- 16 Dec, 2020 40 commits
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Joe Perches authored
There are about 100,000 uses of 'static const <type>' but about 400 uses of 'static <type> const' in the kernel where type is not a pointer. The kernel almost always uses "static const" over "const static" as there is a compiler warning for that declaration style. But there is no compiler warning for "static <type> const". So add a checkpatch warning for the atypical declaration uses of. const static <type> <foo> and static <type> const <foo> For example: $ ./scripts/checkpatch.pl -f --emacs --quiet --nosummary -types=static_const arch/arm/crypto/aes-ce-glue.c arch/arm/crypto/aes-ce-glue.c:75: WARNING: Move const after static - use 'static const u8' #75: FILE: arch/arm/crypto/aes-ce-glue.c:75: + static u8 const rcon[] = { Link: https://lkml.kernel.org/r/4b863be68e679546b40d50b97a4a806c03056a1c.camel@perches.comSigned-off-by:Joe Perches <joe@perches.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Łukasz Stelmach authored
Ignore autogenerated CamelCase-like defines and enum values like DRM_MODE_CONNECTOR_Unknown or ETHTOOL_LINK_MODE_Asym_Pause_BIT. Link: https://lkml.kernel.org/r/20201022184916.7904-1-l.stelmach@samsung.comSigned-off-by:
Łukasz Stelmach <l.stelmach@samsung.com> Suggested-by:
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Aditya Srivastava authored
Presence of hexadecimal address or symbol results in false warning message by checkpatch.pl. For example, running checkpatch on commit b8ad540d ("mptcp: fix memory leak in mptcp_subflow_create_socket()") results in warning: WARNING:REPEATED_WORD: Possible repeated word: 'ff' 00 00 00 00 00 00 00 00 00 2f 30 0a 81 88 ff ff ........./0..... Similarly, the presence of list command output in commit results in an unnecessary warning. For example, running checkpatch on commit 899e5ffb ("perf record: Introduce --switch-output-event") gives: WARNING:REPEATED_WORD: Possible repeated word: 'root' dr-xr-x---. 12 root root 4096 Apr 27 17:46 .. Here, it reports 'ff' and 'root' to be repeated, but it is in fact part of some address or code, where it has to be repeated. In these cases, the intent of the warning to find stylistic issues in commit messages is not met and the warning is just completely wrong in this case. To avoid these warnings, add an additional regex check for the directory permission pattern and avoid checking the line for this class of warning. Similarly, to avoid hex pattern, check if the word consists of hex symbols and skip this warning if it is not among the common english words formed using hex letters. A quick evaluation on v5.6..v5.8 showed that this fix reduces REPEATED_WORD warnings by the frequency of 1890. A quick manual check found all cases are related to hex output or list command outputs in commit messages. Link: https://lkml.kernel.org/r/20201024102253.13614-1-yashsri421@gmail.comSigned-off-by:
Aditya Srivastava <yashsri421@gmail.com> Acked-by:
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Dwaipayan Ray authored
Recently, commit 4f6ad8aa1eac ("checkpatch: move repeated word test") moved the repeated word test to check for more file types. But after this, if checkpatch.pl is run on MAINTAINERS, it generates several new warnings of the type: WARNING: Possible repeated word: 'git' For example: WARNING: Possible repeated word: 'git' +T: git git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml.git So, the pattern "git git://..." is a false positive in this case. There are several other combinations which may produce a wrong warning message, such as "@size size", ":Begin begin", etc. Extend repeated word check to compare the characters before and after the word matches. If there is a non whitespace character before the first word or a non whitespace character excluding punctuation characters after the second word, then the check is skipped and the warning is avoided. Also add case insensitive word matching to the repeated word check. Link: https://lore.kernel.org/linux-kernel-mentees/81b6a0bb2c7b9256361573f7a13201ebcd4876f1.camel@perches.com/ Link: https://lkml.kernel.org/r/20201017162732.152351-1-dwaipayanray1@gmail.comSigned-off-by:Dwaipayan Ray <dwaipayanray1@gmail.com> Suggested-by:
Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by:
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Gao Xiang authored
LZ4 final literal copy could be overlapped when doing in-place decompression, so it's unsafe to just use memcpy() on an optimized memcpy approach but memmove() instead. Upstream LZ4 has updated this years ago [1] (and the impact is non-sensible [2] plus only a few bytes remain), this commit just synchronizes LZ4 upstream code to the kernel side as well. It can be observed as EROFS in-place decompression failure on specific files when X86_FEATURE_ERMS is unsupported, memcpy() optimization of commit 59daa706 ("x86, mem: Optimize memcpy by avoiding memory false dependece") will be enabled then. Currently most modern x86-CPUs support ERMS, these CPUs just use "rep movsb" approach so no problem at all. However, it can still be verified with forcely disabling ERMS feature... arch/x86/lib/memcpy_64.S: ALTERNATIVE_2 "jmp memcpy_orig", "", X86_FEATURE_REP_GOOD, \ - "jmp memcpy_erms", X86_FEATURE_ERMS + "jmp memcpy_orig", X86_FEATURE_ERMS We didn't observe any strange on arm64/arm/x86 platform before since most memcpy() would behave in an increasing address order ("copy upwards" [3]) and it's the correct order of in-place decompression but it really needs an update to memmove() for sure considering it's an undefined behavior according to the standard and some unique optimization already exists in the kernel. [1] https://github.com/lz4/lz4/commit/33cb8518ac385835cc17be9a770b27b40cd0e15b [2] https://github.com/lz4/lz4/pull/717#issuecomment-497818921 [3] https://sourceware.org/bugzilla/show_bug.cgi?id=12518 Link: https://lkml.kernel.org/r/20201122030749.2698994-1-hsiangkao@redhat.comSigned-off-by:
Gao Xiang <hsiangkao@redhat.com> Reviewed-by:
Nick Terrell <terrelln@fb.com> Cc: Yann Collet <yann.collet.73@gmail.com> Cc: Miao Xie <miaoxie@huawei.com> Cc: Chao Yu <yuchao0@huawei.com> Cc: Li Guifu <bluce.liguifu@huawei.com> Cc: Guo Xuenan <guoxuenan@huawei.com> Signed-off-by:
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Alexey Dobriyan authored
Use proper conversion functions. kstrto*() variants exist for all standard types. Link: https://lkml.kernel.org/r/20201122123410.GB92364@localhost.localdomainSigned-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Francis Laniel authored
In lkdtm.h, files targeted in comments are named "lkdtm_file.c" while there are named "file.c" in directory. Link: https://lkml.kernel.org/r/20201122162451.27551-6-laniel_francis@privacyrequired.comSigned-off-by:
Francis Laniel <laniel_francis@privacyrequired.com> Acked-by:
Kees Cook <keescook@chromium.org> Cc: Daniel Axtens <dja@axtens.net> Cc: Daniel Micay <danielmicay@gmail.com> Signed-off-by:
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Francis Laniel authored
This new test ensures that fortified strscpy has the same behavior than vanilla strscpy (e.g. returning -E2BIG when src content is truncated). Finally, it generates a crash at runtime because there is a write overflow in destination string. Link: https://lkml.kernel.org/r/20201122162451.27551-5-laniel_francis@privacyrequired.comSigned-off-by:
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Francis Laniel authored
The fortified version of strscpy ensures the following before vanilla strscpy is called: 1. There is no read overflow because we either size is smaller than src length or we shrink size to src length by calling fortified strnlen. 2. There is no write overflow because we either failed during compilation or at runtime by checking that size is smaller than dest size. Link: https://lkml.kernel.org/r/20201122162451.27551-4-laniel_francis@privacyrequired.comSigned-off-by:
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Daniel Axtens authored
Add code to test both: - runtime detection of the overrun of a structure. This covers the __builtin_object_size(x, 0) case. This test is called FORTIFY_OBJECT. - runtime detection of the overrun of a char array within a structure. This covers the __builtin_object_size(x, 1) case which can be used for some string functions. This test is called FORTIFY_SUBOBJECT. Link: https://lkml.kernel.org/r/20201122162451.27551-3-laniel_francis@privacyrequired.comSigned-off-by:
Daniel Axtens <dja@axtens.net> Signed-off-by:
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Daniel Axtens authored
Patch series "Fortify strscpy()", v7. This patch implements a fortified version of strscpy() enabled by setting CONFIG_FORTIFY_SOURCE=y. The new version ensures the following before calling vanilla strscpy(): 1. There is no read overflow because either size is smaller than src length or we shrink size to src length by calling fortified strnlen(). 2. There is no write overflow because we either failed during compilation or at runtime by checking that size is smaller than dest size. Note that, if src and dst size cannot be got, the patch defaults to call vanilla strscpy(). The patches adds the following: 1. Implement the fortified version of strscpy(). 2. Add a new LKDTM test to ensures the fortified version still returns the same value as the vanilla one while panic'ing when there is a write overflow. 3. Correct some typos in LKDTM related file. I based my modifications on top of two patches from Daniel Axtens which modify calls to __builtin_object_size, in fortified string functions, to ensure the true size of char * are returned and not the surrounding structure size. About performance, I measured the slow down of fortified strscpy(), using the vanilla one as baseline. The hardware I used is an Intel i3 2130 CPU clocked at 3.4 GHz. I ran "Linux 5.10.0-rc4+ SMP PREEMPT" inside qemu 3.10 with 4 CPU cores. The following code, called through LKDTM, was used as a benchmark: #define TIMES 10000 char *src; char dst[7]; int i; ktime_t begin; src = kstrdup("foobar", GFP_KERNEL); if (src == NULL) return; begin = ktime_get(); for (i = 0; i < TIMES; i++) strscpy(dst, src, strlen(src)); pr_info("%d fortified strscpy() tooks %lld", TIMES, ktime_get() - begin); begin = ktime_get(); for (i = 0; i < TIMES; i++) __real_strscpy(dst, src, strlen(src)); pr_info("%d vanilla strscpy() tooks %lld", TIMES, ktime_get() - begin); kfree(src); I called the above code 30 times to compute stats for each version (in ns, round to int): | version | mean | std | median | 95th | | --------- | ------- | ------ | ------- | ------- | | fortified | 245_069 | 54_657 | 216_230 | 331_122 | | vanilla | 172_501 | 70_281 | 143_539 | 219_553 | On average, fortified strscpy() is approximately 1.42 times slower than vanilla strscpy(). For the 95th percentile, the fortified version is about 1.50 times slower. So, clearly the stats are not in favor of fortified strscpy(). But, the fortified version loops the string twice (one in strnlen() and another in vanilla strscpy()) while the vanilla one only loops once. This can explain why fortified strscpy() is slower than the vanilla one. This patch (of 5): When the fortify feature was first introduced in commit 6974f0c4 ("include/linux/string.h: add the option of fortified string.h functions"), Daniel Micay observed: * It should be possible to optionally use __builtin_object_size(x, 1) for some functions (C strings) to detect intra-object overflows (like glibc's _FORTIFY_SOURCE=2), but for now this takes the conservative approach to avoid likely compatibility issues. This is a case that often cannot be caught by KASAN. Consider: struct foo { char a[10]; char b[10]; } void test() { char *msg; struct foo foo; msg = kmalloc(16, GFP_KERNEL); strcpy(msg, "Hello world!!"); // this copy overwrites foo.b strcpy(foo.a, msg); } The questionable copy overflows foo.a and writes to foo.b as well. It cannot be detected by KASAN. Currently it is also not detected by fortify, because strcpy considers __builtin_object_size(x, 0), which considers the size of the surrounding object (here, struct foo). However, if we switch the string functions over to use __builtin_object_size(x, 1), the compiler will measure the size of the closest surrounding subobject (here, foo.a), rather than the size of the surrounding object as a whole. See https://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for more info. Only do this for string functions: we cannot use it on things like memcpy, memmove, memcmp and memchr_inv due to code like this which purposefully operates on multiple structure members: (arch/x86/kernel/traps.c) /* * regs->sp points to the failing IRET frame on the * ESPFIX64 stack. Copy it to the entry stack. This fills * in gpregs->ss through gpregs->ip. * */ memmove(&gpregs->ip, (void *)regs->sp, 5*8); This change passes an allyesconfig on powerpc and x86, and an x86 kernel built with it survives running with syz-stress from syzkaller, so it seems safe so far. Link: https://lkml.kernel.org/r/20201122162451.27551-1-laniel_francis@privacyrequired.com Link: https://lkml.kernel.org/r/20201122162451.27551-2-laniel_francis@privacyrequired.comSigned-off-by: -
Nick Desaulniers authored
A few architecture specific string.h functions used to be implemented in terms of preprocessor defines to the corresponding compiler builtins. Since this is no longer the case, remove unused #undefs. Only memcmp is still defined in terms of builtins for a few arches. Link: https://github.com/ClangBuiltLinux/linux/issues/428 Link: https://lkml.kernel.org/r/20201120041113.89382-1-ndesaulniers@google.com Fixes: 5f074f3e ("lib/string.c: implement a basic bcmp") Signed-off-by:
Nick Desaulniers <ndesaulniers@google.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Yury Norov <yury.norov@gmail.com> Cc: Alexandru Ardelean <alexandru.ardelean@analog.com> Cc: Nathan Chancellor <natechancellor@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by:
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Jakub Jelinek authored
As discussed in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97445 the const_ilog2 macro generates a lot of code which interferes badly with GCC inlining heuristics, until it can be proven that the ilog2 argument can or can't be simplified into a constant. It can be expressed using __builtin_clzll builtin which is supported by GCC 3.4 and later and when used only in the __builtin_constant_p guarded code it ought to always fold back to a constant. Other compilers support the same builtin for many years too. Other option would be to change the const_ilog2 macro, though as the description says it is meant to be used also in C constant expressions, and while GCC will fold it to constant with constant argument even in those, perhaps it is better to avoid using extensions in that case. [akpm@linux-foundation.org: coding style fixes] Link: https://lkml.kernel.org/r/20201120125154.GB3040@hirez.programming.kicks-ass.net Link: https://lkml.kernel.org/r/20201021132718.GB2176@tucnakSigned-off-by:
Jakub Jelinek <jakub@redhat.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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Andy Shevchenko authored
Test get_option() for a starter which is provided by cmdline.c. [akpm@linux-foundation.org: fix warning by constifying cmdline_test_values] [andriy.shevchenko@linux.intel.com: type of expected returned values should be int] Link: https://lkml.kernel.org/r/20201116104244.15472-1-andriy.shevchenko@linux.intel.com [andriy.shevchenko@linux.intel.com: provide meaningful MODULE_LICENSE()] Link: https://lkml.kernel.org/r/20201116104257.15527-1-andriy.shevchenko@linux.intel.com Link: https://lkml.kernel.org/r/20201112180732.75589-6-andriy.shevchenko@linux.intel.comSigned-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: Vitor Massaru Iha <vitor@massaru.org> Cc: Mark Brown <broonie@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Cc: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by:
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Andy Shevchenko authored
In the future we would like to use get_option() to only validate the string and parse it separately. To achieve this, allow NULL to be an output for get_option(). Link: https://lkml.kernel.org/r/20201112180732.75589-5-andriy.shevchenko@linux.intel.comSigned-off-by:
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Andy Shevchenko authored
When string doesn't have an integer and starts from hyphen get_option() may return interesting results. Fix it to return 0. The simple_strtoull() is used due to absence of simple_strtoul() in a boot code on some architectures. Note, the Fixes tag below is rather for anthropological curiosity. Link: https://lkml.kernel.org/r/20201112180732.75589-4-andriy.shevchenko@linux.intel.com Fixes: f6856583 ("Import 2.4.0-test2pre3") Signed-off-by:
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Sebastian Andrzej Siewior authored
On PREEMPT_RT the locks are quite different so they can't be tested as it is done below. The alternative is to test for the waitlock within rtmutex. This is the bare minimun to get it compiled. Problems which exist on PREEMP_RT: - none of the locks (spinlock_t, rwlock_t, mutex_t, rw_semaphore) may be acquired with disabled preemption or interrupts. If I read the code correct the it is possible to acquire a mutex_t with disabled interrupts. I don't know how to obtain a lock pointer. Technically they are not exported to userland. - memory can not be allocated with disabled preemption or interrupts even with GFP_ATOMIC. Link: https://lkml.kernel.org/r/20201028181041.xyeothhkouc3p4md@linutronix.deSigned-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Gustavo A. R. Silva authored
Use array_size() helper instead of the open-coded version in jhash2(). These sorts of multiplication factors need to be wrapped in array_size(). Also, use the preferred form for passing the size of an object type. Link: https://lkml.kernel.org/r/cb8a682e4bba4dbddd2bd8aca7f8c02fea89639b.1601565471.git.gustavoars@kernel.orgSigned-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by:
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Gustavo A. R. Silva authored
Make use of the flex_array_size() helper to calculate the size of a flexible array member within an enclosing structure. This helper offers defense-in-depth against potential integer overflows, while at the same time makes it explicitly clear that we are dealing with a flexible array member. Link: https://lkml.kernel.org/r/186e37fe07196ee41a0e562fa8a8cb7a01112ec5.1601565471.git.gustavoars@kernel.orgSigned-off-by:
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Gustavo A. R. Silva authored
Patch series "lib/stackdepot.c: Replace one-element array with flexible-array member". This series aims to replace a one-element array with a flexible-array member. Also, make use of the struct_size(), flexible_array_size() and array_size() helpers. This patch (of 3): There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. Refactor the code according to the use of a flexible-array member in struct stack_record, instead of a one-element array, and use the struct_size() helper to calculate the size for the allocation. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays Link: https://lkml.kernel.org/r/cover.1601565471.git.gustavoars@kernel.org Link: https://lore.kernel.org/lkml/5f75876b.x9zdN10esiC0qLHV%25lkp@intel.com/ Link: https://lkml.kernel.org/r/2f1e6a17aaa891ad9c58817cf0a10b8ab8894f59.1601565471.git.gustavoars@kernel.orgSigned-off-by:
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Geert Uytterhoeven authored
The test module to check that free_pages() does not leak memory does not provide any feedback whatsoever its state or progress, but may take some time on slow machines. Add the printing of messages upon starting each phase of the test, and upon completion. Link: https://lkml.kernel.org/r/20201018140445.20972-1-geert@linux-m68k.orgSigned-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by:
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Ma, Jianpeng authored
Link: https://lkml.kernel.org/r/BN7PR11MB26097166B6B46387D8A1ABA4FDE30@BN7PR11MB2609.namprd11.prod.outlook.com Fixes: 2afe27c7 ("lib/bitmap.c: bitmap_[empty,full]: remove code duplication") Signed-off-by:
Jianpeng Ma <jianpeng.ma@intel.com> Acked-by:
Yury Norov <yury.norov@gmail.com> Reviewed-by:
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Andy Shevchenko authored
There is no need to return int type out of boolean expression. Link: https://lkml.kernel.org/r/20201027180936.20806-1-andriy.shevchenko@linux.intel.comSigned-off-by:
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Hui Su authored
Cleanup: use #elif instead of #end and #elif. Link: https://lkml.kernel.org/r/20201015150736.GA91603@rlkSigned-off-by:
Hui Su <sh_def@163.com> Reviewed-by:
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Andy Shevchenko authored
kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt to start cleaning it up by splitting out mathematical helpers. At the same time convert users in header and lib folder to use new header. Though for time being include new header back to kernel.h to avoid twisted indirected includes for existing users. [sfr@canb.auug.org.au: fix powerpc build] Link: https://lkml.kernel.org/r/20201029150809.13059608@canb.auug.org.au Link: https://lkml.kernel.org/r/20201028173212.41768-1-andriy.shevchenko@linux.intel.comSigned-off-by:
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Christophe Leroy authored
When building mpc885_ads_defconfig with gcc 10.1, the function get_order() appears 50 times in vmlinux: [linux]# ppc-linux-objdump -x vmlinux | grep get_order | wc -l 50 [linux]# size vmlinux text data bss dec hex filename 3842620 675624 135160 4653404 47015c vmlinux In the old days, marking a function 'static inline' was forcing GCC to inline, but since commit ac7c3e4f ("compiler: enable CONFIG_OPTIMIZE_INLINING forcibly") GCC may decide to not inline a function. It looks like GCC 10 is taking poor decisions on this. get_order() compiles into the following tiny function, occupying 20 bytes of text. 0000007c <get_order>: 7c: 38 63 ff ff addi r3,r3,-1 80: 54 63 a3 3e rlwinm r3,r3,20,12,31 84: 7c 63 00 34 cntlzw r3,r3 88: 20 63 00 20 subfic r3,r3,32 8c: 4e 80 00 20 blr By forcing get_order() to be __always_inline, the size of text is reduced by 1940 bytes, that is almost twice the space occupied by 50 times get_order() [linux-powerpc]# size vmlinux text data bss dec hex filename 3840680 675588 135176 4651444 46f9b4 vmlinux Link: https://lkml.kernel.org/r/96c6172d619c51acc5c1c4884b80785c59af4102.1602949927.git.christophe.leroy@csgroup.euSigned-off-by:Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by:
Joel Stanley <joel@jms.id.au> Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by:
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Hui Su authored
We don't need pde_get()'s return value, so make pde_get() return nothing Link: https://lkml.kernel.org/r/20201211061944.GA2387571@rlkSigned-off-by:
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Alexey Dobriyan authored
Commit 1fde6f21 ("proc: fix /proc/net/* after setns(2)") only forced revalidation of regular files under /proc/net/ However, /proc/net/ is unusual in the sense of /proc/net/foo handlers take netns pointer from parent directory which is old netns. Steps to reproduce: (void)open("/proc/net/sctp/snmp", O_RDONLY); unshare(CLONE_NEWNET); int fd = open("/proc/net/sctp/snmp", O_RDONLY); read(fd, &c, 1); Read will read wrong data from original netns. Patch forces lookup on every directory under /proc/net . Link: https://lkml.kernel.org/r/20201205160916.GA109739@localhost.localdomain Fixes: 1da4d377 ("proc: revalidate misc dentries") Signed-off-by:
"Rantala, Tommi T. (Nokia - FI/Espoo)" <tommi.t.rantala@nokia.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Anand K Mistry authored
Similar to speculation store bypass, show information about the indirect branch speculation mode of a task in /proc/$pid/status. For testing/benchmarking, I needed to see whether IB (Indirect Branch) speculation (see Spectre-v2) is enabled on a task, to see whether an IBPB instruction should be executed on an address space switch. Unfortunately, this information isn't available anywhere else and currently the only way to get it is to hack the kernel to expose it (like this change). It also helped expose a bug with conditional IB speculation on certain CPUs. Another place this could be useful is to audit the system when using sanboxing. With this change, I can confirm that seccomp-enabled process have IB speculation force disabled as expected when the kernel command line parameter `spectre_v2_user=seccomp`. Since there's already a 'Speculation_Store_Bypass' field, I used that as precedent for adding this one. [amistry@google.com: remove underscores from field name to workaround documentation issue] Link: https://lkml.kernel.org/r/20201106131015.v2.1.I7782b0cedb705384a634cfd8898eb7523562da99@changeid Link: https://lkml.kernel.org/r/20201030172731.1.I7782b0cedb705384a634cfd8898eb7523562da99@changeidSigned-off-by:
Anand K Mistry <amistry@google.com> Cc: Anthony Steinhauser <asteinhauser@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Anand K Mistry <amistry@google.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alexey Gladkov <gladkov.alexey@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: NeilBrown <neilb@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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Randy Dunlap authored
Delete repeated words in fs/proc/. {the, which} where "which which" was changed to "with which". Link: https://lkml.kernel.org/r/20201028191525.13413-1-rdunlap@infradead.orgSigned-off-by:Randy Dunlap <rdunlap@infradead.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Thomas Gleixner authored
in_interrupt() is true for a variety of things including bottom half disabled regions. Deducing hard interrupt context from it is dubious at best. Use in_irq() which is true if called in hard interrupt context. Otherwise calling irq_exit() would do more harm than good. Link: https://lkml.kernel.org/r/20201113135832.2202833-1-bigeasy@linutronix.deSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Serge Belyshev <belyshev@depni.sinp.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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Laurent Dufour authored
On PowerPC, when dymically removing memory from a system we can see in the console a lot of messages like this: [ 186.575389] Offlined Pages 4096 This message is displayed on each LMB (256MB) removed, which means that we removing 1TB of memory, this message is displayed 4096 times. Moving it to DEBUG to not flood the console. Link: https://lkml.kernel.org/r/20201211150157.91399-1-ldufour@linux.ibm.comSigned-off-by:
Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Acked-by:
Michal Hocko <mhocko@suse.com> Cc: Nathan Lynch <nathanl@linux.ibm.com> Cc: Scott Cheloha <cheloha@linux.ibm.com> Signed-off-by:
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Zhaoyang Huang authored
The scenario on which "Free swap = -4kB" happens in my system, which is caused by several get_swap_pages racing with each other and show_swap_cache_info happens simutaniously. No need to add a lock on get_swap_page_of_type as we remove "Presub/PosAdd" here. ProcessA ProcessB ProcessC ngoals = 1 ngoals = 1 avail = nr_swap_pages(1) avail = nr_swap_pages(1) nr_swap_pages(1) -= ngoals nr_swap_pages(0) -= ngoals nr_swap_pages = -1 Link: https://lkml.kernel.org/r/1607050340-4535-1-git-send-email-zhaoyang.huang@unisoc.comSigned-off-by:
Zhaoyang Huang <zhaoyang.huang@unisoc.com> Acked-by:
Vlastimil Babka <vbabka@suse.cz> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI updates from Bjorn Helgaas: "Enumeration: - Decode PCIe 64 GT/s link speed (Gustavo Pimentel) - Remove unused HAVE_PCI_SET_MWI (Heiner Kallweit) - Reduce pci_set_cacheline_size() message to debug level (Heiner Kallweit) - Fix pci_slot_release() NULL pointer dereference (Jubin Zhong) - Unify ECAM constants in native PCI Express drivers (Krzysztof Wilczyński) - Return u8 from pci_find_capability() and similar (Puranjay Mohan) - Return u16 from pci_find_ext_capability() and similar (Bjorn Helgaas) - Fix ACPI companion lookup for device 0 on the root bus (Rafael J. Wysocki) Resource management: - Keep both device and resource name for config space remaps (Alexander Lobakin) - Bounds-check command-line resource alignment requests (Bjorn Helgaas) - Fix overflow in command-line resource alignment requests (Colin Ian King) Driver binding: - Avoid duplicate IDs in driver dynamic IDs list (Zhenzhong Duan) Power management: - Save/restore Precision Time Measurement Capability for suspend/resume (David E. Box) - Disable PTM during suspend to save power (David E. Box) - Add sysfs attribute for device power state (Maximilian Luz) - Rename pci_wakeup_bus() to pci_resume_bus() (Mika Westerberg) - Do not generate wakeup event when runtime resuming device (Mika Westerberg) - Save/restore ASPM L1SS Capability for suspend/resume (Vidya Sagar) Virtualization: - Mark AMD Raven iGPU ATS as broken in some platforms (Alex Deucher) - Add function 1 DMA alias quirk for Marvell 9215 SATA controller (Bjorn Helgaas) MSI: - Disable MSI for Pericom PCIe-USB adapter (Andy Shevchenko) - Improve warnings for 32-bit-limited MSI support (Vidya Sagar) Error handling: - Cache RCEC EA Capability offset in pci_init_capabilities() (Sean V Kelley) - Rename reset_link() to reset_subordinates() (Sean V Kelley) - Write AER Capability only when we control it (Sean V Kelley) - Clear AER status only when we control AER (Sean V Kelley) - Bind RCEC devices to the Root Port driver (Qiuxu Zhuo) - Recover from RCiEP AER errors (Qiuxu Zhuo) - Recover from RCEC AER errors (Sean V Kelley) - Add pcie_link_rcec() to associate RCiEPs (Sean V Kelley) - Add pcie_walk_rcec() to RCEC AER handling (Sean V Kelley) - Add pcie_walk_rcec() to RCEC PME handling (Sean V Kelley) - Add RCEC AER error injection support (Qiuxu Zhuo) Broadcom iProc PCIe controller driver: - Fix out-of-bound array accesses (Bharat Gooty) - Invalidate correct PAXB inbound windows (Roman Bacik) - Enhance PCIe Link information display (Srinath Mannam) Cadence PCIe controller driver: - Make "cdns,max-outbound-regions" property optional (Kishon Vijay Abraham I) Intel VMD host bridge driver: - Offset client MSI-X vectors (Jon Derrick) - Update type of __iomem pointers (Krzysztof Wilczyński) NVIDIA Tegra PCIe controller driver: - Move "dbi" accesses to post common DWC initialization (Vidya Sagar) - Read "dbi" base address to program in application logic (Vidya Sagar) - Fix ASPM-L1SS advertisement disable code (Vidya Sagar) - Set DesignWare IP version (Vidya Sagar) - Continue unconfig sequence even if parts fail (Vidya Sagar) - Check return value of tegra_pcie_init_controller() (Vidya Sagar) - Disable LTSSM during L2 entry (Vidya Sagar) Qualcomm PCIe controller driver: - Document PCIe bindings for SM8250 SoC (Manivannan Sadhasivam) - Add SM8250 SoC support (Manivannan Sadhasivam) - Add support for configuring BDF to SID mapping for SM8250 (Manivannan Sadhasivam) Renesas R-Car PCIe controller driver: - rcar: Drop unused members from struct rcar_pcie_host (Lad Prabhakar) - PCI: rcar-pci-host: Document r8a774e1 bindings (Lad Prabhakar) - PCI: rcar-pci-host: Convert bindings to json-schema (Yoshihiro Shimoda) - PCI: rcar-pci-host: Document r8a77965 bindings (Yoshihiro Shimoda) Samsung Exynos PCIe controller driver: - Rework driver to support Exynos5433 PCIe PHY (Jaehoon Chung) - Rework driver to support Exynos5433 variant (Jaehoon Chung) - Drop samsung,exynos5440-pcie binding (Marek Szyprowski) - Add the samsung,exynos-pcie binding (Marek Szyprowski) - Add the samsung,exynos-pcie-phy binding (Marek Szyprowski) Synopsys DesignWare PCIe controller driver: - Support multiple ATU memory regions (Rob Herring) - Move intel-gw ATU offset out of driver match data (Rob Herring) - Move "dbi", "dbi2", and "addr_space" resource setup into common code (Rob Herring) - Remove intel-gw unneeded function wrappers (Rob Herring) - Ensure all outbound ATU windows are reset (Rob Herring) - Use the common MSI irq_chip in dra7xx (Rob Herring) - Drop the .set_num_vectors() host op (Rob Herring) - Move MSI interrupt setup into DWC common code (Rob Herring) - Rework MSI initialization (Rob Herring) - Move link handling into common code (Rob Herring) - Move dw_pcie_msi_init() into core (Rob Herring) - Move dw_pcie_setup_rc() to DWC common code (Rob Herring) - Remove unnecessary wrappers around dw_pcie_host_init() (Rob Herring) - Drop keystone duplicated 'num-viewport'" (Rob Herring) - Move inbound and outbound windows to common struct (Rob Herring) - Detect number of iATU windows (Rob Herring) - Warn if non-prefetchable memory aperture size is > 32-bit (Vidya Sagar) - Add support to program ATU for >4GB memory (Vidya Sagar) - Set 32-bit DMA mask for MSI target address allocation (Vidya Sagar) TI J721E PCIe driver: - Fix "ti,syscon-pcie-ctrl" to take argument (Kishon Vijay Abraham I) - Add host mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham I) - Add EP mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham I) - Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg (Kishon Vijay Abraham I) TI Keystone PCIe controller driver: - Enable compile-testing on !ARM (Alex Dewar)" * tag 'pci-v5.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (100 commits) PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller PCI/ACPI: Fix companion lookup for device 0 on the root bus PCI: Keep both device and resource name for config space remaps PCI: xgene: Removed unused ".bus_shift" initialisers from pci-xgene.c PCI: vmd: Update type of the __iomem pointers PCI: iproc: Convert to use the new ECAM constants PCI: thunder-pem: Add constant for custom ".bus_shift" initialiser PCI: Unify ECAM constants in native PCI Express drivers PCI: Disable PTM during suspend to save power PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume PCI: Mark AMD Raven iGPU ATS as broken in some platforms PCI: j721e: Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg dt-bindings: PCI: Add EP mode dt-bindings for TI's J7200 SoC dt-bindings: PCI: Add host mode dt-bindings for TI's J7200 SoC dt-bindings: pci: ti,j721e: Fix "ti,syscon-pcie-ctrl" to take argument PCI: dwc: Set 32-bit DMA mask for MSI target address allocation PCI: qcom: Add support for configuring BDF to SID mapping for SM8250 PCI: Reduce pci_set_cacheline_size() message to debug level PCI: Remove unused HAVE_PCI_SET_MWI PCI: qcom: Add SM8250 SoC support ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to upstream revision 20201113, fix and clean up some resources manipulation code, extend the enumeration and gpio-line-names property documentation, clean up the handling of _DEP during device enumeration, add a new backlight DMI quirk, clean up transaction handling in the EC driver and make some assorted janitorial changes. Specifics: - Update ACPICA code in the kernel to upstream revision 20201113 with changes as follows: * Add 5 new UUIDs to the known UUID table (Bob Moore) * Remove extreaneous "the" in comments (Colin Ian King) * Add function trace macros to improve debugging (Erik Kaneda) * Fix interpreter memory leak (Erik Kaneda) * Handle "orphan" _REG for GPIO OpRegions (Hans de Goede) - Introduce resource_union() and resource_intersection() helpers and clean up some resource-manipulation code with the help of them (Andy Shevchenko) - Revert problematic commit related to the handling of resources in the ACPI core (Daniel Scally) - Extend the ACPI device enumeration documentation and the gpio-line-names _DSD property documentation, clean up the latter (Flavio Suligoi) - Clean up _DEP handling during device enumeration, modify the list of _DEP exceptions and the handling of it and fix up terminology related to _DEP (Hans de Goede, Rafael Wysocki) - Eliminate in_interrupt() usage from the ACPI EC driver (Sebastian Andrzej Siewior) - Clean up the advance_transaction() routine and related code in the ACPI EC driver (Rafael Wysocki) - Add new backlight quirk for GIGABYTE GB-BXBT-2807 (Jasper St Pierre) - Make assorted janitorial changes in several ACPI-related pieces of code (Hanjun Guo, Jason Yan, Punit Agrawal)" * tag 'acpi-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (40 commits) ACPI: scan: Fix up _DEP-related terminology with supplier/consumer ACPI: scan: Drop INT3396 from acpi_ignore_dep_ids[] ACPI: video: Add DMI quirk for GIGABYTE GB-BXBT-2807 Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks" ACPI: scan: Add PNP0D80 to the _DEP exceptions list ACPI: scan: Call acpi_get_object_info() from acpi_add_single_object() ACPI: scan: Add acpi_info_matches_hids() helper ACPICA: Update version to 20201113 ACPICA: Interpreter: fix memory leak by using existing buffer ACPICA: Add function trace macros to improve debugging ACPICA: Also handle "orphan" _REG methods for GPIO OpRegions ACPICA: Remove extreaneous "the" in comments ACPICA: Add 5 new UUIDs to the known UUID table resource: provide meaningful MODULE_LICENSE() in test suite ASoC: Intel: catpt: Replace open coded variant of resource_intersection() ACPI: processor: Drop duplicate setting of shared_cpu_map ACPI: EC: Clean up status flags checks in advance_transaction() ACPI: EC: Untangle error handling in advance_transaction() ACPI: EC: Simplify error handling in advance_transaction() ACPI: EC: Rename acpi_ec_is_gpe_raised() ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management updates from Rafael Wysocki: "These update cpufreq (core and drivers), cpuidle (polling state implementation and the PSCI driver), the OPP (operating performance points) framework, devfreq (core and drivers), the power capping RAPL (Running Average Power Limit) driver, the Energy Model support, the generic power domains (genpd) framework, the ACPI device power management, the core system-wide suspend code and power management utilities. Specifics: - Use local_clock() instead of jiffies in the cpufreq statistics to improve accuracy (Viresh Kumar). - Fix up OPP usage in the cpufreq-dt and qcom-cpufreq-nvmem cpufreq drivers (Viresh Kumar). - Clean up the cpufreq core, the intel_pstate driver and the schedutil cpufreq governor (Rafael Wysocki). - Fix up error code paths in the sti-cpufreq and mediatek cpufreq drivers (Yangtao Li, Qinglang Miao). - Fix cpufreq_online() to return error codes instead of success (0) in all cases when it fails (Wang ShaoBo). - Add mt8167 support to the mediatek cpufreq driver and blacklist mt8516 in the cpufreq-dt-platdev driver (Fabien Parent). - Modify the tegra194 cpufreq driver to always return values from the frequency table as the current frequency and clean up that driver (Sumit Gupta, Jon Hunter). - Modify the arm_scmi cpufreq driver to allow it to discover the power scale present in the performance protocol and provide this information to the Energy Model (Lukasz Luba). - Add missing MODULE_DEVICE_TABLE to several cpufreq drivers (Pali Rohár). - Clean up the CPPC cpufreq driver (Ionela Voinescu). - Fix NVMEM_IMX_OCOTP dependency in the imx cpufreq driver (Arnd Bergmann). - Rework the poling interval selection for the polling state in cpuidle (Mel Gorman). - Enable suspend-to-idle for PSCI OSI mode in the PSCI cpuidle driver (Ulf Hansson). - Modify the OPP framework to support empty (node-less) OPP tables in DT for passing dependency information (Nicola Mazzucato). - Fix potential lockdep issue in the OPP core and clean up the OPP core (Viresh Kumar). - Modify dev_pm_opp_put_regulators() to accept a NULL argument and update its users accordingly (Viresh Kumar). - Add frequency changes tracepoint to devfreq (Matthias Kaehlcke). - Add support for governor feature flags to devfreq, make devfreq sysfs file permissions depend on the governor and clean up the devfreq core (Chanwoo Choi). - Clean up the tegra20 devfreq driver and deprecate it to allow another driver based on EMC_STAT to be used instead of it (Dmitry Osipenko). - Add interconnect support to the tegra30 devfreq driver, allow it to take the interconnect and OPP information from DT and clean it up (Dmitry Osipenko). - Add interconnect support to the exynos-bus devfreq driver along with interconnect properties documentation (Sylwester Nawrocki). - Add suport for AMD Fam17h and Fam19h processors to the RAPL power capping driver (Victor Ding, Kim Phillips). - Fix handling of overly long constraint names in the powercap framework (Lukasz Luba). - Fix the wakeup configuration handling for bridges in the ACPI device power management core (Rafael Wysocki). - Add support for using an abstract scale for power units in the Energy Model (EM) and document it (Lukasz Luba). - Add em_cpu_energy() micro-optimization to the EM (Pavankumar Kondeti). - Modify the generic power domains (genpd) framwework to support suspend-to-idle (Ulf Hansson). - Fix creation of debugfs nodes in genpd (Thierry Strudel). - Clean up genpd (Lina Iyer). - Clean up the core system-wide suspend code and make it print driver flags for devices with debug enabled (Alex Shi, Patrice Chotard, Chen Yu). - Modify the ACPI system reboot code to make it prepare for system power off to avoid confusing the platform firmware (Kai-Heng Feng). - Update the pm-graph (multiple changes, mostly usability-related) and cpupower (online and offline CPU information support) PM utilities (Todd Brandt, Brahadambal Srinivasan)" * tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (86 commits) cpufreq: Fix cpufreq_online() return value on errors cpufreq: Fix up several kerneldoc comments cpufreq: stats: Use local_clock() instead of jiffies cpufreq: schedutil: Simplify sugov_update_next_freq() cpufreq: intel_pstate: Simplify intel_cpufreq_update_pstate() PM: domains: create debugfs nodes when adding power domains opp: of: Allow empty opp-table with opp-shared dt-bindings: opp: Allow empty OPP tables media: venus: dev_pm_opp_put_*() accepts NULL argument drm/panfrost: dev_pm_opp_put_*() accepts NULL argument drm/lima: dev_pm_opp_put_*() accepts NULL argument PM / devfreq: exynos: dev_pm_opp_put_*() accepts NULL argument cpufreq: qcom-cpufreq-nvmem: dev_pm_opp_put_*() accepts NULL argument cpufreq: dt: dev_pm_opp_put_regulators() accepts NULL argument opp: Allow dev_pm_opp_put_*() APIs to accept NULL opp_table opp: Don't create an OPP table from dev_pm_opp_get_opp_table() cpufreq: dt: Don't (ab)use dev_pm_opp_get_opp_table() to create OPP table opp: Reduce the size of critical section in _opp_kref_release() PM / EM: Micro optimization in em_cpu_energy cpufreq: arm_scmi: Discover the power scale in performance protocol ... -
git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linuxLinus Torvalds authored
Pull thermal updates from Daniel Lezcano: - Add upper and lower limits clamps for the cooling device state in the power allocator governor (Michael Kao) - Add upper and lower limits support for the power allocator governor (Lukasz Luba) - Optimize conditions testing for the trip points (Bernard Zhao) - Replace spin_lock_irqsave by spin_lock in hard IRQ on the rcar driver (Tian Tao) - Add MT8516 dt-bindings and device reset optional support (Fabien Parent) - Add a quiescent period to cool down the PCH when entering S0iX (Sumeet Pawnikar) - Use bitmap API instead of re-inventing the wheel on sun8i (Yangtao Li) - Remove useless NULL check in the hwmon driver (Bernard Zhao) - Update the current state in the cpufreq cooling device only if the frequency change is effective (Zhuguangqing) - Improve the schema validation for the rcar DT bindings (Geert Uytterhoeven) - Fix the user time unit in the documentation (Viresh Kumar) - Add PCI ids for Lewisburg PCH (Andres Freund) - Add hwmon support on amlogic (Martin Blumenstingl) - Fix build failure for PCH entering on in S0iX (Randy Dunlap) - Improve the k_* coefficient for the power allocator governor (Lukasz Luba) - Fix missing const on a sysfs attribute (Rikard Falkeborn) - Remove broken interrupt support on rcar to be replaced by a new one (Niklas Söderlund) - Improve the error code handling at init time on imx8mm (Fabio Estevam) - Compute interval validity once instead at each temperature reading iteration on acerhdf (Daniel Lezcano) - Add r8a779a0 support (Niklas Söderlund) - Add PCI ids for AlderLake PCH and mmio refactoring (Srinivas Pandruvada) - Add RFIM and mailbox support on int340x (Srinivas Pandruvada) - Use macro for temperature calculation on PCH (Sumeet Pawnikar) - Simplify return conditions at probe time on Broadcom (Zheng Yongjun) - Fix workload name on PCH (Srinivas Pandruvada) - Migrate the devfreq cooling device code to the energy model API (Lukasz Luba) - Emit a warning if the thermal_zone_device_update is called without the .get_temp() ops (Daniel Lezcano) - Add critical and hot ops for the thermal zone (Daniel Lezcano) - Remove notification usage when critical is reached on rcar (Daniel Lezcano) - Fix devfreq build when ENERGY_MODEL is not set (Lukasz Luba) * tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (45 commits) thermal/drivers/devfreq_cooling: Fix the build when !ENERGY_MODEL thermal/drivers/rcar: Remove notification usage thermal/core: Add critical and hot ops thermal/core: Emit a warning if the thermal zone is updated without ops drm/panfrost: Register devfreq cooling and attempt to add Energy Model thermal: devfreq_cooling: remove old power model and use EM thermal: devfreq_cooling: add new registration functions with Energy Model thermal: devfreq_cooling: use a copy of device status thermal: devfreq_cooling: change tracing function and arguments thermal: int340x: processor_thermal: Correct workload type name thermal: broadcom: simplify the return expression of bcm2711_thermal_probe() thermal: intel: pch: use macro for temperature calculation thermal: int340x: processor_thermal: Add mailbox driver thermal: int340x: processor_thermal: Add RFIM driver thermal: int340x: processor_thermal: Add AlderLake PCI device id thermal: int340x: processor_thermal: Refactor MMIO interface thermal: rcar_gen3_thermal: Add r8a779a0 support dt-bindings: thermal: rcar-gen3-thermal: Add r8a779a0 support platform/x86/drivers/acerhdf: Check the interval value when it is set platform/x86/drivers/acerhdf: Use module_param_cb to set/get polling interval ...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input updates from Dmitry Torokhov: - support for inhibiting input devices at request from userspace. If a device implements open/close methods, it can also put device into low power state. This is needed, for example, to disable keyboard and touchpad on convertibles when they are transitioned into tablet mode - now that ordinary input devices can be configured for polling mode, dedicated input polling device implementation has been removed - GTCO tablet driver has been removed, as it used problematic custom HID parser, devices are EOL, and there is no interest from the manufacturer - a new driver for Dialog DA7280 haptic chips has been introduced - a new driver for power button on Dell Wyse 3020 - support for eKTF2132 in ektf2127 driver - support for SC2721 and SC2730 in sc27xx-vibra driver - enhancements for Atmel touchscreens, AD7846 touchscreens, Elan touchpads, ADP5589, ST1232 touchscreen, TM2 touchkey drivers - fixes and cleanups to allow clean builds with W=1 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (86 commits) Input: da7280 - fix spelling mistake "sequemce" -> "sequence" Input: cyapa_gen6 - fix out-of-bounds stack access Input: sc27xx - add support for sc2730 and sc2721 dt-bindings: input: Add compatible string for SC2721 and SC2730 dt-bindings: input: Convert sc27xx-vibra.txt to json-schema Input: stmpe - add axis inversion and swapping capability Input: adp5589-keys - do not explicitly control IRQ for wakeup Input: adp5589-keys - do not unconditionally configure as wakeup source Input: ipx4xx-beeper - convert comma to semicolon Input: parkbd - convert comma to semicolon Input: new da7280 haptic driver dt-bindings: input: Add document bindings for DA7280 MAINTAINERS: da7280 updates to the Dialog Semiconductor search terms Input: elantech - fix protocol errors for some trackpoints in SMBus mode Input: elan_i2c - add new trackpoint report type 0x5F Input: elants - document some registers and values Input: atmel_mxt_ts - simplify the return expression of mxt_send_bootloader_cmd() Input: imx_keypad - add COMPILE_TEST support Input: applespi - use new structure for SPI transfer delays Input: synaptics-rmi4 - use new structure for SPI transfer delays ...
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Hans de Goede: "Highlights: - New driver for changing BIOS settings from within Linux on Dell devices. This introduces a new generic sysfs API for this. Lenovo is working on also supporting this API on their devices - New Intel PMT telemetry and crashlog drivers - Support for SW_TABLET_MODE reporting for the acer-wmi and intel-hid drivers - Preparation work for improving support for Microsoft Surface hardware - Various fixes / improvements / quirks for the panasonic-laptop and others" * tag 'platform-drivers-x86-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (81 commits) platform/x86: ISST: Mark mmio_range_devid_0 and mmio_range_devid_1 with static keyword platform/x86: intel-hid: add Rocket Lake ACPI device ID x86/platform: classmate-laptop: add WiFi media button platform/x86: mlx-platform: Fix item counter assignment for MSN2700/ComEx system platform/x86: mlx-platform: Fix item counter assignment for MSN2700, MSN24xx systems tools/power/x86/intel-speed-select: Update version for v5.11 tools/power/x86/intel-speed-select: Account for missing sysfs for die_id tools/power/x86/intel-speed-select: Read TRL from mailbox platform/x86: intel-hid: Do not create SW_TABLET_MODE input-dev when a KIOX010A ACPI dev is present platform/x86: intel-hid: Add alternative method to enable switches platform/x86: intel-hid: Add support for SW_TABLET_MODE platform/x86: intel-vbtn: Fix SW_TABLET_MODE always reporting 1 on some HP x360 models platform/x86: ISST: Change PCI device macros platform/x86: ISST: Allow configurable offset range platform/x86: ISST: Check for unaligned mmio address acer-wireless: send an EV_SYN/SYN_REPORT between state changes platform/x86: dell-wmi-sysman: work around for BIOS bug platform/x86: mlx-platform: remove an unused variable platform/x86: thinkpad_acpi: remove trailing semicolon in macro definition platform/x86: dell-smbios-base: Fix error return code in dell_smbios_init ...
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-stagingLinus Torvalds authored
Pull hwmon updates from Guenter Roeck: "New drivers: - SB-TSI sensors - Lineat Technology LTC2992 - Delta power supplies Q54SJ108A2 - Maxim MAX127 - Corsair PSU - STMicroelectronics PM6764 Voltage Regulator New chip support: - P10 added to fsi/occ driver - NCT6687D added to nct6883 driver - Intel-based Xserves added to applesmc driver - AMD family 19h model 01h added to amd_energy driver And various minor bug fixes and improvements" * tag 'hwmon-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (41 commits) dt-bindings: (hwmon/sbtsi_temp) Add SB-TSI hwmon driver bindings hwmon: (sbtsi) Add documentation hwmon: (sbtsi) Add basic support for SB-TSI sensors hwmon: (iio_hwmon) Drop bogus __refdata annotation hwmon: (xgene) Drop bogus __refdata annotation dt-bindings: hwmon: convert AD ADM1275 bindings to dt-schema hwmon: (occ) Add new temperature sensor type fsi: occ: Add support for P10 dt-bindings: fsi: Add P10 OCC device documentation dt-bindings: hwmon: convert TI ADS7828 bindings to dt-schema dt-bindings: hwmon: convert AD AD741x bindings to dt-schema dt-bindings: hwmon: convert TI INA2xx bindings to dt-schema hwmon: (ltc2992) Fix less than zero comparisons with an unsigned integer hwmon: (pmbus/q54sj108a2) Correct title underline length dt-bindings: hwmon: Add documentation for ltc2992 hwmon: (ltc2992) Add support for GPIOs. hwmon: (ltc2992) Add support hwmon: (pmbus) Driver for Delta power supplies Q54SJ108A2 hwmon: Add driver for STMicroelectronics PM6764 Voltage Regulator hwmon: (nct6683) Support NCT6687D. ...
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