opnsense-src/sys
Ryan Libby 9c975a0d90 pbuf_ctor(): Stop using LK_NOWAIT, use LK_NOWITNESS
The LK_NOWAIT was added to suppress a witness warning, but LK_NOWITNESS
is more what we mean.  This makes pbuf_ctor() more consistent with
buf_alloc(), although, unlike buf_alloc(), for pbuf there should not be
any danger of a wild locker relying on the type stability of the buf to
attempt a lock.  That is, this is essentially cosmetic.

Relevant history:
 - 531f8cfea0 Use dedicated lock name for pbufs
 - 5875b94c74 buf_alloc(): lock the buffer with LK_NOWAIT
 - c9e023541a pbuf_ctor(): lock the buffer with LK_NOWAIT
 - 1fb00c8f10 buf_alloc(): Stop using LK_NOWAIT, use LK_NOWITNESS

Reviewed by:	rew, kib
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D45360
2024-05-26 10:20:52 -07:00
..
amd64 vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
arm vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
arm64 vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
bsm timerfd: Move implementation from linux compat to sys/kern 2023-08-24 14:28:56 -06:00
cam cam: Drop periph lock when completing I/O with ENOMEM status 2024-05-24 08:32:04 -06:00
cddl Revert "dtrace: make 'ring' and 'fill' policies imply 'noswitch' flag" 2024-04-21 15:17:08 +03:00
compat LinuxKPI: 802.11: lock MO tx/wake_tx_queue() downcalls 2024-05-23 23:43:29 +00:00
conf uma: Deduplicate uma_small_alloc 2024-05-25 19:24:46 +02:00
contrib Fix scn_queue races on very old pools 2024-05-23 12:20:37 -04:00
crypto ossl: Remove a stray __FBSDID("$FreeBSD$") 2023-12-04 12:29:30 -05:00
ddb sys/ddb: Add hardware breakpoint support to ddb 2024-04-12 09:32:41 +00:00
dev nvme: Count number of alginment splits 2024-05-24 08:32:47 -06:00
dts dts: Bump the freebsd branding version to 6.8 2024-05-06 10:47:26 +02:00
fs tmpfs_node_init: use MTX_NEW on lock from uninitialized memory 2024-05-26 10:20:52 -07:00
gdb sys/gdb: Support hardware breakpoints 2024-04-12 09:32:55 +00:00
geom geom_io: Shift to pause_sbt to eliminate bogus min and update comment. 2024-05-24 08:31:55 -06:00
gnu sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
i386 vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
isa new-bus: Remove the 'rid' and 'type' arguments from BUS_RELEASE_RESOURCE 2024-03-13 15:05:54 -07:00
kern uma: Deduplicate uma_small_alloc 2024-05-25 19:24:46 +02:00
kgssapi sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
libkern sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
modules ipfw: don't build the module if INET not in kernel 2024-05-24 22:21:24 -06:00
net if_vlan: handle VID conflicts 2024-05-22 09:08:02 +02:00
net80211 net80211: add initial key management suites from 802.11-2016, APIs to register them 2024-05-14 14:39:33 -07:00
netgraph ng_pipe: Do not panic when memory allocations fail 2024-04-24 08:44:50 -04:00
netinet tcp: fix sending RST after second inp lookup 2024-05-25 19:58:48 +02:00
netinet6 in6_rmx: remove unnecessary socketvar.h 2024-05-07 14:15:56 -07:00
netipsec libipsec: make const-correct 2024-04-22 22:36:34 -06:00
netlink netlink: Fix C++ compile errors 2024-05-24 22:31:42 -06:00
netpfil pf: always mark states as unlinked before detaching them 2024-05-08 13:19:05 +02:00
netsmb sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
nfs sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
nfsclient sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
nfsserver sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
nlm sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
ofed ibcore: Remove the use of NULL_IB_OBJECT 2024-04-12 17:04:23 +00:00
opencrypto sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
powerpc vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
riscv vm: Simplify startup page dumping conditional 2024-05-25 19:24:55 +02:00
rpc krpc: Ref cnt the client structures for TLS upcalls 2024-04-26 17:55:24 -07:00
security MAC/do: allow to call setuid if real user id is 0 2024-05-23 12:09:11 +02:00
sys vt/sc: retire logic to select vt(4) by default for UEFI boot 2024-05-25 11:00:35 -04:00
teken teken: fix style in teken_wcwidth.h 2023-10-13 08:14:57 +03:00
tests callout: retire callout_async_drain() 2024-01-24 09:33:27 -08:00
tools arm_kernel_bothdr.awk: Update to latest ota 2024-04-16 21:30:17 -06:00
ufs uio: Use switch statements when handling UIO_READ vs UIO_WRITE 2024-05-10 13:43:36 -07:00
vm pbuf_ctor(): Stop using LK_NOWAIT, use LK_NOWITNESS 2024-05-26 10:20:52 -07:00
x86 x86/iommu: extract useful utilities into x86_iommu.c 2024-05-25 08:32:01 +03:00
xdr sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
xen x86/xen: introduce non-hypercall based emergency print 2024-02-22 11:08:03 +01:00
Makefile sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
README.md sys/README.md: Add a section for documentation 2023-08-03 11:07:41 -03:00

FreeBSD Kernel Source:

This directory contains the source files and build glue that make up the FreeBSD kernel and its modules, including both original and contributed software.

Kernel configuration files are located in the conf/ subdirectory of each architecture. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries. LINT is a compile-only configuration used to maximize build coverage and detect regressions.

Documentation:

Source code documentation is maintained in a set of man pages, under section 9. These pages are located in share/man/man9, from the top-level of the src tree. Consult intro(9) for an overview of existing pages.

Some additional high-level documentation of the kernel is maintained in the Architecture Handbook.

Source Roadmap:

Directory Description
amd64 AMD64 (64-bit x86) architecture support
arm 32-bit ARM architecture support
arm64 64-bit ARM (AArch64) architecture support
cam Common Access Method storage subsystem - cam(4) and ctl(4)
cddl CDDL-licensed optional sources such as DTrace
conf kernel build glue
compat Linux compatibility layer, FreeBSD 32-bit compatibility
contrib 3rd-party imported software such as OpenZFS
crypto crypto drivers
ddb interactive kernel debugger - ddb(4)
fs most filesystems, excluding UFS, NFS, and ZFS
dev device drivers and other arch independent code
gdb kernel remote GDB stub - gdb(4)
geom GEOM framework - geom(4)
i386 i386 (32-bit x86) architecture support
kern main part of the kernel
libkern libc-like and other support functions for kernel use
modules kernel module infrastructure
net core networking code
net80211 wireless networking (IEEE 802.11) - net80211(4)
netgraph graph-based networking subsystem - netgraph(4)
netinet IPv4 protocol implementation - inet(4)
netinet6 IPv6 protocol implementation - inet6(4)
netipsec IPsec protocol implementation - ipsec(4)
netpfil packet filters - ipfw(4), pf(4), and ipfilter(4)
opencrypto OpenCrypto framework - crypto(7)
powerpc PowerPC/POWER (32 and 64-bit) architecture support
riscv 64-bit RISC-V architecture support
security security facilities - audit(4) and mac(4)
sys kernel headers
tests kernel unit tests
ufs Unix File System - ffs(7)
vm virtual memory system
x86 code shared by AMD64 and i386 architectures