Commit graph

22 commits

Author SHA1 Message Date
Hans Petter Selasky
a399cf139b Prefer using the MIN() function macro over the min() inline function
in the LinuxKPI. Linux defines min() to be a macro, while in FreeBSD
min() is a static inline function clamping its arguments to
"unsigned int".

MFC after:	1 week
Sponsored by:	Mellanox Technologies // NVIDIA Networking
2020-12-07 09:48:06 +00:00
Hans Petter Selasky
74d3a63559 Use atomic_clear_rel_long() to implement clear_bit_unlock() in the LinuxKPI
after r363842.

Suggested by:	alc@
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2020-08-11 12:41:40 +00:00
Emmanuel Vadot
334680ab07 linuxkpi: Add clear_bit_unlock
This calls clear_bit and adds a memory barrier.

Sponsored by: The FreeBSD Foundation

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D25943
2020-08-04 15:25:22 +00:00
Hans Petter Selasky
07fdea3672 Allow test_bit() in the LinuxKPI to accept a const pointer.
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2020-04-20 13:47:15 +00:00
Hans Petter Selasky
884aaac660 Implement BITS_PER_TYPE() function macro in the LinuxKPI.
Fix some style while at it.

Submitted by:		Johannes Lundberg <johalun0@gmail.com>
MFC after:		1 week
Sponsored by:		Limelight Networks
Sponsored by:		Mellanox Technologies
2019-03-13 17:55:58 +00:00
Hans Petter Selasky
6402bc3d1e Use atomic_fcmpset_XXX() instead of atomic_cmpset_XXX() when possible
in the LinuxKPI.

Suggested by:	mjg @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2018-08-09 09:39:32 +00:00
Ed Maste
8363051739 linuxkpi whitespace cleanup
Reviewed by:	hselasky, markj
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D14807
2018-03-23 15:50:01 +00:00
Hans Petter Selasky
9bce524efa Implement for_each_clear_bit() function macro in the LinuxKPI.
MFC after:	1 week
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
2018-03-04 18:10:18 +00:00
Hans Petter Selasky
5d503e30ad Implement GENMASK_ULL() function macro in the LinuxKPI.
MFC after:	1 week
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
2018-03-04 18:08:21 +00:00
Hans Petter Selasky
62bae5d421 The LinuxKPI atomics do not have acquire nor release semantics unless
specified. Fix code to use READ_ONCE() and WRITE_ONCE() where appropriate.

Suggested by:		kib @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-09-18 13:37:14 +00:00
Hans Petter Selasky
c9dd0b48c9 Cleanup the bitmap_xxx() functions in the LinuxKPI:
- Move all bitmap related functions from bitops.h to bitmap.h, similar
  to what Linux does.

- Apply some minor code cleanup and simplifications to optimize the
  generated code when using static inline functions.

- Implement the following list of bitmap functions which are needed by
  drm-next and ibcore:
  - bitmap_find_next_zero_area_off()
  - bitmap_find_next_zero_area()
  - bitmap_or()
  - bitmap_and()
  - bitmap_xor()

- Add missing include directives to the qlnxe driver
  (davidcs@ has been notified)

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-04-06 13:30:31 +00:00
Hans Petter Selasky
3cfeca84b4 Implement more bit operation functions in the LinuxKPI.
Some minor whitespace nits while at it.

Obtained from:		kmacy @
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-02-27 14:38:17 +00:00
Hans Petter Selasky
797046eebb Implement BIT_ULL() macro in the LinuxKPI.
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-02-24 14:23:46 +00:00
Hans Petter Selasky
cffaf933d7 Implement __test_and_clear_bit() and __test_and_set_bit() in the LinuxKPI.
The clang compiler will optimise these functions down to three AMD64
instructions if the bit argument is a constant during compilation.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-02-23 09:53:54 +00:00
Hans Petter Selasky
1e3db1de0c 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
2017-02-21 12:43:02 +00:00
Hans Petter Selasky
425da8eb61 Fix some data types and add "inline" keyword for __reg_op() function.
Obtained from:	kmacy @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2016-05-23 13:18:15 +00:00
Hans Petter Selasky
83cfd83419 Implement ror32() in the LinuxKPI.
Obtained from:	kmacy @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2016-05-23 12:53:17 +00:00
Hans Petter Selasky
b5c541821a Add support for atomic_long_inc_not_zero() to the LinuxKPI.
Obtained from:	kmacy @
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2016-05-23 11:41:35 +00:00
Hans Petter Selasky
9ad5ce9d01 Fix bugs in currently unused bit searching loop.
MFC after:	3 days
Sponsored by:	Mellanox Technologies
2016-03-31 06:19:15 +00:00
Hans Petter Selasky
e28297940b Implement bitmap_weight() and bitmap_equal() for the LinuxKPI.
MFC after:	1 week
Sponsored by:	Mellanox Technologies
2016-01-26 14:31:20 +00:00
Hans Petter Selasky
8e7baabc9f Make all the LinuxKPI include files compile standalone.
Sponsored by:	Mellanox Technologies
2015-11-03 12:37:55 +00:00
Hans Petter Selasky
8d59ecb214 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
2015-10-29 08:28:39 +00:00
Renamed from sys/ofed/include/linux/bitops.h (Browse further)