linux/arch/score
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
..
boot score: Add support for Sunplus S+core architecture 2009-06-19 11:38:47 +02:00
configs KEYS: CONFIG_KEYS_DEBUG_PROC_KEYS is no longer an option 2016-02-10 10:13:27 +00:00
include score: fix copy_from_user() and friends 2016-09-13 17:50:14 -04:00
kernel nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
lib score: Fix exception handler label 2015-06-10 10:19:47 -07:00
mm treewide: replace obsolete _refok by __ref 2016-08-02 17:31:41 -04:00
Kconfig lib/GCD.c: use binary GCD algorithm instead of Euclidean 2016-05-20 17:58:30 -07:00
Kconfig.debug score: Fix typo in Kconfig.debug 2012-02-05 17:14:48 +01:00
Makefile Score: Modify the Makefile of Score, remove -mlong-calls for compiling 2013-09-26 03:46:03 +08:00