Commit Graph

3680 Commits

Author SHA1 Message Date
Brian Behlendorf e163b08ba3 Add fix-stack-dmu_objset_snapshot topic branch
Reduce stack usage by 276 bytes by moving the snaparg struct from the
stack to the heap.  We have limited stack space we must not waste.
2010-06-16 14:39:06 -07:00
Brian Behlendorf a2ba5b83f8 Merge branch 'fix-stack-noinline' into refs/top-bases/fix-branch 2010-06-16 14:35:14 -07:00
Brian Behlendorf 94a22f54e5 Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-16 14:35:14 -07:00
Brian Behlendorf 23d291df44 New TopGit dependency: fix-stack-noinline 2010-06-16 14:35:11 -07:00
Brian Behlendorf bbdb8184ec Add fix-stack-noinline topic branch
Certain function must never be automatically inlined by gcc because
they are stack heavy or called recursively.  This patch flags all
such functions I have found as 'noinline' to prevent gcc from making
the optimization.
2010-06-16 14:34:41 -07:00
Brian Behlendorf d297febad2 Remove fix-stack dependency from fix-branch 2010-06-16 14:30:40 -07:00
Brian Behlendorf ede85e5c3c Merge commit 'refs/top-bases/linux-user-util' into linux-user-util 2010-06-16 14:29:24 -07:00
Brian Behlendorf 48ca6d3590 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-06-16 14:27:31 -07:00
Brian Behlendorf 7f979b27f4 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-06-16 14:27:30 -07:00
Brian Behlendorf 30c03a0914 Merge branch 'fix-stack' into refs/top-bases/fix-branch 2010-06-16 14:27:29 -07:00
Brian Behlendorf 1388d58932 Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-16 14:27:29 -07:00
Brian Behlendorf 2115c30515 Revert fix-stack topic branch
This patch will be broken in to several independent stack reductions
and reapplied as new topic branches.
2010-06-16 14:23:31 -07:00
Brian Behlendorf ab9a39971a Merge commit 'refs/top-bases/linux-user-util' into linux-user-util 2010-06-16 13:54:56 -07:00
Brian Behlendorf aacc00b961 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-06-16 13:53:08 -07:00
Brian Behlendorf 6a19e49908 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-06-16 13:53:07 -07:00
Brian Behlendorf 4c62777dcc Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-16 13:49:56 -07:00
Brian Behlendorf 256505afb0 Merge branch 'fix-stack-dsl_deleg_get' into refs/top-bases/fix-branch 2010-06-16 13:49:55 -07:00
Brian Behlendorf 2709f5731b New TopGit dependency: fix-stack-dsl_deleg_get 2010-06-16 13:49:53 -07:00
Brian Behlendorf 869764f64d Add fix-stack-dsl_deleg_get topic branch
Reduce stack usage in dsl_deleg_get, gcc flagged it as consuming a
whopping 1040 bytes or potentially 1/4 of a 4K stack.  This patch
moves all the large structures and buffer off the stack and on to
the heap.  This includes 2 zap_cursor_t structs each 52 bytes in
size, 2 zap_attribute_t structs each 280 bytes in size, and 1
256 byte char array.  The total saves on the stack is 880 bytes
after you account for the 5 new pointers added.

Also the source buffer length has been increased from MAXNAMELEN
to MAXNAMELEN+strlen(MOS_DIR_NAME)+1 as described by the comment in
dsl_dir_name().  A buffer overrun may have been possible with the
slightly smaller buffer.
2010-06-16 13:49:25 -07:00
Brian Behlendorf 7e01470495 Merge commit 'refs/top-bases/linux-user-util' into linux-user-util 2010-06-16 12:46:27 -07:00
Brian Behlendorf 4738ecfcdc Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-06-16 12:44:09 -07:00
Brian Behlendorf 1ccdbb250b Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-06-16 12:44:08 -07:00
Brian Behlendorf 912d828f0a Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-16 12:40:40 -07:00
Brian Behlendorf 31cc6992c5 Merge branch 'fix-stack-dsl_dir_open_spa' into refs/top-bases/fix-branch 2010-06-16 12:40:39 -07:00
Brian Behlendorf a2cbedd9e8 New TopGit dependency: fix-stack-dsl_dir_open_spa 2010-06-16 12:40:37 -07:00
Brian Behlendorf 0c524122bd Add fix-stack-dsl_dir_open_spa topic branch
Reduce stack usage by 256 bytes by moving buf char array from
the stack to the heap.
2010-06-16 12:39:44 -07:00
Brian Behlendorf b0d8f99a8f Merge commit 'refs/top-bases/linux-user-util' into linux-user-util 2010-06-16 12:19:31 -07:00
Brian Behlendorf 9fd12ce4fd Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-06-16 12:11:21 -07:00
Brian Behlendorf 2b71569742 Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-06-16 12:11:20 -07:00
Brian Behlendorf f00293115a Merge commit 'refs/top-bases/gcc-branch' into gcc-branch 2010-06-16 12:11:19 -07:00
Brian Behlendorf 877a37d8bd Merge branch 'gcc-uninit' into refs/top-bases/gcc-branch 2010-06-16 12:11:18 -07:00
Brian Behlendorf 8a001d8f59 Extra uninit vars flagged by gcc 4.1.2
Newer versions of the compiler are OK with this but for the sake of
older compilers explicitly initialize them.
2010-06-16 11:45:07 -07:00
Brian Behlendorf 70bc736b0c Merge commit 'refs/top-bases/linux-user-util' into linux-user-util 2010-06-14 17:00:51 -07:00
Brian Behlendorf b41c7ff877 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-06-14 16:45:47 -07:00
Brian Behlendorf 7f181ac166 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-06-14 16:45:46 -07:00
Brian Behlendorf 2f30cc0188 Merge branch 'fix-stack-lzjb' into refs/top-bases/fix-branch 2010-06-14 16:45:33 -07:00
Brian Behlendorf 1121733c6a Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-14 16:45:33 -07:00
Brian Behlendorf 4327d5dce3 New TopGit dependency: fix-stack-lzjb 2010-06-14 16:45:31 -07:00
Brian Behlendorf b8cc785fb6 Add fix-stack-lzjb topic branch
Reduce kernel stack usage by lzjb_compress() by moving uint16 array
off the stack and on to the heap.  The exact performance implications
of this I have not measured but we absolutely need to keep stack
usage to a minimum.  If/when this becomes and issue we optimize.
2010-06-14 16:45:01 -07:00
Brian Behlendorf 2392c05ea7 Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-14 16:43:33 -07:00
Brian Behlendorf 51322821f3 Merge branch 'fix-kstat-xuio' into refs/top-bases/fix-branch 2010-06-14 16:43:32 -07:00
Brian Behlendorf f70976285e New TopGit dependency: fix-kstat-xuio 2010-06-14 16:43:30 -07:00
Brian Behlendorf f61a7ce9e1 Add fix-kstat-xuio topic branch
Move xiou stat structures from a header to the dmu.c source as is
done with all the other kstat interfaces.  This information is local
to dmu.c registered the xuio kstat and should stay that way.
2010-06-14 16:43:01 -07:00
Brian Behlendorf 963518b20f Merge branch 'fix-metaslab' into refs/top-bases/fix-branch 2010-06-14 16:40:45 -07:00
Brian Behlendorf 105afa78b4 Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-14 16:40:45 -07:00
Brian Behlendorf 9519cc9a54 New TopGit dependency: fix-metaslab 2010-06-14 16:40:43 -07:00
Brian Behlendorf f3a61f709d Add fix-metaslab topic branch
If your only going to allow one allocator to be used and it is defined
at compile time there is no point including the others in the build.
This patch could/should be refined for Linux to make the metaslab
configurable at run time.  That might be a bit tricky however since
you would need to quiese all IO.  Short of that making it configurable
as a module load option would be a reasonable compromise.
2010-06-14 16:40:26 -07:00
Brian Behlendorf f3f44cbd31 Merge branch 'fix-current' into refs/top-bases/fix-branch 2010-06-14 16:39:27 -07:00
Brian Behlendorf 5b9ebcb897 Merge commit 'refs/top-bases/fix-branch' into fix-branch 2010-06-14 16:39:27 -07:00
Brian Behlendorf 7a73e51832 New TopGit dependency: fix-current 2010-06-14 16:39:25 -07:00