This is needed for debugfs implementations in drivers.
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
OKed by: jfree
Differential Revision: https://reviews.freebsd.org/D37092
This diff extends LinuxKPI to support simple attribute files in debugfs.
These simple attributes are an essential component for compiling drm-kmod
with CONFIG_DEBUG_FS enabled.
This will allow for easier graphics driver debugging using
Intel's igt-gpu-tools.
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D35883
Sponsored by: Google, Inc. (GSoC 2022)
Add a dummy simple_open() to fs.h as we have for other
(unsupported) functions.
This is needed by a wireless driver.
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D32642
get_file_rcu() grabs a file if the file->f_count is not zero.
Required by drm-kmod 5.6
Reviewed by: hselasky, manu (previous version)
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D31672
dmi function are used to get smbios values.
The DRM subsystem and drivers use it to enabled (or not) quirks.
Reviewed by: hselasky
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26046
For drmkpi (D23085) we don't want the Linux struct file as we don't emulate
everything. Also the prototypes should be in shmem_fs.h to have 100%
compatibility with Linux.
Reviewed by: hselasky
MFC after: Maybe
Differential Revision: https://reviews.freebsd.org/D23764
- offsets can be negative, loff_t needs to be signed, it also simplifies
interop with the rest of the code base to use off_t than the actual linux
definition "long long"
- don't rely on the defining "file" to "linux_file" in interface definitions
as that causes heartache with includes
Reviewed by: hps@
MFC after: 1 week
Sponsored by: iX Systems
Differential Revision: https://reviews.freebsd.org/D19274
Make sure we hold a reference on the character device for every opened file
to prevent the character device to be freed prematurely.
Submitted by: hselasky@
Approved by: hselasky (mentor)
MFC after: 1 week
Sponsored by: Mellanox Technologies
Bump the FreeBSD version to force recompilation of external
kernel modules due to structure change.
PR: 222504
Submitted by: Greg V <greg@unrelenting.technology>
MFC after: 1 week
Sponsored by: Mellanox Technologies
use of the linux_poll_wakeup() function from unsafe contexts, which
can lead to use-after-free issues.
Instead of calling linux_poll_wakeup() directly use the wake_up()
family of functions in the LinuxKPI to do this.
Bump the FreeBSD version to force recompilation of external kernel modules.
MFC after: 1 week
Sponsored by: Mellanox Technologies
wide enough to hold the full 64-bit dev_t. Instead use the "dev" field in
the "linux_cdev" structure to store and lookup this value.
While at it remove superfluous use of parenthesis inside the
MAJOR(), MINOR() and MKDEV() macros in the LinuxKPI.
MFC after: 1 week
Sponsored by: Mellanox Technologies
devices. The implementation allows read and write filters to be
created and piggybacks on the poll() file operation to determine when
a filter should trigger. The piggyback mechanism is simply to check
for the EWOULDBLOCK or EAGAIN return code from read(), write() or
ioctl() system calls and then update the kqueue() polling state bits.
The implementation is similar to the one found in the cuse(3) module.
Refer to sys/fs/cuse/*.[ch] for more details.
MFC after: 1 week
Sponsored by: Mellanox Technologies
- Allow "struct linux_file" to be refcounted when its "_file" member
is NULL by using its "f_count" field. The reference counts are
transferred to the file structure when the file descriptor is
installed.
- Add missing vdrop() calls for error cases during open().
- Set the "_file" member of "struct linux_file" during open. This
allows use of refcounting through get_file() and fput() with LinuxKPI
character devices.
MFC after: 1 week
Sponsored by: Mellanox Technologies
- 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/fs.h (Browse further)
