linux/arch/sh
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
..
boards sh: use common clock framework with device tree boards 2016-08-05 03:29:45 +00:00
boot sh: add device tree source for J2 FPGA on Mimas v2 board 2016-08-05 03:38:26 +00:00
cchips genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
configs sh: add defconfig for J-Core J2 2016-08-05 03:38:22 +00:00
drivers These changes improve device tree support (including builtin DTB), add 2016-08-06 09:00:05 -04:00
include locking/atomic, arch/sh: Fix ATOMIC_FETCH_OP() 2016-09-22 14:47:02 +02:00
kernel nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
lib sh: New gcc support 2016-03-17 19:45:44 +00:00
lib64 sh64: Kill off old exception debugging helpers. 2012-06-14 14:12:18 +09:00
math-emu sh: remove unused do_fpu_error 2014-04-03 16:20:52 -07:00
mm These changes improve device tree support (including builtin DTB), add 2016-08-06 09:00:05 -04:00
oprofile
tools sh: Add RSK2+SH7269 board 2012-05-10 17:20:01 +09:00
Kconfig sh: add SMP support for J2 2016-08-05 03:29:39 +00:00
Kconfig.cpu arch/sh: remove depends on CONFIG_EXPERIMENTAL 2013-01-21 14:43:13 -08:00
Kconfig.debug
Makefile sh: add support for J-Core J2 processor 2016-08-05 03:29:31 +00:00