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71c9f0b00307e6ee703eef9eba91e7640731c458
mirror_zfs/include/sys
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Brian Behlendorf 71c9f0b003 Make kstat.ks_update() callback atomic 
Move the kstat ks_update() callback under the ks_lock.  This
enables dynamically sized kstats without modification to the
kstat API.

  * Create a kstat with the KSTAT_FLAG_VIRTUAL flag.
  * Register a ->ks_update() callback which does:
    o Frees any existing ks_data buffer.
    o Set ks_data_size to the kstat array size.
    o Set ks_data to an allocated buffer of size ks_data_size
    o Populate the array of buffers with the required data.

The buffer allocated in the ks_update() callback is guaranteed
to remain allocated and valid while the proc sequence handler
iterates over the buffer.  The lock will not be dropped until
kstat_seq_stop() function is run making it safe for concurrent
access.  To allow the ks_update() callback to perform memory
allocations the lock was changed to a mutex.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-10-23 09:36:19 -07:00
..
fm
Remove autotools products
2012-08-27 11:46:23 -07:00
fs
Remove autotools products
2012-08-27 11:46:23 -07:00
sysevent
Remove autotools products
2012-08-27 11:46:23 -07:00
acl_impl.h
Public Release Prep
2010-05-17 15:18:00 -07:00
acl.h
Add VSA_ACE_* and MAX_ACL_ENTRIES defines
2011-01-27 16:06:09 -08:00
atomic.h
atomic_*_*_nv() functions need to return the new value atomically.
2010-09-17 16:03:25 -07:00
attr.h
Public Release Prep
2010-05-17 15:18:00 -07:00
bitmap.h
Public Release Prep
2010-05-17 15:18:00 -07:00
bootconf.h
Public Release Prep
2010-05-17 15:18:00 -07:00
bootprops.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
buf.h
Public Release Prep
2010-05-17 15:18:00 -07:00
byteorder.h
Public Release Prep
2010-05-17 15:18:00 -07:00
callb.h
Public Release Prep
2010-05-17 15:18:00 -07:00
cmn_err.h
Public Release Prep
2010-05-17 15:18:00 -07:00
compress.h
Public Release Prep
2010-05-17 15:18:00 -07:00
condvar.h
Remove condition variable names
2012-04-06 12:06:19 -07:00
conf.h
Public Release Prep
2010-05-17 15:18:00 -07:00
console.h
Public Release Prep
2010-05-17 15:18:00 -07:00
cpupart.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
cpuvar.h
Public Release Prep
2010-05-17 15:18:00 -07:00
crc32.h
Public Release Prep
2010-05-17 15:18:00 -07:00
cred.h
Add crgetfsuid()/crgetfsgid() helpers
2011-03-22 12:18:44 -07:00
ctype.h
Public Release Prep
2010-05-17 15:18:00 -07:00
ddi.h
Public Release Prep
2010-05-17 15:18:00 -07:00
debug.h
Add --enable-debug-log configure option
2012-02-02 11:27:54 -08:00
dirent.h
Public Release Prep
2010-05-17 15:18:00 -07:00
disp.h
Add kpreempt_[dis|en]able macros in <sys/disp.h>
2012-08-24 15:18:38 -07:00
dkio.h
Add DKIOCTRIM for TRIM support.
2012-09-02 14:22:01 -07:00
dklabel.h
Public Release Prep
2010-05-17 15:18:00 -07:00
dnlc.h
Add dnlc_reduce_cache() support
2011-04-06 20:06:03 -07:00
dumphdr.h
Public Release Prep
2010-05-17 15:18:00 -07:00
efi_partition.h
Public Release Prep
2010-05-17 15:18:00 -07:00
errno.h
Public Release Prep
2010-05-17 15:18:00 -07:00
extdirent.h
Add missing headers
2011-01-27 16:06:09 -08:00
fcntl.h
Use Linux flock struct
2011-02-23 14:32:15 -08:00
file.h
Add FIGNORECASE define
2011-01-27 16:06:09 -08:00
idmap.h
Add missing headers
2011-01-27 16:06:09 -08:00
int_limits.h
Public Release Prep
2010-05-17 15:18:00 -07:00
int_types.h
Public Release Prep
2010-05-17 15:18:00 -07:00
inttypes.h
Public Release Prep
2010-05-17 15:18:00 -07:00
isa_defs.h
Define the needed ISA types for ARM
2012-05-03 09:56:15 -07:00
kidmap.h
Add missing headers
2011-01-27 16:06:09 -08:00
kmem.h
Add KMC_NOEMERGENCY slab flag
2012-09-07 14:27:03 -07:00
kobj.h
Public Release Prep
2010-05-17 15:18:00 -07:00
kstat.h
Make kstat.ks_update() callback atomic
2012-10-23 09:36:19 -07:00
list.h
Add list_link_replace() function
2010-08-27 14:23:48 -07:00
mkdev.h
Public Release Prep
2010-05-17 15:18:00 -07:00
mntent.h
Public Release Prep
2010-05-17 15:18:00 -07:00
modctl.h
Public Release Prep
2010-05-17 15:18:00 -07:00
mode.h
Add vn_mode_to_vtype/vn_vtype to_mode helpers
2011-01-12 11:38:04 -08:00
mount.h
Public Release Prep
2010-05-17 15:18:00 -07:00
mutex.h
Mutex ASSERT on self deadlock
2012-08-27 12:00:55 -07:00
note.h
Public Release Prep
2010-05-17 15:18:00 -07:00
open.h
Public Release Prep
2010-05-17 15:18:00 -07:00
param.h
Correct MAXUID
2011-04-29 13:58:45 -07:00
pathname.h
Public Release Prep
2010-05-17 15:18:00 -07:00
policy.h
Minor policy interface
2011-01-27 16:06:09 -08:00
pool.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
priv_impl.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
proc.h
Cleanly split Linux proc.h (fs) from conflicting Solaris proc.h (process)
2010-06-11 15:57:25 -07:00
processor.h
Public Release Prep
2010-05-17 15:18:00 -07:00
pset.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
random.h
Public Release Prep
2010-05-17 15:18:00 -07:00
refstr.h
Public Release Prep
2010-05-17 15:18:00 -07:00
resource.h
Public Release Prep
2010-05-17 15:18:00 -07:00
rwlock.h
Linux 3.2 compat: rw_semaphore.wait_lock is raw
2012-01-11 16:28:05 -08:00
sdt.h
Public Release Prep
2010-05-17 15:18:00 -07:00
sid.h
Add ksid_index_t and ksid_t types
2011-01-27 16:06:09 -08:00
signal.h
Split <sys/debug.h> header
2010-07-20 13:29:35 -07:00
stat.h
Public Release Prep
2010-05-17 15:18:00 -07:00
stropts.h
Public Release Prep
2010-05-17 15:18:00 -07:00
sunddi.h
Remove Solaris module emulation
2012-05-18 13:57:44 -07:00
sunldi.h
Public Release Prep
2010-05-17 15:18:00 -07:00
sysdc.h
Stub out additional missing headers
2010-06-11 15:57:25 -07:00
sysevent.h
Public Release Prep
2010-05-17 15:18:00 -07:00
sysmacros.h
PowerPC Compatibility
2012-07-02 09:33:09 -07:00
systeminfo.h
Read the /etc/hostid file directly.
2011-06-24 09:58:03 -07:00
systm.h
Public Release Prep
2010-05-17 15:18:00 -07:00
t_lock.h
Public Release Prep
2010-05-17 15:18:00 -07:00
taskq.h
Remove TQ_SLEEP -> KM_SLEEP mapping
2012-09-12 11:41:42 -07:00
thread.h
PowerPC Compatibility
2012-07-02 09:33:09 -07:00
time.h
Allow 64-bit timestamps to be set on 64-bit kernels
2011-12-12 11:06:03 -08:00
timer.h
Minor cleanup and Solaris API additions.
2010-06-11 15:57:25 -07:00
tsd.h
Prepend spl_ to all init/fini functions
2011-11-11 09:18:28 -08:00
types32.h
Public Release Prep
2010-05-17 15:18:00 -07:00
types.h
Linux 2.6.39 compat, zlib_deflate_workspacesize()
2011-04-20 14:39:15 -07:00
u8_textprep.h
Public Release Prep
2010-05-17 15:18:00 -07:00
uio.h
Add xuio_* structures and typedefs.
2010-06-11 15:57:25 -07:00
unistd.h
Public Release Prep
2010-05-17 15:18:00 -07:00
utsname.h
Public Release Prep
2010-05-17 15:18:00 -07:00
va_list.h
Public Release Prep
2010-05-17 15:18:00 -07:00
varargs.h
Public Release Prep
2010-05-17 15:18:00 -07:00
vfs_opreg.h
Public Release Prep
2010-05-17 15:18:00 -07:00
vfs.h
Renamed 'struct fid' for NFS
2011-04-29 12:10:54 -07:00
vmsystm.h
Public Release Prep
2010-05-17 15:18:00 -07:00
vnode.h
Add interface for file hole punching.
2012-10-04 16:22:07 -07:00
zmod.h
Prepend spl_ to all init/fini functions
2011-11-11 09:18:28 -08:00
zone.h
Public Release Prep
2010-05-17 15:18:00 -07:00