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opnsense-src/sys
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Konstantin Belousov 5c7bebf961 The process spin lock currently has the following distinct uses: 
- Threads lifetime cycle, in particular, counting of the threads in
  the process, and interlocking with process mutex and thread lock.
  The main reason of this is that turnstile locks are after thread
  locks, so you e.g. cannot unlock blockable mutex (think process
  mutex) while owning thread lock.

- Virtual and profiling itimers, since the timers activation is done
  from the clock interrupt context.  Replace the p_slock by p_itimmtx
  and PROC_ITIMLOCK().

- Profiling code (profil(2)), for similar reason.  Replace the p_slock
  by p_profmtx and PROC_PROFLOCK().

- Resource usage accounting.  Need for the spinlock there is subtle,
  my understanding is that spinlock blocks context switching for the
  current thread, which prevents td_runtime and similar fields from
  changing (updates are done at the mi_switch()).  Replace the p_slock
  by p_statmtx and PROC_STATLOCK().

The split is done mostly for code clarity, and should not affect
scalability.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-26 14:10:00 +00:00
..
amd64 Revert r274772: it is not valid on MIPS 2014-11-25 03:50:31 +00:00
arm Add new devices to the config. 2014-11-25 16:24:31 +00:00
boot Fix style(9). 2014-11-25 18:58:40 +00:00
bsm
cam Coalesce last data move and command status for read commands. 2014-11-25 17:53:35 +00:00
cddl Revert r273060 per discussion with avg@ as we need to make L2ARC 2014-11-26 02:20:25 +00:00
compat The process spin lock currently has the following distinct uses: 2014-11-26 14:10:00 +00:00
conf o Add Virtio MMIO bus driver to config 2014-11-25 16:53:22 +00:00
contrib Add missing headers needed by write(). 2014-11-25 02:58:38 +00:00
crypto Fix gcc build: preserve const qualifier when casting input values. 2014-11-11 13:37:28 +00:00
ddb ddb: ANSI-fy function declarations. 2014-10-12 18:01:52 +00:00
dev Some microoptimizations. 2014-11-26 13:56:54 +00:00
fs The process spin lock currently has the following distinct uses: 2014-11-26 14:10:00 +00:00
gdb Add support for gdb's memory searching capabilities to our in-kernel gdb 2014-09-05 16:40:47 +00:00
geom Actually, that was a bad idea. Go back to MAXPARTITIONS. 2014-11-20 17:31:25 +00:00
gnu reiserfs: Use signed i_nlink 2014-09-25 19:10:32 +00:00
i386 MFamd64: Check for invalid flags in the machine context in sigreturn() 2014-11-25 12:52:00 +00:00
isa
kern The process spin lock currently has the following distinct uses: 2014-11-26 14:10:00 +00:00
kgssapi Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
libkern Sync with userland variant. 2014-11-17 21:01:35 +00:00
mips Add support for Buffalo WZR-HP-AG300H atheros MIPS router. 2014-11-25 17:33:22 +00:00
modules There never was a PC Card joystick attachment that worked. Kill the 2014-11-22 20:31:20 +00:00
net Add a sysctl `net.link.tap.deladdrs_on_close' to configure whether tap 2014-11-24 14:00:27 +00:00
net80211 Fix multiple incorrect SYSCTL arguments in the kernel: 2014-10-21 07:31:21 +00:00
netgraph In preparation of merging projects/sendfile, transform bare access to 2014-11-12 09:57:15 +00:00
netinet Re-introduce padding fields removed with r264321 to keep 2014-11-17 14:56:02 +00:00
netinet6 Skip L2 addresses lookups for p2p interfaces. 2014-11-24 21:51:43 +00:00
netipsec Count statistics for the specific address family. 2014-11-13 12:58:33 +00:00
netnatm
netpfil pf(4) needs to have a correct checksum during its processing. 2014-11-19 13:31:08 +00:00
netsmb
nfs Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
nfsclient Follow up to r225617. In order to maximize the re-usability of kernel code 2014-10-16 18:04:43 +00:00
nfsserver Change NFS readdir() to only ignore cookies preceding the given offset for 2014-07-01 20:00:35 +00:00
nlm Avoid dynamic syscall overhead for statically compiled modules. 2014-10-26 19:42:44 +00:00
ofed In preparation of merging projects/sendfile, transform bare access to 2014-11-12 09:57:15 +00:00
opencrypto Fix build for kernels without COMPAT_FREEBSD32. 2014-09-22 17:32:27 +00:00
pc98 Renove faith(4) and faithd(8) from base. It looks like industry 2014-11-09 21:33:01 +00:00
powerpc Revert r274772: it is not valid on MIPS 2014-11-25 03:50:31 +00:00
rpc In preparation of merging projects/sendfile, transform bare access to 2014-11-12 09:57:15 +00:00
security Replace dev_clone with cdevpriv(9) KPI in audit_pipe code. 2014-08-20 16:04:30 +00:00
sparc64 Revert r274772: it is not valid on MIPS 2014-11-25 03:50:31 +00:00
sys The process spin lock currently has the following distinct uses: 2014-11-26 14:10:00 +00:00
teken
tools Allow the make_dtb script to work outside of a "make buildkernel" context 2014-08-30 22:39:15 +00:00
ufs Merge from projects/sendfile: 2014-11-23 12:01:52 +00:00
vm We already have "int i" in this scope. 2014-11-24 07:57:20 +00:00
x86 Improve support for XSAVE with debuggers. 2014-11-21 20:53:17 +00:00
xdr
xen opt_global.h is included automatically in the build. No need to 2014-11-18 17:06:56 +00:00
Makefile Remove "pci" from CSCOPEDIRS. 2014-09-23 06:32:19 +00:00