Chris Metcalf 6727ad9e20 nmi_backtrace: generate one-line reports for idle cpus ... When doing an nmi backtrace of many cores, most of which are idle, the output is a little overwhelming and very uninformative. Suppress messages for cpus that are idling when they are interrupted and just emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN". We do this by grouping all the cpuidle code together into a new .cpuidle.text section, and then checking the address of the interrupted PC to see if it lies within that section. This commit suitably tags x86 and tile idle routines, and only adds in the minimal framework for other architectures. Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Tested-by: Petr Mladek <pmladek@suse.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-10-07 18:46:30 -07:00
..
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
Kbuild.asm	…
asm-offsets.h	asm-generic: Add common asm-offsets.h	2015-06-23 13:35:49 +09:00
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
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
audit_change_attr.h	…
audit_dir_write.h	…
audit_read.h	…
audit_signal.h	…
audit_write.h	…
barrier.h	locking/spinlock, arch: Update and fix spin_unlock_wait() implementations	2016-06-14 11:55:15 +02:00
bitops.h	…
bitsperlong.h	…
bug.h	asm-generic changes for 4.6	2016-03-24 23:13:48 -07:00
bugs.h	…
cache.h	…
cacheflush.h	…
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	…
cmpxchg.h	asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations	2015-10-15 00:21:13 +02:00
cputime.h	…
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
current.h	…
delay.h	…
device.h	…
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	…
early_ioremap.h	Merge branch 'akpm' (patches from Andrew)	2015-09-08 17:52:23 -07:00
emergency-restart.h	…
exec.h	…
fb.h	…
fixmap.h	asm-generic: Fix local variable shadow in __set_fixmap_offset	2016-02-16 15:10:44 +00:00
ftrace.h	…
futex.h	asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic()	2016-04-21 11:06:09 +02:00
getorder.h	…
gpio.h	gpio: allow setting ARCH_NR_GPIOS from Kconfig	2016-02-19 00:22:54 +01:00
hardirq.h	…
hugetlb.h	…
hw_irq.h	…
ide_iops.h	…
int-ll64.h	…
io.h	asm-generic/io.h: add io{read,write}64 accessors	2016-05-31 16:41:50 +08:00
ioctl.h	…
iomap.h	asm-generic/io.h: add io{read,write}64 accessors	2016-05-31 16:41:50 +08:00
irq.h	…
irq_regs.h	…
irq_work.h	irq_work: Introduce arch_irq_work_has_interrupt()	2014-09-13 18:38:07 +02:00
irqflags.h	…
kdebug.h	…
kmap_types.h	…
kvm_para.h	…
libata-portmap.h	…
linkage.h	…
local.h	…
local64.h	…
mcs_spinlock.h	…
memory_model.h	mm: add PHYS_PFN, use it in __phys_to_pfn()	2016-01-14 16:00:49 -08:00
mm-arch-hooks.h	mm: clean up per architecture MM hook header files	2015-07-17 16:39:53 -07:00
mm_hooks.h	mm/core, x86/mm/pkeys: Differentiate instruction fetches	2016-02-18 19:46:29 +01:00
mmu.h	…
mmu_context.h	asm-generic: Remove asm-generic arch_bprm_mm_init()	2014-11-22 21:52:08 +01:00
module.h	…
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	…
mutex-xchg.h	locking/mutex: Optimize mutex_trylock() fast-path	2016-06-08 15:17:01 +02:00
mutex.h	…
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	…
parport.h	…
pci.h	PCI: Remove unused pcibios_select_root() (again)	2015-06-08 07:56:21 -05:00
pci_iomap.h	PCI: Add pci_iomap_wc() variants	2015-08-25 09:59:45 +02:00
percpu.h	…
pgalloc.h	…
pgtable-nopmd.h	…
pgtable-nopud.h	…
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	…
qrwlock.h	locking/qrwlock: Fix write unlock bug on big endian systems	2016-08-10 14:13:27 +02:00
qrwlock_types.h	locking/qrwlock: Rename ->lock to ->wait_lock	2015-09-18 09:27:29 +02:00
qspinlock.h	locking/qspinlock: Use atomic_sub_return_release() in queued_spin_unlock()	2016-06-08 15:17:01 +02:00
qspinlock_types.h	locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h	2016-02-29 10:02:43 +01:00
resource.h	…
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	…
serial.h	…
siginfo.h	SIGNAL: Move generic copy_siginfo() to signal.h	2016-05-13 14:02:10 +02:00
signal.h	…
simd.h	…
sizes.h	…
spinlock.h	…
statfs.h	…
string.h	…
switch_to.h	…
syscall.h	syscall.h: fix doc text for syscall_get_arch()	2014-09-23 16:20:00 -04:00
syscalls.h	…
termios-base.h	…
termios.h	…
timex.h	…
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	…
topology.h	…
trace_clock.h	…
uaccess-unaligned.h	…
uaccess.h	Merge branch 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-09-14 09:35:05 -07:00
unaligned.h	…
unistd.h	…
user.h	…
vga.h	…
vmlinux.lds.h	nmi_backtrace: generate one-line reports for idle cpus	2016-10-07 18:46:30 -07:00
vtime.h	…
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	…