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* kconfig: make allnoconfig disable options behind EMBEDDED and EXPERTJosh Triplett2014-04-076-6/+20
| | | | | | | | | | | | | | | | | | | | | | | "make allnoconfig" exists to ease testing of minimal configurations. Documentation/SubmitChecklist includes a note to test with allnoconfig. This helps catch missing dependencies on common-but-not-required functionality, which might otherwise go unnoticed. However, allnoconfig still leaves many symbols enabled, because they're hidden behind CONFIG_EMBEDDED or CONFIG_EXPERT. For instance, allnoconfig still has CONFIG_PRINTK and CONFIG_BLOCK enabled, so drivers don't typically get build-tested with those disabled. To address this, introduce a new Kconfig option "allnoconfig_y", used on symbols which only exist to hide other symbols. Set it on CONFIG_EMBEDDED (which then selects CONFIG_EXPERT). allnoconfig will then disable all the symbols hidden behind those. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'modules-next-for-linus' of ↵Linus Torvalds2014-04-063-26/+66
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Nothing major: the stricter permissions checking for sysfs broke a staging driver; fix included. Greg KH said he'd take the patch but hadn't as the merge window opened, so it's included here to avoid breaking build" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: staging: fix up speakup kobject mode Use 'E' instead of 'X' for unsigned module taint flag. VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms. kallsyms: fix percpu vars on x86-64 with relocation. kallsyms: generalize address range checking module: LLVMLinux: Remove unused function warning from __param_check macro Fix: module signature vs tracepoints: add new TAINT_UNSIGNED_MODULE module: remove MODULE_GENERIC_TABLE module: allow multiple calls to MODULE_DEVICE_TABLE() per module module: use pr_cont
| * kallsyms: fix percpu vars on x86-64 with relocation.Rusty Russell2014-03-172-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86-64 has a problem: per-cpu variables are actually represented by their absolute offsets within the per-cpu area, but the symbols are not emitted as absolute. Thus kallsyms naively creates them as offsets from _text, meaning their values change if the kernel is relocated (especially noticeable with CONFIG_RANDOMIZE_BASE): $ egrep ' (gdt_|_(stext|_per_cpu_))' /root/kallsyms.nokaslr 0000000000000000 D __per_cpu_start 0000000000004000 D gdt_page 0000000000014280 D __per_cpu_end ffffffff810001c8 T _stext ffffffff81ee53c0 D __per_cpu_offset $ egrep ' (gdt_|_(stext|_per_cpu_))' /root/kallsyms.kaslr1 000000001f200000 D __per_cpu_start 000000001f204000 D gdt_page 000000001f214280 D __per_cpu_end ffffffffa02001c8 T _stext ffffffffa10e53c0 D __per_cpu_offset Making them absolute symbols is the Right Thing, but requires fixes to the relocs tool. So for the moment, we add a --absolute-percpu option which makes them absolute from a kallsyms perspective: $ egrep ' (gdt_|_(stext|_per_cpu_))' /proc/kallsyms # no KASLR 0000000000000000 A __per_cpu_start 000000000000a000 A gdt_page 0000000000013040 A __per_cpu_end ffffffff802001c8 T _stext ffffffff8099b180 D __per_cpu_offset ffffffff809a3000 D __per_cpu_load $ egrep ' (gdt_|_(stext|_per_cpu_))' /proc/kallsyms # With KASLR 0000000000000000 A __per_cpu_start 000000000000a000 A gdt_page 0000000000013040 A __per_cpu_end ffffffff89c001c8 T _stext ffffffff8a39d180 D __per_cpu_offset ffffffff8a3a5000 D __per_cpu_load Based-on-the-original-screenplay-by: Andy Honig <ahonig@google.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Kees Cook <keescook@chromium.org>
| * kallsyms: generalize address range checkingKees Cook2014-03-171-21/+32
| | | | | | | | | | | | | | | | | | This refactors the address range checks to be generalized instead of specific to text range checks, in preparation for other range checks. Also extracts logic for "is the symbol absolute" into a function. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * module: allow multiple calls to MODULE_DEVICE_TABLE() per moduleTom Gundersen2014-03-131-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 78551277e4df5: "Input: i8042 - add PNP modaliases" had a bug, where the second call to MODULE_DEVICE_TABLE() overrode the first resulting in not all the modaliases being exposed. This fixes the problem by including the name of the device_id table in the __mod_*_device_table alias, allowing us to export several device_id tables per module. Suggested-by: Kay Sievers <kay@vrfy.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tom Gundersen <teg@jklm.no> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | checkpatch: don't warn on bitfield spaces around :Joe Perches2014-04-031-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This test prevents code from being aligned around the : for easy visual counting of bitfield lengths. ie: int foo : 1, int bar : 2, int foobar :29; should be acceptable so remove the test. Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: expand parenthesis alignment test to declarations, functions and ↵Joe Perches2014-04-031-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | assignments Currently the parenthesis alignment test works only on misalignments of if statements like if (foo(bar, baz) Expand the test to find misalignments like: static inline int foo(int bar, int baz) and foo(bar, baz); and foo = bar(baz, qux); Expand the $Inline keyword for __inline and __inline__ too. Add $Inline to $Declare so it also matches "static inline <foo>". These checks are only performed with --strict. Signed-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>
* | checkpatch.pl: add check for Change-IdChristopher Covington2014-04-031-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A commit hook for the Gerrit code review server [1] inserts change identifiers so Gerrit can track patches through multiple revisions. These identifiers are noise in the context of the upstream kernel. (Many Gerrit servers are private. Even given a public instance, given only a Change-Id, one must guess which server a change was tracked on. Patches submitted to the Linux kernel mailing lists should be able to stand on their own. If it's truly useful to reference code review on a Gerrit server, a URL is a much clearer way to do so.) Thus, issue an error when a Change-Id line is encountered before the Signed-off-by. 1. https://gerrit.googlesource.com/gerrit/+/master/gerrit-server/src/main/resources/com/google/gerrit/server/tools/root/hooks/commit-msg Signed-off-by: Christopher Covington <cov@codeaurora.org> Cc: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | scripts/checkpatch.pl: __GFP_NOFAIL isn't going awayAndrew Morton2014-04-031-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert commit 7e4915e78992 ("checkpatch: add warning of future __GFP_NOFAIL use"). There are no plans to remove __GFP_NOFAIL. __GFP_NOFAIL exists to a) centralise the retry-allocation-for-ever operation into the core allocator, which is the appropriate implementation site and b) permit us to identify code sites which aren't handling memory exhaustion appropriately. Cc: David Rientjes <rientjes@google.com> Cc: Joe Perches <joe@perches.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: net and drivers/net: warn on missing blank line after variable ↵Joe Perches2014-04-031-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | declaration Networking prefers this style, so warn when it's not used. Networking uses: void foo(int bar) { int baz; code... } not void foo(int bar) { int baz; code... } There are a limited number of false positives when using macros to declare variables like: WARNING: networking uses a blank line after declarations #330: FILE: net/ipv4/inet_hashtables.c:330: + int dif = sk->sk_bound_dev_if; + INET_ADDR_COOKIE(acookie, saddr, daddr) Signed-off-by: Joe Perches <joe@perches.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: improve the compatible vendor matchFlorian Vaussard2014-04-031-5/+5
| | | | | | | | | | | | | | | | | | | | | | Improve the vendor name match in vendor-prefix.txt by only matching the exact vendor name at the beginning of lines. Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: check compatible strings in .c and .h tooFlorian Vaussard2014-04-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | Look for ".compatible = "foo" strings not only in .dts files, but in .c and .h too. Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: fix spurious vendor compatible warningsFlorian Vaussard2014-04-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a compatible string like compatible = "foo"; checkpatch will currently try to find "foo" in vendor-prefixes.txt, which is wrong since the vendor prefix is empty in this specific case. Skip the vendor test if the compatible is not like compatible = "vendor,something"; Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Cc: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: check vendor compatible with dashesFlorian Vaussard2014-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The current vendor compatible check will not match vendors with dashes, like: compatible="asahi-kasei" Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch> Reported-by: Joe Perches <joe@perches.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: improve octal permissions test speedJoe Perches2014-04-031-20/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The current octal permissions test is very slow. When patch ("checkpatch: add checks for constant non-octal permissions") was added, processing time approximately tripled. Regain almost all of the performance by not looping through all the possible functions unless the line contains one of the functions. Signed-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>
* | checkpatch.pl: modify warning message for printk usageYogesh Chaudhari2014-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | Modify warning message when printk is used in a patch. It mentions to use subsystem_dbg instead of netdev_dbg as the first preferred format of logging debug messages. Signed-off-by: Yogesh Chaudhari <mr.yogesh@gmail.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: make "return is not a function" test quieterJoe Perches2014-04-031-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This test is a bit noisy and opinions seem to agree that it should not warn in a lot more situations. It seems people agree that: return (foo || bar); and return foo || bar; are both acceptable style and checkpatch should be silent about them. For now, it warns on parentheses around a simple constant or a single function or a ternary. return (foo); return (foo(bar)); return (foo ? bar : baz); The last ternary test may be quieted in the future. Modify the deparenthesize function to only strip balanced leading and trailing parentheses. Signed-off-by: Joe Perches <joe@perches.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Monam Agarwal <monamagarwal123@gmail.com> Cc: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: ignore networking block comment style first lines in fileJoe Perches2014-04-031-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | It's very common to have normal block comments for the initial comments of a file description preface. So for files in drivers/net and net/ don't emit a warning when the first comment block in the file uses the normal block comment style and not the networking block comment style. Signed-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>
* | checkpatch: use a more consistent function argument styleJoe Perches2014-04-031-9/+20
| | | | | | | | | | | | | | | | | | Instead of array indexing $_, use temporary variables like all the other subroutines in the script use. Signed-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>
* | checkpatch: add test for char * arrays that could be static constJoe Perches2014-04-031-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | static const char* arrays create smaller text as each function call does not have to populate the array. Emit a warning when char *arrays aren't static const and the array is not apparently global by being declared in the first column. Signed-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>
* | checkpatch: fix jiffies comparison and othersJoe Perches2014-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | checkpatch could not distinguish between a variable in a struct named jiffies and the normal jiffies. foo->jiffies would emit a "Comparing jiffies" arning. Update the $Compare variable to do a negative look-behind for "-" when finding a ">" so that a pointer dereference like -> isn't a comparison. Signed-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>
* | checkpatch: avoid sscanf test duplicated messagesJoe Perches2014-04-031-1/+1
| | | | | | | | | | | | | | | | | | Change a test of $dstat to $line to avoid possibly emitting the sscanf warning multiple times. Signed-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>
* | checkpatch: update octal permissions warningJoe Perches2014-04-031-2/+4
| | | | | | | | | | | | | | | | | | When checking permissions, make sure 4 octal digits are used, but allow a single 0 too. Signed-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>
* | checkpatch: warn on uses of __constant_<foo> functionsJoe Perches2014-04-031-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Emit a warning when using any of these __constant_<foo> forms: __constant_cpu_to_be[x] __constant_cpu_to_le[x] __constant_be[x]_to_cpu __constant_le[x]_to_cpu __constant_htons __constant_ntohs Using any of these outside of include/uapi/ isn't preferred as using the function without __constant_ is identical when the argument is a constant. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | checkpatch: add checks for constant non-octal permissionsJoe Perches2014-04-031-2/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | umode_t permissions are sometimes mistakenly written with decimal constants. Verify that numeric permissions are using octal. Add a list of the most commonly used functions and macros that have umode_t permissions and the argument position. Add a $Octal type to $Constant. Allow $LvalOrFunc to be a pointer indirection too. Signed-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>
* | checkpatch: don't warn on some function pointer return stylesJoe Perches2014-04-031-10/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Checks for some function pointer return styles are too strict. Fix them. Multiple spaces after function pointer return types are allowed. int (*foo)(int bar) Spaces after function pointer returns of pointer types are not required. int *(*foo)(int bar) Signed-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>
* | checkpatch: add test for long udelayJoe Perches2014-04-031-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Holger reported: : The macro udelay cannot handle large values because of loss-of-precision. : : IMHO udelay on ARM is broken, because it also cannot work with fast : ARM processors (where bogomips >= 3355, which is in sight now). It's : just not broken enough that someone did something against it ... so : the current kludge is good enough. Until then, warn on long udelay uses. Also fix uses of $line that should have been $herecurr. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Holger Schurig <holgerschurig@gmail.com> Cc: Sujith Manoharan <sujith@msujith.org> Cc: John Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | genksyms: fix typeof() handlingJan Beulich2014-04-037-384/+498
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent increased use of typeof() throughout the tree resulted in a number of symbols (25 in a typical distro config of ours) not getting a proper CRC calculated for them anymore, due to the parser in genksyms not coping with several of these uses (interestingly in the majority of [if not all] cases the problem is due to the use of typeof() in code preceding a certain export, not in the declaration/definition of the exported function/object itself; I wasn't able to find a way to address this more general parser shortcoming). The use of parameter_declaration is a little more relaxed than would be ideal (permitting not just a bare type specification, but also one with identifier), but since the same code is being passed through an actual compiler, there's no apparent risk of allowing through any broken code. Otoh using parameter_declaration instead of the ad hoc "decl_specifier_seq '*'" / "decl_specifier_seq" pair allows all types to be handled rather than just plain ones and pointers to plain ones. Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds2014-04-0210-365/+582
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull devicetree changes from Grant Likely: "Updates to devicetree core code. This branch contains the following notable changes: - add reserved memory binding - make struct device_node a kobject and remove legacy /proc/device-tree - ePAPR conformance fixes - update in-kernel DTC copy to version v1.4.0 - preparatory changes for dynamic device tree overlays - minor bug fixes and documentation changes The most significant change in this branch is the conversion of struct device_node to be a kobject that is exposed via sysfs and removal of the old /proc/device-tree code. This simplifies the device tree handling code and tightens up the lifecycle on device tree nodes. [updated: added fix for dangling select PROC_DEVICETREE]" * tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (29 commits) dt: Remove dangling "select PROC_DEVICETREE" of: Add support for ePAPR "stdout-path" property of: device_node kobject lifecycle fixes of: only scan for reserved mem when fdt present powerpc: add support for reserved memory defined by device tree arm64: add support for reserved memory defined by device tree of: add missing major vendors of: add vendor prefix for SMSC of: remove /proc/device-tree of/selftest: Add self tests for manipulation of properties of: Make device nodes kobjects so they show up in sysfs arm: add support for reserved memory defined by device tree drivers: of: add support for custom reserved memory drivers drivers: of: add initialization code for dynamic reserved memory drivers: of: add initialization code for static reserved memory of: document bindings for reserved-memory nodes Revert "of: fix of_update_property()" kbuild: dtbs_install: new make target ARM: mvebu: Allows to get the SoC ID even without PCI enabled of: Allows to use the PCI translator without the PCI core ...
| * \ Merge remote-tracking branch 'robh/for-next' into devicetree/nextGrant Likely2014-03-313-3/+15
| |\ \
| * \ \ Merge tag 'v3.14-rc5' into HEADGrant Likely2014-03-044-5/+6
| |\ \ \ | | | | | | | | | | | | | | | Linux 3.14-rc5
| * | | | kbuild: dtbs_install: new make targetJason Cooper2014-02-201-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike other build products in the Linux kernel, there is no 'make *install' mechanism to put devicetree blobs in a standard place. This commit adds a new 'dtbs_install' make target which copies all of the dtbs into the INSTALL_DTBS_PATH directory. INSTALL_DTBS_PATH can be set before calling make to change the default install directory. If not set then it defaults to: $INSTALL_PATH/dtbs/$KERNELRELEASE. This is done to keep dtbs from different kernel versions separate until things have settled down. Once the dtbs are stable, and not so strongly linked to the kernel version, the devicetree files will most likely move to their own repo. Users will need to upgrade install scripts at that time. v7: (reworked by Grant Likely) - Moved rules from arch/arm/Makefile to arch/arm/boot/dts/Makefile so that each dtb install could have a separate target and be reported as part of the make output. - Fixed dependency problem to ensure $KERNELRELEASE is calculated before attempting to install - Removed option to call external script. Copying the files should be sufficient and a build system can post-process the install directory. Despite the fact an external script is used for installing the kernel, I don't think that is a pattern that should be encouraged. I would rather see buildroot type tools post process the install directory to rename or move dtb files after installing to a staging directory. - Plus it is easy to add a hook after the fact without blocking the rest of this feature. - Move the helper targets into scripts/Makefile.lib with the rest of the common dtb rules Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Russell King <linux@arm.linux.org.uk> Cc: Rob Herring <robh+dt@kernel.org>
| * | | | Merge branch 'devicetree/dtc' into devicetree/nextGrant Likely2014-02-039-365/+570
| |\ \ \ \ | | | | | | | | | | | | | | | | | | Branch to upgrade DTC toolchain to version 1.4.0
| | * | | | scripts/dtc: Add a script to update to mainline dtc sourceGrant Likely2014-01-212-1/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A very simple script that automates pulling in a newer version of DTC. Not particularly robust, but a whole lot better than doing it by hand every time. Signed-off-by: Grant Likely <grant.likely@linaro.org>
| | * | | | scripts/dtc: Update to upstream version v1.4.0Grant Likely2014-01-216-82/+294
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update to the latest version of dtc with the following notable enhancements and bug fixes: * fdtput: expand fdt if value does not fit * dtc/fdt{get, put}/convert-dtsv0-lexer: convert to new usage helpers * libfdt: Add fdt_next_subnode() to permit easy subnode iteration * utilfdt_read: pass back up the length of data read * util_version: new helper for displaying version info * die: constify format string arg * utilfdt_read_err: use xmalloc funcs * Export fdt_stringlist_contains() * dtc: Drop the '-S is deprecated' warning * dtc/libfdt: sparse fixes * dtc/libfdt: introduce fdt types for annotation by endian checkers * Fix util_is_printable_string * dtc: srcpos_verror() should print to stderr * libfdt: Added missing functions to shared library Shipped bison/flex generated files were built on an Ubuntu 13.10 system. Signed-off-by: Grant Likely <grant.likely@linaro.org>
| | * | | | scripts/dtc: Update shipped files to build with bison 2.7.12Grant Likely2014-01-212-283/+222
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Preparation patch before updating to upstream dtc version 1.4.0. This change only contains the changes caused by a new version of bison on the shipped files. There are no functional changes. The shipped files were build on an Ubuntu 13.10 system Signed-off-by: Grant Likely <grant.likely@linaro.org>
* | | | | | Merge tag 'driver-core-3.15-rc1' of ↵Linus Torvalds2014-04-012-5/+18
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core and sysfs updates from Greg KH: "Here's the big driver core / sysfs update for 3.15-rc1. Lots of kernfs updates to make it useful for other subsystems, and a few other tiny driver core patches. All have been in linux-next for a while" * tag 'driver-core-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (42 commits) Revert "sysfs, driver-core: remove unused {sysfs|device}_schedule_callback_owner()" kernfs: cache atomic_write_len in kernfs_open_file numa: fix NULL pointer access and memory leak in unregister_one_node() Revert "driver core: synchronize device shutdown" kernfs: fix off by one error. kernfs: remove duplicate dir.c at the top dir x86: align x86 arch with generic CPU modalias handling cpu: add generic support for CPU feature based module autoloading sysfs: create bin_attributes under the requested group driver core: unexport static function create_syslog_header firmware: use power efficient workqueue for unloading and aborting fw load firmware: give a protection when map page failed firmware: google memconsole driver fixes firmware: fix google/gsmi duplicate efivars_sysfs_init() drivers/base: delete non-required instances of include <linux/init.h> kernfs: fix kernfs_node_from_dentry() ACPI / platform: drop redundant ACPI_HANDLE check kernfs: fix hash calculation in kernfs_rename_ns() kernfs: add CONFIG_KERNFS sysfs, kobject: add sysfs wrapper for kernfs_enable_ns() ...
| * \ \ \ \ \ Merge 3.14-rc5 into driver-core-nextGreg Kroah-Hartman2014-03-021-0/+1
| |\ \ \ \ \ \ | | | |_|/ / / | | |/| | | | | | | | | | | We want the fixes in here.
| * | | | | | x86: align x86 arch with generic CPU modalias handlingArd Biesheuvel2014-02-181-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The x86 CPU feature modalias handling existed before it was reimplemented generically. This patch aligns the x86 handling so that it (a) reuses some more code that is now generic; (b) uses the generic format for the modalias module metadata entry, i.e., it now uses 'cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:,XXXX,YYYY' instead of the 'x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:,XXXX,YYYY' that was used before. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | | | | cpu: add generic support for CPU feature based module autoloadingArd Biesheuvel2014-02-182-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for advertising optional CPU features over udev using the modalias, and for declaring compatibility with/dependency upon such a feature in a module. The mapping between feature numbers and actual features should be provided by the architecture in a file called <asm/cpufeature.h> which exports the following functions/macros: - cpu_feature(FEAT), a preprocessor macro that maps token FEAT to a numeric index; - bool cpu_have_feature(n), returning whether this CPU has support for feature #n; - MAX_CPU_FEATURES, an upper bound for 'n' in the previous function. The feature can then be enabled by setting CONFIG_GENERIC_CPU_AUTOPROBE for the architecture. For instance, a module that registers its module init function using module_cpu_feature_match(FEAT_X, module_init_function) will be probed automatically when the CPU's support for the 'FEAT_X' feature is advertised over udev, and will only allow the module to be loaded by hand if the 'FEAT_X' feature is supported. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | | | | Merge branch 'x86-asmlinkage-for-linus' of ↵Linus Torvalds2014-03-316-4/+71
|\ \ \ \ \ \ \ | |_|_|_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 LTO changes from Peter Anvin: "More infrastructure work in preparation for link-time optimization (LTO). Most of these changes is to make sure symbols accessed from assembly code are properly marked as visible so the linker doesn't remove them. My understanding is that the changes to support LTO are still not upstream in binutils, but are on the way there. This patchset should conclude the x86-specific changes, and remaining patches to actually enable LTO will be fed through the Kbuild tree (other than keeping up with changes to the x86 code base, of course), although not necessarily in this merge window" * 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits) Kbuild, lto: Handle basic LTO in modpost Kbuild, lto: Disable LTO for asm-offsets.c Kbuild, lto: Add a gcc-ld script to let run gcc as ld Kbuild, lto: add ld-version and ld-ifversion macros Kbuild, lto: Drop .number postfixes in modpost Kbuild, lto, workaround: Don't warn for initcall_reference in modpost lto: Disable LTO for sys_ni lto: Handle LTO common symbols in module loader lto, workaround: Add workaround for initcall reordering lto: Make asmlinkage __visible x86, lto: Disable LTO for the x86 VDSO initconst, x86: Fix initconst mistake in ts5500 code initconst: Fix initconst mistake in dcdbas asmlinkage: Make trace_hardirqs_on/off_caller visible asmlinkage, x86: Fix 32bit memcpy for LTO asmlinkage Make __stack_chk_failed and memcmp visible asmlinkage: Mark rwsem functions that can be called from assembler asmlinkage asmlinkage: Make main_extable_sort_needed visible asmlinkage, mutex: Mark __visible asmlinkage: Make trace_hardirq visible ...
| * | | | | | Kbuild, lto: Handle basic LTO in modpostAndi Kleen2014-02-131-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Don't warn about LTO marker symbols. modpost runs before the linker, so the module is not necessarily LTOed yet. - Don't complain about .gnu.lto* sections Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-13-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | | | Kbuild, lto: Disable LTO for asm-offsets.cAndi Kleen2014-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The asm-offset.c technique to fish data out of the assembler file does not work with LTO. Just disable for the asm-offset.c build. Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-11-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | | | Kbuild, lto: Add a gcc-ld script to let run gcc as ldAndi Kleen2014-02-131-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For LTO we need to run the link step with gcc, not ld. Since there are a lot of linker options passed to it, add a gcc-ld wrapper that wraps them as -Wl, Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-10-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | | | Kbuild, lto: add ld-version and ld-ifversion macrosAndi Kleen2014-02-132-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To check the linker version. Used by the LTO makefile. Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-9-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | | | Kbuild, lto: Drop .number postfixes in modpostAndi Kleen2014-02-132-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LTO turns all global symbols effectively into statics. This has the side effect that they all have a .NUMBER postfix to make them unique. In modpost drop this postfix because it confuses it. Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-8-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | | | Kbuild, lto, workaround: Don't warn for initcall_reference in modpostAndi Kleen2014-02-131-0/+4
| | |_|/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reference is discarded, but can cause warnings when it refers to exit. Ignore for now. This is a workaround and can be removed once we get rid of -fno-toplevel-reorder Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1391846481-31491-7-git-send-email-ak@linux.intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* | | | | | revert "kallsyms: fix absolute addresses for kASLR"Andrew Morton2014-03-101-1/+2
| |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert the recently applied 0f55159d091c ("kallsyms: fix absolute addresses for kASLR"). Kees said : This got NAKed, please don't apply -- this patch works for x86 and : ARM, but may cause problems for others: : : https://lkml.org/lkml/2014/2/24/718 It appears that Kees will be fixing all this up for 3.15. Cc: Andy Honig <ahonig@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds2014-03-071-0/+13
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fixes from Russell King: "A number of ARM updates for -rc, covering mostly ARM specific code, but with one change to modpost.c to allow Thumb section mismatches to be detected. ARM changes include reporting when an attempt is made to boot a LPAE kernel on hardware which does not support LPAE, rather than just being silent about it. A number of other minor fixes are included too" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 7992/1: boot: compressed: ignore bswapsdi2.S ARM: 7991/1: sa1100: fix compile problem on Collie ARM: fix noMMU kallsyms symbol filtering ARM: 7980/1: kernel: improve error message when LPAE config doesn't match CPU ARM: 7964/1: Detect section mismatches in thumb relocations ARM: 7963/1: mm: report both sections from PMD
| * | | | | ARM: 7964/1: Detect section mismatches in thumb relocationsDavid A. Long2014-02-181-0/+13
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add processing for normally encountered thumb relocation types so that section mismatches will be detected. Comment from Rusty Russell follows: Happiest for this to go through an ARM tree, so: Signed-off-by: David A. Long <dave.long@linaro.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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