Sergey Senozhatsky 04b8eb7a4c symbol lookup: introduce dereference_symbol_descriptor() ... dereference_symbol_descriptor() invokes appropriate ARCH specific function descriptor dereference callbacks: - dereference_kernel_function_descriptor() if the pointer is a kernel symbol; - dereference_module_function_descriptor() if the pointer is a module symbol. This is the last step needed to make '%pS/%ps' smart enough to handle function descriptor dereference on affected ARCHs and to retire '%pF/%pf'. To refresh it: Some architectures (ia64, ppc64, parisc64) use an indirect pointer for C function pointers - the function pointer points to a function descriptor and we need to dereference it to get the actual function pointer. Function descriptors live in .opd elf section and all affected ARCHs (ia64, ppc64, parisc64) handle it properly for kernel and modules. So we, technically, can decide if the dereference is needed by simply looking at the pointer: if it belongs to .opd section then we need to dereference it. The kernel and modules have their own .opd sections, obviously, that's why we need to split dereference_function_descriptor() and use separate kernel and module dereference arch callbacks. Link: http://lkml.kernel.org/r/20171206043649.GB15885@jagdpanzerIV Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: James Bottomley <jejb@parisc-linux.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jessica Yu <jeyu@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-ia64@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Tested-by: Tony Luck <tony.luck@intel.com> #ia64 Tested-by: Santosh Sivaraj <santosh@fossix.org> #powerpc Tested-by: Helge Deller <deller@gmx.de> #parisc64 Signed-off-by: Petr Mladek <pmladek@suse.com>		2018-01-09 10:45:38 +01:00
..
ABI	platform-drivers-x86 for v4.15-1	2017-11-18 10:26:57 -08:00
accounting
acpi	ACPI / LPIT: Add Low Power Idle Table (LPIT) support	2017-10-11 15:38:10 +02:00
admin-guide	platform-drivers-x86 for v4.15-1	2017-11-18 10:26:57 -08:00
aoe
arm	ARM: sunxi: add support for R40 SoC	2017-09-22 21:57:09 +02:00
arm64	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
auxdisplay
backlight
blackfin
block	block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP	2017-11-14 20:13:33 -07:00
blockdev	SCSI misc on 20170907	2017-09-07 21:11:05 -07:00
bpf	bpf: document answers to common questions about BPF	2017-11-01 21:01:47 +09:00
bus-devices
cdrom	documentation: Update ide-cd documentation to reflect CONFIG_BLK_DEV_HD_IDE removal	2017-10-12 11:25:31 -06:00
cgroup-v1
cma
connector
console
core-api	A relatively calm cycle for the docs tree again.	2017-11-13 08:25:06 -08:00
cpu-freq	cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZE	2017-11-08 23:41:25 +01:00
cpuidle
cris
crypto	crypto: doc - adapt api sample to use async. op wait	2017-11-03 22:11:23 +08:00
dev-tools	Kbuild misc updates for v4.15	2017-11-17 17:51:33 -08:00
device-mapper	dm raid: fix incorrect status output at the end of a "recover" process	2017-10-05 16:21:30 -04:00
devicetree	fbdev changes for v4.15:	2017-11-20 21:50:24 -10:00
doc-guide	Documentation: fix ref to sphinx/kerneldoc.py	2017-10-19 12:57:10 -06:00
driver-api	This is the bulk of pin control changes for the v4.15	2017-11-16 10:57:11 -08:00
driver-model	We have two changes to the core framework this time around. The first being a	2017-11-17 20:04:24 -08:00
early-userspace
EDID
extcon
fault-injection	cpu/hotplug: Get rid of CPU hotplug notifier leftovers	2017-11-13 10:03:53 +01:00
fb	documentation: fb: update list of available compiled-in fonts	2017-11-08 03:39:52 -07:00
features	Documentation/features/KASAN: mark KASAN as supported only on 64-bit on x86	2017-10-03 14:40:22 -06:00
filesystems	Merge branch 'akpm' (patches from Andrew)	2017-11-17 16:56:17 -08:00
firmware_class
fmc
fpga
frv
gpio	Merge branch 'gpio-irqchip-rework' of /home/linus/linux-gpio into devel	2017-11-09 09:38:42 +01:00
gpu	amdgpu DC display code for Vega.	2017-11-17 14:34:42 -08:00
hid	Documentation: fix input related doc refs	2017-10-12 11:14:06 -06:00
hwmon	pmbus: Add driver for Maxim MAX31785 Intelligent Fan Controller	2017-11-05 06:06:33 -08:00
i2c	i2c: i801: Add support for Intel Cedar Fork	2017-10-05 14:44:56 +02:00
ia64
ide
iio
infiniband	Documentation: Hardware tag matching	2017-08-29 08:30:21 -04:00
input	Documentation: fix input related doc refs	2017-10-12 11:14:06 -06:00
ioctl
isdn
kbuild	DeviceTree for 4.15:	2017-11-14 18:25:40 -08:00
kdump
kernel-hacking
laptops	Documentation: fix admin-guide doc refs	2017-10-12 11:13:28 -06:00
leds	Documentation: leds: Update 00-INDEX file	2017-10-23 20:17:03 +02:00
lightnvm
livepatch	livepatch: add (un)patch callbacks	2017-10-19 10:08:56 +02:00
locking	Documentation: fix locking rt-mutex doc refs	2017-10-19 12:56:44 -06:00
m68k
md	md-cluster: update document for raid10	2017-11-01 21:32:25 -07:00
media	media updates for v4.15-rc1	2017-11-15 20:30:12 -08:00
memory-devices
metag
mic
mips
misc-devices
mmc
mn10300
mtd
namespaces
netlabel
networking	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-11-15 11:56:19 -08:00
nfc
nios2
nvdimm
nvmem	NVMEM documentation fix: A minor typo	2017-08-24 13:31:58 -06:00
openrisc	Documentation: openrisc: Updates to README	2017-10-30 21:37:53 +09:00
parisc
PCI
pcmcia
perf	Documentation: perf: hisi: Documentation for HiSilicon SoC PMU driver	2017-10-19 17:06:34 +01:00
phy
platform
power	PM / runtime: Drop children check from __pm_runtime_set_status()	2017-11-16 22:51:22 +01:00
powerpc
pps	drivers/pps: aesthetic tweaks to PPS-related content	2017-09-08 18:26:51 -07:00
process	A relatively calm cycle for the docs tree again.	2017-11-13 08:25:06 -08:00
pti
ptp
rapidio
RCU	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 12:18:10 -08:00
s390
scheduler
scsi	scsi: smartpqi: correct spelling error in documentation	2017-10-23 04:15:17 -04:00
security	Documentation: fix security related doc refs	2017-10-12 11:14:40 -06:00
serial
sh
sound	sound updates for 4.15-rc1	2017-11-14 18:01:46 -08:00
sparc
sphinx	Documentation/sphinx: fix kernel-doc decode for non-utf-8 locale	2017-08-31 13:36:28 -06:00
sphinx-static
spi
sysctl	Documentation/sysctl/vm.txt: fix typo	2017-11-17 16:10:03 -08:00
target
thermal
timers	docs: highres: fix broken urls	2017-09-26 14:58:23 -06:00
trace	Char/Misc patches for 4.15-rc1	2017-11-16 09:10:59 -08:00
translations	This is the bulk of pin control changes for the v4.15	2017-11-16 10:57:11 -08:00
usb	Documentation: fix usb related doc refs	2017-10-12 11:15:48 -06:00
userspace-api	seccomp: Implement SECCOMP_RET_KILL_PROCESS action	2017-08-14 13:46:50 -07:00
virtual	KVM: s390: fixes and improvements for 4.15	2017-11-16 14:39:46 +01:00
vm	mm/mmu_notifier: avoid double notification when it is useless	2017-11-15 18:21:03 -08:00
w1	add w1_ds28e17 driver for the DS28E17 Onewire to I2C master bridge	2017-10-04 10:29:22 +02:00
watchdog	Documentation: fix selftests related file refs	2017-10-19 12:58:21 -06:00
wimax
x86	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 19:05:19 -08:00
xtensa
.gitignore
00-INDEX
atomic_bitops.txt	Documentation/locking/atomic: Add documents for new atomic_t APIs	2017-08-10 12:29:00 +02:00
atomic_t.txt	Documentation/locking/atomic: Finish the document...	2017-08-25 11:06:33 +02:00
bcache.txt
bt8xxgpio.txt
btmrvl.txt
bus-virt-phys-mapping.txt
cachetlb.txt
cgroup-v2.txt	cgroup, sched: Move basic cpu stats from cgroup.stat to cpu.stat	2017-10-26 10:56:33 -07:00
Changes
circular-buffers.txt
clearing-warn-once.txt	kernel debug: support resetting WARN*_ONCE	2017-11-17 16:10:00 -08:00
clk.txt
CodingStyle
conf.py	docs-rst: don't require adjustbox anymore	2017-09-08 10:02:55 -06:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt	dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags	2017-09-01 11:59:17 +02:00
DMA-attributes.txt
DMA-ISA-LPC.txt
docutils.conf
dontdiff	Remove gperf usage from toolchain	2017-08-19 11:02:53 -07:00
efi-stub.txt
eisa.txt
errseq.rst
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt
highuid.txt
hw_random.txt
hwspinlock.txt
index.rst
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt	ipmi: Make IPMI panic strings always available	2017-09-27 16:03:45 -05:00
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
isa.txt
isapnp.txt
kernel-doc-nano-HOWTO.txt
kernel-per-CPU-kthreads.txt
kobject.txt
kprobes.txt	kprobes/docs: Remove jprobes related documents	2017-10-20 11:02:55 +02:00
kref.txt
ldm.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lsm.txt
lzo.txt
mailbox.txt
Makefile	Documentation: add script and build target to check for broken file references	2017-10-12 11:07:42 -06:00
memory-barriers.txt	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-11-13 12:38:26 -08:00
memory-hotplug.txt
men-chameleon-bus.txt
nommu-mmap.txt
ntb.txt
numastat.txt
padata.txt
parport-lowlevel.txt
percpu-rw-semaphore.txt
phy.txt
pi-futex.txt	Documentation: fix locking rt-mutex doc refs	2017-10-19 12:56:44 -06:00
pnp.txt
preempt-locking.txt
printk-formats.txt	symbol lookup: introduce dereference_symbol_descriptor()	2018-01-09 10:45:38 +01:00
pwm.txt
rbtree.txt	rbtree: cache leftmost node internally	2017-09-08 18:26:48 -07:00
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt
SAK.txt
sgi-ioc4.txt
siphash.txt
SM501.txt
smsc_ece1099.txt
static-keys.txt	jump_label: Provide hotplug context variants	2017-08-10 12:28:59 +02:00
SubmittingPatches
svga.txt
switchtec.txt	NTB: switchtec_ntb: Update switchtec documentation with notes for NTB	2017-11-18 20:37:13 -05:00
sync_file.txt
tee.txt
this_cpu_ops.txt
unaligned-memory-access.txt
vfio-mediated-device.txt
vfio.txt
video-output.txt
xillybus.txt
xz.txt
zorro.txt