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20c510f826
freebsd-skq/sys
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Luigi Rizzo 20c510f826 Properly fix callout handling by putting all the per-cpu info in 
struct callout_cpu. From the comment in the file:

+ * There is one struct callout_cpu per cpu, holding all relevant
+ * state for the callout processing thread on the individual CPU.
+ * In particular:
+ *     cc_ticks is incremented once per tick in callout_cpu().
+ *     It tracks the global 'ticks' but in a way that the individual
+ *     threads should not worry about races in the order in which
+ *     hardclock() and hardclock_cpu() run on the various CPUs.
+ *     cc_softclock is advanced in callout_cpu() to point to the
+ *     first entry in cc_callwheel that may need handling. In turn,
+ *     a softclock() is scheduled so it can serve the various entries i
+ *     such that cc_softclock <= i <= cc_ticks .

Together with a smaller patch committed in september, this fixes a
bug that affects 8.0 with apps that rely on callouts to fire exactly
in the number of ticks specified (qemu among them).
Right now, callouts in 8.0 fire one tick late.

This was discussed in september with JeffR and jhb

MFC after:	3 days
2009-12-14 12:23:46 +00:00
..
amd64 For ia32 syscall(), call cpu_set_syscall_retval(). Update comment inside 2009-12-12 20:11:31 +00:00
arm Fix the build. 2009-12-08 21:42:04 +00:00
boot Add support for memory disk (md). The size of the memory disk 2009-12-13 01:20:32 +00:00
bsm Add audit events for process descriptor system calls, which will appear in 2009-09-29 21:25:59 +00:00
cam Clear result before requesting XPT_PATH_INQ. 2009-12-09 14:21:21 +00:00
cddl Change VOP_FSYNC for zfs vnode from VOP_PANIC to zfs_freebsd_fsync(), 2009-12-05 20:36:42 +00:00
compat Regenerate. 2009-12-04 21:53:20 +00:00
conf MFp4: 2009-12-06 00:10:13 +00:00
contrib Merge ACPICA 20091112. 2009-11-16 21:47:12 +00:00
crypto
ddb Among signal generation syscalls, only sigqueue(2) is allowed by POSIX 2009-11-17 11:39:15 +00:00
dev Only set ATA_CHECKS_CABLE for chip versions that actually support 2009-12-13 20:36:42 +00:00
fs Allow using IPv6 in nfsrvd_sentcache() callback. 2009-12-08 23:43:50 +00:00
gdb
geom Change 'load' balancing mode algorithm: 2009-12-03 21:47:51 +00:00
gnu Remove unused code. 2009-12-03 18:16:14 +00:00
i386 for PV XEN translate page table entries from machine (real) to physical (logical) addresses so that kgdb can 2009-12-10 07:48:47 +00:00
ia64 In exception_save, write-back ar.rnat after switching the backing- 2009-12-08 00:44:23 +00:00
isa - Partially revert hackish r198964 and r199002. 2009-11-12 17:56:56 +00:00
kern Properly fix callout handling by putting all the per-cpu info in 2009-12-14 12:23:46 +00:00
kgssapi When the KOBJMETHOD() macro was updated, it resulted in the 2009-06-14 17:33:46 +00:00
libkern Move inet_aton() (specular to inet_ntoa(), already present in libkern) 2009-11-12 00:46:28 +00:00
mips Make admsw(4) compile again fixing typos and adding the missing variable 2009-12-13 20:27:59 +00:00
modules amdsbwd: new driver for AMD SB600/SB7xx watchdog timer 2009-11-30 11:44:03 +00:00
net Throughout the network stack we have a few places of 2009-12-13 13:57:32 +00:00
net80211 Fix typo in comment 2009-12-08 00:54:08 +00:00
netatalk Reverse misordered unlock and lock in at_control for netatalk phase I 2009-08-12 10:44:13 +00:00
netgraph Take a step towards removing if_watchdog/if_timer. Don't explicitly set 2009-11-06 14:55:01 +00:00
netinet Throughout the network stack we have a few places of 2009-12-13 13:57:32 +00:00
netinet6 Throughout the network stack we have a few places of 2009-12-13 13:57:32 +00:00
netipsec Enable IPcomp by default. 2009-11-29 20:47:43 +00:00
netipx Use queue(9) instead of hand-crafted link lists for the global IPX 2009-06-24 20:57:50 +00:00
netnatm
netncp
netsmb Don't print out a message on loading a module. 'kldload -v' and 'kldstat 2009-09-10 18:33:08 +00:00
nfs Revert rev 192323 (nfs_common.c only): 2009-07-12 03:53:52 +00:00
nfsclient Add a few more V_hacks to nfsclient to allow machines with a VIMAGE 2009-12-13 11:06:39 +00:00
nfsserver Properly return an error reply if an NFS remove or link operation fails. 2009-12-03 20:59:28 +00:00
nlm Handle GRANTED_RES messages more gracefully: Send along a grant cookie 2009-10-07 19:50:14 +00:00
opencrypto In case the compression result is the same size as the orignal version, 2009-11-29 17:53:57 +00:00
pc98 Fix cut'n paste on the AR9280 entry. 2009-12-02 21:22:10 +00:00
pci intpm/sb700: force polling mode if configured interrupt is SMI 2009-09-19 08:56:28 +00:00
powerpc Unbreak build. 2009-12-06 17:26:43 +00:00
rpc Add a check for the connection being shut down to the krpc 2009-11-08 19:02:13 +00:00
security Having thrown the cat out of the house, add a necessary include. 2009-09-08 13:24:36 +00:00
sparc64 Add additional checks of the kernel stack addresses in order to 2009-12-08 20:18:54 +00:00
sun4v Add additional checks of the kernel stack addresses in order to 2009-12-08 20:18:54 +00:00
sys Throughout the network stack we have a few places of 2009-12-13 13:57:32 +00:00
teken Place home and end before insert and delete. 2009-11-11 09:43:26 +00:00
tools Output a comment on top of each generated file explaining where it came 2009-10-25 09:48:21 +00:00
ufs Don't build ufs_gjournal.c at all if UFS_GJOURNAL option is not given 2009-09-22 16:22:05 +00:00
vm Remove trailing ";" in UMA_HASH_INSERT and UMA_HASH_REMOVE macros. 2009-12-05 17:45:56 +00:00
xdr Add a check for a NULL mbuf ptr at the beginning of xdrmbuf_inline() 2009-08-12 16:27:51 +00:00
xen Temporarily revert the new-bus locking for 8.0 release. It will be 2009-08-20 19:17:53 +00:00
Makefile