Commit graph

13 commits

Author SHA1 Message Date
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)