25 Sep, 2015
2 commits
-
The sign-file.c program actually uses CMS rather than PKCS#7 to sign a file
since that allows the target X.509 certificate to be specified by
subjectKeyId rather than by issuer + serialNumber.However, older versions of the OpenSSL crypto library (such as may be found
in CentOS 5.11) don't support CMS. Assume everything prior to
OpenSSL-1.0.0 doesn't support CMS and switch to using PKCS#7 in that case.Further, the pre-1.0.0 OpenSSL only supports PKCS#7 signing with SHA1, so
give an error from the sign-file script if the caller requests anything
other than SHA1.The compiler gives the following error with an OpenSSL crypto library
that's too old:HOSTCC scripts/sign-file
scripts/sign-file.c:23:25: fatal error: openssl/cms.h: No such file or directory
#includeReported-by: Vinson Lee
Signed-off-by: David Howells
Acked-by: David Woodhouse -
Remove headers #included unnecessarily from extract-cert.c lest they cause
compilation of the tool to fail against an older OpenSSL library.Signed-off-by: David Howells
Acked-by: David Woodhouse
16 Sep, 2015
1 commit
-
The GPL does not permit us to link against the OpenSSL library. Use
LGPL for sign-file and extract-file instead.[ The whole "openssl isn't compatible with gpl" is really just
fear-mongering, but there's no reason not to make modsign LGPL, so
nobody cares. - Linus ]Reported-by: Julian Andres Klode
Signed-off-by: David Woodhouse
Signed-off-by: David Howells
Reviewed-by: Julian Andres Klode
Signed-off-by: Linus Torvalds
12 Sep, 2015
1 commit
-
Fix the following warning when compiling extract-cert:
scripts/extract-cert.c: In function `write_cert':
scripts/extract-cert.c:89:2: warning: format not a string literal and no format arguments [-Wformat-security]
ERR(!i2d_X509_bio(wb, x509), cert_dst);
^whereby the ERR() macro is taking cert_dst as the format string. "%s"
should be used as the format string as the path could contain special
characters.Signed-off-by: David Howells
Reported-by: Jim Davis
Acked-by : David Woodhouse
Cc: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Sep, 2015
13 commits
-
"CONST variable" checks like:
if (NULL != foo)
and
while (0 < bar(...))where a constant (or what appears to be a constant like an upper case
identifier) is on the left of a comparison are generally preferred to be
written using the constant on the right side like:if (foo != NULL)
and
while (bar(...) > 0)Add a test for this.
Add a --fix option too, but only do it when the code is immediately
surrounded by parentheses to avoid misfixing things like "(0 < bar() +
constant)"Signed-off-by: Joe Perches
Cc: Nicolas Morey Chaisemartin
Cc: Viresh Kumar
Cc: Dan Carpenter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
commit 61031952f4c8 ("arch, x86: pmem api for ensuring durability of
persistent memory updates") added a new __pmem annotation for sparse
verification. Add __pmem to the $Sparse variable so checkpatch can
appropriately ignore uses of this attribute too.Signed-off-by: Joe Perches
Reviewed-by: Ross Zwisler
Acked-by: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using checkpatch.pl with Perl 5.22.0 generates the following warning:
Unescaped left brace in regex is deprecated, passed through in regex;
This patch fixes the warnings by escaping occurrences of the left brace
inside the regular expression.Signed-off-by: Eddie Kovsky
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fixes: and Link: lines may exceed 75 chars in the commit log.
So too can stack dump and dmesg lines and lines that seem
like filenames.And Fixes: lines don't need to have a "commit" prefix before the
commit id.Add exceptions for these types of lines.
Signed-off-by: Joe Perches
Reported-by: Paul Bolle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using 0x%d is wrong. Emit a message when it happens.
Miscellanea:
Improve the %Lu warning to match formats like %16Lu.
Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Making --strict the default for staging may help some people submit
patches without obvious defects.Signed-off-by: Joe Perches
Cc: Dan Carpenter
Cc: Greg Kroah-Hartman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some of the block comment tests that are used only for networking are
appropriate for all patches.For example, these styles are not encouraged:
/*
block comment without introductory *
*/
and
/*
* block comment with line terminating */Remove the networking specific test and add comments.
There are some infrequent false positives where code is lazily
commented out using /* and */ rather than using #if 0/#endif blocks
like:
/* case foo:
case bar: */
case baz:Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
commit 34d8815f9512 ("checkpatch: add --showfile to allow input via pipe
to show filenames") broke the --emacs with --file option.Fix it.
Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Sergey Senozhatsky has modified several destroy functions that can
now be called with NULL values.- kmem_cache_destroy()
- mempool_destroy()
- dma_pool_destroy()Update checkpatch to warn when those functions are preceded by an if.
Update checkpatch to --fix all the calls too only when the code style
form is using leading tabs.from:
if (foo)
(foo);
to:
(foo);Signed-off-by: Joe Perches
Tested-by: Sergey Senozhatsky
Cc: David Rientjes
Cc: Julia Lawall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some really long declaration macros exist.
For instance;
DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
and
DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(name, description)Increase the limit from 2 words to 6 after DECLARE/DEFINE uses.
Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Many lines exist like
if (foo)
bar;where the tabbed indentation of the branch is not one more than the "if"
line above it.checkpatch should emit a warning on those lines.
Miscellenea:
o Remove comments from branch blocks
o Skip blank lines in blockSigned-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using BUG/BUG_ON crashes the kernel and is just unfriendly.
Enable code that emits a warning on BUG/BUG_ON use.
Make the code emit the message at WARNING level when scanning a patch and
at CHECK level when scanning files so that script users don't feel an
obligation to fix code that might be above their pay grade.Signed-off-by: Joe Perches
Reported-by: Geert Uytterhoeven
Tested-by: Geert Uytterhoeven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit IDs should have commit descriptions too. Warn when a 12 to 40 byte
SHA-1 is used in commit logs.Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Sep, 2015
6 commits
-
Merge second patch-bomb from Andrew Morton:
"Almost all of the rest of MM. There was an unusually large amount of
MM material this time"* emailed patches from Andrew Morton : (141 commits)
zpool: remove no-op module init/exit
mm: zbud: constify the zbud_ops
mm: zpool: constify the zpool_ops
mm: swap: zswap: maybe_preload & refactoring
zram: unify error reporting
zsmalloc: remove null check from destroy_handle_cache()
zsmalloc: do not take class lock in zs_shrinker_count()
zsmalloc: use class->pages_per_zspage
zsmalloc: consider ZS_ALMOST_FULL as migrate source
zsmalloc: partial page ordering within a fullness_list
zsmalloc: use shrinker to trigger auto-compaction
zsmalloc: account the number of compacted pages
zsmalloc/zram: introduce zs_pool_stats api
zsmalloc: cosmetic compaction code adjustments
zsmalloc: introduce zs_can_compact() function
zsmalloc: always keep per-class stats
zsmalloc: drop unused variable `nr_to_migrate'
mm/memblock.c: fix comment in __next_mem_range()
mm/page_alloc.c: fix type information of memoryless node
memory-hotplug: fix comments in zone_spanned_pages_in_node() and zone_spanned_pages_in_node()
... -
add [pci|dma]_pool_zalloc coccinelle check.
replaces instances of [pci|dma]_pool_alloc() followed by memset(0)
with [pci|dma]_pool_zalloc().Signed-off-by: Sean O. Stalley
Acked-by: Julia Lawall
Cc: Vinod Koul
Cc: Bjorn Helgaas
Cc: Gilles Muller
Cc: Nicolas Palix
Cc: Michal Marek
Cc: Sebastian Andrzej Siewior
Cc: Jonathan Corbet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Pull misc kbuild updates from Michal Marek:
- deb-pkg:
+ module signing fix
+ dtb files are added to the package
+ do not require `hostname -f` to work during build
+ make deb-pkg generates a source package, bindeb-pkg has been
added to only generate the binary package
- rpm-pkg packages /lib/modules as well
- new coccinelle patch and updates to existing ones
- new stackusage & stackdelta script to collect and compare stack usage
info (using gcc's -fstack-usage)
- make tags understands trace_*_rcuidle() macros
- .gitignore updates, misc cleanups* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (27 commits)
deb-pkg: add source package
package/Makefile: move source tar creation to a function
scripts: add stackdelta script
kbuild: remove *.su files generated by -fstack-usage
.gitignore: add *.su pattern
scripts: add stackusage script
kbuild: avoid listing /lib/modules in kernel spec file
fallback to hostname in scripts/package/builddeb
coccinelle: api: extend spatch for dropping unnecessary owner
deb-pkg: simplify directory creation
scripts/tags.sh: Include trace_*_rcuidle() in tags
scripts/package/Makefile: rpmbuild is needed for rpm targets
Kbuild: Add ID files to .gitignore
gitignore: Add MIPS vmlinux.32 to the list
coccinelle: simple_return: Add a blank line
coccinelle: irqf_oneshot.cocci: Improve the generated commit log
coccinelle: api: add vma_pages.cocci
scripts/coccinelle/misc/irqf_oneshot.cocci: Fix grammar
scripts/coccinelle/misc/semicolon.cocci: Use imperative mood
coccinelle: simple_open: Use imperative mood
... -
Pull kconfig updates from Michal Marek:
- kconfig warns about junk characters in Kconfig files
- merge_config.sh error handling
- small cleanup* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
merge_config.sh: exit on missing input files
kconfig: Regenerate shipped zconf.{hash,lex}.c files
kconfig: warn of unhandled characters in Kconfig commands
kconfig: Delete unnecessary checks before the function call "sym_calc_value" -
Pull core kbuild updates from Michal Marek:
- modpost portability fix
- linker script fix
- genksyms segfault fix
- fixdep cleanup
- fix for clang detection* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kbuild: Fix clang detection
kbuild: fixdep: drop meaningless hash table initialization
kbuild: fixdep: optimize code slightly
genksyms: Regenerate parser
genksyms: Duplicate function pointer type definitions segfault
kbuild: Fix .text.unlikely placement
Avoid conflict with host definitions when cross-compiling -
Pull security subsystem updates from James Morris:
"Highlights:- PKCS#7 support added to support signed kexec, also utilized for
module signing. See comments in 3f1e1bea.** NOTE: this requires linking against the OpenSSL library, which
must be installed, e.g. the openssl-devel on Fedora **- Smack
- add IPv6 host labeling; ignore labels on kernel threads
- support smack labeling mounts which use binary mount data- SELinux:
- add ioctl whitelisting (see
http://kernsec.org/files/lss2015/vanderstoep.pdf)
- fix mprotect PROT_EXEC regression caused by mm change- Seccomp:
- add ptrace options for suspend/resume"* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (57 commits)
PKCS#7: Add OIDs for sha224, sha284 and sha512 hash algos and use them
Documentation/Changes: Now need OpenSSL devel packages for module signing
scripts: add extract-cert and sign-file to .gitignore
modsign: Handle signing key in source tree
modsign: Use if_changed rule for extracting cert from module signing key
Move certificate handling to its own directory
sign-file: Fix warning about BIO_reset() return value
PKCS#7: Add MODULE_LICENSE() to test module
Smack - Fix build error with bringup unconfigured
sign-file: Document dependency on OpenSSL devel libraries
PKCS#7: Appropriately restrict authenticated attributes and content type
KEYS: Add a name for PKEY_ID_PKCS7
PKCS#7: Improve and export the X.509 ASN.1 time object decoder
modsign: Use extract-cert to process CONFIG_SYSTEM_TRUSTED_KEYS
extract-cert: Cope with multiple X.509 certificates in a single file
sign-file: Generate CMS message as signature instead of PKCS#7
PKCS#7: Support CMS messages also [RFC5652]
X.509: Change recorded SKID & AKID to not include Subject or Issuer
PKCS#7: Check content type and versions
MAINTAINERS: The keyrings mailing list has moved
...
05 Sep, 2015
6 commits
-
I wrote a small script to show word-pair from all linux spelling-typo
commits, and get following result by sort | uniq -c:181 occured -> occurred
78 transfered -> transferred
67 recieved -> received
65 dependant -> dependent
58 wether -> whether
56 accomodate -> accommodate
54 occured -> occurred
51 recieve -> receive
47 cant -> can't
40 sucessfully -> successfully
...Some of them are not in spelling.txt, this patch adds the most common
word-pairs into spelling.txt.Signed-off-by: Zhao Lei
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the stack decoder for the ARM architecture.
An ARM stack is designed as :[ 81.547704] [] (bucket_find_contain) from [] (check_sync+0x40/0x4f8)
[ 81.559668] [] (check_sync) from [] (debug_dma_sync_sg_for_cpu+0x128/0x194)
[ 81.571583] [] (debug_dma_sync_sg_for_cpu) from [] (__videobuf_sThe current script doesn't expect the symbols to be bound by
parenthesis, and triggers the following errors :awk: cmd. line:1: error: Unmatched ( or \(: / (check_sync$/
[ 81.547704] (bucket_find_contain) from (check_sync+0x40/0x4f8)Fix it by chopping starting and ending parenthesis from the each symbol
name.As a side note, this probably comes from the function
dump_backtrace_entry(), which is implemented differently for each
architecture. That makes a single decoding script a bit a challenge.Signed-off-by: Robert Jarzmik
Cc: Sasha Levin
Cc: Russell King
Cc: Michal Marek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If indent is not found, bail out immediately instead of spitting random
shell script error messages.Signed-off-by: Jean Delvare
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Editors like emacs and vi recognize a number of error message formats.
The format used by the kerneldoc tool is not recognized by emacs.Change the kerneldoc error message format to the GNU style such that the
emacs prev-error and next-error commands can be used to navigate through
kerneldoc error messages. For more information about the GNU error
message format, see also
https://www.gnu.org/prep/standards/html_node/Errors.html.This patch has been generated via the following sed command:
sed -i.orig 's/Error(\${file}:\$.):/\${file}:\$.: error:/g;s/Warning(\${file}:\$.):/\${file}:\$.: warning:/g;s/Warning(\${file}):/\${file}:1: warning:/g;s/Info(\${file}:\$.):/\${file}:\$.: info:/g' scripts/kernel-doc
Signed-off-by: Bart Van Assche
Cc: Johannes Berg
Acked-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I just did a spelling mistake of uninitialized and wrote that as
unintialized. Fortunately I noticed it in my final review.Signed-off-by: Sudip Mukherjee
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
misspelled words for check:-
chcek
chck
cehckI myself did these spell mistakes in changelog for patches, Thus
suggesting to add in spelling.txt, so that checkpatch.pl warns it
earlier. References:-./arch/powerpc/kernel/exceptions-64e.S:456: . . . make sure you chcek
https://lkml.org/lkml/2015/6/25/289
./arch/x86/mm/pageattr.c:1368: * No need to cehck in that case[akpm@linux-foundation.org: add whcih->which, whcih I always get wrong]
Signed-off-by: Maninder Singh
Acked-by: Kees Cook
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Sep, 2015
4 commits
-
We cannot detect clang before including the arch Makefile, because that
can set the default cross compiler. We also cannot detect clang after
including the arch Makefile, because powerpc wants to know about clang.
Solve this by using an deferred variable. This costs us a few shell
invocations, but this is only a constant number.Reported-by: Behan Webster
Reported-by: Anton Blanchard
Signed-off-by: Michal Marek -
Make deb-pkg build both source and binary package like make rpm-pkg does.
For people who only need binary kernel package, there is now bindeb-pkg
target, same target also used to build the .deb files if built from the
source package using dpkg-buildpackage.Generated source package will build the same kernel .config than what
was available for make deb-pkg. The name of the source package can
be set with KDEB_SOURCENAME enviroment variable.The source package is useful for GPL compliance, or for feeding to a
automated debian package builder.Cc: Chris J Arges
Reviewed-by: maximilian attems
Reviewed-by: Ben Hutchings
Signed-off-by: Riku Voipio
Signed-off-by: Michal Marek -
Split source tarball creation from rpm-pkg target
so it can be used from deb-pkg target as well. As
added bonus, we can now pretty print TAR the name of
tarball created in quiet modeThis patch prepares the groundwork for deb-pkg source
package adding bit.Signed-off-by: Riku Voipio
Signed-off-by: Michal Marek -
Pull locking and atomic updates from Ingo Molnar:
"Main changes in this cycle are:- Extend atomic primitives with coherent logic op primitives
(atomic_{or,and,xor}()) and deprecate the old partial APIs
(atomic_{set,clear}_mask())The old ops were incoherent with incompatible signatures across
architectures and with incomplete support. Now every architecture
supports the primitives consistently (by Peter Zijlstra)- Generic support for 'relaxed atomics':
- _acquire/release/relaxed() flavours of xchg(), cmpxchg() and {add,sub}_return()
- atomic_read_acquire()
- atomic_set_release()This came out of porting qwrlock code to arm64 (by Will Deacon)
- Clean up the fragile static_key APIs that were causing repeat bugs,
by introducing a new one:DEFINE_STATIC_KEY_TRUE(name);
DEFINE_STATIC_KEY_FALSE(name);which define a key of different types with an initial true/false
value.Then allow:
static_branch_likely()
static_branch_unlikely()to take a key of either type and emit the right instruction for the
case. To be able to know the 'type' of the static key we encode it
in the jump entry (by Peter Zijlstra)- Static key self-tests (by Jason Baron)
- qrwlock optimizations (by Waiman Long)
- small futex enhancements (by Davidlohr Bueso)
- ... and misc other changes"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (63 commits)
jump_label/x86: Work around asm build bug on older/backported GCCs
locking, ARM, atomics: Define our SMP atomics in terms of _relaxed() operations
locking, include/llist: Use linux/atomic.h instead of asm/cmpxchg.h
locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics
locking/qrwlock: Implement queue_write_unlock() using smp_store_release()
locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition
locking, asm-generic: Add _{relaxed|acquire|release}() variants for 'atomic_long_t'
locking, asm-generic: Rework atomic-long.h to avoid bulk code duplication
locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations
locking, compiler.h: Cast away attributes in the WRITE_ONCE() magic
locking/static_keys: Make verify_keys() static
jump label, locking/static_keys: Update docs
locking/static_keys: Provide a selftest
jump_label: Provide a self-test
s390/uaccess, locking/static_keys: employ static_branch_likely()
x86, tsc, locking/static_keys: Employ static_branch_likely()
locking/static_keys: Add selftest
locking/static_keys: Add a new static_key interface
locking/static_keys: Rework update logic
locking/static_keys: Add static_key_{en,dis}able() helpers
...
01 Sep, 2015
2 commits
-
Pull RCU updates from Ingo Molnar:
"The main RCU changes in this cycle are:- the combination of tree geometry-initialization simplifications and
OS-jitter-reduction changes to expedited grace periods. These two
are stacked due to the large number of conflicts that would
otherwise result.- privatize smp_mb__after_unlock_lock().
This commit moves the definition of smp_mb__after_unlock_lock() to
kernel/rcu/tree.h, in recognition of the fact that RCU is the only
thing using this, that nothing else is likely to use it, and that
it is likely to go away completely.- documentation updates.
- torture-test updates.
- misc fixes"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
rcu,locking: Privatize smp_mb__after_unlock_lock()
rcu: Silence lockdep false positive for expedited grace periods
rcu: Don't disable CPU hotplug during OOM notifiers
scripts: Make checkpatch.pl warn on expedited RCU grace periods
rcu: Update MAINTAINERS entry
rcu: Clarify CONFIG_RCU_EQS_DEBUG help text
rcu: Fix backwards RCU_LOCKDEP_WARN() in synchronize_rcu_tasks()
rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN()
rcu: Make rcu_is_watching() really notrace
cpu: Wait for RCU grace periods concurrently
rcu: Create a synchronize_rcu_mult()
rcu: Fix obsolete priority-boosting comment
rcu: Use WRITE_ONCE in RCU_INIT_POINTER
rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT
rcu: Add RCU-sched flavors of get-state and cond-sync
rcu: Add fastpath bypassing funnel locking
rcu: Rename RCU_GP_DONE_FQS to RCU_GP_DOING_FQS
rcu: Pull out wait_event*() condition into helper function
documentation: Describe new expedited stall warnings
rcu: Add stall warnings to synchronize_sched_expedited()
... -
Pull documentation updates from Jonathan Corbet:
"There's been a fair amount going on in the docs tree this time around,
including:- Support for reproducible document builds, from Ben Hutchings and
company.- The ability to automatically generate cross-reference links within
a single DocBook book and embedded descriptions for large
structures. From Danilo Cesar Lemes de Paula.- A new document on how to add a system call from David Drysdale.
- Chameleon bus documentation from Johannes Thumshirn.
...plus the usual collection of improvements, typo fixes, and more"
* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (39 commits)
Documentation, add kernel-parameters.txt entry for dis_ucode_ldr
Documentation/x86: Rename IRQSTACKSIZE to IRQ_STACK_SIZE
Documentation/Intel-IOMMU.txt: Modify definition of DRHD
docs: update HOWTO for 3.x -> 4.x versioning
kernel-doc: ignore unneeded attribute information
scripts/kernel-doc: Adding cross-reference links to html documentation.
DocBook: Fix non-determinstic installation of duplicate man pages
Documentation: minor typo fix in mailbox.txt
Documentation: describe how to add a system call
doc: Add more workqueue functions to the documentation
ARM: keystone: add documentation for SoCs and EVMs
scripts/kernel-doc Allow struct arguments documentation in struct body
SubmittingPatches: remove stray quote character
Revert "DocBook: Avoid building man pages repeatedly and inconsistently"
Documentation: Minor changes to men-chameleon-bus.txt
Doc: fix trivial typo in SubmittingPatches
MAINTAINERS: Direct Documentation/DocBook/media properly
Documentation: installed man pages don't need to be executable
fix Evolution submenu name in email-clients.txt
Documentation: Add MCB documentation
...
31 Aug, 2015
1 commit
-
Pull char/misc driver patches from Greg KH:
"Here's the "big" char/misc driver update for 4.3-rc1.Not much really interesting here, just a number of little changes all
over the place, and some nice consolidation of the nvmem drivers to a
common framework. As usual, the mei drivers stand out as the largest
"churn" to handle new devices and features in their hardware.All have been in linux-next for a while with no issues"
* tag 'char-misc-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (136 commits)
auxdisplay: ks0108: initialize local parport variable
extcon: palmas: Fix build break due to devm_gpiod_get_optional API change
extcon: palmas: Support GPIO based USB ID detection
extcon: Fix signedness bugs about break error handling
extcon: Drop owner assignment from i2c_driver
extcon: arizona: Simplify pdata symantics for micd_dbtime
extcon: arizona: Declare 3-pole jack if we detect open circuit on mic
extcon: Add exception handling to prevent the NULL pointer access
extcon: arizona: Ensure variables are set for headphone detection
extcon: arizona: Use gpiod inteface to handle micd_pol_gpio gpio
extcon: arizona: Add basic microphone detection DT/ACPI bindings
extcon: arizona: Update to use the new device properties API
extcon: palmas: Remove the mutually_exclusive array
extcon: Remove optional print_state() function pointer of struct extcon_dev
extcon: Remove duplicate header file in extcon.h
extcon: max77843: Clear IRQ bits state before request IRQ
toshiba laptop: replace ioremap_cache with ioremap
misc: eeprom: max6875: clean up max6875_read()
misc: eeprom: clean up eeprom_read()
misc: eeprom: 93xx46: clean up eeprom_93xx46_bin_read/write
...
28 Aug, 2015
2 commits
-
This adds a simple perl script for reading two files as produced by
the stackusage script and computing the changes in stack usage. For
example:$ scripts/stackusage -o /tmp/old.su CC=gcc-4.7 -j8 fs/ext4/
$ scripts/stackusage -o /tmp/new.su CC=gcc-5.0 -j8 fs/ext4/
$ scripts/stackdelta /tmp/{old,new}.su | sort -k5,5gshows that gcc 5.0 generally produces less stack-hungry code than gcc
4.7. Obviously, the script can also be used for measuring the effect
of commits, .config tweaks or whatnot.Signed-off-by: Rasmus Villemoes
Signed-off-by: Michal Marek -
The current checkstack.pl script has a few problems, stemming from the
overly simplistic attempt at parsing objdump output with regular
expressions: For example, on x86_64 it doesn't take the push
instruction into account, making it consistently underestimate the
real stack use, and it also doesn't capture stack pointer adjustments
of exactly 128 bytes [1].Since newer gcc (>= 4.6) knows about -fstack-usage, we might as well
take the information straight from the horse's mouth. This patch
introduces scripts/stackusage, which is a simple wrapper for running
make with KCFLAGS set to -fstack-usage. Example use isscripts/stackusage -o out.su -j8 lib/
The script understands "-o foo" for writing to 'foo' and -h for a
trivial help text; anything else is passed to make.Afterwards, we find all newly created .su files, massage them a
little, sort by stack use and write the result to a single output
file.Note that the function names printed by (at least) gcc 4.7 are
sometimes useless. For example, the first three lines of out.su
generated above are./lib/decompress_bunzip2.c:155 get_next_block 448 static
./lib/decompress_unlzma.c:537 unlzma 336 static
./lib/vsprintf.c:616 8 304 staticThat function '8' is really the static symbol_string(), but it has
been subject to 'interprocedural scalar replacement of aggregates', so
its name in the object file is 'symbol_string.isra.8'. gcc 5.0 doesn't
have this problem; it uses the full name as seen in the object file.[1] Since gcc encodes that by
48 83 c4 80 add $0xffffffffffffff80,%rsp
and not
48 81 ec 80 00 00 00 sub $0x80,%rsp
since -128 fits in an imm8.
Signed-off-by: Rasmus Villemoes
Signed-off-by: Michal Marek
27 Aug, 2015
1 commit
-
...so "git status" doesn't nag us about them.
Cc: David Woodhouse
Signed-off-by: Paul Gortmaker
Signed-off-by: David Howells
Signed-off-by: James Morris
26 Aug, 2015
1 commit
-
This causes conflicts when using multiple kernels built
with this mechanism.Reviewed-by: Dennis Dalessandro
Signed-off-by: Mike Marciniszyn
Signed-off-by: Michal Marek
