Some dates could be problematic because they reach the limits of
RTC hardware capabilities.
This patch add various of them but since it will change RTC date
it will be activated only when 'd' args is set.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
I noticed in its DSDT that one of my tablets actually is using the GPADC
pin for temperature monitoring.
The whole axp288_adc_set_ts() function is a bit weird, in the past it was
removed because it seems to make no sense, then this was reverted because
of regressions.
So I decided to test the special GPADC pin handling on this tablet.
Conclusion: not only is axp288_adc_set_ts() necessary, we need to sleep a
bit after making the AXP288_ADC_TS_PIN_CTRL changes before sampling the
GPADC, otherwise it will often (about 80% of the time) read 0 instead of
its actual value.
It seems that there is only 1 bias current source and to be able to use it
for the GPIO0 pin in GPADC mode it must be temporarily turned off for the
TS pin, but the datasheet does not mention this.
This commit adds a sleep after disabling the TS pin bias current,
fixing the GPADC more often then not wrongly returning 0.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This tool allow to set directly the time and date to a RTC device.
Unlike other tools isn't doens't use "struct timeval" or "time_t"
so it is safe for 32bits platforms when testing for y2038/2106 bug.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
For microblaze, "generic-y += siginfo.h" is doubled in asm/Kbuild and
uapi/asm/Kbuild. So, the one in the former can be simply removed.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
For m68k, "generic-y += termios.h" is doubled in asm/Kbuild and
uapi/asm/Kbuild. So, the one in the former can be simply removed.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
"generic-y += kvm_para.h" is doubled in asm/Kbuild and uapi/asm/Kbuild.
The one in the former should be simply removed because kvm_para.h is
exported.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" and "generic-y += trace_clock.h"
in order to keep the entries sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h", "generic-y += emergency-restart.h"
up in order to keep the entries sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Also, move "generic-y += kprobes.h" up in order to keep the entries
sorted.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), all (and only) headers under uapi directories are
exported, but asm-generic wrappers are still exceptions.
To complete de-coupling the uapi from kernel headers, move generic-y
of exported headers to uapi/asm/Kbuild.
With this change, "make headers_install" will just need to parse
uapi/asm/Kbuild to build up exported headers.
For arm64, "generic-y += kvm_para.h" is doubled in asm/Kbuild and
uapi/asm/Kbuild. So, the one in the former can be simply removed.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
We can always pass dst= from the top Makefile. This will simplify
the logic in Makefile.headersinst.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Commit 61562f981e ("uapi: export all arch specifics directories")
changed the dst from asm-<arch> to arch-<arch> for headers_install_all
or headers_check_all. Update the comment.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
We have no true case for the $(if $(gen), ...) conditional. Drop it
to simplify the gendir calculation.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Pull x86 fixes from Thomas Gleixner:
"The x86 updates contain:
- A fix for a longstanding PAT bug, where PAT was reported on CPUs
that do not support it, which leads to wrong caching attributes and
missing MTRR updates
- Prevent overwriting of the e820 firmware table, which causes kexec
kernels to lose the fake mptable which is stored there.
- Cleanup of the UV/BAU code, removing unused code and making local
functions static"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/e820: Introduce the bootloader provided e820_table_firmware[] table
x86/boot/e820: Rename the e820_table_firmware to e820_table_kexec
x86/boot/e820: Avoid overwriting e820_table_firmware
x86/mm/pat: Don't report PAT on CPUs that don't support it
x86/platform/uv/BAU: Minor cleanup, make some local functions static
In order to use the standard name convention rename H3LIS331DL_DRIVER_NAME
macro in H3LIS331DL_ACCEL_DEV_NAME
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull timers fixlet from Thomas Gleixner:
"Add Frederic Weisbecker as NOHZ/dyntick maintainer"
[ And an unmentioned and unrelated typo fix in the same commit? Hmm.. ]
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add Frederic Weisbecker as nohz/dyntics maintainer
Add H3LIS331DL, LIS331DL and LIS3LV02DL entries in st_accel_id_table
Fixes: 1e52fefc9b (iio: accel: Add support for the h3lis331dl accel)
Fixes: bbf5f037fa (iio: st_accel: support the LIS331DL sensor)
Fixes: 3acddf74f8 (iio: st-sensors: add support for lis3lv02d accel)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull smp/hotplug fix from Thomas Gleixner:
"A single fix for a brown paperbag bug:
The unparking of the initial percpu threads of an upcoming CPU happens
right now on the idle task, but that's wrong as the unpark function
might sleep. Move it to the control CPU."
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp/hotplug: Move unparking of percpu threads to the control CPU
Making the const array startup_lookup static rather having it on the
stack saves 69 bytes. Add in missing int specifier to clean up a
checkpatch warning.
Before:
text data bss dec hex filename
10297 2800 128 13225 33a9 drivers/iio/adc/at91-sama5d2_adc.o
After:
text data bss dec hex filename
10140 2888 128 13156 3364 drivers/iio/adc/at91-sama5d2_adc.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Making the const array init_data static rather having it on the
stack saves us a couple hundreds of bytes:
Before:
text data bss dec hex filename
3175 848 0 4023 fb7 drivers/iio/accel/da311.o
After:
text data bss dec hex filename
2860 936 0 3796 ed4 drivers/iio/accel/da311.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.
In case of NULL print error message and return -ENODEV
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.
In case of NULL print error message and return -ENODEV
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull scheduler fixes from Thomas Gleixner:
"This scheduler update provides:
- The (hopefully) final fix for the vtime accounting issues which
were around for quite some time
- Use types known to user space in UAPI headers to unbreak user space
builds
- Make load balancing respect the current scheduling domain again
instead of evaluating unrelated CPUs"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/headers/uapi: Fix linux/sched/types.h userspace compilation errors
sched/fair: Fix load_balance() affinity redo path
sched/cputime: Accumulate vtime on top of nsec clocksource
sched/cputime: Move the vtime task fields to their own struct
sched/cputime: Rename vtime fields
sched/cputime: Always set tsk->vtime_snap_whence after accounting vtime
vtime, sched/cputime: Remove vtime_account_user()
Revert "sched/cputime: Refactor the cputime_adjust() code"
Pull perf fixes from Thomas Gleixner:
"A couple of fixes for perf and kprobes:
- Add he missing exclude_kernel attribute for the precise_ip level so
!CAP_SYS_ADMIN users get the proper results.
- Warn instead of failing completely when perf has no unwind support
for a particular architectiure built in.
- Ensure that jprobes are at function entry and not at some random
place"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kprobes: Ensure that jprobe probepoints are at function entry
kprobes: Simplify register_jprobes()
kprobes: Rename [arch_]function_offset_within_entry() to [arch_]kprobe_on_func_entry()
perf unwind: Do not fail due to missing unwind support
perf evsel: Set attr.exclude_kernel when probing max attr.precise_ip
Pull locking fixes from Thomas Gleixner:
- Fix the EINTR logic in rwsem-spinlock to avoid double locking by a
writer and a reader
- Add a missing include to qspinlocks
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/qspinlock: Explicitly include asm/prefetch.h
locking/rwsem-spinlock: Fix EINTR branch in __down_write_common()
The return value from tsl2x7x_invoke_change() was not checked in most
places in the driver. This patch adds the proper error checks. The
return values inside tsl2x7x_invoke_change() are now checked by
this patch as well.
Previously, if there was an error turning the chip back on, then the
driver would attempt to turn the chip off and incorrectly return
success. The code to power off the chip is removed by this patch
since we should fail fast.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This driver in some cases can busy wait for upwards of 15ms. Since the
kernel at this point is not running in atomic context, and is running in
process context, we can safely use usleep_range() instead. This patch
changes the two occurrences of mdelay() to usleep_range().
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
tsl2x7x_read_thresh() and tsl2x7x_write_thresh() currently assumes
that IIO_EV_INFO_VALUE is the only iio_event_info that will be
passed in. This patch refactors these two functions so that
additional iio_event_infos can be passed in. The functions are
renamed from tsl2x7x_{read,write}_thresh() to
tsl2x7x_{read,write}_event_value(). This patch also adds the
missing return value check to tsl2x7x_invoke_change() since this
was previously missing. This patch is in preparation for moving
the in_intensity0_thresh_period and in_proximity0_thresh_period sysfs
attributes to be created by iio_event_spec.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The calibration function calls i2c_smbus_write_byte() and
i2c_smbus_read_byte(). These two function calls are replaced with a
single call to i2c_smbus_read_byte_data() by this patch. This patch
also removes an unnecessary call that reads the CNTRL register
a second time. One of the error paths returned -1 if the ADC was not
enabled and this patch changes that return value to -EINVAL.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
tsl2x7x_i2c_read() would call i2c_smbus_write_byte() and
i2c_smbus_read_byte(). These two i2c functions can be replaced with a
single call to i2c_smbus_read_byte_data(). This patch removes the
tsl2x7x_i2c_read() function and replaces all occurrences with a call to
i2c_smbus_read_byte_data().
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull irq fixes from Thomas Gleixner:
- A few fixes mopping up the fallout of the big irq overhaul
- Move the interrupt resource management logic out of the spin locked,
irq disabled region to avoid unnecessary restrictions of the resource
callbacks
- Preparation for reworking the per cpu irq request function.
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqdomain: Allow ACPI device nodes to be used as irqdomain identifiers
genirq/debugfs: Remove redundant NULL pointer check
genirq: Allow to pass the IRQF_TIMER flag with percpu irq request
genirq/timings: Move free timings out of spinlocked region
genirq: Move irq resource handling out of spinlocked region
genirq: Add mutex to irq desc to serialize request/free_irq()
genirq: Move bus locking into __setup_irq()
genirq: Force inlining of __irq_startup_managed to prevent build failure
genirq/debugfs: Fix build for !CONFIG_IRQ_DOMAIN
The TSL2X7X driver has a custom power_state sysfs attribute. Remove this
attribute since the runtime power management code provides a sysfs
attribute to control the power state of the device.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add device tree support for the tsl2x7x IIO driver with no custom
properties. The device tree documentation is in a separate commit so
that the changes to trivial-devices.txt can go in via the device
tree subsystem.
Signed-off-by: Brian Masney <masneyb@onstation.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Mark Rutland <mark.rutland@arm.com>
CC: devicetree@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This patch adds support for Diolan DLN2 ADC via IIO's ADC interface.
ADC is the fourth and final component of the DLN2 for the kernel.
Signed-off-by: Jack Andersen <jackoalan@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Pull objtool fix from Thomas Gleixner:
"A fix to the objtool sibling call detection logic to distinguish
normal jumps inside a function from a real sibling call"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix sibling call detection logic
feature, which allows ext4 directories to support over 2 billion
directory entries (assuming ~64 byte file names; in practice, users
will run into practical performance limits first.) This feature was
originally written by the Lustre team, and credit goes to Artem
Blagodarenko from Seagate for getting this feature upstream.
The second major major feature allows ext4 to support extended
attribute values up to 64k. This feature was also originally from
Lustre, and has been enhanced by Tahsin Erdogan from Google with a
deduplication feature so that if multiple files have the same xattr
value (for example, Windows ACL's stored by Samba), only one copy will
be stored on disk for encoding and caching efficiency.
We also have the usual set of bug fixes, cleanups, and optimizations.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"The first major feature for ext4 this merge window is the largedir
feature, which allows ext4 directories to support over 2 billion
directory entries (assuming ~64 byte file names; in practice, users
will run into practical performance limits first.) This feature was
originally written by the Lustre team, and credit goes to Artem
Blagodarenko from Seagate for getting this feature upstream.
The second major major feature allows ext4 to support extended
attribute values up to 64k. This feature was also originally from
Lustre, and has been enhanced by Tahsin Erdogan from Google with a
deduplication feature so that if multiple files have the same xattr
value (for example, Windows ACL's stored by Samba), only one copy will
be stored on disk for encoding and caching efficiency.
We also have the usual set of bug fixes, cleanups, and optimizations"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits)
ext4: fix spelling mistake: "prellocated" -> "preallocated"
ext4: fix __ext4_new_inode() journal credits calculation
ext4: skip ext4_init_security() and encryption on ea_inodes
fs: generic_block_bmap(): initialize all of the fields in the temp bh
ext4: change fast symlink test to not rely on i_blocks
ext4: require key for truncate(2) of encrypted file
ext4: don't bother checking for encryption key in ->mmap()
ext4: check return value of kstrtoull correctly in reserved_clusters_store
ext4: fix off-by-one fsmap error on 1k block filesystems
ext4: return EFSBADCRC if a bad checksum error is found in ext4_find_entry()
ext4: return EIO on read error in ext4_find_entry
ext4: forbid encrypting root directory
ext4: send parallel discards on commit completions
ext4: avoid unnecessary stalls in ext4_evict_inode()
ext4: add nombcache mount option
ext4: strong binding of xattr inode references
ext4: eliminate xattr entry e_hash recalculation for removes
ext4: reserve space for xattr entries/names
quota: add get_inode_usage callback to transfer multi-inode charges
ext4: xattr inode deduplication
...
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Merge tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt
Pull fscrypt updates from Ted Ts'o:
"Add support for 128-bit AES and some cleanups to fscrypt"
* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
fscrypt: make ->dummy_context() return bool
fscrypt: add support for AES-128-CBC
fscrypt: inline fscrypt_free_filename()
This series includes fixes to mlx5 driver:
- Compilation warnings and issues introduced on v4.12
- Initialize CEE's getpermhwaddr address buffer to 0xff
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Merge tag 'mlx5-fixes-2017-07-09' of https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-fixes-2017-07-09
This series includes fixes to mlx5 driver:
- Compilation warnings and issues introduced on v4.12
- Initialize CEE's getpermhwaddr address buffer to 0xff
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a testcase for kprobe event naming. This testcase checks whether the
kprobe events can automatically ganerate its event name on normal
function and dot-suffixed function. Also it checks whether the kprobe
events can correctly define new event with given event name and group
name.
Link: http://lkml.kernel.org/r/61ae96fd1fcd14ee652c8b6525c218b8661bb0d2.1499453040.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
[Updated tests to use vfs_read and symbols with '.isra.',
added check for kprobe_events and a command to clear it on exit,
various additional checks and tests]
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Add a kprobes test to ensure that we are able to add a probe on a
module function using 'p <mod>:<func>' format, with/without having to
specify a probe name.
Link: http://lkml.kernel.org/r/2d8087e25a7ad9206f3e2b7b4bb0c3c86eaa38af.1499453040.git.naveen.n.rao@linux.vnet.ibm.com
Suggested-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
KPROBES_ON_FTRACE is only available on powerpc64le. Update comment to
clarify this.
Also, we should use an offset of 8 to ensure that the probe does not
fall on ftrace location. The current offset of 4 will fall before the
function local entry point and won't fire, while an offset of 12 or 16
will fall on ftrace location. Offset 8 is currently guaranteed to not be
the ftrace location.
Link: http://lkml.kernel.org/r/3d32e8fa076070e83527476fdfa3a747bb9a1a3a.1499453040.git.naveen.n.rao@linux.vnet.ibm.com
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
When we derive event names, convert some expected symbols (such as ':'
used to specify module:name and '.' present in some symbols) into
underscores so that the event name is not rejected.
Before this patch:
# echo 'p kobject_example:foo_store' > kprobe_events
trace_kprobe: Failed to allocate trace_probe.(-22)
-sh: write error: Invalid argument
After this patch:
# echo 'p kobject_example:foo_store' > kprobe_events
# cat kprobe_events
p:kprobes/p_kobject_example_foo_store_0 kobject_example:foo_store
Link: http://lkml.kernel.org/r/66c189e09e71361aba91dd4a5bd146a1b62a7a51.1499453040.git.naveen.n.rao@linux.vnet.ibm.com
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
