t on 32 bit systems
2014-10-03 05:46:55 +02:00
cputime_nsecs.h
sched/cputime: Count actually elapsed irq & softirq time
2016-07-14 10:42:34 +02:00
cputime.h
cputime: Generic on-demand virtual cputime accounting
2013-01-27 19:23:27 +01:00
current.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
delay.h
asm-generic: delay.h fix udelay and ndelay for 8 bit args
2011-07-22 18:45:33 +02:00
device.h
Driver Core: Add platform device arch data V3
2009-07-22 00:28:38 +02:00
div64.h
__div64_32(): make it overridable at compile time
2015-11-16 14:42:12 -05:00
dma-contiguous.h
asm-generic: Add dma-contiguous.h
2014-09-22 13:35:51 +02:00
dma.h
asm-generic: add legacy I/O header files
2009-06-11 21:02:42 +02:00
early_ioremap.h
Merge branch 'akpm' (patches from Andrew)
2015-09-08 17:52:23 -07:00
emergency-restart.h
…
exec.h
Split arch_align_stack() out from asm-generic/system.h
2012-03-28 18:30:03 +01:00
export.h
kconfig.h: remove config_enabled() macro
2016-10-27 18:43:43 -07:00
fb.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
fixmap.h
asm-generic: Fix local variable shadow in __set_fixmap_offset
2016-02-16 15:10:44 +00:00
ftrace.h
asm-generic headers: add ftrace.h
2011-03-17 09:19:04 +08:00
futex.h
asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic()
2016-04-21 11:06:09 +02:00
getorder.h
bitops: Add missing parentheses to new get_order macro
2012-02-24 10:39:27 -08:00
gpio.h
gpio: allow setting ARCH_NR_GPIOS from Kconfig
2016-02-19 00:22:54 +01:00
hardirq.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
hugetlb.h
mm: Fix generic hugetlb pte check return type.
2013-10-02 20:02:35 -04:00
hw_irq.h
asm-generic: add legacy I/O header files
2009-06-11 21:02:42 +02:00
ide_iops.h
…
int-ll64.h
UAPI: (Scripted) Disintegrate include/asm-generic
2012-10-04 18:20:15 +01:00
io.h
asm-generic/io.h: add io{read,write}64 accessors
2016-05-31 16:41:50 +08:00
ioctl.h
include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error
2014-06-06 16:08:13 -07:00
iomap.h
asm-generic/io.h: add io{read,write}64 accessors
2016-05-31 16:41:50 +08:00
irq_regs.h
core: Replace __get_cpu_var with __this_cpu_read if not used for an address.
2010-12-17 15:07:19 +01:00
irq_work.h
irq_work: Introduce arch_irq_work_has_interrupt()
2014-09-13 18:38:07 +02:00
irq.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
irqflags.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
Kbuild.asm
UAPI: Set up uapi/asm/Kbuild.asm
2012-10-02 18:01:56 +01:00
kdebug.h
asm-generic: kdebug.h: Checkpatch cleanup
2010-10-09 21:51:44 +02:00
kmap_types.h
asm-generic: remove km_type definitions
2012-07-24 15:27:30 +08:00
kvm_para.h
KVM: add kvm_para_available to asm-generic/kvm_para.h
2013-06-05 13:21:29 +03:00
linkage.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
local64.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
local.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
mcs_spinlock.h
locking/mcs: Allow architecture specific asm files to be used for contended case
2014-02-09 21:18:52 +01:00
memory_model.h
mm: add PHYS_PFN, use it in __phys_to_pfn()
2016-01-14 16:00:49 -08:00
mm_hooks.h
mm/core, x86/mm/pkeys: Differentiate instruction fetches
2016-02-18 19:46:29 +01:00
mm-arch-hooks.h
mm: clean up per architecture MM hook header files
2015-07-17 16:39:53 -07:00
mmu_context.h
asm-generic: Remove asm-generic arch_bprm_mm_init()
2014-11-22 21:52:08 +01:00
mmu.h
asm-generic/mmu.h: Add support for FDPIC
2012-12-09 23:14:14 +01:00
module.h
Make most arch asm/module.h files use asm-generic/module.h
2012-09-28 14:31:03 +09:30
msi.h
asm-generic: Add msi.h
2014-11-23 13:01:47 +01:00
mutex-dec.h
locking/mutex: Optimize mutex_trylock() fast-path
2016-06-08 15:17:01 +02:00
mutex-null.h
arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not
2013-06-26 12:10:55 +02:00
mutex-xchg.h
locking/mutex: Optimize mutex_trylock() fast-path
2016-06-08 15:17:01 +02:00
mutex.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
page.h
asm-generic: page.h: Remove useless get_user_page and free_user_page
2016-02-26 15:24:55 +01:00
param.h
UAPI: (Scripted) Disintegrate include/asm-generic
2012-10-04 18:20:15 +01:00
parport.h
include: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
pci_iomap.h
PCI: Add pci_iomap_wc() variants
2015-08-25 09:59:45 +02:00
pci.h
PCI: Remove unused pcibios_select_root() (again)
2015-06-08 07:56:21 -05:00
percpu.h
percpu: use notrace variant of preempt_disable/preempt_enable
2016-11-08 10:29:44 +01:00
pgalloc.h
asm-generic: add generic NOMMU versions of some headers
2009-06-11 21:02:50 +02:00
pgtable-nopmd.h
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
2009-07-27 12:10:38 -07:00
pgtable-nopud.h
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
2009-07-27 12:10:38 -07:00
pgtable.h
mm: move phys_mem_access_prot_allowed() declaration to pgtable.h
2016-10-07 18:46:29 -07:00
preempt.h
sched/preempt: Fix preempt_count manipulations
2016-05-17 12:24:21 +02:00
ptrace.h
asm-generic/ptrace.h: start a common low level ptrace helper
2011-05-26 17:12:36 -07:00
qrwlock_types.h
locking/qrwlock: Rename ->lock to ->wait_lock
2015-09-18 09:27:29 +02:00
qrwlock.h
locking/qrwlock: Fix write unlock bug on big endian systems
2016-08-10 14:13:27 +02:00
qspinlock_types.h
locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h
2016-02-29 10:02:43 +01:00
qspinlock.h
locking/qspinlock: Use atomic_sub_return_release() in queued_spin_unlock()
2016-06-08 15:17:01 +02:00
resource.h
asm-generic: remove _STK_LIM_MAX
2014-05-15 00:32:09 +01:00
rwsem.h
locking/rwsem: Remove rwsem_atomic_add() and rwsem_atomic_update()
2016-06-08 15:16:59 +02:00
seccomp.h
seccomp: Get compat syscalls from asm-generic header
2016-05-13 14:02:00 +02:00
sections.h
asm/sections: add helpers to check for section data
2016-01-16 11:17:24 -08:00
segment.h
asm-generic: add generic NOMMU versions of some headers
2009-06-11 21:02:50 +02:00
serial.h
asm-generic: add legacy I/O header files
2009-06-11 21:02:42 +02:00
siginfo.h
SIGNAL: Move generic copy_siginfo() to signal.h
2016-05-13 14:02:10 +02:00
signal.h
unify default ptrace_signal_deliver
2012-11-29 00:01:23 -05:00
simd.h
crypto: create generic version of ablk_helper
2013-09-24 06:02:24 +10:00
sizes.h
ARM: 7430/1: sizes.h: move from asm-generic to <linux/sizes.h>
2012-06-28 17:14:34 +01:00
spinlock.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
statfs.h
UAPI: (Scripted) Disintegrate include/asm-generic
2012-10-04 18:20:15 +01:00
string.h
asm-generic: add generic versions of common headers
2009-06-11 21:02:37 +02:00
switch_to.h
Split the switch_to() wrapper out of asm-generic/system.h
2012-03-28 18:30:03 +01:00
syscall.h
syscall.h: fix doc text for syscall_get_arch()
2014-09-23 16:20:00 -04:00
syscalls.h
burying unused conditionals
2013-02-14 09:21:15 -05:00
termios-base.h
asm-generic: rename termios.h, signal.h and mman.h
2009-06-11 21:01:52 +02:00
termios.h
UAPI: (Scripted) Disintegrate include/asm-generic
2012-10-04 18:20:15 +01:00
timex.h
asm-generic: add legacy I/O header files
2009-06-11 21:02:42 +02:00
tlb.h
mm/mmu_gather: track page size with mmu gather and force flush if page size change
2016-07-26 16:19:19 -07:00
tlbflush.h
BUG: headers with BUG/BUG_ON etc. need linux/bug.h
2012-03-04 17:54:34 -05:00
topology.h
topology: alternate fix for ia64 tiger_defconfig build breakage
2010-08-09 20:44:57 -07:00
trace_clock.h
tracing,x86: Add a TSC trace_clock
2012-11-13 15:48:27 -05:00
uaccess-unaligned.h
asm-generic: rename page.h and uaccess.h
2009-06-11 21:02:17 +02:00
uaccess.h
exceptions: detritus removal
2016-09-27 21:15:14 -04:00
unaligned.h
asm-generic: allow generic unaligned access if the arch supports it
2014-05-08 10:22:23 +02:00
unistd.h
We get rid of the general module prefix confusion with a binary config option,
2013-05-05 10:58:06 -07:00
user.h
asm-generic/user.h: Fix spelling in comment
2011-03-01 15:49:39 +01:00
vga.h
asm-generic: add legacy I/O header files
2009-06-11 21:02:42 +02:00
vmlinux.lds.h
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
vtime.h
include/asm-generic/vtime.h: avoid zero-length file
2013-09-30 14:31:02 -07:00
word-at-a-time.h
Make asm/word-at-a-time.h available on all architectures
2015-07-08 16:41:55 -04:00
xor.h
asm-generic: xor: mark static functions as __maybe_unused
2012-10-03 21:21:06 +02:00