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zfs/include/sys
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Brian Behlendorf 165f13c33a Improved vmem cached deadlock detection 
The entire goal of performing the slab allocations asynchronously
is to be able to detect when a vmalloc() deadlocks.  In this case,
and only this case, do we want to start allocating emergency objects.
The trick here is to minimize false positives because the overhead
of tracking emergency objects is far higher than normal slab objects.

With that goal in mind the code was reworked to be less sensitive
to slow allocations by increasing the wait time.  Once a cache is
is marked deadlocked all subsequent allocations which can not be
satisfied with existing cache objects will immediately allocate new
emergency objects.  This behavior persists until the asynchronous
allocation completes and clears the deadlocked flag.

The result of these tweaks is that far fewer emergency objects
get created which is important because this minimizes the cost of
releasing them latter in kmem_cache_free().

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
 		2012-11-06 14:54:15 -08:00
..
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.h Add VSA_ACE_* and MAX_ACL_ENTRIES defines 2011-01-27 16:06:09 -08:00
acl_impl.h Public Release Prep 2010-05-17 15:18:00 -07:00
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 Condition variable reference counts 2012-11-06 14:48:55 -08:00
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 Improved vmem cached deadlock detection 2012-11-06 14:54:15 -08:00
kobj.h Public Release Prep 2010-05-17 15:18:00 -07:00
kstat.h Add KSTAT_TYPE_TXG type 2012-11-02 15:17:40 -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
types.h splat: Cleanup headers 2012-11-06 14:48:56 -08:00
types32.h Public Release Prep 2010-05-17 15:18:00 -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.h Renamed 'struct fid' for NFS 2011-04-29 12:10:54 -07:00
vfs_opreg.h Public Release Prep 2010-05-17 15:18:00 -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