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linux_dsm_epyc7002/arch/um
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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 arch/defconfig: remove CONFIG_RESOURCE_COUNTERS 2016-05-23 17:04:14 -07:00
drivers miscdevice: Use module_misc_device() macro 2016-08-31 14:12:35 +02:00
include um: Don't discard .text.exit section 2016-08-23 23:16:16 +02:00
kernel nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
os-Linux um: Support kcov 2016-08-04 00:18:06 +02:00
scripts um: Preinclude include/linux/kern_levels.h 2012-09-27 20:20:09 +02:00
.gitignore
Kconfig.char um: remove used STDIO_CONSOLE Kconfig param 2013-11-17 11:32:27 +01:00
Kconfig.common Merge branch 'for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2016-08-04 19:37:59 -04:00
Kconfig.debug
Kconfig.net arch/um: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:38:04 -08:00
Kconfig.rest
Kconfig.um um: Add seccomp support 2016-01-10 21:49:49 +01:00
Makefile Kbuild: arch: look for generated headers in obtree 2016-07-18 21:31:35 +02:00
Makefile-os-Linux
Makefile-skas