d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
426da3bcfb
freebsd-nq/sys/dev
History
Alfred Perlstein 426da3bcfb SMP Lock struct file, filedesc and the global file list. 
Seigo Tanimura (tanimura) posted the initial delta.

I've polished it quite a bit reducing the need for locking and
adapting it for KSE.

Locks:

1 mutex in each filedesc
   protects all the fields.
   protects "struct file" initialization, while a struct file
     is being changed from &badfileops -> &pipeops or something
     the filedesc should be locked.

1 mutex in each struct file
   protects the refcount fields.
   doesn't protect anything else.
   the flags used for garbage collection have been moved to
     f_gcflag which was the FILLER short, this doesn't need
     locking because the garbage collection is a single threaded
     container.
  could likely be made to use a pool mutex.

1 sx lock for the global filelist.

struct file *	fhold(struct file *fp);
        /* increments reference count on a file */

struct file *	fhold_locked(struct file *fp);
        /* like fhold but expects file to locked */

struct file *	ffind_hold(struct thread *, int fd);
        /* finds the struct file in thread, adds one reference and
                returns it unlocked */

struct file *	ffind_lock(struct thread *, int fd);
        /* ffind_hold, but returns file locked */

I still have to smp-safe the fget cruft, I'll get to that asap.
2002-01-13 11:58:06 +00:00
..
aac SMP Lock struct file, filedesc and the global file list. 2002-01-13 11:58:06 +00:00
acpica find_devclass -> devclass_find. 2002-01-08 19:14:59 +00:00
advansys Restore I/O port resources to the condition before adv_isa_probe() is 2001-05-06 09:28:18 +00:00
agp Allow retrieval of the virtual address of the AGP aperture 2001-12-19 08:54:29 +00:00
aha
ahb
aic Migrate to PCMCIA_CARD() macros 2001-11-15 07:52:49 +00:00
aic7xxx Remove reliance on i++ in multiple arguments to a function. C does not 2001-12-16 17:38:30 +00:00
amd Move unused functions into #if 0 ... #endif. 2001-05-06 08:07:10 +00:00
amr Staticise the amr devclass. 2002-01-08 06:47:02 +00:00
an Staticise the flash buffer, since it isn't needed anywhere else. 2002-01-08 10:25:12 +00:00
ar Move the isa parts to a separate file. 2001-04-16 13:20:39 +00:00
asr Convert C++ style comments to proper C ones. 2001-12-13 23:48:34 +00:00
ata Update of the VIA 82c686b southbridge data corruption fix, also 2002-01-01 19:58:11 +00:00
atkbdc Add another PS2 PNP id. 2001-12-19 13:32:21 +00:00
awi Add NEWCARD support to awi. 2001-11-19 06:42:11 +00:00
bge Fix warnings: the bge_bpd_read*() functions are not used (#ifdef notdef) 2001-12-18 08:03:25 +00:00
bktr Modify the critical section API as follows: 2001-12-18 00:27:18 +00:00
buslogic Use ANSI C string contatenation instead of a multi-line string literal. 2001-12-13 11:14:28 +00:00
cardbus Add support for suspending/resuming CardBus bridges. 2001-12-15 05:58:28 +00:00
ccd Reduce kernel stack usage of ccdinit() by MAXPATHLEN by using MALLOC(9). 2001-12-30 17:34:19 +00:00
ciss Fix warning; line 1640: ciss_abort_request defined but not used. 2001-12-18 08:01:48 +00:00
cm - generic Arcnet framework 2002-01-08 20:03:13 +00:00
cnw Use enumeration types for CARD_SET_RES_FLAGS. 2001-05-08 23:57:32 +00:00
cs Migrate to PCMCIA_CARD() macros 2001-11-15 07:52:49 +00:00
ct Added Logitec LHA-301 pnp id. 2001-10-09 15:30:19 +00:00
cy Change the preemption code for software interrupt thread schedules and 2002-01-05 08:47:13 +00:00
dc Fix the "conexant chips don't work in full duplexmode" problem. According 2001-12-19 18:23:45 +00:00
de No FreeBSD/vax here either. 2001-11-03 08:32:28 +00:00
dec Introduce a boot environment variable (clock_compat_osf1) which can 2001-11-03 17:22:50 +00:00
dgb Don't call cdevsw_add(). 2001-11-04 09:09:41 +00:00
digi Staticise the con_bios and digi_devclass variables, since they aren't needed 2002-01-08 10:24:34 +00:00
dpt Fix a couple of bogus enums. 2002-01-08 06:47:55 +00:00
ed Patch to allow the ed driver interrupt routine to terminate if the 2001-11-24 16:15:18 +00:00
eisa
em -Remove unneeded include stddef.h 2001-12-20 17:55:49 +00:00
en
ep More devices. Obtained from NetBSD. 2001-11-15 07:57:38 +00:00
ex
fb Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
fdc Change the test for _MACHINE_ARCH == i386 into #ifdef __i386__ since it 2001-12-18 22:16:33 +00:00
fe Migrate to PCMCIA_CARD() macros 2001-11-15 07:52:49 +00:00
fxp Explicitly reload the multicast filters when the hardware is reinitialized 2002-01-07 15:08:54 +00:00
gfb We need to operate on struct thread now, not struct proc. 2001-11-08 01:49:06 +00:00
gx Don't pass an interface pointer to VLAN_INPUT{,_TAG}. Get it from the 2001-12-03 17:28:27 +00:00
hea
hfa Applied the patch to fix HARP ATM that was broken when KAME IPv6 came 2001-06-20 17:09:14 +00:00
ic Oops, forgot to commit one file in the fd driver mega update. Here it 2001-12-16 07:52:13 +00:00
ichsmb Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
ida Fix a signed bug in the crashdump code for systems with > 2GB of ram. 2001-11-13 01:08:54 +00:00
ie Repo copy i82586.h to dev/ic/i82586.h. 2001-07-02 05:29:58 +00:00
iicbus Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
isp Add missing move of relative offset for CTIO2 updates. 2002-01-11 23:48:25 +00:00
ispfw Roll firmware to latest offerings... Fixes a number of f/w related 2001-12-13 00:09:06 +00:00
joy Revert change that breaks the joy module. joydevclass must not be static. 2002-01-08 18:27:49 +00:00
kbd Refine ACPI/PnP BIOS probe/attach routines a bit. 2001-09-15 04:38:20 +00:00
lge Do not call mii_polltick() immediately after mii_tick(). 2001-09-29 19:31:29 +00:00
lmc
lnc - Don't overwrite inb, inw and outw. 2001-07-04 13:00:21 +00:00
mc146818
mca
mcd Don't call cdevsw_add(). 2001-11-04 08:58:22 +00:00
md Actually make use of the md_version field of 'struct mdio'. In order 2001-12-20 06:38:21 +00:00
mii Fix reversed definitions for the bits that select half vs. full duplex. 2002-01-10 18:06:41 +00:00
mlx Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
mly Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
mse KSE Milestone 2 2001-09-12 08:38:13 +00:00
musycc Fix warnings: 2001-06-15 00:19:43 +00:00
ncv Staticise a couple of debugging variables. 2002-01-08 19:37:12 +00:00
nge Don't pass an interface pointer to VLAN_INPUT{,_TAG}. Get it from the 2001-12-03 17:28:27 +00:00
nmdm Don't call cdevsw_add(). 2001-11-04 15:55:17 +00:00
nsp o Add KLD support for scsi_low. 2001-12-15 12:32:23 +00:00
null Send the remains (such as I have located) of "block major numbers" to 2001-03-26 12:41:29 +00:00
ofw Move the make_dev call from the cn_probe to a sysinit that runs at 2002-01-09 04:03:55 +00:00
pccard Regenerate from 1.26 pccarddevs 2002-01-08 20:52:57 +00:00
pccbb Add support for suspending/resuming CardBus bridges. 2001-12-15 05:58:28 +00:00
pcf Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
pci Implement 2 small helper functions: 2002-01-10 00:56:02 +00:00
pcic Fix missing comma in previous commit. 2001-12-28 23:51:48 +00:00
pdq Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
ppbus Make this driver a better citizen by moving dev creation and 2001-12-19 19:37:31 +00:00
ppc Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
random Staticise the random_state array. 2002-01-10 00:09:21 +00:00
ray Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
rc Change the preemption code for software interrupt thread schedules and 2002-01-05 08:47:13 +00:00
rp Force the RxBuf and TxBuf arrays to be aligned on 16-bit boundaries to 2001-11-05 12:57:46 +00:00
sbni Rename a variable that might accidentally be duplicated elsewhere. 2002-01-08 19:36:54 +00:00
scd Don't call cdevsw_add() 2001-11-04 08:54:15 +00:00
sf Remove printf's on mbuf/cluster allocation failures. There are now 2001-12-14 05:56:35 +00:00
si KSE Milestone 2 2001-09-12 08:38:13 +00:00
sio Change the preemption code for software interrupt thread schedules and 2002-01-05 08:47:13 +00:00
sk Remove printf's on mbuf/cluster allocation failures. There are now 2001-12-14 05:56:35 +00:00
smbus SMBus support for the AMD 756 power management unit. See smbus(4), 2001-09-16 22:35:07 +00:00
sn Migrate to PCMCIA_CARD() macros 2001-11-15 07:52:49 +00:00
snc
snp Check the return value of tsleep() in snpread(). This may be 2001-11-24 15:59:46 +00:00
sound Add the system default timer engine. 2002-01-04 01:16:18 +00:00
speaker KSE Milestone 2 2001-09-12 08:38:13 +00:00
sr
stg Staticise a couple of debugging variables. 2002-01-08 19:37:12 +00:00
streams SMP Lock struct file, filedesc and the global file list. 2002-01-13 11:58:06 +00:00
sym Comment tokens after #undef <macroname> and #endif. 2001-12-13 11:12:30 +00:00
syscons In the word selection mode don't append newline if the word ends at the 2002-01-05 16:52:44 +00:00
tdfx SMP Lock struct file, filedesc and the global file list. 2002-01-13 11:58:06 +00:00
tga Add the TGA video driver. This is a great accomplishtment and will help 2001-11-01 08:26:30 +00:00
ti Remove printf's on mbuf/cluster allocation failures. There are now 2001-12-14 05:56:35 +00:00
twe Update to C99, s/__FUNCTION__/__func__/, 2001-12-10 08:09:49 +00:00
tx Update tx(4) to always enable vlan(4) support. 2001-09-05 23:04:53 +00:00
txp Don't pass an interface pointer to VLAN_INPUT{,_TAG}. Get it from the 2001-12-03 17:28:27 +00:00
usb Staticise a couple of things that shouldn't be leaked into the 2002-01-08 10:32:33 +00:00
vinum Don't call cdevsw_{add,remove}(). 2001-11-04 11:55:19 +00:00
vr Remove printf's on mbuf/cluster allocation failures. There are now 2001-12-14 05:56:35 +00:00
vx Quiet a variable format-string warning. 2001-07-19 02:16:24 +00:00
wds
wi put function return types on a line by themselves as per style(9) 2001-12-27 20:12:03 +00:00
wl KSE Milestone 2 2001-09-12 08:38:13 +00:00
xe Add some seat belts. If we set the error rc, then return it and don't 2001-08-29 05:11:44 +00:00