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Author SHA1 Message Date
Hans Petter Selasky
986e3bed8b Implement the ip_eth_mc_map() function in the LinuxKPI. 
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-06-12 08:43:49 +00:00
Hans Petter Selasky
35555d474b Implement the kstrtobool() and kstrtobool_from_user() functions 
in the LinuxKPI.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-11 16:26:33 +00:00
Hans Petter Selasky
93ed9ab20b Implement the user_access_begin(), user_access_end(), usafe_get_user() and 
unsafe_put_user() function macros in the LinuxKPI.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-11 15:42:29 +00:00
Hans Petter Selasky
71ee95ddf7 Define ARCH_KMALLOC_MINALIGN in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-07 11:44:11 +00:00
Hans Petter Selasky
d150e15285 Wrap timespec64 into timespec in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-07 11:41:42 +00:00
Hans Petter Selasky
a041e75a34 Move the EXPORT_SYMBOL_XXX() function macros into own header file. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-07 11:34:59 +00:00
Hans Petter Selasky
422d8af4df Implement the dev_pm_set_driver_flags() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-07 11:29:07 +00:00
Hans Petter Selasky
40ddfc7604 Make some list functions RCU safe in the LinuxKPI. 
While at it rename hlist_add_after() into hlist_add_behind().

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 15:49:01 +00:00
Hans Petter Selasky
17e2a84e9a Rewrite code using atomic_fcmpset_int() in the LinuxKPI. 
Suggested by:	mjg@
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 15:31:47 +00:00
Hans Petter Selasky
e6e028d01f Implement the __add_wait_queue_entry_tail() function in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 15:19:30 +00:00
Hans Petter Selasky
7e95e98db8 Implement the might_sleep_if() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 15:10:11 +00:00
Hans Petter Selasky
ab98f1e8d8 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@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 15:06:21 +00:00
Hans Petter Selasky
1b092623b2 Implement the init_wait_entry() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 14:59:23 +00:00
Hans Petter Selasky
23dcf4359e Implement the atomic_dec_if_positive() function in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 13:59:51 +00:00
Hans Petter Selasky
9e067b2256 Implement the ktime_compare() and ktime_after() functions in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 13:37:31 +00:00
Hans Petter Selasky
a16387c1d4 Implement the rdmsrl_safe() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-06 13:29:52 +00:00
Hans Petter Selasky
7a13eeba18 Declare and set the global "system_highpri_wq" workqueue structure pointer 
in the LinuxKPI.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:49:35 +00:00
Hans Petter Selasky
c6d920309c Implement the INIT_DELAYED_WORK_ONSTACK() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:46:16 +00:00
Hans Petter Selasky
7f346854b8 Define the __kernel_size_t type in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:42:35 +00:00
Hans Petter Selasky
5a1d03bb7c Implement the task_pid_vnr() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:40:09 +00:00
Hans Petter Selasky
747d9a8165 Add "access" function pointer to the "vm_operations_struct" structure 
in the LinuxKPI. While at it document when to use the "virtual_address" or
the "address" field in the "vm_fault" structure.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:37:28 +00:00
Hans Petter Selasky
0d2dce0b78 Implement mul_u32_u32() function in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:30:36 +00:00
Hans Petter Selasky
f446b7cab4 Implement timer_setup() and from_timer() function macros in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-05 15:20:20 +00:00
Mark Johnston
97bc9a9384 Regen after r334626. 2018-06-04 19:36:47 +00:00
Mark Johnston
9f9c9b22ec Reimplement brk() and sbrk() to avoid the use of _end. 
Previously, libc.so would initialize its notion of the break address
using _end, a special symbol emitted by the static linker following
the bss section.  Compatibility issues between lld and ld.bfd could
cause the wrong definition of _end (libc.so's definition rather than
that of the executable) to be used, breaking the brk()/sbrk()
interface.

Avoid this problem and future interoperability issues by simply not
relying on _end.  Instead, modify the break() system call to return
the kernel's view of the current break address, and have libc
initialize its state using an extra syscall upon the first use of the
interface.  As a side effect, this appears to fix brk()/sbrk() usage
in executables run with rtld direct exec, since the kernel and libc.so
no longer maintain separate views of the process' break address.

PR:		228574
Reviewed by:	kib (previous version)
MFC after:	2 months
Differential Revision:	https://reviews.freebsd.org/D15663
 2018-06-04 19:35:15 +00:00
Hans Petter Selasky
57a865f808 Implement the __sg_alloc_table_from_pages() function based on the existing 
sg_alloc_table_from_pages() function in the LinuxKPI.

This basically allow segments to have a limit, max_segment.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-01 12:09:07 +00:00
Hans Petter Selasky
6fad8d171a Implement radix_tree_iter_delete() in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-01 11:42:09 +00:00
Hans Petter Selasky
0a85496223 Improve high resolution timer support in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-01 11:33:14 +00:00
Hans Petter Selasky
f03ae7e802 Add more GFP macro definitions in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
Sponsored by:	Limelight Networks
 2018-06-01 11:14:59 +00:00
Hans Petter Selasky
13a5c70b91 Implement support for the PCI_BUS_NUM() function macro in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 13:17:34 +00:00
Hans Petter Selasky
f1aa567bfe Implement support for the kvmalloc_array() function in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 13:13:08 +00:00
Hans Petter Selasky
f6d4552417 Correct macroname in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 12:55:38 +00:00
Hans Petter Selasky
cbea4f294f Define __initconst in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 12:50:42 +00:00
Hans Petter Selasky
7ce7605ece Implement bitmap_complement() in the LinuxKPI. 
Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 12:48:24 +00:00
Hans Petter Selasky
69d6653ba4 Implement idr_is_empty() in the LinuxKPI and make idr_remove() API compatible 
with upstream Linux by returning the pointer to the removed element.

Submitted by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-31 12:35:21 +00:00
Brooks Davis
64b378f1e1 Remove alternative names that are identical to the default. 
Verified by make sysent producing no changes.
 2018-05-30 22:22:58 +00:00
Hans Petter Selasky
666cda9e0c The schedule_timeout_killable() function should listen for signals 
in the LinuxKPI.

Found by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-28 11:26:40 +00:00
Hans Petter Selasky
bd40dea7e2 Implement wait_event_killable() in the LinuxKPI. 
Requested by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-28 10:54:24 +00:00
Hans Petter Selasky
2a3ec12831 Allow TASK_PARKED bit being set when going to sleep in the LinuxKPI. 
Found by:	Johannes Lundberg <johalun0@gmail.com>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-05-28 10:51:39 +00:00
Brooks Davis
659a2e9243 Regen after r334223: make vadvise compat freebsd11. 2018-05-25 20:41:26 +00:00
Brooks Davis
7351a8bdb5 Make vadvise compat freebsd11. 
The vadvise syscall (aka ovadvise) is undocumented and has always been
implmented as returning EINVAL.  Put the syscall under COMPAT11 and
provide a userspace implementation.

Reviewed by:	kib
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D15557
 2018-05-25 20:40:23 +00:00
Matt Macy
4f6c66cc9c UDP: further performance improvements on tx 
Cumulative throughput while running 64
  netperf -H $DUT -t UDP_STREAM -- -m 1
on a 2x8x2 SKL went from 1.1Mpps to 2.5Mpps

Single stream throughput increases from 910kpps to 1.18Mpps

Baseline:
https://people.freebsd.org/~mmacy/2018.05.11/udpsender2.svg

- Protect read access to global ifnet list with epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender3.svg

- Protect short lived ifaddr references with epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender4.svg

- Convert if_afdata read lock path to epoch
https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg

A fix for the inpcbhash contention is pending sufficient time
on a canary at LLNW.

Reviewed by:	gallatin
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D15409
 2018-05-23 21:02:14 +00:00
Matt Macy
d7c5a620e2 ifnet: Replace if_addr_lock rwlock with epoch + mutex 
Run on LLNW canaries and tested by pho@

gallatin:
Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5
based ConnectX 4-LX NIC, I see an almost 12% improvement in received
packet rate, and a larger improvement in bytes delivered all the way
to userspace.

When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1,
I see, using nstat -I mce0 1 before the patch:

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
4.98   0.00   4.42   0.00 4235592     33   83.80 4720653 2149771   1235 247.32
4.73   0.00   4.20   0.00 4025260     33   82.99 4724900 2139833   1204 247.32
4.72   0.00   4.20   0.00 4035252     33   82.14 4719162 2132023   1264 247.32
4.71   0.00   4.21   0.00 4073206     33   83.68 4744973 2123317   1347 247.32
4.72   0.00   4.21   0.00 4061118     33   80.82 4713615 2188091   1490 247.32
4.72   0.00   4.21   0.00 4051675     33   85.29 4727399 2109011   1205 247.32
4.73   0.00   4.21   0.00 4039056     33   84.65 4724735 2102603   1053 247.32

After the patch

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
5.43   0.00   4.20   0.00 3313143     33   84.96 5434214 1900162   2656 245.51
5.43   0.00   4.20   0.00 3308527     33   85.24 5439695 1809382   2521 245.51
5.42   0.00   4.19   0.00 3316778     33   87.54 5416028 1805835   2256 245.51
5.42   0.00   4.19   0.00 3317673     33   90.44 5426044 1763056   2332 245.51
5.42   0.00   4.19   0.00 3314839     33   88.11 5435732 1792218   2499 245.52
5.44   0.00   4.19   0.00 3293228     33   91.84 5426301 1668597   2121 245.52

Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch

Reviewed by:	gallatin
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D15366
 2018-05-18 20:13:34 +00:00
Brooks Davis
e15f0023ed Allow freebsd32 __sysctl(2) to return ENOMEM. 
This is required by programs like sockstat that read variably sized
sysctls such as kern.file.  The normal path has no such restriction and
the restriction was added without comment along with initial support for
freebsd32 in 2002 (r100384).

Reviewed by:	kib
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D15438
 2018-05-15 16:24:58 +00:00
Mark Johnston
e3d5c4ade1 Remove "All rights reserved" from my files. 
See r333391 for the rationale.

MFC after:	1 week
 2018-05-09 20:57:18 +00:00
Matt Macy
cbd92ce62e Eliminate the overhead of gratuitous repeated reinitialization of cap_rights 
- Add macros to allow preinitialization of cap_rights_t.

- Convert most commonly used code paths to use preinitialized cap_rights_t.
  A 3.6% speedup in fstat was measured with this change.

Reported by:	mjg
Reviewed by:	oshogbo
Approved by:	sbruno
MFC after:	1 month
 2018-05-09 18:47:24 +00:00
Hans Petter Selasky
c20feee43b Add myself to copyright in the LinuxKPI RCU support layer. 
Suggested by:	mmacy@
Sponsored by:	Mellanox Technologies
 2018-05-09 08:50:42 +00:00
Jamie Gritton
0e5c6bd436 Make it easier for filesystems to count themselves as jail-enabled, 
by doing most of the work in a new function prison_add_vfs in kern_jail.c
Now a jail-enabled filesystem need only mark itself with VFCF_JAIL, and
the rest is taken care of.  This includes adding a jail parameter like
allow.mount.foofs, and a sysctl like security.jail.mount_foofs_allowed.
Both of these used to be a static list of known filesystems, with
predefined permission bits.

Reviewed by:	kib
Differential Revision:	D14681
 2018-05-04 20:54:27 +00:00
Hans Petter Selasky
45aca3b1a1 Define USEC_PER_MSEC and USEC_PER_SEC in the LinuxKPI. 
MFC after:	1 week
Sponsored by:	Mellanox Technologies
 2018-04-30 09:31:09 +00:00
Eitan Adler
e07db02261 [procfs] Split procfs_attr into multiple functions 
Reviewed by:	des, kib
Discussed with:	mmacy
Differential Revision:	https://reviews.freebsd.org/D15150
 2018-04-24 14:49:09 +00:00