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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
..
accessibility printk: move braille console support into separate braille.[ch] files 2013-07-31 14:41:03 -07:00
acpi nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
amba ARM: 8596/1: amba: Support clk parents and rates assigned in DT 2016-08-12 16:47:07 +01:00
android android: binder: Remove deprecated create_singlethread_workqueue 2016-08-15 17:00:45 +02:00
ata pata_ninja32: Avoid corrupting status flags 2016-08-30 11:59:47 -04:00
atm atm: iphase: fix newline escape and minor tweak to source formatting 2016-09-15 19:15:55 -04:00
auxdisplay auxdisplay: ks0108: initialize local parport variable 2015-08-14 17:27:17 -07:00
base memory-hotplug: fix store_mem_state() return value 2016-10-07 18:46:28 -07:00
bcma bcma: use of_dma_configure() to set initial dma mask 2016-09-09 12:00:37 +03:00
block Revert "floppy: refactor open() flags handling" 2016-08-25 08:56:51 -06:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-10-05 10:11:24 -07:00
bus Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 19:43:08 -07:00
cdrom cdrom: support read sub-channel command in LBA format 2016-07-12 08:24:50 -07:00
char Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-10-04 14:48:27 -07:00
clk CLK: Add Loongson1C clock support 2016-09-23 14:49:21 -07:00
clocksource Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 18:09:13 -07:00
connector connector: make cn_proc explicitly non-modular 2016-07-05 11:40:47 -07:00
cpufreq Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2016-10-06 07:59:37 -07:00
cpuidle nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
crypto chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ULD's 2016-09-19 01:37:32 -04:00
dax dax: fix mapping size check 2016-09-03 10:40:57 -07:00
dca dmaengine: ioatdma: constify dca_ops structures 2015-11-16 09:27:32 +05:30
devfreq PM / devfreq: rk3399_dmc: Remove explictly regulator_put call in .remove 2016-09-19 13:36:20 +02:00
dio m68k: don't export static inline functions 2009-12-06 11:18:28 +01:00
dma dmaengine updates for 4.8-rc1 2016-10-06 17:13:54 -07:00
dma-buf dma-buf/sw_sync: de-stage SW_SYNC 2016-08-15 16:41:46 +02:00
edac * Altera Arria10 enablement of NAND, DMA, USB, QSPI and SD-MMC FIFO 2016-10-04 12:06:26 -07:00
eisa Revert "EISA: Initialize device before its resources" 2014-01-17 14:57:29 -07:00
extcon Merge branch 'next' into resolution 2016-09-15 16:45:20 +05:30
firewire treewide: replace dev->trans_start update with helper 2016-05-04 14:16:49 -04:00
firmware Fix bug in module unloading. 2016-10-06 15:16:16 -07:00
fmc Merge 3.14-rc5 into char-misc-next 2014-03-02 19:53:09 -08:00
fpga fpga manager: Add hardware dependency to Zynq driver 2016-09-08 17:31:44 +02:00
gpio Merge branch 'i2c/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-10-07 14:12:21 -07:00
gpu Merge branch 'i2c/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-10-07 14:12:21 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2016-10-07 11:58:38 -07:00
hsi HSI: omap_ssi: drop pm_runtime_irq_safe 2016-06-28 00:40:08 +02:00
hv Drivers: hv: get rid of id in struct vmbus_channel 2016-09-27 12:35:49 +02:00
hwmon hwmon updates for v4.9 2016-10-04 10:56:14 -07:00
hwspinlock hwspinlock: qcom_hwspinlock: add missing of_node_put after calling of_parse_phandle 2016-07-06 12:20:34 -07:00
hwtracing coresight: tmc: mark symbols static where possible 2016-09-09 13:53:00 +02:00
i2c Merge branch 'i2c/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-10-07 14:12:21 -07:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2016-07-29 13:29:06 -07:00
idle nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
iio Staging/IIO patches for 4.9-rc1 2016-10-05 14:50:51 -07:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-10-05 10:11:24 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-10-07 09:12:19 -07:00
iommu KVM updates for v4.9-rc1 2016-10-06 10:49:01 -07:00
ipack tty: Replace ASYNC_INITIALIZED bit and update atomically 2016-04-30 09:26:55 -07:00
irqchip irqchip core changes for v4.9 2016-09-22 22:49:52 +02:00
isdn mISDN: mark symbols static where possible 2016-09-01 23:36:17 -07:00
leds leds: triggers: Check return value of kobject_uevent_env() 2016-09-20 10:22:10 +02:00
lguest Merge branch 'x86/urgent' into x86/asm to pick up dependent fixes 2016-04-13 11:36:44 +02:00
lightnvm miscdevice: Use module_misc_device() macro 2016-08-31 14:12:35 +02:00
macintosh drivers/macintosh: Delete owner assignment 2016-08-22 11:09:33 +10:00
mailbox Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2016-10-06 17:36:53 -07:00
mcb mcb: Add a dma_device to mcb_device 2016-09-27 12:33:47 +02:00
md Merge tag 'md/4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2016-10-07 09:45:43 -07:00
media USB/PHY/EXTCON patches for 4.9-rc1 2016-10-03 20:17:35 -07:00
memory Char/Misc driver update for 4.9-rc1 2016-10-03 19:57:49 -07:00
memstick memstick: don't allocate unused major for ms_block 2016-08-02 17:31:41 -04:00
message scsi: fusion: Fix error return code in mptfc_probe() 2016-09-14 14:26:19 -04:00
mfd - Core Frameworks 2016-10-07 08:35:35 -07:00
misc Merge branch 'i2c/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-10-07 14:12:21 -07:00
mmc mmc: dw_mmc: remove the deprecated "supports-highspeed" property 2016-09-26 21:31:37 +02:00
mtd Another round of MTD fixes for v4.8 2016-09-28 12:53:08 -07:00
net phy: micrel.c: Enable ksz9031 energy-detect power-down mode 2016-10-05 21:19:06 -04:00
nfc NFC 4.8 pull request 2016-07-20 23:39:36 -07:00
ntb ntb: add DMA error handling for RX DMA 2016-08-08 08:11:42 +05:30
nubus nubus: Remove superfluous interrupt disable/restore 2014-10-27 11:03:19 +01:00
nvdimm libnvdimm, region: fix flush hint table thinko 2016-09-24 11:45:38 -07:00
nvme nvme-rdma: only clear queue flags after successful connect 2016-09-22 19:58:17 -06:00
nvmem nvmem: rockchip-efuse: add rk3399-efuse support 2016-09-02 17:22:51 +02:00
of DeviceTree updates for 4.9: 2016-10-05 11:56:38 -07:00
oprofile oprofile/timer: Convert to hotplug state machine 2016-09-19 21:44:28 +02:00
parisc dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
parport parport: use subsys_initcall 2016-04-30 13:56:46 -07:00
pci PCI changes for the v4.9 merge window: 2016-10-07 11:46:37 -07:00
pcmcia pcmcia: lubbock: fix sockets configuration 2016-09-12 10:57:01 +01:00
perf Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-03 19:43:08 -07:00
phy phy-twl4030-usb: initialize charging-related stuff via pm_runtime 2016-09-14 10:59:12 +05:30
pinctrl This is the bulk of GPIO changes for the v4.9 series: 2016-10-05 11:49:09 -07:00
platform - Core Frameworks 2016-10-07 08:35:35 -07:00
pnp PNP: isapnp: make core more explicitly non-modular 2016-08-16 22:53:59 +02:00
power power supply and reset changes for the v4.9 series 2016-10-06 18:21:15 -07:00
powercap x86/cpu: Rename Merrifield2 to Moorefield 2016-09-08 08:13:08 +02:00
pps pps: do not crash when failed to register 2016-07-23 10:25:54 +09:00
ps3 drivers/ps3: Fix ps3-vuart null dereference 2015-09-29 23:00:58 +10:00
ptp ptp: Fix resource leak in case of error 2016-10-03 21:54:10 -04:00
pwm pwm: Changes for v4.8-rc1 2016-08-06 00:01:33 -04:00
rapidio rapidio/rio_cm: avoid GFP_KERNEL in atomic context 2016-09-19 15:36:17 -07:00
ras x86/ras: Move AMD MCE injector to arch/x86/ras/ 2015-08-13 10:12:54 +02:00
regulator - Core Frameworks 2016-10-07 08:35:35 -07:00
remoteproc rpmsg updates for v4.9 2016-10-06 17:03:49 -07:00
reset reset: add TI SYSCON based reset driver 2016-06-29 23:39:10 +02:00
rpmsg rpmsg: smd: fix dependency on QCOM_SMD=n 2016-09-12 07:05:13 -07:00
rtc Merge branches 'ib-mfd-gpio-4.9', 'ib-mfd-gpio-regulator-4.9', 'ib-mfd-input-4.9', 'ib-mfd-regulator-4.9', 'ib-mfd-regulator-4.9.1', 'ib-mfd-regulator-rtc-4.9', 'ib-mfd-regulator-rtc-4.9-1' and 'ib-mfd-rtc-4.9' into ibs-for-mfd-merged 2016-10-04 15:47:01 +01:00
s390 SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
sbus openprom: fix warning 2016-05-20 18:33:37 -07:00
scsi SCSI misc on 20161006 2016-10-07 09:28:53 -07:00
sfi SFI: fix compiler warnings 2014-12-03 18:49:20 -05:00
sh drivers: sh: Stop using the legacy clock domain on ARM 2016-05-30 09:41:11 +09:00
sn Drivers: misc: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
soc ARM: EXYNOS: Remove calls to of_genpd_get_from_provider() 2016-09-13 02:49:33 +02:00
spi Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/tools', 'spi/topic/txx9' and 'spi/topic/xlp' into spi-next 2016-09-30 09:14:22 -07:00
spmi spmi: pmic-arb: Return an error code if sanity check fails 2016-09-27 12:43:34 +02:00
ssb SSB: Change bare unsigned to unsigned int to suit coding style 2016-07-06 15:09:36 +02:00
staging Staging/IIO patches for 4.9-rc1 2016-10-05 14:50:51 -07:00
target chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ULD's 2016-09-19 01:37:32 -04:00
tc TC: Error handling clean-ups 2014-11-24 07:45:25 +01:00
thermal thermal: rcar_thermal: Fix priv->zone error handling 2016-09-06 20:46:06 +08:00
thunderbolt thunderbolt: Don't declare Falcon Ridge unsupported 2016-08-31 13:25:02 +02:00
tty TTY/Serial patches for 4.9-rc1 2016-10-03 20:11:49 -07:00
uio uio: fix dmem_region_start computation 2016-08-31 13:07:30 +02:00
usb Revert "usbtmc: convert to devm_kzalloc" 2016-09-28 11:51:30 +02:00
uwb uwb: hwa-rc: don't print error when allocating urb fails 2016-08-15 15:52:40 +02:00
vfio vfio_pci: use pci_alloc_irq_vectors 2016-09-29 13:36:38 -06:00
vhost Merge 4.8-rc5 into char-misc-next 2016-09-05 08:04:07 +02:00
video backlight: pwm_bl: Handle gpio that can sleep 2016-10-06 09:27:26 +01:00
virt mm/gup: Switch all callers of get_user_pages() to not pass tsk/mm 2016-02-16 10:11:12 +01:00
virtio virtio: mark vring_dma_dev() static 2016-09-09 21:12:35 +03:00
vlynq drivers/vlynq/vlynq.c: fix another resource size off by 1 error 2014-01-23 16:36:55 -08:00
vme vme: fake: remove unexpected unlock in fake_master_set() 2016-09-27 12:43:35 +02:00
w1 w1: fix timeout_us parameter description 2016-08-31 13:56:05 +02:00
watchdog USB/PHY/EXTCON patches for 4.9-rc1 2016-10-03 20:17:35 -07:00
xen xen: features and fixes for 4.9-rc0 2016-10-06 11:19:10 -07:00
zorro zorro: Use kobj_to_dev() 2016-01-25 09:42:23 +01:00
Kconfig libnvdimm for 4.7 2016-05-23 11:18:01 -07:00
Makefile clk: probe common clock drivers earlier 2016-09-23 13:00:04 +02:00