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Impact: avoid section mismatch warning, clean up
The dynamic ftrace determines which nop is safe to use at start up.
When it finds a safe nop for patching, it sets a pointer called ftrace_nop
to point to the code. All call sites are then patched to this nop.
Later, when tracing is turned on, this ftrace_nop variable is again used
to compare the location to make sure it is a nop before we update it to
an mcount call. If this fails just once, a warning is printed and ftrace
is disabled.
Rakib Mullick noted that the code that sets up the nop is a .init section
where as the nop itself is in the .text section. This is needed because
the nop is used later on after boot up. The problem is that the test of the
nop jumps back to the setup code and causes a "section mismatch" warning.
Rakib first recommended to convert the nop to .init.text, but as stated
above, this would fail since that text is used later.
The real solution is to extend Rabik's patch, and to make the ftrace_nop
into an array, and just save the code from the assembly to this array.
Now the section can stay as an init section, and we have a nop to use
later on.
Reported-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
math-emu: Fix thinko in _FP_DIV
math-emu: Fix signalling of underflow and inexact while packing result.
sparc: Add checkstack support
sparc: correct section of current_pc()
sparc: correct section of apc_no_idle
sparc64: Fix race in arch/sparc64/kernel/trampoline.S
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* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: drivers/ide/generic.c -> drivers/ide/ide-pci-generic.c
ide-disk: set non-rotational queue flag for SSD and CF devices
ide-cd: add TEAC CD-224E to the NO_AUTOCLOSE list
ide: Add tx4938ide driver (v2)
TXx9: Add TX4938 ATA support (v3)
ide: Add tx4939ide driver (v6)
ide: two more pci_ioremap_bar() conversions
pci: use pci_ioremap_bar() in drivers/ide
sgiioc4: use ide_host_add() (take 2)
sgiioc4: fix error cleanup path (take 2)
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] pxa: corgi backlight driver should not select ssp drivers
[ARM] 5321/1: Kirkwood: fix typo in Makefile
[ARM] 5320/1: fix assembly constraints in implementation of do_div()
[ARM] 5318/1: Swap the PRRR and NMRR values in proc-v7.S
[ARM] 5316/1: AT91: oops (regression) fix on gpio irq
[ARM] msm: vreg interface to msm7k pmic
[ARM] msm: dma: various basic dma improvements and bugfixes
[ARM] msm: clock: provide clk_*() api support for
[ARM] msm: clean up iomap and devices
[ARM] msm: add proc_comm support, necessary for clock and power control
[ARM] msm: rename ARCH_MSM7X00A to ARCH_MSM
[ARM] pxa/spitz: fix unbalance parenthesis in header file spitz.h
[ARM] pxa: update {corgi,spitz}_defconfig to favor SPI-based drivers
[ARM] pxa: fix the corgi_ssp.c dependency issue in {corgi,spitz}_defconfig
Revert "[ARM] pxa/corgi: remove now unused corgi_ssp.c and corgi_lcd.c"
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
backlight: Add driver for Tabletkiosk Sahara TouchIT-213 Tablet PC
backlight: da903x: Add backlight driver for DA9030/DA9034
tosa: add support for bl/lcd driver
backlight: add support for Sharp SL-6000 LCD and backlight drivers
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Add a helper routine to register tx4938ide driver and use it on
RBTX4938 board.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: fix section mismatch warning - apic_x2apic_phys
x86: fix section mismatch warning - apic_x2apic_cluster
x86: fix section mismatch warning - apic_x2apic_uv_x
x86: fix section mismatch warning - apic_physflat
x86: fix section mismatch warning - apic_flat
x86: memtest fix use of reserve_early()
x86 syscall.h: fix argument order
x86/tlb_uv: remove strange mc146818rtc include
x86: remove redundant KERN_DEBUG on pr_debug
x86: do_boot_cpu - check if we have ESR register
x86: MAINTAINERS change for AMD microcode patch loader
x86/proc: fix /proc/cpuinfo cpu offline bug
x86: call dmi-quirks for HP Laptops after early-quirks are executed
x86, kexec: fix hang on i386 when panic occurs while console_sem is held
MCE: Don't run 32bit machine checks with interrupts on
x86: SB600: skip IRQ0 override if it is not routed to INT2 of IOAPIC
x86: make variables static
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git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits)
proc: remove fs/proc/proc_misc.c
proc: move /proc/vmcore creation to fs/proc/vmcore.c
proc: move pagecount stuff to fs/proc/page.c
proc: move all /proc/kcore stuff to fs/proc/kcore.c
proc: move /proc/schedstat boilerplate to kernel/sched_stats.h
proc: move /proc/modules boilerplate to kernel/module.c
proc: move /proc/diskstats boilerplate to block/genhd.c
proc: move /proc/zoneinfo boilerplate to mm/vmstat.c
proc: move /proc/vmstat boilerplate to mm/vmstat.c
proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c
proc: move /proc/buddyinfo boilerplate to mm/vmstat.c
proc: move /proc/vmallocinfo to mm/vmalloc.c
proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c
proc: move /proc/slab_allocators boilerplate to mm/slab.c
proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c
proc: move /proc/stat to fs/proc/stat.c
proc: move rest of /proc/partitions code to block/genhd.c
proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c
proc: move /proc/devices code to fs/proc/devices.c
proc: move rest of /proc/locks to fs/locks.c
...
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Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'v28-range-hrtimers-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
hrtimers: add missing docbook comments to struct hrtimer
hrtimers: simplify hrtimer_peek_ahead_timers()
hrtimers: fix docbook comments
DECLARE_PER_CPU needs linux/percpu.h
hrtimers: fix typo
rangetimers: fix the bug reported by Ingo for real
rangetimer: fix BUG_ON reported by Ingo
rangetimer: fix x86 build failure for the !HRTIMERS case
select: fix alpha OSF wrapper
select: fix alpha OSF wrapper
hrtimer: peek at the timer queue just before going idle
hrtimer: make the futex() system call use the per process slack value
hrtimer: make the nanosleep() syscall use the per process slack
hrtimer: fix signed/unsigned bug in slack estimator
hrtimer: show the timer ranges in /proc/timer_list
hrtimer: incorporate feedback from Peter Zijlstra
hrtimer: add a hrtimer_start_range() function
hrtimer: another build fix
hrtimer: fix build bug found by Ingo
hrtimer: make select() and poll() use the hrtimer range feature
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* git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
avr32: Fix GPIO initcall breakage
avr32: Scale loops_per_jiffy when cpu frequency changes
avr32: Fix bug in LCD pin setup on port C
avr32: Add defconfig for the favr-32 board
avr32: Add defconfig for the mimc200 board
avr32: Add MIMC200 board support
avr32: Fix MIMC200 board use of SPD network pins
avr32: add support for EarthLCD Favr-32 board
avr32: Add support for EVKLCD10X addon boards
avr32: Kconfig: Remove pointless if around atstk1000 include
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* git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev: (66 commits)
[PATCH] kill the rest of struct file propagation in block ioctls
[PATCH] get rid of struct file use in blkdev_ioctl() BLKBSZSET
[PATCH] get rid of blkdev_locked_ioctl()
[PATCH] get rid of blkdev_driver_ioctl()
[PATCH] sanitize blkdev_get() and friends
[PATCH] remember mode of reiserfs journal
[PATCH] propagate mode through swsusp_close()
[PATCH] propagate mode through open_bdev_excl/close_bdev_excl
[PATCH] pass fmode_t to blkdev_put()
[PATCH] kill the unused bsize on the send side of /dev/loop
[PATCH] trim file propagation in block/compat_ioctl.c
[PATCH] end of methods switch: remove the old ones
[PATCH] switch sr
[PATCH] switch sd
[PATCH] switch ide-scsi
[PATCH] switch tape_block
[PATCH] switch dcssblk
[PATCH] switch dasd
[PATCH] switch mtd_blkdevs
[PATCH] switch mmc
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (46 commits)
[PATCH] fs: add a sanity check in d_free
[PATCH] i_version: remount support
[patch] vfs: make security_inode_setattr() calling consistent
[patch 1/3] FS_MBCACHE: don't needlessly make it built-in
[PATCH] move executable checking into ->permission()
[PATCH] fs/dcache.c: update comment of d_validate()
[RFC PATCH] touch_mnt_namespace when the mount flags change
[PATCH] reiserfs: add missing llseek method
[PATCH] fix ->llseek for more directories
[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent
[PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookup
[PATCH vfs-2.6 4/6] vfs: remove unnecessary fsnotify_d_instantiate()
[PATCH vfs-2.6 3/6] vfs: add __d_instantiate() helper
[PATCH vfs-2.6 2/6] vfs: add d_ancestor()
[PATCH vfs-2.6 1/6] vfs: replace parent == dentry->d_parent by IS_ROOT()
[PATCH] get rid of on-stack dentry in udf
[PATCH 2/2] anondev: switch to IDA
[PATCH 1/2] anondev: init IDR statically
[JFFS2] Use d_splice_alias() not d_add() in jffs2_lookup()
[PATCH] Optimise NFS readdir hack slightly.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits)
x86: canonicalize remaining header guards
x86: drop double underscores from header guards
x86: Fix ASM_X86__ header guards
x86, um: get rid of uml-config.h
x86, um: get rid of arch/um/Kconfig.arch
x86, um: get rid of arch/um/os symlink
x86, um: get rid of excessive includes of uml-config.h
x86, um: get rid of header symlinks
x86, um: merge Kconfig.i386 and Kconfig.x86_64
x86, um: get rid of sysdep symlink
x86, um: trim the junk from uml ptrace-*.h
x86, um: take vm-flags.h to sysdep
x86, um: get rid of uml asm/arch
x86, um: get rid of uml highmem.h
x86, um: get rid of uml unistd.h
x86, um: get rid of system.h -> system.h include
x86, um: uml atomic.h is not needed anymore
x86, um: untangle uml ldt.h
x86, um: get rid of more uml asm/arch uses
x86, um: remove dead header (uml module-generic.h; never used these days)
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (123 commits)
dock: make dock driver not a module
ACPI: fix ia64 build warning
ACPI: hack around sysfs warning with link order
ACPI suspend: fix build warning when CONFIG_ACPI_SLEEP=n
intel_menlo: fix build warning
panasonic-laptop: fix build
ACPICA: Update version to 20080926
ACPICA: Add support for zero-length buffer-to-string conversions
ACPICA: New: Validation for predefined ACPI methods/objects
ACPICA: Fix for implicit return compatibility
ACPICA: Fixed a couple memory leaks associated with "implicit return"
ACPICA: Optimize buffer allocation procedure
ACPICA: Fix possible memory leak, error exit path
ACPICA: Fix fault after mem allocation failure in AML parser
ACPICA: Remove unused ACPI register bit definition
ACPICA: Update version to 20080829
ACPICA: Fix possible memory leak in acpi_ns_get_external_pathname
ACPICA: Cleanup for internal Reference Object
ACPICA: Update comments - no functional changes
ACPICA: Update for Reference ACPI_OPERAND_OBJECT
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
sh: asm/gpio.h needs linux/kernel.h for might_sleep()/WARN_ON().
sh: mach-highlander: Handle SCIF pinmuxing on R7785RP.
sh: sh7785 pinmux support
sh: update defconfigs.
sh: Kill off unused p1fc divisors from SH7763 clk fwk.
sh: improve pinmux support for single direction pins
sh: use 10MHz VIO_CLK for ov772x on Migo-R
sh: Update gpio_set_value() pin value handling
sh: update ov772x byte order on Migo-R
rtc: Add R2025S/D comment to rs5c372 Kconfig entry.
sh: Export cache flush routines needed by sh_eth on SH7619.
sh: Wire up oops reporting in the die notifier chain.
sh: ap325rxa: Kill off unused port definitions.
sh: Hook up PB0->PB7 input-only pins in SH7203 PFC.
sh: ap325rxa: Move off of hardcoded pinmux for flctl initialization.
sh: add support FLCTL for ap325rxa board
sh: gpio: Stub in dummy GPIO<->IRQ mapping routines.
sh: rsk7203: leds-gpio support for RSK+ LEDs.
sh: gpio: Include asm-generic/gpio.h for non-gpiolib stubs.
sh: fix soc-camera compile breakage on Migo-R.
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git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile: (21 commits)
OProfile: Fix buffer synchronization for IBS
oprofile: hotplug cpu fix
oprofile: fixing whitespaces in arch/x86/oprofile/*
oprofile: fixing whitespaces in arch/x86/oprofile/*
oprofile: fixing whitespaces in drivers/oprofile/*
x86/oprofile: add the logic for enabling additional IBS bits
x86/oprofile: reordering functions in nmi_int.c
x86/oprofile: removing unused function parameter in add_ibs_begin()
oprofile: more whitespace fixes
oprofile: whitespace fixes
OProfile: Rename IBS sysfs dir into "ibs_op"
OProfile: Rework string handling in setup_ibs_files()
OProfile: Rework oprofile_add_ibs_sample() function
oprofile: discover counters for op ppro too
oprofile: Implement Intel architectural perfmon support
oprofile: Don't report Nehalem as core_2
oprofile: drop const in num counters field
Revert "Oprofile Multiplexing Patch"
x86, oprofile: BUG: using smp_processor_id() in preemptible code
x86/oprofile: fix on_each_cpu build error
...
Manually fixed trivial conflicts in
drivers/oprofile/{cpu_buffer.c,event_buffer.h}
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* git://git.infradead.org/iommu-2.6:
Admit to maintaining VT-d, for my sins.
dmar: fix uninitialised 'ret' variable in dmar_parse_dev()
intel-iommu: use coherent_dma_mask in alloc_coherent
amd_iommu: fix nasty bug that caused ILLEGAL_DEVICE_TABLE_ENTRY errors
intel-iommu: IA64 support
dmar: remove the quirk which disables dma-remapping when intr-remapping enabled
dmar: Use queued invalidation interface for IOTLB and context invalidation
dmar: context cache and IOTLB invalidation using queued invalidation
dmar: use spin_lock_irqsave() in qi_submit_sync()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
genirq: NULL struct irq_desc's member 'name' in dynamic_irq_cleanup()
genirq: fix off by one and coding style
genirq: fix set_irq_type() when recording trigger type
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* git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6:
xtensa: Add config files for Diamond 232L - Rev B processor variant
xtensa: Fix io regions
xtensa: Add support for the Sonic Ethernet device for the XT2000 board.
xtensa: replace remaining __FUNCTION__ occurrences
xtensa: use newer __SPIN_LOCK_UNLOCKED macro
XTENSA: warn about including <asm/rwsem.h> directly.
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* git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (53 commits)
powerpc: Support for relocatable kdump kernel
powerpc: Don't use a 16G page if beyond mem= limits
powerpc: Add del_node() for early boot code to prune inapplicable devices.
powerpc: Further compile fixup for STRICT_MM_TYPECHECKS
powerpc: Remove empty #else from signal_64.c
powerpc: Move memory size print into common show_cpuinfo for 32-bit
hvc_console: Remove __devexit annotation of hvc_remove()
hvc_console: Add support for tty window resizing
hvc_console: Fix loop if put_char() returns 0
hvc_console: Add tty driver flag TTY_DRIVER_RESET_TERMIOS
hvc_console: Add a hangup notifier for backends
powerpc/83xx: Add DS1339 RTC support for MPC8349E-mITX boards .dts
powerpc/83xx: Add support for MCU microcontroller in .dts files
powerpc/85xx: Move mpc8572ds.dts to address-cells/size-cells = <2>
of/spi: Support specifying chip select as active high via device tree
powerpc: Remove device_type = "board_control" properties in .dts files
i2c-cpm: Suppress autoprobing for devices
powerpc/85xx: Fix mpc8536ds dma interrupt numbers
powerpc/85xx: Enable enhanced functions for 8536 TSEC
powerpc: Delete unused prom_strtoul and prom_memparse
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git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb
* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: (47 commits)
uwb: wrong sizeof argument in mac address compare
uwb: don't use printk_ratelimit() so often
uwb: use kcalloc where appropriate
uwb: use time_after() when purging stale beacons
uwb: add credits for the original developers of the UWB/WUSB/WLP subsystems
uwb: add entries in the MAINTAINERS file
uwb: depend on EXPERIMENTAL
wusb: wusb-cbaf (CBA driver) sysfs ABI simplification
uwb: document UWB and WUSB sysfs files
uwb: add symlinks in sysfs between radio controllers and PALs
uwb: dont tranmit identification IEs
uwb: i1480/GUWA100U: fix firmware download issues
uwb: i1480: remove MAC/PHY information checking function
uwb: add Intel i1480 HWA to the UWB RC quirk table
uwb: disable command/event filtering for D-Link DUB-1210
uwb: initialize the debug sub-system
uwb: Fix handling IEs with empty IE data in uwb_est_get_size()
wusb: fix bmRequestType for Abort RPipe request
wusb: fix error path for wusb_set_dev_addr()
wusb: add HWA host controller driver
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] clps711x: add sparsemem definitions
[ARM] 5315/1: Fix section mismatch warning (sa1111)
[ARM] Orion: activate workaround for 88f6183 SPI clock erratum
[ARM] Orion: instantiate the dsa switch driver
[ARM] mv78xx0: force link speed/duplex on eth2/eth3
[ARM] remove extra brace in arch/arm/mach-pxa/trizeps4.c
[ARM] balance parenthesis in header file
[ARM] pxa: fix trizeps PCMCIA build
[ARM] pxa: fix trizeps defconfig
[ARM] dmabounce requires ZONE_DMA
[ARM] 5303/1: period_cycles should be greater than 1
[ARM] 5310/1: Fix cache flush functions for ARMv4
[ARM] pxa: fix 3bca103a1e658d23737d20e1989139d9ca8973bf
[ARM] pxa: fix redefinition of NR_IRQS
[ARM] S3C24XX: Fix redefine of DEFINE_TIMER() in s3c24xx pwm-clock.c
[ARM] S3C2443: Fix HCLK rate
[ARM] S3C24XX: Serial driver debug depends on DEBUG_LL
[ARM] S3C24XX: pwm-clock set_parent mask fix
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (41 commits)
[IA64] Fix annoying IA64_TR_ALLOC_MAX message.
[IA64] kill sys32_pipe
[IA64] remove sys32_pause
[IA64] Add Variable Page Size and IA64 Support in Intel IOMMU
ia64/pv_ops: paravirtualized instruction checker.
ia64/xen: a recipe for using xen/ia64 with pv_ops.
ia64/pv_ops: update Kconfig for paravirtualized guest and xen.
ia64/xen: preliminary support for save/restore.
ia64/xen: define xen machine vector for domU.
ia64/pv_ops/xen: implement xen pv_time_ops.
ia64/pv_ops/xen: implement xen pv_irq_ops.
ia64/pv_ops/xen: define the nubmer of irqs which xen needs.
ia64/pv_ops/xen: implement xen pv_iosapic_ops.
ia64/pv_ops/xen: paravirtualize entry.S for ia64/xen.
ia64/pv_ops/xen: paravirtualize ivt.S for xen.
ia64/pv_ops/xen: paravirtualize DO_SAVE_MIN for xen.
ia64/pv_ops/xen: define xen paravirtualized instructions for hand written assembly code
ia64/pv_ops/xen: define xen pv_cpu_ops.
ia64/pv_ops/xen: define xen pv_init_ops for various xen initialization.
ia64/pv_ops/xen: elf note based xen startup.
...
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The entire file of ftrace.c in the arch code needs to be marked
as notrace. It is much cleaner to do this from the Makefile with
CFLAGS_REMOVE_ftrace.o.
[ powerpc already had this in its Makefile. ]
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The arch dependent function ftrace_mcount_set was only used by the daemon
start up code. This patch removes it.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The ftrace daemon is complex and can cause nasty races if something goes
wrong. Since it affects all of the kernel, this patch disables dynamic
ftrace from any arch that depends on the daemon. Until the archs are
ported over to the new MCOUNT_RECORD method, I am disabling dynamic
ftrace from them.
Note: I am leaving in the arch/<arch>/kernel/ftrace.c code alone since
that can be used when the arch is ported to MCOUNT_RECORD. To port
the arch to MCOUNT_RECORD, the scripts/recordmcount.pl needs to be
updated. I will make that easier to do for 2.6.29. For 28, we will keep
the archs disabled.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Andrew Morton suggested using the proper API for reading and writing
kernel areas that might fault.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Add comments to explain what is happening in the x86 arch ftrace code.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Have the ftrace_modify_code return error values:
-EFAULT on error of reading the address
-EINVAL if what is read does not match what it expected
-EPERM if the write fails to update after a successful match.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
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Add essential system devices, including GPIO controllers, automatically
at core_initcall time. This ensures that the devices are there when the
PIO driver gets initialized at postcore_initcall, fixing a bug exposed
by commit d6634db8fe1784d0a8e4e156970fec034708446e "avr32: Use
platform_driver_probe for pio platform driver".
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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The loops_per_jiffy variable isn't updated when cpufreq changes the CPU
frequency. This could cause udelay() and friends to produce wrong
delays.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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Bug was introduced with the new at32_select_periph function.
Signed-off-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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Those inline assembly segments using the umlal instruction must have
the & modifier so to be sure that a purely input register won't alias
one of the registers used as input+output. In most cases, the inputs
are still used after the outputs are touched, and most binutil versions
insist on "rdhi, rdlo and rm must all be different" even for ARMv6+.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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and move it to fs/proc/meminfo.c while I'm at it.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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It's not the final state, but it allows moving ->readdir() instances
to passing filldir return value to caller of vfs_readdir().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Canonicalize a few remaining header guards, with the exception for
those which are still in subarchitecture directories.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Drop double underscores from header guards in arch/x86/include. They
are used inconsistently, and are not necessary.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Change header guards named "ASM_X86__*" to "_ASM_X86_*" since:
a. the double underscore is ugly and pointless.
b. no leading underscore violates namespace constraints.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Take a few symbols we need into kern_constants.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Teach scripts/kconfig/Makefile and top-level Makefile that arch/*/Makefile
is allowed to say Kconfig := <whatever I want instead of arch/blah/Kconfig>.
Rewrite arch/um/Kconfig and arch/um/Kconfig.<subarch> so that the latter
would be top-level one (and include the pieces of the former).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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we can get DEV_NULL defined for arch/um/drivers/null.c in less
convoluted ways, TYVM...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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