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308948 Commits (401dea7f7ade662b77c33ce2498fb5b4f97cb29c)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Mel Gorman
|
c53919adc0 |
mm: vmscan: remove lumpy reclaim
This series removes lumpy reclaim and some stalling logic that was
unintentionally being used by memory compaction. The end result is that
stalling on dirty pages during page reclaim now depends on
wait_iff_congested().
Four kernels were compared
3.3.0 vanilla
3.4.0-rc2 vanilla
3.4.0-rc2 lumpyremove-v2 is patch one from this series
3.4.0-rc2 nosync-v2r3 is the full series
Removing lumpy reclaim saves almost 900 bytes of text whereas the full
series removes 1200 bytes.
text data bss dec hex filename
|
13 years ago |
|
Rik van Riel
|
e709ffd616 |
mm: remove swap token code
The swap token code no longer fits in with the current VM model. It does not play well with cgroups or the better NUMA placement code in development, since we have only one swap token globally. It also has the potential to mess with scalability of the system, by increasing the number of non-reclaimable pages on the active and inactive anon LRU lists. Last but not least, the swap token code has been broken for a year without complaints, as reported by Konstantin Khlebnikov. This suggests we no longer have much use for it. The days of sub-1G memory systems with heavy use of swap are over. If we ever need thrashing reducing code in the future, we will have to implement something that does scale. Signed-off-by: Rik van Riel <riel@redhat.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Hugh Dickins <hughd@google.com> Acked-by: Bob Picco <bpicco@meloft.net> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
David Rientjes
|
edad9d2c33 |
mm, thp: allow fallback when pte_alloc_one() fails for huge pmd
The transparent hugepages feature is careful to not invoke the oom killer when a hugepage cannot be allocated. pte_alloc_one() failing in __do_huge_pmd_anonymous_page(), however, currently results in VM_FAULT_OOM which invokes the pagefault oom killer to kill a memory-hogging task. This is unnecessary since it's possible to drop the reference to the hugepage and fallback to allocating a small page. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
David Rientjes
|
aa2e878efa |
mm, thp: remove unnecessary ret variable
The "ret" variable is unnecessary in __do_huge_pmd_anonymous_page(), so remove it. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Wang Sheng-Hui
|
f2135a4a57 |
mm/hugetlb.c: use long vars instead of int in region_count()
The arguments f & t and fields from & to of struct file_region are defined as long. So use long instead of int to type the temp vars. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Hillf Danton <dhillf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Wang Sheng-Hui
|
89c522c78a |
mm/mempolicy.c: use enum value MPOL_REBIND_ONCE in mpol_rebind_policy()
We have enum definition in mempolicy.h: MPOL_REBIND_ONCE. It should replace the magic number 0 for step comparison in function mpol_rebind_policy. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Borislav Petkov
|
71dd0b8ae8 |
mm/memory_failure: let the compiler add the function name
These things tend to get out of sync with time so let the compiler automatically enter the current function name using __func__. No functional change. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: Andi Kleen <andi@firstfloor.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Sasha Levin
|
08fa29d916 |
mm: fix NULL ptr deref when walking hugepages
A missing validation of the value returned by find_vma() could cause a
NULL ptr dereference when walking the pagetable.
This is triggerable from usermode by a simple user by trying to read a
page info out of /proc/pid/pagemap which doesn't exist.
Introduced by commit
|
13 years ago |
|
Cong Wang
|
4c9c6a1bc8 |
cris: select GENERIC_ATOMIC64
Cris doesn't implement atomic64 operations neither, should select GENERIC_ATOMIC64. Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Paul Gortmaker
|
af2e840971 |
pagemap.h: fix warning about possibly used before init var
Commit
|
13 years ago |
|
Linus Torvalds
|
4b78147468 |
MFD changes for 3.5
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Merge tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Pull MFD changes from Samuel Ortiz:
"Besides the usual cleanups, this one brings:
* Support for 5 new chipsets: Intel's ICH LPC and SCH Centerton,
ST-E's STAX211, Samsung's MAX77693 and TI's LM3533.
* Device tree support for the twl6040, tps65910, da9502 and ab8500
drivers.
* Fairly big tps56910, ab8500 and db8500 updates.
* i2c support for mc13xxx.
* Our regular update for the wm8xxx driver from Mark."
Fix up various conflicts with other trees, largely due to ab5500 removal
etc.
* tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (106 commits)
mfd: Fix build break of max77693 by adding REGMAP_I2C option
mfd: Fix twl6040 build failure
mfd: Fix max77693 build failure
mfd: ab8500-core should depend on MFD_DB8500_PRCMU
gpio: tps65910: dt: process gpio specific device node info
mfd: Remove the parsing of dt info for tps65910 gpio
mfd: Save device node parsed platform data for tps65910 sub devices
mfd: Add r_select to lm3533 platform data
gpio: Add Intel Centerton support to gpio-sch
mfd: Emulate active low IRQs as well as active high IRQs for wm831x
mfd: Mark two lm3533 zone registers as volatile
mfd: Fix return type of lm533 attribute is_visible
mfd: Enable Device Tree support in the ab8500-pwm driver
mfd: Enable Device Tree support in the ab8500-sysctrl driver
mfd: Add support for Device Tree to twl6040
mfd: Register the twl6040 child for the ASoC codec unconditionally
mfd: Allocate twl6040 IRQ numbers dynamically
mfd: twl6040 code cleanup in interrupt initialization part
mfd: Enable ab8500-gpadc driver for Device Tree
mfd: Prevent unassigned pointer from being used in ab8500-gpadc driver
...
|
13 years ago |
|
Linus Torvalds
|
53f2c4a8fd |
NFS client updates for Linux 3.5
New features include:
- Rewrite the O_DIRECT code so that it can share the same coalescing and
pNFS functionality as the page cache code.
- Allow the server to provide hints as to when we should use pNFS, and
when it is more efficient to read and write through the metadata
server.
- NFS cache consistency updates:
- Use the ctime to emulate a change attribute for NFSv2/v3 so that
all NFS versions can share the same cache management code.
- New cache management code will only look at the change attribute
and size attribute when deciding whether or not our cached data
is still valid or not.
- Don't request NFSv4 post-op attributes on writes in cases such as
O_DIRECT, where we don't care about data cache consistency, or
when we have a write delegation, and know that our cache is
still consistent.
- Don't request NFSv4 post-op attributes on operations such as
COMMIT, where there are no expected metadata updates.
- Don't request NFSv4 directory post-op attributes in cases where
the operations themselves already return change attribute updates:
i.e. operations such as OPEN, CREATE, REMOVE, LINK and RENAME.
- Speed up 'ls' and friends by using READDIR rather than READDIRPLUS
if we detect no attempts to lookup filenames.
- Improve the code sharing between NFSv2/v3 and v4 mounts
- NFSv4.1 state management efficiency improvements
- More patches in preparation for NFSv4/v4.1 migration functionality.
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Merge tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"New features include:
- Rewrite the O_DIRECT code so that it can share the same coalescing
and pNFS functionality as the page cache code.
- Allow the server to provide hints as to when we should use pNFS,
and when it is more efficient to read and write through the
metadata server.
- NFS cache consistency updates:
* Use the ctime to emulate a change attribute for NFSv2/v3 so that
all NFS versions can share the same cache management code.
* New cache management code will only look at the change attribute
and size attribute when deciding whether or not our cached data
is still valid or not.
* Don't request NFSv4 post-op attributes on writes in cases such as
O_DIRECT, where we don't care about data cache consistency, or
when we have a write delegation, and know that our cache is still
consistent.
* Don't request NFSv4 post-op attributes on operations such as
COMMIT, where there are no expected metadata updates.
* Don't request NFSv4 directory post-op attributes in cases where
the operations themselves already return change attribute
updates: i.e. operations such as OPEN, CREATE, REMOVE, LINK and
RENAME.
- Speed up 'ls' and friends by using READDIR rather than READDIRPLUS
if we detect no attempts to lookup filenames.
- Improve the code sharing between NFSv2/v3 and v4 mounts
- NFSv4.1 state management efficiency improvements
- More patches in preparation for NFSv4/v4.1 migration functionality."
Fix trivial conflict in fs/nfs/nfs4proc.c that was due to the dcache
qstr name initialization changes (that made the length/hash a 64-bit
union)
* tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (146 commits)
NFSv4: Add debugging printks to state manager
NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
NFSv4: update_changeattr does not need to set NFS_INO_REVAL_PAGECACHE
NFSv4.1: nfs4_reset_session should use nfs4_handle_reclaim_lease_error
NFSv4.1: Handle other occurrences of NFS4ERR_CONN_NOT_BOUND_TO_SESSION
NFSv4.1: Handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION in the state manager
NFSv4.1: Handle errors in nfs4_bind_conn_to_session
NFSv4.1: nfs4_bind_conn_to_session should drain the session
NFSv4.1: Don't clobber the seqid if exchange_id returns a confirmed clientid
NFSv4.1: Add DESTROY_CLIENTID
NFSv4.1: Ensure we use the correct credentials for bind_conn_to_session
NFSv4.1: Ensure we use the correct credentials for session create/destroy
NFSv4.1: Move NFSPROC4_CLNT_BIND_CONN_TO_SESSION to the end of the operations
NFSv4.1: Handle NFS4ERR_SEQ_MISORDERED when confirming the lease
NFSv4: When purging the lease, we must clear NFS4CLNT_LEASE_CONFIRM
NFSv4: Clean up the error handling for nfs4_reclaim_lease
NFSv4.1: Exchange ID must use GFP_NOFS allocation mode
nfs41: Use BIND_CONN_TO_SESSION for CB_PATH_DOWN*
nfs4.1: add BIND_CONN_TO_SESSION operation
NFSv4.1 test the mdsthreshold hint parameters
...
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13 years ago |
|
Alan Cox
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8f6576ad47 |
tty: fix ldisc lock inversion trace
This is caused by tty_release using tty_lock_pair to lock both sides of the pty/tty pair, and then tty_ldisc_release dropping and relocking one side only. We can drop both fine, so drop both to avoid any lock ordering concerns. Rework the release path to fix the new locking model. Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Alan Cox
|
d3ca8b64b9 |
pty: Fix lock inversion
The ptmx_open path takes the tty and devpts locks in the wrong order because tty_init_dev locks and returns a locked tty. As far as I can tell this is actually safe anyway because the tty being returned is new so nobody can get a reference to lock it at this point. However we don't even need the devpts lock at this point, it's only held as a byproduct of the way the locks were pushe down. Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Trond Myklebust
|
cc0a984368 |
NFSv4: Add debugging printks to state manager
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
fb13bfa7e1 |
NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
If a file OPEN is denied due to a share lock, the resulting NFS4ERR_SHARE_DENIED is currently mapped to the default EIO. This patch adds a more appropriate mapping, and brings Linux into line with what Solaris 10 does. See https://bugzilla.kernel.org/show_bug.cgi?id=43286 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org |
13 years ago |
|
Linus Torvalds
|
a01ee165a1 |
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
Pull exofs updates from Boaz Harrosh: "Just a couple of patches. The first is a BUG fix destined for stable which missed the 3.4-rc7 Kernel. The second is just a fixture addition so exofs is able to be better exported as a cluster file system via pNFS." * 'for-linus' of git://git.open-osd.org/linux-open-osd: exofs: Add SYSFS info for autologin/pNFS export exofs: Fix CRASH on very early IO errors. |
13 years ago |
|
Linus Torvalds
|
d766023eea |
Merge branch 'doc' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull documentation updates from Jiri Kosina: "I am currently relaying documentation patches through 'doc' branch of trivial tree, until Rob, the new documentation maintainer, has established a proper tree." * 'doc' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: doc: ext3: update documentation with barrier=1 default Documentation/initrd.txt: Change the location of util-linux Documentation/SubmittingPatches: suggested the use of scripts/get_maintainer.pl Documentation/kernel-parameters: remove autotest and mcatest |
13 years ago |
|
Linus Torvalds
|
905cec410a |
Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild changes from Michal Marek: "The non-critical part of kbuild for 3.5 includes - two new coccinelle checks - fix for make deb-pkg to include generated headers in arch/*/include I have more make-deb-pkg fixes in the backlog, but these will likely have to wait for 3.6." * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: builddeb: include autogenerated header files scripts/coccinelle: sizeof of pointer scripts/coccinelle: address test is always true |
13 years ago |
|
Linus Torvalds
|
da85d3426f |
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig changes from Michal Marek:
- Error handling for make KCONFIG_ALLCONFIG=<...> all*config plus a fix
for a bug that was exposed by this
- Fix for the script/config utility.
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
scripts/config: properly report and set string options
kbuild: all{no,yes,mod,def,rand}config only read files when instructed to.
kconfig: Add error handling to KCONFIG_ALLCONFIG
|
13 years ago |
|
Linus Torvalds
|
1347a2cebc |
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek.
Fixed up nontrivial merge conflict in Makefile as per Stephen Rothwell
and linux-next (and trivial arch/sparc/Makefile changes due to removed
sparc32 logic).
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
mips: Fix KBUILD_CPPFLAGS definition
kbuild: fix ia64 link
kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux
kbuild: link of vmlinux moved to a script
kbuild: refactor final link of sparc32
kbuild: drop unused KBUILD_VMLINUX_OBJS from top-level Makefile
kbuild: Makefile: remove unnecessary check for m68knommu ARCH
|
13 years ago |
|
Linus Torvalds
|
90324cc1b1 |
avoid iput() from flusher thread
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13 years ago |
|
Linus Torvalds
|
fb8b00675e |
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze changes from Michal Simek. * 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Setup correct pointer to TLS area microblaze: Add TLS support to sys_clone microblaze: ftrace: Pass the first calling instruction for dynamic ftrace microblaze: Port OOM changes to do_page_fault microblaze: Do not select GENERIC_GPIO by default |
13 years ago |
|
Trond Myklebust
|
359d7d1c97 |
NFSv4: update_changeattr does not need to set NFS_INO_REVAL_PAGECACHE
We're already invalidating the data cache, and setting the new change attribute. Since directories don't care about the i_size field, there is no need to be forcing any extra revalidation of the page cache. We do keep the NFS_INO_INVALID_ATTR flag, in order to force an attribute cache revalidation on stat() calls since we do not update the mtime and ctime fields. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Jonas Bonn
|
b48b2c3e50 |
openrisc: use generic strnlen_user() function
The generic version is both easier to support and more correct. Signed-off-by: Jonas Bonn <jonas@southpole.se> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Paul Mackerras
|
1629372caa |
powerpc: Use the new generic strncpy_from_user() and strnlen_user()
This is much the same as for SPARC except that we can do the find_zero() function more efficiently using the count-leading-zeroes instructions. Tested on 32-bit and 64-bit PowerPC. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Paul Mackerras
|
69ea640598 |
lib: Fix generic strnlen_user for 32-bit big-endian machines
The aligned_byte_mask() definition is wrong for 32-bit big-endian machines: the "7-(n)" part of the definition assumes a long is 8 bytes. This fixes it by using BITS_PER_LONG - 8 instead of 8*7. Tested on 32-bit and 64-bit PowerPC. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Trond Myklebust
|
f2c1b5100d |
NFSv4.1: nfs4_reset_session should use nfs4_handle_reclaim_lease_error
The results from a call to nfs4_proc_create_session() should always be fed into nfs4_handle_reclaim_lease_error, so that we can handle errors such as NFS4ERR_SEQ_MISORDERED correctly. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
9f594791dd |
NFSv4.1: Handle other occurrences of NFS4ERR_CONN_NOT_BOUND_TO_SESSION
Let nfs4_schedule_session_recovery() handle the details of choosing between resetting the session, and other session related recovery. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
7c5d725684 |
NFSv4.1: Handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION in the state manager
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
bf674c8228 |
NFSv4.1: Handle errors in nfs4_bind_conn_to_session
Ensure that we handle NFS4ERR_DELAY errors separately, and then let nfs4_recovery_handle_error() handle all other cases. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
43ac544cb3 |
NFSv4.1: nfs4_bind_conn_to_session should drain the session
In order to avoid races with other RPC calls that end up setting the NFS4CLNT_BIND_CONN_TO_SESSION flag. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Linus Torvalds
|
1e2aec873a |
Merge branch 'generic-string-functions'
This makes <asm/word-at-a-time.h> actually live up to its promise of allowing architectures to help tune the string functions that do their work a word at a time. David had already taken the x86 strncpy_from_user() function, modified it to work on sparc, and then done the extra work to make it generically useful. This then expands on that work by making x86 use that generic version, completing the circle. But more importantly, it fixes up the word-at-a-time interfaces so that it's now easy to also support things like strnlen_user(), and pretty much most random string functions. David reports that it all works fine on sparc, and Jonas Bonn reported that an earlier version of this worked on OpenRISC too. It's pretty easy for architectures to add support for this and just replace their private versions with the generic code. * generic-string-functions: sparc: use the new generic strnlen_user() function x86: use the new generic strnlen_user() function lib: add generic strnlen_user() function word-at-a-time: make the interfaces truly generic x86: use generic strncpy_from_user routine |
13 years ago |
|
Lekensteyn
|
19a4b98895 |
builddeb: include autogenerated header files
After
|
13 years ago |
|
Linus Torvalds
|
ae32adc1e0 |
Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux
Pull i2c-embedded changes from Wolfram Sang:
"Major changes:
- lots of devicetree additions for existing drivers. I tried hard to
make sure the bindings are proper. In more complicated cases, I
requested acks from people having more experience with them than
me. That took a bit of extra time and also some time went into
discussions with developers about what bindings are and what not.
I have the feeling that the workflow with bindings should be
improved to scale better. I will spend some more thought on
this...
- i2c-muxes are succesfully used meanwhile, so we dropped
EXPERIMENTAL for them and renamed the drivers to a standard pattern
to match the rest of the subsystem. They can also be used with
devicetree now.
- ixp2000 was removed since the whole platform goes away.
- cleanups (strlcpy instead of strcpy, NULL instead of 0)
- The rest is typical driver fixes I assume.
All patches have been in linux-next at least since v3.4-rc6."
Fixed up trivial conflict in arch/arm/mach-lpc32xx/common.c due to the
same patch already having come in through the arm/soc trees, with
additional patches on top of it.
* 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux: (35 commits)
i2c: davinci: Free requested IRQ in remove
i2c: ocores: register OF i2c devices
i2c: tegra: notify transfer-complete after clearing status.
I2C: xiic: Add OF binding support
i2c: Rename last mux driver to standard pattern
i2c: tegra: fix 10bit address configuration
i2c: muxes: rename first set of drivers to a standard pattern
of/i2c: implement of_find_i2c_adapter_by_node
i2c: implement i2c_verify_adapter
i2c-s3c2410: Add HDMIPHY quirk for S3C2440
i2c-s3c2410: Rework device type handling
i2c: muxes are not EXPERIMENTAL anymore
i2c/of: Automatically populate i2c mux busses from device tree data.
i2c: Add a struct device * parameter to i2c_add_mux_adapter()
of/i2c: call i2c_verify_client from of_find_i2c_device_by_node
i2c: designware: Add clk_{un}prepare() support
i2c: designware: add PM support
i2c: ixp2000: remove driver
i2c: pnx: add device tree support
i2c: imx: don't use strcpy but strlcpy
...
|
13 years ago |
|
Linus Torvalds
|
f465d145d7 |
arm-soc: sweeping late_initcall cleanup
This is a patch series from Shawn Guo that moves from individual
late_initcalls() to using a member in the machine structure to invoke
a platform's late initcalls.
This cleanup is a step in the move towards multiplatform kernels since
it would reduce the need to check for compatible platforms in each and
every initcall.
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Merge tag 'cleanup-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull sweeping late_initcall cleanup for arm-soc from Olof Johansson:
"This is a patch series from Shawn Guo that moves from individual
late_initcalls() to using a member in the machine structure to invoke
a platform's late initcalls.
This cleanup is a step in the move towards multiplatform kernels since
it would reduce the need to check for compatible platforms in each and
every initcall."
Fix up trivial conflicts in arch/arm/mach-{exynos/mach-universal_c210.c,
imx/mach-cpuimx51.c, omap2/board-generic.c} due to changes nearby (and,
in the case of cpuimx51.c the board support being deleted)
* tag 'cleanup-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: ux500: use machine specific hook for late init
ARM: tegra: use machine specific hook for late init
ARM: shmobile: use machine specific hook for late init
ARM: sa1100: use machine specific hook for late init
ARM: s3c64xx: use machine specific hook for late init
ARM: prima2: use machine specific hook for late init
ARM: pnx4008: use machine specific hook for late init
ARM: omap2: use machine specific hook for late init
ARM: omap1: use machine specific hook for late init
ARM: msm: use machine specific hook for late init
ARM: imx: use machine specific hook for late init
ARM: exynos: use machine specific hook for late init
ARM: ep93xx: use machine specific hook for late init
ARM: davinci: use machine specific hook for late init
ARM: provide a late_initcall hook for platform initialization
|
13 years ago |
|
Linus Torvalds
|
30b842889e |
arm-soc: soc specific changes, part 2
This adds support for the spear13xx platform, which has first been under review a long time ago and finally been completed after generic spear work has gone into the clock, dt and pinctrl branches. Also a number of updates for the samsung socs are part of this branch. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPuezDAAoJEIwa5zzehBx3mooP/iTHd1wRjr2MzKNx4+LpLWgl aAXH002xe9Lvu7m75BRvEYWWdRLkyEy9ARM4s2wJCnxU41KmbF65ED1erxK8xaSe Ako34vzH+HiUCM2DLzIP6FXyJMM7OcfrdGaY/GxOv+U+MzGUHeu3Q+8b0B/yfBnm M3HdDrpyZHKZP9UM3wVQ4/ilDck6vEjYSV2jC11IaHiDMRD2nSpfRKh8H3+gv65S gtj9EZpWM8CZg/fCe5lsm3PZnBnqHHW3WVafVnDQfGWeJYqZxMB5QKLU6qf/ntpx LU2WjXoGaMmGBVZWynrwNEY6GVp3fZrDV30/q8Htf0/fBpEjUncrLHXtw0DxkpnK UuyoRgn7zxOc3kDzohFNIexp1K3q+PNzXklR9hg7OSVji+9bPd2LIOEnpBeghBGj WzZIebz5dIdddHlnOl4fRdmxZva2UTuI4bFAJ0izi10Mup7A9lrENnFHG/iVA0rQ QlqJZoyeDCvbXQqZCgHirYRPhIxXdQj4G5IivfRxQ7Jgjy76Kt9uDp1egwezF/3a 2jVtcK42XokVv3Dhsvq9UNFn9GWdVImZ7eh70XLv+q834zAVxSzjWLtlS8I1Q5WO 7BGIJaICtugNwgYr44Dif6nsoVUmMnSwU5hVw1pApKZspN6EhMhMdp2hw8JPHFUs mrZdHi1NAWuYSbObc3UB =W2Ri -----END PGP SIGNATURE----- Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc: soc specific changes (part 2) from Olof Johansson: "This adds support for the spear13xx platform, which has first been under review a long time ago and finally been completed after generic spear work has gone into the clock, dt and pinctrl branches. Also a number of updates for the samsung socs are part of this branch." Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much worse than they are: the exonys5 init code was refactored in commit |
13 years ago |
|
Linus Torvalds
|
84a442b9a1 |
arm-soc: device tree conversions, part 2
These continue the device tree work from part 1, this set is for the
tegra, mxs and imx platforms, all of which have dependencies on clock
or pinctrl changes submitted earlier.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc device tree conversions (part 2) from Olof Johansson:
"These continue the device tree work from part 1, this set is for the
tegra, mxs and imx platforms, all of which have dependencies on clock
or pinctrl changes submitted earlier."
Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
ARM: dt: tegra: invert status=disable vs status=okay
ARM: dt: tegra: consistent basic property ordering
ARM: dt: tegra: sort nodes based on bus order
ARM: dt: tegra: remove duplicate device_type property
ARM: dt: tegra: consistenly use lower-case for hex constants
ARM: dt: tegra: format regs properties consistently
ARM: dt: tegra: gpio comment cleanup
ARM: dt: tegra: remove unnecessary unit addresses
ARM: dt: tegra: whitespace cleanup
ARM: dt: tegra cardhu: fix typo in SDHCI node name
ARM: dt: tegra: cardhu: register core regulator tps62361
ARM: dt: tegra30.dtsi: Add SMMU node
ARM: dt: tegra20.dtsi: Add GART node
ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
ARM: dt: tegra: Add device tree support for AHB
ARM: dts: enable audio support for imx28-evk
ARM: dts: enable i2c device for imx28-evk
i2c: mxs: add device tree probe support
ARM: dts: enable mmc for imx28-evk
...
|
13 years ago |
|
Linus Torvalds
|
39b6cc668c |
arm-soc: add stmp-dev library code
A number of devices are using a common register layout, this adds support code for it in lib/stmp_device.c so we do not need to duplicate it in each driver. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPuexlAAoJEIwa5zzehBx31P0P/jK7GC5Ln2gr/bV+4Kt9fStS VcGI/ARsyQtwaNTJQfPkg8Weg3DhbPRlUWeimVKMFo3uEle3VjnPBjdcMPUKtW3x SPka/W591LGEdKQRmXZrISm2OiQXVvM2zkhSJV89n/tJBdHd+tDWDDq4Y784F8Cj hWmcIi66G4RBPj5pplf80UhNAEg5HoZHQnlgrS1iLMpBTwXAesv7zyZpvnsMzdpg qSJTfcifgLULtM0WFbooNGojBn8ftuA67psrw78vgV2bz7bVBioZHYFyqPWK9Gr0 vtiKuyXqiDA65mueXA+E5RXXLCLQSyGdV8y0xiSYjilRVkziPcMKnQT07keb8SJN CCDpetjEULiQpgKvVWc7sDGlb5ePd/C5rs31S0fFOKjeRJNlfG5+OuqZPiobO7hk F2Fx3gq4LPLel7gwjK3T4XTmmL9kNt/y1sIfXx5WybJL8N5n6TdZIfWm6yOZYwfX jvG/CnvVvhgdWk/ebaTEOG1MaeNAY3uwGpSBuEEoXUDHatQdOYAsgLfJJv/H4zKp 2AY9qvXTDtFYys/hs2WhwmS7s1WFlIrA+voEPBDa3WT2qGup8HAL/C9kL3ms2zqk 8JL/yQ/IJpTHPb4bCGo9C08qdi1YtMbylHB0/ELvG1BNoHOnCDV3wZlVG3ZTQQb5 c/Lb2H8crk5HVbpCPLQU =VHLM -----END PGP SIGNATURE----- Merge tag 'stmp-dev' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc stmp-dev library code from Olof Johansson: "A number of devices are using a common register layout, this adds support code for it in lib/stmp_device.c so we do not need to duplicate it in each driver." Fix up trivial conflicts in drivers/i2c/busses/i2c-mxs.c and lib/Makefile * tag 'stmp-dev' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: i2c: mxs: use global reset function lib: add support for stmp-style devices |
13 years ago |
|
Linus Torvalds
|
2795343705 |
arm-soc: clock driver changes
The new clock subsystem was merged in linux-3.4 without any users, this now moves the first three platforms over to it: imx, mxs and spear. The series also contains the changes for the clock subsystem itself, since Mike preferred to have it together with the platforms that require these changes, in order to avoid interdependencies and conflicts. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPuexPAAoJEIwa5zzehBx3YBsP/0nFhXjb5t1PdLfFzGKtcZVB j4zXWXMHQ1fA7wIfEpZF3Nnco6MQkufF5wJPoPdn1+wmkzCn3D6IwNVWVtW4U5i9 VGyShSbgusAAYXUe/9yYj8eN+bbRQSvdN4eWYWU6+rRXShGZ5dZZmp+IPNl54dnW 6F8uCnHX0cnIMCpGqV+41zZgZ/4wL2k9gdqu0LO6pi07o4tGd0Z4gcySgUFAnn1R kofNHueYIP4UgOg8DREoBzVKlpRqMou3S2kSZUfMeb3Q9ryF7UIvaGqIILyi7PKL kWd3nptg0EPavfL21SwXHiGpnDpB/Gj/F70kcPLus5RYujB24C9bvBmc26z68NZx Sz9mbElkkIU5duZsl1nxBWJ8IZ/tSWdtmC2xQMznmV7gHyGgVwr4j47f4Uv5sBvM 14JHDO7mqN6E6FnTFZu/oPAN5pDjgL+TVNK5BU6Wkq0zitrA6eyKDqCvBCqkO6Nn tNzOuyRDzMOwM7HzqXhxqtzJWXylO1Mldc4bM8X4Cocf4pnLna/X6uP6dgE6A+JY azVYx4I/0NdEPerDTzIcEhBDgZeBVROhUQr+kHxc4rf6WzUUbu/wEo1UKXWV66oW 1jb1yAFFWqYjkQuQc2PD4JSx35sFJaoSaoneRtmzBzRDfzSr5KjKj1E0e1skyMFq 7ZVLCqZD0cB9DhmMDkWP =rwFF -----END PGP SIGNATURE----- Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc clock driver changes from Olof Johansson: "The new clock subsystem was merged in linux-3.4 without any users, this now moves the first three platforms over to it: imx, mxs and spear. The series also contains the changes for the clock subsystem itself, since Mike preferred to have it together with the platforms that require these changes, in order to avoid interdependencies and conflicts." Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code removed in one branch, added OF support in another) and drivers/dma/imx-sdma.c (independent changes next to each other). * tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits) clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate(). clk: Provide dummy clk_unregister() SPEAr: Update defconfigs SPEAr: Add SMI NOR partition info in dts files SPEAr: Switch to common clock framework SPEAr: Call clk_prepare() before calling clk_enable SPEAr: clk: Add General Purpose Timer Synthesizer clock SPEAr: clk: Add Fractional Synthesizer clock SPEAr: clk: Add Auxiliary Synthesizer clock SPEAr: clk: Add VCO-PLL Synthesizer clock SPEAr: Add DT bindings for SPEAr's timer ARM i.MX: remove now unused clock files ARM: i.MX6: implement clocks using common clock framework ARM i.MX35: implement clocks using common clock framework ARM i.MX5: implement clocks using common clock framework ARM: Kirkwood: Replace clock gating ARM: Orion: Audio: Add clk/clkdev support ARM: Orion: PCIE: Add support for clk ARM: Orion: XOR: Add support for clk ARM: Orion: CESA: Add support for clk ... |
13 years ago |
|
Linus Torvalds
|
2c757fd5d1 |
arm-soc: cleanups, part 2
More cleanups, continuing an earlier set with omap and samsung specific
cleanups. These could not go into the first set because they have
dependencies on various other series that in turn depend on the first
cleanups.
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Merge tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc cleanups (part 2) from Olof Johansson:
"More cleanups, continuing an earlier set with omap and samsung
specific cleanups. These could not go into the first set because they
have dependencies on various other series that in turn depend on the
first cleanups."
Fixed up conflicts in arch/arm/plat-omap/counter_32k.c due to commit
bd0493eaaf5c: "move read_{boot,persistent}_clock to the architecture
level" that changed how the persistent clocks were handled. And trivial
conflicts in arch/arm/mach-omap1/common.h due to just independent
changes close to each other.
* tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
ARM: SAMSUNG: merge plat-s5p into plat-samsung
ARM: SAMSUNG: move options for common s5p into plat-samsung/Kconfig
ARM: SAMSUNG: move setup code for s5p mfc and mipiphy into plat-samsung
ARM: SAMSUNG: move platform device for s5p uart into plat-samsung
ARM: SAMSUNG: move hr timer for common s5p into plat-samsung
ARM: SAMSUNG: move pm part for common s5p into plat-samsung
ARM: SAMSUNG: move interrupt part for common s5p into plat-samsung
ARM: SAMSUNG: move clock part for common s5p into plat-samsung
ARM: S3C24XX: Use common macro to define resources on dev-uart.c
ARM: S3C24XX: move common clock init into common.c
ARM: S3C24XX: move common power-management code to mach-s3c24xx
ARM: S3C24XX: move plat-s3c24xx/dev-uart.c into common.c
ARM: S3C24XX: move plat-s3c24xx/cpu.c
ARM: OMAP2+: Kconfig: convert SOC_OMAPAM33XX to SOC_AM33XX
ARM: OMAP2+: Kconfig: convert SOC_OMAPTI81XX to SOC_TI81XX
GPMC: add ECC control definitions
ARM: OMAP2+: dmtimer: remove redundant sysconfig context restore
ARM: OMAP: AM35xx: convert 3517 detection/flags to AM35xx
ARM: OMAP: AM35xx: remove redunant cpu_is checks for AM3505
ARM: OMAP1: Pass dma request lines in platform data to MMC driver
...
|
13 years ago |
|
Linus Torvalds
|
ce53044c68 |
arm-soc: driver specific updates
These changes are specific to some driver that may be used by multiple boards or socs. The most significant change in here is the move of the samsung iommu code from a platform specific in-kernel interface to the generic iommu subsystem. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPuevXAAoJEIwa5zzehBx3D8YQAKfoY3TFjJ9KmJgk69/pc7cf Of0rvX+35NezGFljIyRdspz+DsV+vhJravwdVxOagRKvVBOb9qnZIXnl3gkLnTw4 dCVMFMqCwXhBeXlXCzHSeRmt2+4/fmJnr7jr4xh9omOAJ9BZv5ftmKNW4zP5wr1L +9HBwzkxlVisR4NCz2q66YBjsV2dXA3dv2hZxEFkUdQFYJGqZoUXLYHF9yno20i3 knKNXEyAFYFUKHiFVBQJ1tYGmZlaIjw14g+GTqzZay2Pi/HjUXfrPd0VwNkBzZf/ H1N3/cf4GJ2+K/zYqh+H/Xjf/Fjkp1dFNhlUQ7+l5Jwbu7C1B2euvwTO4OaqrfdD 7eqG3+uIKhPO2Z8ZySLFgx4ghybtwgZrAwOjsa+ymTugqPbiWYB/zZR1iWu5DMk/ TnNb6P3ciP+WMpoMFh1kXRc/eCCCHtuQ0rLRxizSX6HIpxWvjYFNLH7L3wS+KtlB 7vsS764d1JFW318bsdBi+V/LWRVXeSWWetTzdzDcM/Syz3ZqfPy7e3Ge6qx0lvYe 5ojgzKwVqpJenZdt91UC16cMXNqDTzmZObz6LOCmVm1mB5kYSgEHYxAQQvuGFjXT 28kGyBQNsBboJGaYh2O/CTsVXnHnaPXrtDDWMDacWNwwPYnnA2L8lUNfAg1DgA1j Z6CO8Knfct01EpQLtybK =hgkg -----END PGP SIGNATURE----- Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc driver specific updates from Olof Johansson: "These changes are specific to some driver that may be used by multiple boards or socs. The most significant change in here is the move of the samsung iommu code from a platform specific in-kernel interface to the generic iommu subsystem." Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits) mmc: dt: Consolidate DT bindings iommu/exynos: Add iommu driver for EXYNOS Platforms ARM: davinci: optimize the DMA ISR ARM: davinci: implement DEBUG_LL port choice ARM: tegra: Add SMMU enabler in AHB ARM: tegra: Add Tegra AHB driver Input: pxa27x_keypad add choice to set direct_key_mask Input: pxa27x_keypad direct key may be low active Input: pxa27x_keypad bug fix for direct_key_mask Input: pxa27x_keypad keep clock on as wakeup source ARM: dt: tegra: pinmux changes for USB ULPI ARM: tegra: add USB ULPI PHY reset GPIO to device tree ARM: tegra: don't hard-code USB ULPI PHY reset_gpio ARM: tegra: change pll_p_out4's rate to 24MHz ARM: tegra: fix pclk rate ARM: tegra: reparent sclk to pll_c_out1 ARM: tegra: Add pllc clock init table ARM: dt: tegra cardhu: basic audio support ARM: dt: tegra30.dtsi: Add audio-related nodes ARM: tegra: add AUXDATA required for audio ... |
13 years ago |
|
Linus Torvalds
|
0877aa3908 |
arm-soc: defconfig updates
For the first time, we have one branch that collects just updates to defconfig files, mostly for adapting to changes in other subsystems. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJPueuoAAoJEIwa5zzehBx3wVwP/AhoUS5UIXbx43IHYQVv1OnC 3jSj9kNrCA5Tcyq/REn9UIxoq3GIaGIYS0g6rjThB3SUA9ErxsmhHdIZ1uW+N+k9 PxaODVsKXTxtLtYDC2nWxt6JRcCoLr+mABUCfyp9V4eD3Z60Ld5Mw4pdfqCVFiA+ QV9kdqdnZXSwhJxJGE59JwqMrGEumrABbNHnm/0E90ONQfcG6zH5lBKN+kjafzn6 0MQ64Gfvr6/Jh8C4S7it5rkQ2gO3AGj7yVsoSS+6U9ZHOKzCuCVtpOfgHsAdNdJW PXLeoXmGvrKq4deiIVngsBM1uubwGAzeVI58NHZtJ0aow2GJ0NeiKwq4FCH1yULc McsGRxCjkCeEQ1nD+LedC9ReKsbb5XmvrIi9A9Bgpf395HVuQnRZux3ulIkbOGSC AIr8u5w1iRMqQxThpg4GCa3idWW5taFNzVsZQIubQroQOE4sDduuRHJ4TP6Alx9S ysK3l9tVmzQrgUExsSTPKtDffPFa3lBuhx3WwiXSLvhfzvZV4743Up/Mgf11cfLj 1+E4pEt3qWZhb0xuf+hTbIXv+tERMCs2HtD1M7w517DBi1nOEo6OlLBDprEUT1rH WhUPky8U/7iGlNSYmV9LEUnRmuwBec8+3RiL7GpWxtV+a5nvbkdTPA15ZuJh8c0R 5ohyc3iclMGQbl7T0JHf =pvPg -----END PGP SIGNATURE----- Merge tag 'defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc defconfig updates from Olof Johansson: "For the first time, we have one branch that collects just updates to defconfig files, mostly for adapting to changes in other subsystems." * tag 'defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: PRIMA2: add prima2_defconfig for CSR SiRFprimaII ARM: tegra: update defconfig ARM: tegra: update defconfig ARM: imx_v6_v7_defconfig: Add SPI NOR support ARM: imx_v4_v5_defconfig: Let CONFIG_MACH_IMX27_DT be built by default |
13 years ago |
|
David Miller
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2c66f62363 |
sparc: use the new generic strnlen_user() function
This throws away the sparc-specific functions in favor of the generic optimized version. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Linus Torvalds
|
5723aa993d |
x86: use the new generic strnlen_user() function
This throws away the old x86-specific functions in favor of the generic optimized version. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Linus Torvalds
|
a08c5356a3 |
lib: add generic strnlen_user() function
This adds a new generic optimized strnlen_user() function that uses the <asm/word-at-a-time.h> infrastructure to portably do efficient string handling. In many ways, strnlen is much simpler than strncpy, and in particular we can always pre-align the words we load from memory. That means that all the worries about alignment etc are a non-issue, so this one can easily be used on any architecture. You obviously do have to do the appropriate word-at-a-time.h macros. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Linus Torvalds
|
36126f8f2e |
word-at-a-time: make the interfaces truly generic
This changes the interfaces in <asm/word-at-a-time.h> to be a bit more complicated, but a lot more generic. In particular, it allows us to really do the operations efficiently on both little-endian and big-endian machines, pretty much regardless of machine details. For example, if you can rely on a fast population count instruction on your architecture, this will allow you to make your optimized <asm/word-at-a-time.h> file with that. NOTE! The "generic" version in include/asm-generic/word-at-a-time.h is not truly generic, it actually only works on big-endian. Why? Because on little-endian the generic algorithms are wasteful, since you can inevitably do better. The x86 implementation is an example of that. (The only truly non-generic part of the asm-generic implementation is the "find_zero()" function, and you could make a little-endian version of it. And if the Kbuild infrastructure allowed us to pick a particular header file, that would be lovely) The <asm/word-at-a-time.h> functions are as follows: - WORD_AT_A_TIME_CONSTANTS: specific constants that the algorithm uses. - has_zero(): take a word, and determine if it has a zero byte in it. It gets the word, the pointer to the constant pool, and a pointer to an intermediate "data" field it can set. This is the "quick-and-dirty" zero tester: it's what is run inside the hot loops. - "prep_zero_mask()": take the word, the data that has_zero() produced, and the constant pool, and generate an *exact* mask of which byte had the first zero. This is run directly *outside* the loop, and allows the "has_zero()" function to answer the "is there a zero byte" question without necessarily getting exactly *which* byte is the first one to contain a zero. If you do multiple byte lookups concurrently (eg "hash_name()", which looks for both NUL and '/' bytes), after you've done the prep_zero_mask() phase, the result of those can be or'ed together to get the "either or" case. - The result from "prep_zero_mask()" can then be fed into "find_zero()" (to find the byte offset of the first byte that was zero) or into "zero_bytemask()" (to find the bytemask of the bytes preceding the zero byte). The existence of zero_bytemask() is optional, and is not necessary for the normal string routines. But dentry name hashing needs it, so if you enable DENTRY_WORD_AT_A_TIME you need to expose it. This changes the generic strncpy_from_user() function and the dentry hashing functions to use these modified word-at-a-time interfaces. This gets us back to the optimized state of the x86 strncpy that we lost in the previous commit when moving over to the generic version. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |
|
Trond Myklebust
|
32b0131069 |
NFSv4.1: Don't clobber the seqid if exchange_id returns a confirmed clientid
If the EXCHGID4_FLAG_CONFIRMED_R flag is set, the client is in theory supposed to already know the correct value of the seqid, in which case RFC5661 states that it should ignore the value returned. Also ensure that if the sanity check in nfs4_check_cl_exchange_flags fails, then we must not change the nfs_client fields. Finally, clean up the code: we don't need to retest the value of 'status' unless it can change. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Trond Myklebust
|
6624553910 |
NFSv4.1: Add DESTROY_CLIENTID
Ensure that we destroy our lease on last unmount Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> |
13 years ago |
|
Linus Torvalds
|
4ae73f2d53 |
x86: use generic strncpy_from_user routine
The generic strncpy_from_user() is not really optimal, since it is designed to work on both little-endian and big-endian. And on little-endian you can simplify much of the logic to find the first zero byte, since little-endian arithmetic doesn't have to worry about the carry bit propagating into earlier bytes (only later bytes, which we don't care about). But I have patches to make the generic routines use the architecture- specific <asm/word-at-a-time.h> infrastructure, so that we can regain the little-endian optimizations. But before we do that, switch over to the generic routines to make the patches each do just one well-defined thing. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
13 years ago |