Implement the __add_wait_queue_entry_tail() function in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelig

Implement the __add_wait_queue_entry_tail() function in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

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Implement the might_sleep_if() function macro in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Netw

Implement the might_sleep_if() function macro in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

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Rename two structure field members while keeping backwards compatibility in
the LinuxKPI. Add a comment saying in which Linux version this change was made.

Submitted by: Johannes Lundberg <johalun0@

Rename two structure field members while keeping backwards compatibility in
the LinuxKPI. Add a comment saying in which Linux version this change was made.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

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Implement the init_wait_entry() function macro in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Net

Implement the init_wait_entry() function macro in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

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Implement wait_event_killable() in the LinuxKPI.

Requested by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies

Implement wait_event_lock_irq() macro function in the LinuxKPI.

MFC after: 1 week
Requested by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies

Implement DEFINE_WAIT_FUNC() function macro and default_wake_function()
in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies
Sp

Implement DEFINE_WAIT_FUNC() function macro and default_wake_function()
in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

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Implement wait_on_bit() function macro in the LinuxKPI.

MFC after: 1 week
Submitted by: Johannes Lundberg <[email protected]>
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

Fixes for wait event in the LinuxKPI. These are regression issues
after r319757.

1) Correct the return value from __wait_event_common() from 1 to 0 in
case the timeout is specified as MAX_SCHEDULE_T

Fixes for wait event in the LinuxKPI. These are regression issues
after r319757.

1) Correct the return value from __wait_event_common() from 1 to 0 in
case the timeout is specified as MAX_SCHEDULE_TIMEOUT. In the other
case __ret is zero and will be substituted in the last part of the
macro with the appropriate value before return.

2) Make sure the "timeout" argument is casted to "int" before
evaluating negativity. Else the signedness of a "long" might be
checked instead of the signedness of an integer.

3) The wait_event() function should not have a return value.

Found by: KrishnamRaju ErapaRaju <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies

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Augment wait queue support in the LinuxKPI.

In particular:
- Don't evaluate event conditions with a sleepqueue lock held, since such
code may attempt to acquire arbitrary locks.
- Fix the return v

Augment wait queue support in the LinuxKPI.

In particular:
- Don't evaluate event conditions with a sleepqueue lock held, since such
code may attempt to acquire arbitrary locks.
- Fix the return value for wait_event_interruptible() in the case that the
wait is interrupted by a signal.
- Implement wait_on_bit_timeout() and wait_on_atomic_t().
- Implement some functions used to test for pending signals.
- Implement a number of wait_event_*() variants and unify the existing
implementations.
- Unify the mechanism used by wait_event_*() and schedule() to put the
calling thread to sleep.

This is required to support updated DRM drivers. Thanks to hselasky for
finding and fixing a number of bugs in the original revision.

Reviewed by: hselasky
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D10986

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Make the LinuxKPI task struct persistent accross system calls.

A set of helper functions have been added to manage the life of the
LinuxKPI task struct. When an external system call or task is invok

Make the LinuxKPI task struct persistent accross system calls.

A set of helper functions have been added to manage the life of the
LinuxKPI task struct. When an external system call or task is invoked,
a check is made to create the task struct by demand. A thread
destructor callback is registered to free the task struct when a
thread exits to avoid memory leaks.

This change lays the ground for emulating the Linux kernel more
closely which is a dependency by the code using the LinuxKPI APIs.

Add new dedicated td_lkpi_task field has been added to struct thread
instead of abusing td_retval[1].

Fix some header file inclusions to make LINT kernel build properly
after this change.

Bump the __FreeBSD_version to force a rebuild of all kernel modules.

MFC after: 1 week
Sponsored by: Mellanox Technologies

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The SCHEDULER_STOPPED() macro already contains a predict false statement.
Remove superfluous unlikely() wrapper.

Suggested by: glebius
MFC after: 1 week
Sponsored by: Mellanox Technologies

Add checks for SCHEDULER_STOPPED() so that code using the LinuxKPI can
run after a panic(). This for example allows a LinuxKPI based graphics
stack to receive prints during a panic.

Obtained from: k

Add checks for SCHEDULER_STOPPED() so that code using the LinuxKPI can
run after a panic(). This for example allows a LinuxKPI based graphics
stack to receive prints during a panic.

Obtained from: kmacy @
MFC after: 1 week
Sponsored by: Mellanox Technologies

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Add wait_event_interruptible_timeout to linuxkpi.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Reviewed by: hselasky@
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.fr

Add wait_event_interruptible_timeout to linuxkpi.

Submitted by: Krishnamraju Eraparaju @ Chelsio
Reviewed by: hselasky@
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D5776

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Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some M

Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some Makefiles to use new file locations.
- Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn
adds the LinuxKPI to all LINT builds.
- The LinuxKPI can be added to the kernel by setting the
COMPAT_LINUXKPI option. The OFED kernel option no longer builds the
LinuxKPI into the kernel. This was done to keep the build rules for
the LinuxKPI in sys/conf/files simple.
- Extend the LinuxKPI module to include support for USB by moving the
Linux USB compat from usb.ko to linuxkpi.ko.
- Bump the FreeBSD_version.
- A universe kernel build has been done.

Reviewed by: np @ (cxgb and cxgbe related changes only)
Sponsored by: Mellanox Technologies

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