kernel_optimize_test/arch/ia64
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
..
configs
dig
hp dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
include ia64: implement atomic64_dec_if_positive 2016-10-07 18:46:30 -07:00
kernel nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
lib Merge branch 'master' into for-next 2016-04-18 11:18:55 +02:00
mm mm: do not pass mm_struct into handle_mm_fault 2016-07-26 16:19:19 -07:00
oprofile
pci PCI: Set ROM shadow location in arch code, not in PCI core 2016-03-08 12:14:31 -06:00
scripts
sn dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
uv
install.sh
Kconfig Implements HARDENED_USERCOPY verification of copy_to_user/copy_from_user 2016-08-08 14:48:14 -07:00
Kconfig.debug
Makefile kbuild: drop redundant "PHONY += FORCE" 2016-04-20 10:38:40 +02:00
module.lds