Add support for bpf_arch_text_poke() and arch_prepare_bpf_trampoline()
for powerpc64 -mprofile-kernel.
We set aside space for two stubs at the beginning of each bpf program.
These stubs are used if having to branch to locations outside the range
of a branch instruction.
BPF Trampolines adhere to
With CONFIG_MPROFILE_KERNEL, ftrace location is within the first 5
instructions of a function. Override ftrace_location_lookup() to search
within this range for the ftrace location.
Also convert kprobe_lookup_name() to utilize this function.
Signed-off-by: Naveen N. Rao
---
arch/powerpc/kernel/
Add a new function ftrace_location_lookup() that can be used to
determine the exact ftrace location around function entry. This is
useful on architectures where the ftrace location is not the very first
instruction in a function. Such architectures can override this function
to search for ftrace lo
This is an early RFC series that adds support for BPF Trampolines on
powerpc64. Some of the selftests are passing for me, but this needs more
testing and I've likely missed a few things as well. A review of the
patches and feedback about the overall approach will be great.
This series depends on
On large config LPARs (having 192 and more cores), Linux fails to boot
due to insufficient memory in the first memblock. It is due to the
memory reservation for the crash kernel which starts at 128MB offset of
the first memblock. This memory reservation for the crash kernel doesn't
leave enough spa
On 06. 02. 22, 16:48, Walt Drummond wrote:
When triggered by pressing the VSTATUS key or calling the TIOCSTAT
ioctl, the n_tty line discipline will display a message on the user's
tty that provides basic information about the system and an
'interesting' process in the current foreground process g
Christophe Leroy writes:
> Le 03/02/2022 à 06:39, Michael Ellerman a écrit :
>> Luis Chamberlain writes:
>>> On Thu, Jan 27, 2022 at 11:28:12AM +, Christophe Leroy wrote:
book3s/32 and 8xx have a separate area for allocating modules,
defined by MODULES_VADDR / MODULES_END.
There were lot of styleguide errors raised by checkpatch.pl against
drivers/tty/* which I have fixed. There is zero code change apart from
changes related to styleguide. checkpatch.pl returns 0 error for
style guide now.
---
drivers/tty/amiserial.c| 285 ++---
Drop I2C device-probing classes from platform variant of the PASemi
controller as it is only used on platforms where I2C devices should
be instantiated in devicetree. (The I2C_CLASS_DEPRECATED flag is not
raised as up to this point no devices relied on the old behavior.)
Fixes: d88ae2932df0 ("i2c:
On Mon, Feb 07, 2022 at 12:33:07AM +0530, Ankit Kumar Pandey wrote:
> There were lot of styleguide errors raised by checkpatch.pl against
> drivers/tty/* which I have fixed. There is zero code change apart from
> changes related to styleguide. checkpatch.pl returns 0 error for
> style guide now.
>
On Sun, Feb 06, 2022 at 07:48:54AM -0800, Walt Drummond wrote:
> When triggered by pressing the VSTATUS key or calling the TIOCSTAT
> ioctl, the n_tty line discipline will display a message on the user's
> tty that provides basic information about the system and an
> 'interesting' process in the cu
On Sun, Feb 06, 2022 at 07:48:53AM -0800, Walt Drummond wrote:
> Add definitions for the VSTATUS control character, and the NOKERNINFO
> local control flag in the termios struct, and add an ioctl number for
> the ioctl TIOCSTAT. Also add a default VSTATUS character (Ctrl-T)
> default valuses in te
When triggered by pressing the VSTATUS key or calling the TIOCSTAT
ioctl, the n_tty line discipline will display a message on the user's
tty that provides basic information about the system and an
'interesting' process in the current foreground process group, eg:
load: 0.58 cmd: sleep 744474 [s
Add definitions for the VSTATUS control character, and the NOKERNINFO
local control flag in the termios struct, and add an ioctl number for
the ioctl TIOCSTAT. Also add a default VSTATUS character (Ctrl-T)
default valuses in termios.c_cc. Do this for all architectures.
Signed-off-by: Walt Drummo
Refactor the implementation of n_tty_write() into do_n_tty_write(),
and change n_tty_write() to call do_n_tty_write() after acquiring
tty.termios_rwsem.
This allows the n_tty line dicipline to write to a user tty via
do_n_tty_write() when already holding tty.termios_rwsem.
Signed-off-by: Walt Dru
This patchset adds TTY status message request feature to the n_tty
line dicipline. This feature prints a brief message containing basic
system and process group information to a user's TTY in response to a
new control character in the line dicipline (default Ctrl-T) or the
TIOCSTAT ioctl. The mes
On 04/02/2022 18.59, Martin Povišer wrote:
> Drop I2C device-probing classes from platform variant of the PASemi
> controller as it is only used on platforms where I2C devices should
> be instantiated in devicetree. (The I2C_CLASS_DEPRECATED flag is not
> raised as up to this point no devices relie
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