Commit Graph

233 Commits

Author SHA1 Message Date
Doug Moore
2288078c5e Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map.
In case the implementation ever changes from using a chain of next pointers,
then changing the macro definition will be necessary, but changing all the
files that iterate over vm_map entries will not.

Drop a counter in vm_object.c that would have an effect only if the
vm_map entry count was wrong.

Discussed with: alc
Reviewed by: markj
Tested by: pho (earlier version)
Differential Revision:	https://reviews.freebsd.org/D21882
2019-10-08 07:14:21 +00:00
Edward Tomasz Napierala
e55366be83 Fix /proc/mounts for autofs(5) mounts.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2019-09-04 18:00:54 +00:00
Edward Tomasz Napierala
bb3c7a5440 Make linprocfs(4) report Tgid, Linux ltrace(1) needs it.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2019-09-03 16:33:02 +00:00
Edward Tomasz Napierala
967cbe64b1 Decode more CPU flags in cpuinfo.
Reviewed by:	dchagin
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D20145
2019-05-03 08:27:03 +00:00
Edward Tomasz Napierala
6c8cb13dd8 Fix flags in cpuinfo.
Reviewed by:	dchagin
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D20139
2019-05-02 19:02:16 +00:00
Chuck Tuffli
4c4317193b Fix output of linprocfs stat entry
The Linux /proc/stat entry has grown over time

 v2.5.41 <
   user, nice, system, idle
 v2.5.41
   user, nice, system, idle, iowait, irq
 v2.6.11
   user, nice, system, idle, iowait, irq, softirq, steal
 v2.6.24
   user, nice, system, idle, iowait, irq, softirq, steal, guest
 v2.6.32 >
   user, nice, system, idle, iowait, irq, softirq, steal, guest, guest_nice

Some applications (e.g. nodejs) depend on the correct number of entries
and will abort otherwise.

Fix is to print the correct number of entries based on the value of
osrelease set either in sysctl or the jail settings. Change is similar
to approach used by illumos.

Reviewed by: emaste, imp (mentor)
Approved by: imp (mentor)
Differential Revision: https://reviews.freebsd.org/D15858
2018-06-22 00:02:05 +00:00
Chuck Tuffli
d1fa346fac Add linprocfs support for min_free_kbytes
This adds linprocfs support for proc/sys/vm/min_free_kbytes which the
free program requires for correct operation. The approach mirrors the
approach used in illumos.

Reviewed by:	imp (mentor), emaste
Approved by:	imp (mentor)
Differential Revision: https://reviews.freebsd.org/D15563
2018-06-15 15:22:27 +00:00
Konstantin Belousov
1f3bc15763 linprocfs: add TracerPid to /proc/pid/status.
Also fix the value of parent pid if the process is traced.

Submitted by:	Yanko Yankulov <yanko.yankulov@gmail.com>
MFC after:	1 week
2018-06-15 13:56:58 +00:00
Ed Maste
6a1d1e0ca3 Add stubbed arm64 linuxulator /proc/cpuinfo handler
Sponsored by:	Turing Robotic Industries
2018-06-15 13:53:37 +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
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
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
Jeff Roberson
e958ad4cf3 Make v_wire_count a per-cpu counter(9) counter. This eliminates a
significant source of cache line contention from vm_page_alloc().  Use
accessors and vm_page_unwire_noq() so that the mechanism can be easily
changed in the future.

Reviewed by:	markj
Discussed with:	kib, glebius
Tested by:	pho (earlier version)
Sponsored by:	Netflix, Dell/EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D14273
2018-02-12 22:53:00 +00:00
Jeff Roberson
e2068d0bcd Use per-domain locks for vm page queue free. Move paging control from
global to per-domain state.  Protect reservations with the free lock
from the domain that they belong to.  Refactor to make vm domains more
of a first class object.

Reviewed by:    markj, kib, gallatin
Tested by:      pho
Sponsored by:   Netflix, Dell/EMC Isilon
Differential Revision:  https://reviews.freebsd.org/D14000
2018-02-06 22:10:07 +00:00
Pedro F. Giffuni
df57947f08 spdx: initial adoption of licensing ID tags.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes:	yes
Differential Revision:	https://reviews.freebsd.org/D13133
2017-11-18 14:26:50 +00:00
Mahdi Mokhtari
4b36080668 Fix caveat in new implementation of linprocfs_docpuinfo():
Prevent kernel panic in case that extended-cpuid isn't supported by CPU

Reviewed by:	kib, ngie, trasz
Approved by:	trasz
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D11294
2017-06-23 10:36:27 +00:00
Mahdi Mokhtari
906ba87284 Fix linprocfs_docpuinfo() output regarding to what newer Linux apps expect
Reviewed by:	trasz
Approved by:	trasz
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D10274
2017-05-06 17:37:01 +00:00
Ed Maste
f0e56c1f62 Remove trailing whitespace from r317061 2017-04-17 18:57:26 +00:00
Gleb Smirnoff
83c9dea1ba - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter
in place.  To do per-cpu stats, convert all fields that previously were
  maintained in the vmmeters that sit in pcpus to counter(9).
- Since some vmmeter stats may be touched at very early stages of boot,
  before we have set up UMA and we can do counter_u64_alloc(), provide an
  early counter mechanism:
  o Leave one spare uint64_t in struct pcpu, named pc_early_dummy_counter.
  o Point counter(9) fields of vmmeter to pcpu[0].pc_early_dummy_counter,
    so that at early stages of boot, before counters are allocated we already
    point to a counter that can be safely written to.
  o For sparc64 that required a whole dummy pcpu[MAXCPU] array.

Further related changes:
- Don't include vmmeter.h into pcpu.h.
- vm.stats.vm.v_swappgsout and vm.stats.vm.v_swappgsin changed to 64-bit,
  to match kernel representation.
- struct vmmeter hidden under _KERNEL, and only vmstat(1) is an exclusion.

This is based on benno@'s 4-year old patch:
https://lists.freebsd.org/pipermail/freebsd-arch/2013-July/014471.html

Reviewed by:	kib, gallatin, marius, lidl
Differential Revision:	https://reviews.freebsd.org/D10156
2017-04-17 17:34:47 +00:00
Edward Tomasz Napierala
15cbcf4bab Add /proc/self/mounts to linprocfs; some linux binaries need it.
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-02-20 17:33:25 +00:00
Alan Cox
bba39b9ae3 Remove PG_CACHED-related fields from struct vmmeter, because they are no
longer used.  More precisely, they are always zero because the code that
decremented and incremented them no longer exists.

Bump __FreeBSD_version to mark this change.

Reviewed by:	kib, markj
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D8583
2016-11-22 18:13:46 +00:00
Mateusz Guzik
dbfe4b2673 linprocfs: garbage collect meminfo fields not present in linux
In particular memshared not only does not exist in linux, it was
extremely expensive to calculate.
2016-09-16 03:36:43 +00:00
John Baldwin
38605d7312 Remove 'cpu' and 'cpu_class' on amd64.
The 'cpu' and 'cpu_class' variables were always set to the same value
on amd64 and are legacy holdovers from i386.  Remove them entirely on
amd64.

Reviewed by:	imp, kib (older version)
Differential Revision:	https://reviews.freebsd.org/D7888
2016-09-15 17:05:54 +00:00
Konstantin Belousov
584b675ed6 Hide the boottime and bootimebin globals, provide the getboottime(9)
and getboottimebin(9) KPI. Change consumers of boottime to use the
KPI.  The variables were renamed to avoid shadowing issues with local
variables of the same name.

Issue is that boottime* should be adjusted from tc_windup(), which
requires them to be members of the timehands structure.  As a
preparation, this commit only introduces the interface.

Some uses of boottime were found doubtful, e.g. NLM uses boottime to
identify the system boot instance.  Arguably the identity should not
change on the leap second adjustment, but the commit is about the
timekeeping code and the consumers were kept bug-to-bug compatible.

Tested by:	pho (as part of the bigger patch)
Reviewed by:	jhb (same)
Discussed with:	bde
Sponsored by:	The FreeBSD Foundation
MFC after:	1 month
X-Differential revision:	https://reviews.freebsd.org/D7302
2016-07-27 11:08:59 +00:00
Konstantin Belousov
eb00e5b783 swap_dev_info() does not require Giant, so Giant locking around
the loop in linprocfs_doswaps() is useless.
List of the registered filesystems is protected by vfsconf_sx,
not by the Giant.  Adjust linprocfs_dofilesystems() correspondingly.

Approved by:	re (delphij), des (linprocfs maintainer)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-06-12 11:13:38 +00:00
Conrad Meyer
8d340432aa linprocfs_doproclimits: Initialize error return before use
Reported by:	Coverity
CID:		1354623
Sponsored by:	EMC / Isilon Storage Division
2016-04-20 01:03:06 +00:00
Conrad Meyer
e78adba3fe linprocfs: Don't print uninitialized values
Reported by:	Coverity
CID:		1354624
Sponsored by:	EMC / Isilon Storage Division
2016-04-20 01:00:13 +00:00
Pedro F. Giffuni
74b8d63dcc Cleanup unnecessary semicolons from the kernel.
Found with devel/coccinelle.
2016-04-10 23:07:00 +00:00
Dmitry Chagin
5743aa47f5 More complete implementation of /proc/self/limits.
Fix the way the code accesses process limits struct - pointed out by mjg@.

PR:		207386
Reviewed by:	no objection form des@
MFC after:	3 weeks
2016-04-10 07:11:29 +00:00
Dag-Erling Smørgrav
f4d6a773f8 Implement /proc/$$/limits.
PR:		207386
Submitted by:	Szymon Śliwa <knight.erraunt@gmail.com>
MFC after:	3 weeks
2016-02-21 14:56:05 +00:00
Marcelo Araujo
f19e47d691 Add support to the jail framework to be able to mount linsysfs(5) and
linprocfs(5).

Differential Revision:	D2846
Submitted by:		Nikolai Lifanov <lifanov@mail.lifanov.com>
Reviewed by:		jamie
2015-07-19 08:52:35 +00:00
Mateusz Guzik
b34be824a0 linprocfs: vref the vnode passed to vn_fullpath 2015-07-11 16:44:28 +00:00
Eric van Gyzen
63e4c6cdf9 Provide vnode in memory map info for files on tmpfs
When providing memory map information to userland, populate the vnode pointer
for tmpfs files.  Set the memory mapping to appear as a vnode type, to match
FreeBSD 9 behavior.

This fixes the use of tmpfs files with the dtrace pid provider,
procstat -v, procfs, linprocfs, pmc (pmcstat), and ptrace (PT_VM_ENTRY).

Submitted by:   Eric Badger <eric@badgerio.us> (initial revision)
Obtained from:  Dell Inc.
PR:             198431
MFC after:      2 weeks
Reviewed by:    jhb
Approved by:    kib (mentor)
2015-06-02 18:37:04 +00:00
Dmitry Chagin
dcc0e6c493 Simplify linprocfs_doprocenviron(). Remove extra proc visibility checks
and initialize pn_vis by well known procfs_candebug().
2015-05-24 17:53:48 +00:00
Dmitry Chagin
94c0ee30b4 Convert Linux sigsets before showing.
Linux kernel displays sigset always as 16x4 bit mask.
2015-05-24 17:48:34 +00:00
Dmitry Chagin
a6fd8bb2bb Add support for /proc/<pid>/auxv. 2015-05-24 17:46:04 +00:00
Dmitry Chagin
ffefd5707d Add vdso and stack names to the /proc/self/maps. 2015-05-24 17:44:42 +00:00
Dmitry Chagin
67d3974849 Introduce a new module linux_common.ko which is intended for the
following primary purposes:

1. Remove the dependency of linsysfs and linprocfs modules from linux.ko,
which will be architecture specific on amd64.

2. Incorporate into linux_common.ko general code for platforms on which
we'll support two Linuxulator modules (for both instruction set - 32 & 64 bit).

3. Move malloc(9) declaration to linux_common.ko, to enable getting memory
usage statistics properly.

Currently linux_common.ko incorporates a code from linux_mib.c and linux_util.c
and linprocfs, linsysfs and linux kernel modules depend on linux_common.ko.

Temporarily remove dtrace garbage from linux_mib.c and linux_util.c

Differential Revision:	https://reviews.freebsd.org/D1072
In collaboration with:	Vassilis Laganakos.

Reviewed by:	trasz
2015-05-24 15:51:18 +00:00
Dmitry Chagin
0ed687fa2e Print out proper procmap entry for 64 bit binaries.
Differential Revision:	https://reviews.freebsd.org/D1066
Reviewed by:	trasz
2015-05-24 15:42:36 +00:00
Edward Tomasz Napierala
1c73bcab8e Rewrite linprocfs_domtab() as a wrapper around kern_getfsstat(). This
adds missing jail and MAC checks.

Differential Revision:	https://reviews.freebsd.org/D2193
Reviewed by:	kib@
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-04-15 09:13:11 +00:00
Edward Tomasz Napierala
67caead165 Remove unused code.
Differential Revision:	https://reviews.freebsd.org/D2195
Reviewed by:	kib@, imp@
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-04-02 10:19:24 +00:00
Gleb Kurtsou
dde58752db Adjust printf format specifiers for dev_t and ino_t in kernel.
ino_t and dev_t are about to become uint64_t.

Reviewed by:	kib, mckusick
2014-12-17 07:27:19 +00:00
Gleb Smirnoff
1411ec550f Fix build on 32-bit machines.
Pointy hat to:	glebius
2014-09-18 20:29:17 +00:00
Gleb Smirnoff
1e99b3f4e3 - Use if_get_counter() to fetch ifnet statistics.
- Report IFCOUNTER_OQDROPS to linprocfs. Wasn't there before.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-09-18 16:44:28 +00:00
Mateusz Guzik
6662ce5aab Add missing proctree locking to fill_kinfo_proc consumers.
This fixes r270444.

Pointy hat:	mjg
Reported by:	many
MFC after:	1 week
2014-08-30 03:10:55 +00:00
Bryan Drewery
44f1c91610 Rename global cnt to vm_cnt to avoid shadowing.
To reduce the diff struct pcu.cnt field was not renamed, so
PCPU_OP(cnt.field) is still used. pc_cnt and pcpu are also used in
kvm(3) and vmstat(8). The goal was to not affect externally used KPI.

Bump __FreeBSD_version_ in case some out-of-tree module/code relies on the
the global cnt variable.

Exp-run revealed no ports using it directly.

No objection from:	arch@
Sponsored by:	EMC / Isilon Storage Division
2014-03-22 10:26:09 +00:00
Gleb Smirnoff
b245f96c44 Since 32-bit if_baudrate isn't enough to describe a baud rate of a 10 Gbit
interface, in the r241616 a crutch was provided. It didn't work well, and
finally we decided that it is time to break ABI and simply make if_baudrate
a 64-bit value. Meanwhile, the entire struct if_data was reviewed.

o Remove the if_baudrate_pf crutch.

o Make all fields of struct if_data fixed machine independent size. The
  notion of data (packet counters, etc) are by no means MD. And it is a
  bug that on amd64 we've got a 64-bit counters, while on i386 32-bit,
  which at modern speeds overflow within a second.

  This also removes quite a lot of COMPAT_FREEBSD32 code.

o Give 16 bit for the ifi_datalen field. This field was provided to
  make future changes to if_data less ABI breaking. Unfortunately the
  8 bit size of it had effectively limited sizeof if_data to 256 bytes.

o Give 32 bits to ifi_mtu and ifi_metric.
o Give 64 bits to the rest of fields, since they are counters.

__FreeBSD_version bumped.

Discussed with:	emax
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-03-13 03:42:24 +00:00
Eitan Adler
9ace80105a linprocfs: add support for /sys/kernel/random/uuid
PR:		kern/186187
Submitted by:	Fernando <fernando.apesteguia@gmail.com>
MFC After:	2 weeks
2014-02-27 00:43:10 +00:00
Gleb Smirnoff
76039bc84f The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
Alan Cox
66c392df53 Relax the vm object locking. Use a read lock.
Sponsored by:	EMC / Isilon Storage Division
2013-06-05 17:00:10 +00:00