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zfs/include/os/linux/spl/sys
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Serapheim Dimitropoulos ec1fea4516
Use percpu_counter for obj_alloc counter of Linux-backed caches 
A previous commit enabled the tracking of object allocations
in Linux-backed caches from the SPL layer for debuggability.
The commit is: 9a170fc6fe

Unfortunately, it also introduced minor performance regressions
that were highlighted by the ZFS perf test-suite. Within Delphix
we found that the regression would be from -1%, all the way up
to -8% for some workloads.

This commit brings performance back up to par by creating a
separate counter for those caches and making it a percpu in
order to avoid lock-contention.

The initial performance testing was done by myself, and the
final round was conducted by @tonynguien who was also the one
that discovered the regression and highlighted the culprit.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #10397
 		2020-06-26 18:06:50 -07:00
..
Makefile.am Drop unnecessary srcdir paths 2020-06-24 18:20:18 -07:00
acl.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
atomic.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
byteorder.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
callb.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
callo.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
cmn_err.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
condvar.h Disambiguate condvar API contract 2020-06-18 10:17:50 -07:00
console.h Mark functions as static 2020-06-18 12:20:38 -07:00
cred.h Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
ctype.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
debug.h Remove stale ASSERTV comment 2019-12-06 09:33:27 -08:00
disp.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
dkio.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
errno.h Move platform dependent errno aliases 2019-10-25 13:40:50 -07:00
fcntl.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
file.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
inttypes.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
isa_defs.h Correctly handle the x32 ABI 2020-05-28 10:28:20 -07:00
kmem.h Move GFP flags kernel compatibility code 2020-06-08 16:33:46 -07:00
kmem_cache.h Use percpu_counter for obj_alloc counter of Linux-backed caches 2020-06-26 18:06:50 -07:00
kstat.h Linux 5.6 compat: struct proc_ops 2020-02-07 11:03:53 -08:00
list.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
mod_os.h Wrap Linux module macros 2019-11-01 10:41:03 -07:00
mutex.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
param.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
proc.h Fix zfs send progress reporting 2020-04-20 10:12:48 -07:00
processor.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
procfs_list.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
random.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
rwlock.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
shrinker.h Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
sid.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
signal.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
simd.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
stat.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
strings.h Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
sunddi.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
sysmacros.h Move linux qsort def to platform header 2019-12-03 09:49:40 -08:00
systeminfo.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
taskq.h Improve performance of zio_taskq_member 2020-03-03 10:29:38 -08:00
thread.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
time.h Linux 5.6 compat: time_t 2020-02-27 09:31:02 -08:00
timer.h Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
trace.h Add prototypes 2020-06-18 12:21:32 -07:00
trace_spl.h Add tracepoints for taskq entry lifetime events 2019-11-01 13:14:54 -07:00
trace_taskq.h Add tracepoints for taskq entry lifetime events 2019-11-01 13:14:54 -07:00
tsd.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
types.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
types32.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
uio.h Add convenience wrappers for common uio usage 2020-06-14 10:09:55 -07:00
user.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vfs.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vmem.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vmsystm.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vnode.h Add zfs_file_* interface, remove vnodes 2019-11-21 09:32:57 -08:00
wait.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
zmod.h Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
zone.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00