- 08 Mar, 2019 40 commits
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Johannes Weiner authored
This function can only be called safely from very specific scheduler contexts. Document those. Link: http://lkml.kernel.org/r/20190206150528.31198-1-hannes@cmpxchg.orgSigned-off-by:
Johannes Weiner <hannes@cmpxchg.org> Suggested-by:
Andrew Morton <akpm@linux-foundation.org> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Oleg Nesterov authored
Large enterprise clients often run applications out of networked file systems where the IT mandated layout of project volumes can end up leading to paths that are longer than 128 characters. Bumping this up to the next order of two solves this problem in all but the most egregious case while still fitting into a 512b slab. [oleg@redhat.com: update comment, per Kees] Link: http://lkml.kernel.org/r/20181112160956.GA28472@redhat.comSigned-off-by:
Oleg Nesterov <oleg@redhat.com> Reported-by:
Ben Woodard <woodard@redhat.com> Reviewed-by:
Michal Hocko <mhocko@suse.com> Acked-by:
Kees Cook <keescook@chromium.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Vineet Gupta authored
Link: http://lkml.kernel.org/r/1548275584-18096-2-git-send-email-vgupta@synopsys.com Link: http://lkml.kernel.org/g/20150807115710.GA16897@redhat.comSigned-off-by:
Vineet Gupta <vgupta@synopsys.com> Reviewed-by:
Anthony Yznaga <anthony.yznaga@oracle.com> Acked-by:
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Hou Tao authored
Now splice() on O_DIRECT-opened fat file will return -EFAULT, that is because the default .splice_write, namely default_file_splice_write(), will construct an ITER_KVEC iov_iter and dio_refill_pages() in dio path can not handle it. Fix it by implementing .splice_write through iter_file_splice_write(). Spotted by xfs-tests generic/091. Link: http://lkml.kernel.org/r/20190210094754.56355-1-houtao1@huawei.comSigned-off-by:
Hou Tao <houtao1@huawei.com> Acked-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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NeilBrown authored
autofs does not expect the pipe it is given to have O_NONBLOCK set - specifically if __kernel_write() in autofs_write() returns -EAGAIN, this is treated as a fatal error and the pipe is closed. For safety autofs should, therefore, clear the O_NONBLOCK flag. Releases of systemd prior to 8th February 2019 used pipe2(p, O_NONBLOCK|O_CLOEXEC) and thus (inadvertently) set this flag. Link: http://lkml.kernel.org/r/154993550902.3321.1183632970046073478.stgit@pluto-themaw-netSigned-off-by:
NeilBrown <neilb@suse.com> Signed-off-by:
Ian Kent <raven@themaw.net> Signed-off-by:
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Ian Kent authored
Fix checkpatch.sh WARNING about the use of seq_printf() to print simple strings in autofs_show_options(), use seq_puts() in this case. Link: http://lkml.kernel.org/r/154889012613.4863.12231175554744203482.stgit@pluto-themaw-netSigned-off-by:
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Ian Kent authored
Add an autofs file system mount option that can be used to provide a generic indicator to applications that the mount entry should be ignored when displaying mount information. In other OSes that provide autofs and that provide a mount list to user space based on the kernel mount list a no-op mount option ("ignore" is the one use on the most common OS) is allowed so that autofs file system users can optionally use it. The idea is that it be used by user space programs to exclude autofs mounts from consideration when reading the mounts list. Prior to the change to link /etc/mtab to /proc/self/mounts all I needed to do to achieve this was to use mount(2) and not update the mtab but now that no longer works. I know the symlinking happened a long time ago and I considered doing this then but, at the time I couldn't remember the commonly used option name and thought persuading the various utility maintainers would be too hard. But now I have a RHEL request to do this for compatibility for a widely used product so I want to go ahead with it and try and enlist the help of some utility package maintainers. Clearly, without the option nothing can be done so it's at least a start. Link: http://lkml.kernel.org/r/154725123970.11260.6113771566924907275.stgit@pluto-themaw-netSigned-off-by: -
Valdis Kletnieks authored
Sparse issues a warning: CHECK init/calibrate.c init/calibrate.c:271:28: warning: symbol 'calibration_delay_done' was not declared. Should it be static? The actual issue is that it's a __weak symbol that archs can override (in fact, ARM does so), but no prototype is provided. Let's provide one to prevent surprises. Link: http://lkml.kernel.org/r/18827.1548750938@turing-police.cc.vt.eduSigned-off-by:Valdis Kletnieks <valdis.kletnieks@vt.edu> Reviewed-by:
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Alexey Dobriyan authored
Link: http://lkml.kernel.org/r/20190204202830.GC27482@avx2Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by:
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Alexey Dobriyan authored
[adobriyan@gmail.com: fixup compilation] Link: http://lkml.kernel.org/r/20190205064334.GA2152@avx2 Link: http://lkml.kernel.org/r/20190204202800.GB27482@avx2Signed-off-by:
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Alexey Dobriyan authored
Number of ELF program headers is 16-bit by spec, so total size comfortably fits into "unsigned int". Space savings: 7 bytes! add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-7 (-7) Function old new delta load_elf_phdrs 137 130 -7 Link: http://lkml.kernel.org/r/20190204202715.GA27482@avx2Signed-off-by:
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Roman Penyaev authored
The goal of this patch is to reduce contention of ep_poll_callback() which can be called concurrently from different CPUs in case of high events rates and many fds per epoll. Problem can be very well reproduced by generating events (write to pipe or eventfd) from many threads, while consumer thread does polling. In other words this patch increases the bandwidth of events which can be delivered from sources to the poller by adding poll items in a lockless way to the list. The main change is in replacement of the spinlock with a rwlock, which is taken on read in ep_poll_callback(), and then by adding poll items to the tail of the list using xchg atomic instruction. Write lock is taken everywhere else in order to stop list modifications and guarantee that list updates are fully completed (I assume that write side of a rwlock does not starve, it seems qrwlock implementation has these guarantees). The following are some microbenchmark results based on the test [1] which starts threads which generate N events each. The test ends when all events are successfully fetched by the poller thread: spinlock ======== threads events/ms run-time ms 8 6402 12495 16 7045 22709 32 7395 43268 rwlock + xchg ============= threads events/ms run-time ms 8 10038 7969 16 12178 13138 32 13223 24199 According to the results bandwidth of delivered events is significantly increased, thus execution time is reduced. This patch was tested with different sort of microbenchmarks and artificial delays (e.g. "udelay(get_random_int() & 0xff)") introduced in kernel on paths where items are added to lists. [1] https://github.com/rouming/test-tools/blob/master/stress-epoll.c Link: http://lkml.kernel.org/r/20190103150104.17128-5-rpenyaev@suse.deSigned-off-by:Roman Penyaev <rpenyaev@suse.de> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Jason Baron <jbaron@akamai.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by:
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Roman Penyaev authored
Original comment "Activate ep->ws since epi->ws may get deactivated at any time" indeed sounds loud, but it is incorrect, because the path where we check epi->ws is a path where insert to ovflist happens, i.e. ep_scan_ready_list() has taken ep->mtx and waits for this callback to finish, thus ep_modify() (which unregisters wakeup source) waits for ep_scan_ready_list(). Here in this patch I simply call ep_pm_stay_awake_rcu(), which is a bit extra for this path (indirectly protected by main ep->mtx, so even rcu is not needed), but I do not want to create another naked __ep_pm_stay_awake() variant only for this particular case, so rcu variant is just better for all the cases. Link: http://lkml.kernel.org/r/20190103150104.17128-4-rpenyaev@suse.deSigned-off-by:
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Roman Penyaev authored
Patch series "use rwlock in order to reduce ep_poll_callback() contention", v3. The last patch targets the contention problem in ep_poll_callback(), which can be very well reproduced by generating events (write to pipe or eventfd) from many threads, while consumer thread does polling. The following are some microbenchmark results based on the test [1] which starts threads which generate N events each. The test ends when all events are successfully fetched by the poller thread: spinlock ======== threads events/ms run-time ms 8 6402 12495 16 7045 22709 32 7395 43268 rwlock + xchg ============= threads events/ms run-time ms 8 10038 7969 16 12178 13138 32 13223 24199 According to the results bandwidth of delivered events is significantly increased, thus execution time is reduced. This patch (of 4): All coming events are stored in FIFO order and this is also should be applicable to ->ovflist, which originally is stack, i.e. LIFO. Thus to keep correct FIFO order ->ovflist should reversed by adding elements to the head of the read list but not to the tail. Link: http://lkml.kernel.org/r/20190103150104.17128-2-rpenyaev@suse.deSigned-off-by:Davidlohr Bueso <dbueso@suse.de> Cc: Jason Baron <jbaron@akamai.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by:
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Joe Perches authored
Warn when any SPDX-License-Identifier: tag is not created on the proper line number. Link: http://lkml.kernel.org/r/9b74ee87f8c1b8fd310e213fcb4994d58610fcb6.camel@perches.comSigned-off-by:
Joe Perches <joe@perches.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: "Enrico Weigelt, metux IT consult" <lkml@metux.net> Signed-off-by:
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Vadim Bendebury authored
Presently C99 style comments are removed unconditionally before actual patch validity check happens. This is a problem for some third party projects which use checkpatch.pl but do not allow C99 style comments. This patch adds yet another variable, named C99_COMMENT_TOLERANCE. If it is included in the --ignore command line or config file options list, C99 comments in the patch are reported as errors. Tested by processing a patch with a C99 style comment, it passes the check just fine unless '--ignore C99_COMMENT_TOLERANCE' is present in .checkpatch.conf. Link: http://lkml.kernel.org/r/20190110224957.25008-1-vbendeb@chromium.orgSigned-off-by:
Vadim Bendebury <vbendeb@chromium.org> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
Many new generic allocation functions like the kvmalloc family have been added recently to the kernel. The allocation functions test now includes: o kvmalloc and variants o kstrdup_const o kmemdup_nul o dma_alloc_coherent o alloc_skb and variants Add a separate $allocFunctions variable to help make the allocation functions test a bit more readable. Miscellanea: o Use $allocFunctions in the unnecessary OOM message test and add exclude uses with __GFP_NOWARN o Use $allocFunctions in the unnecessary cast test o Add the kvmalloc family to the preferred sizeof alloc style foo = kvmalloc(sizeof(*foo), ...) Link: http://lkml.kernel.org/r/a5e60a2b93e10baf84af063f6c8e56402273105d.camel@perches.comSigned-off-by:
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Joe Perches authored
Using SPDX commenting style // or /* is specified for various file types in Documentation/process/license-rules.rst so add an appropriate test for .[chsS] files because many proposed file additions and patches do not use the correct style. Link: http://lkml.kernel.org/r/8b02899853247a2c67669561761f354dd3bd110e.camel@perches.comSigned-off-by:
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Dan Carpenter authored
The test_fw_config->reqs allocation succeeded so these addresses can't be NULL. Also on the second error path, we forgot to set "rc = -ENOMEM;". Link: http://lkml.kernel.org/r/20190221183700.GA1737@kadamSigned-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: lib/assoc_array.c: In function `assoc_array_delete': lib/assoc_array.c:1110:3: warning: this statement may fall through [-Wimplicit-fallthrough=] for (slot = 0; slot < ASSOC_ARRAY_FAN_OUT; slot++) { ^~~ lib/assoc_array.c:1118:2: note: here case assoc_array_walk_tree_empty: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Link: http://lkml.kernel.org/r/20190212212206.GA16378@embeddedorSigned-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by:
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Olof Johansson authored
Since we now build with -Wvla, any use of VLA throws a warning. Including this test, so... maybe we should just remove the test? lib/test_ubsan.c: In function 'test_ubsan_vla_bound_not_positive': lib/test_ubsan.c:48:2: warning: ISO C90 forbids variable length array 'buf' [-Wvla] For the out-of-bounds test, switch to non-VLA setup. lib/test_ubsan.c: In function 'test_ubsan_out_of_bounds': lib/test_ubsan.c:64:2: warning: ISO C90 forbids variable length array 'arr' [-Wvla] Link: http://lkml.kernel.org/r/20190113183210.56154-1-olof@lixom.netSigned-off-by:
Olof Johansson <olof@lixom.net> Acked-by:
Dmitry Vyukov <dvyukov@google.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Jinbum Park <jinb.park7@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by:
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Stanislaw Gruszka authored
fls counts bits starting from 1 to 32 (returns 0 for zero argument). If we add 1 we shift right one bit more and loose precision from divisor, what cause function incorect results with some numbers. Corrected code was tested in user-space, see bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202391 Link: http://lkml.kernel.org/r/1548686944-11891-1-git-send-email-sgruszka@redhat.com Fixes: 658716d1 ("div64_u64(): improve precision on 32bit platforms") Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Reported-by:
Siarhei Volkau <lis8215@gmail.com> Tested-by:
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Vineet Gupta authored
| > Also, set_mask_bits is used in fs quite a bit and we can possibly come up | > with a generic llsc based implementation (w/o the cmpxchg loop) | | May I also suggest changing the return value of set_mask_bits() to old. | | You can compute the new value given old, but you cannot compute the old | value given new, therefore old is the better return value. Also, no | current user seems to use the return value, so changing it is without | risk. Link: http://lkml.kernel.org/g/20150807110955.GH16853@twins.programming.kicks-ass.net Link: http://lkml.kernel.org/r/1548275584-18096-4-git-send-email-vgupta@synopsys.comSigned-off-by:
Peter Zijlstra <peterz@infradead.org> Reviewed-by:
Will Deacon <will.deacon@arm.com> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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Rasmus Villemoes authored
With coming changes on x86-64, all dynamic debug descriptors in a translation unit must have distinct names. The macro _dynamic_func_call takes care of that. No functional change. Link: http://lkml.kernel.org/r/20190212214150.4807-15-linux@rasmusvillemoes.dkSigned-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by:
Jason Baron <jbaron@akamai.com> Cc: David Sterba <dsterba@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Rasmus Villemoes authored
If CONFIG_DYNAMIC_DEBUG is not set, acpi_handle_debug directly invokes acpi_handle_printk (if DEBUG) or does a no-printk (if !DEBUG). So this macro is never used. Link: http://lkml.kernel.org/r/20190212214150.4807-14-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
dynamic debug may be implemented via static keys, but ACPI is missing out on that runtime benefit since it open-codes one possible definition of DYNAMIC_DEBUG_BRANCH. Link: http://lkml.kernel.org/r/20190212214150.4807-13-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
First, the btrfs_debug macros open-code (one possible definition of) DYNAMIC_DEBUG_BRANCH, so they don't benefit from the CONFIG_JUMP_LABEL optimization. Second, a planned change of struct _ddebug (to reduce its size on 64 bit machines) requires that all descriptors in a translation unit use distinct identifiers. Using the new _dynamic_func_call_no_desc helper macro from dynamic_debug.h takes care of both of these. No functional change. Link: http://lkml.kernel.org/r/20190212214150.4807-12-linux@rasmusvillemoes.dkSigned-off-by:
David Sterba <dsterba@suse.com> Acked-by:
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Rasmus Villemoes authored
For the upcoming 'define the _ddebug descriptor in assembly', we need all the descriptors in a translation unit to have distinct names (because asm does not understand C scope). The easiest way to achieve that is as usual with an extra level of macros, passing the identifier to use to the innermost macro, generating it via __UNIQUE_ID or something. However, instead of repeating that exercise for dynamic_pr_debug, dynamic_dev_dbg, dynamic_netdev_dbg and dynamic_hex_dump separately, we can use the similarity between their bodies to implement them via a common macro, _dynamic_func_call - though the hex_dump case requires a slight variant, since print_hex_dump does not take the _ddebug descriptor. We'll also get to use that variant elsewhere (btrfs). Link: http://lkml.kernel.org/r/20190212214150.4807-11-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
For symmetry with ddebug_remove_module, and to avoid a bit of ifdeffery in module.c, move the declaration of ddebug_add_module inside #if defined(CONFIG_DYNAMIC_DEBUG) and add a corresponding no-op stub in the #else branch. Link: http://lkml.kernel.org/r/20190212214150.4807-10-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
This serves two purposes: First, we get a diagnostic if (though extremely unlikely), any of the calls of ddebug_add_module for built-in code fails, effectively disabling dynamic_debug. Second, I want to make struct _ddebug opaque, and avoid accessing any of its members outside dynamic_debug.[ch]. Link: http://lkml.kernel.org/r/20190212214150.4807-9-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
The only caller of ddebug_{add,remove}_module outside dynamic_debug.c is kernel/module.c, which is obviously not itself modular (though it would be an interesting exercise to make that happen...). I also fail to see how these interfaces can be used by modules, in-tree or not. Link: http://lkml.kernel.org/r/20190212214150.4807-8-linux@rasmusvillemoes.dkSigned-off-by: -
Rasmus Villemoes authored
Now that we store the passed-in string directly in ddebug_add_module, we can use pointer equality instead of strcmp. This is a little more efficient, but more importantly, this also makes the code somewhat more correct: Currently, if one loads and then unloads a module whose name happens to match the KBUILD_MODNAME of some built-in functionality (which need not even be modular at all), all of their dynamic debug entries vanish along with those of the actual module. For example, loading and unloading a core.ko hides all pr_debugs from drivers/base/core.c and other built-in files called core.c (incidentally, there is an in-tree module whose name is core, but I just tested this with an out-of-tree trivial one). Link: http://lkml.kernel.org/r/20190212214150.4807-7-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
For built-in modules, we're already reusing the passed-in string via kstrdup_const(). But for actual modules (i.e. when we're called from dynamic_debug_setup in module.c), the passed-in string (which points at the name[] array inside struct module) is also guaranteed to live at least as long as the struct ddebug_table, since free_module() calls ddebug_remove_module(). Link: http://lkml.kernel.org/r/20190212214150.4807-6-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
Instead of defining DEFINE_DYNAMIC_DEBUG_METADATA in terms of a helper DEFINE_DYNAMIC_DEBUG_METADATA_KEY, that needs another helper dd_key_init to be properly defined, just make the various #ifdef branches define a _DPRINTK_KEY_INIT that can be used directly, similar to _DPRINTK_FLAGS_DEFAULT. Link: http://lkml.kernel.org/r/20190212214150.4807-5-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
pr_debug_ratelimited tests the dynamic debug descriptor the old-fashioned way, and doesn't utilize the static key/jump label implementation when CONFIG_JUMP_LABEL is set. Use the DYNAMIC_DEBUG_BRANCH which is defined appropriately. Link: http://lkml.kernel.org/r/20190212214150.4807-4-linux@rasmusvillemoes.dkSigned-off-by:
Petr Mladek <pmladek@suse.com> Acked-by:
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Rasmus Villemoes authored
net_dbg_ratelimited tests the dynamic debug descriptor the old-fashioned way, and doesn't utilize the static key/jump label implementation when CONFIG_JUMP_LABEL is set. Use the DYNAMIC_DEBUG_BRANCH which is defined appropriately. Link: http://lkml.kernel.org/r/20190212214150.4807-3-linux@rasmusvillemoes.dkSigned-off-by:
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Rasmus Villemoes authored
Patch series "various dynamic_debug patches", v4. This started as an experiment to see how hard it would be to change the four pointers in struct _ddebug into relative offsets, a la CONFIG_GENERIC_BUG_RELATIVE_POINTERS, thus saving 16 bytes per pr_debug site (and thus exactly making up for the extra space used by the introduction of jump labels in 9049fc74). I stumbled on a few things that are probably worth fixing regardless of whether that goal is deemed worthwhile. Back at v3 (in November), I redid the implementation on top of the fancy new asm-macros stuff. Luckily enough, v3 didn't get picked up, since the asm-macros were backed out again. I still want to do the relative-pointers thing eventually, but we're close to the merge window opening, so here's just most of the "incidental" patches, some of which also serve as preparation for the relative pointers. This patch (of 4): dev_dbg_ratelimited tests the dynamic debug descriptor the old-fashioned way, and doesn't utilize the static key/jump label implementation when CONFIG_JUMP_LABEL is set. Use the DYNAMIC_DEBUG_BRANCH which is defined appropriately. Link: http://lkml.kernel.org/r/20190212214150.4807-2-linux@rasmusvillemoes.dkSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by:
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Nadav Amit authored
Commit 95846ecf ("pid: replace pid bitmap implementation with IDR API") removed next_pidmap() but left its declaration. Remove it. No functional change. Link: http://lkml.kernel.org/r/20190213113736.21922-1-namit@vmware.comSigned-off-by:
Nadav Amit <namit@vmware.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Gargi Sharma <gs051095@gmail.com> Signed-off-by:
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Masahiro Yamada authored
<linux/kernel.h> tends to be cluttered because we often put various sort of unrelated stuff in it. So, we have split out a sensible chunk of code into a separate header from time to time. This commit splits out the *_MAX and *_MIN defines. The standard header <limits.h> contains various MAX, MIN constants including numerial limits. [1] I think it makes sense to move in-kernel MAX, MIN constants into include/linux/limits.h. We already have include/uapi/linux/limits.h to contain some user-space constants. I changed its include guard to _UAPI_LINUX_LIMITS_H. This change has no impact to the user-space because scripts/headers_install.sh rips off the '_UAPI' prefix from the include guards of exported headers. [1] http://pubs.opengroup.org/onlinepubs/009604499/basedefs/limits.h.html Link: http://lkml.kernel.org/r/1549156242-20806-2-git-send-email-yamada.masahiro@socionext.comSigned-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Alex Elder <elder@linaro.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by:
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Masahiro Yamada authored
The commit log of 44f564a4 ("ipc: add definitions of USHORT_MAX and others") did not explain why it used (s16) and (u16) instead of (short) and (unsigned short). Let's use (short) and (unsigned short), which is more sensible, and more consistent with the other MAX/MIN defines. As you see in include/uapi/asm-generic/int-ll64.h, s16/u16 are typedef'ed as signed/unsigned short. So, this commit does not have a functional change. Remove the unneeded parentheses around ~0U while we are here. Link: http://lkml.kernel.org/r/1549156242-20806-1-git-send-email-yamada.masahiro@socionext.comSigned-off-by:
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