1. 10 Oct, 2018 2 commits
    • Randy Dunlap's avatar
      hexagon: modify ffs() and fls() to return int · 7a2df42a
      Randy Dunlap authored
      [ Upstream commit 5c41aaad ]
      
      Building drivers/mtd/nand/raw/nandsim.c on arch/hexagon/ produces a
      printk format build warning.  This is due to hexagon's ffs() being
      coded as returning long instead of int.
      
      Fix the printk format warning by changing all of hexagon's ffs() and
      fls() functions to return int instead of long.  The variables that
      they return are already int instead of long.  This return type
      matches the return type in <asm-generic/bitops/>.
      
      ../drivers/mtd/nand/raw/nandsim.c: In function 'init_nandsim':
      ../drivers/mtd/nand/raw/nandsim.c:760:2: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long int' [-Wformat]
      
      There are no ffs() or fls() allmodconfig build errors after making this
      change.
      Signed-off-by: 's avatarRandy Dunlap <rdunlap@infradead.org>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: linux-hexagon@vger.kernel.org
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Patch-mainline: linux-kernel @ 07/22/2018, 16:03
      Signed-off-by: 's avatarRichard Kuo <rkuo@codeaurora.org>
      Signed-off-by: 's avatarSasha Levin <alexander.levin@microsoft.com>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      7a2df42a
    • Randy Dunlap's avatar
      arch/hexagon: fix kernel/dma.c build warning · 2eb3072b
      Randy Dunlap authored
      [ Upstream commit 200f351e27f014fcbf69b544b0b4b72aeaf45fd3 ]
      
      Fix build warning in arch/hexagon/kernel/dma.c by casting a void *
      to unsigned long to match the function parameter type.
      
      ../arch/hexagon/kernel/dma.c: In function 'arch_dma_alloc':
      ../arch/hexagon/kernel/dma.c:51:5: warning: passing argument 2 of 'gen_pool_add' makes integer from pointer without a cast [enabled by default]
      ../include/linux/genalloc.h:112:19: note: expected 'long unsigned int' but argument is of type 'void *'
      Signed-off-by: 's avatarRandy Dunlap <rdunlap@infradead.org>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Rich Felker <dalias@libc.org>
      Cc: linux-sh@vger.kernel.org
      Patch-mainline: linux-kernel @ 07/20/2018, 20:17
      [rkuo@codeaurora.org: fixed architecture name]
      Signed-off-by: 's avatarRichard Kuo <rkuo@codeaurora.org>
      Signed-off-by: 's avatarSasha Levin <alexander.levin@microsoft.com>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      2eb3072b
  2. 20 Jun, 2018 2 commits
  3. 02 Nov, 2017 3 commits
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX license identifier to uapi header files with a license · e2be04c7
      Greg Kroah-Hartman authored
      Many user space API headers have licensing information, which is either
      incomplete, badly formatted or just a shorthand for referring to the
      license under which the file is supposed to be.  This makes it hard for
      compliance tools to determine the correct license.
      
      Update these files with an SPDX license identifier.  The identifier was
      chosen based on the license information in the file.
      
      GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
      identifier with the added 'WITH Linux-syscall-note' exception, which is
      the officially assigned exception identifier for the kernel syscall
      exception:
      
         NOTE! This copyright does *not* cover user programs that use kernel
         services by normal system calls - this is merely considered normal use
         of the kernel, and does *not* fall under the heading of "derived work".
      
      This exception makes it possible to include GPL headers into non GPL
      code, without confusing license compliance tools.
      
      Headers which have either explicit dual licensing or are just licensed
      under a non GPL license are updated with the corresponding SPDX
      identifier and the GPLv2 with syscall exception identifier.  The format
      is:
              ((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
      
      SPDX license identifiers are a legally binding shorthand, which can be
      used instead of the full boiler plate text.  The update does not remove
      existing license information as this has to be done on a case by case
      basis and the copyright holders might have to be consulted. This will
      happen in a separate step.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.  See the previous patch in this series for the
      methodology of how this patch was researched.
      Reviewed-by: 's avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: 's avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: 's avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      e2be04c7
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX license identifier to uapi header files with no license · 6f52b16c
      Greg Kroah-Hartman authored
      Many user space API headers are missing licensing information, which
      makes it hard for compliance tools to determine the correct license.
      
      By default are files without license information under the default
      license of the kernel, which is GPLV2.  Marking them GPLV2 would exclude
      them from being included in non GPLV2 code, which is obviously not
      intended. The user space API headers fall under the syscall exception
      which is in the kernels COPYING file:
      
         NOTE! This copyright does *not* cover user programs that use kernel
         services by normal system calls - this is merely considered normal use
         of the kernel, and does *not* fall under the heading of "derived work".
      
      otherwise syscall usage would not be possible.
      
      Update the files which contain no license information with an SPDX
      license identifier.  The chosen identifier is 'GPL-2.0 WITH
      Linux-syscall-note' which is the officially assigned identifier for the
      Linux syscall exception.  SPDX license identifiers are a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.  See the previous patch in this series for the
      methodology of how this patch was researched.
      Reviewed-by: 's avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: 's avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: 's avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      6f52b16c
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman authored
      Many source files in the tree are missing licensing information, which
      makes it harder for compliance tools to determine the correct license.
      
      By default all files without license information are under the default
      license of the kernel, which is GPL version 2.
      
      Update the files which contain no license information with the 'GPL-2.0'
      SPDX license identifier.  The SPDX identifier is a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.
      
      How this work was done:
      
      Patches were generated and checked against linux-4.14-rc6 for a subset of
      the use cases:
       - file had no licensing information it it.
       - file was a */uapi/* one with no licensing information in it,
       - file was a */uapi/* one with existing licensing information,
      
      Further patches will be generated in subsequent months to fix up cases
      where non-standard license headers were used, and references to license
      had to be inferred by heuristics based on keywords.
      
      The analysis to determine which SPDX License Identifier to be applied to
      a file was done in a spreadsheet of side by side results from of the
      output of two independent scanners (ScanCode & Windriver) producing SPDX
      tag:value files created by Philippe Ombredanne.  Philippe prepared the
      base worksheet, and did an initial spot review of a few 1000 files.
      
      The 4.13 kernel was the starting point of the analysis with 60,537 files
      assessed.  Kate Stewart did a file by file comparison of the scanner
      results in the spreadsheet to determine which SPDX license identifier(s)
      to be applied to the file. She confirmed any determination that was not
      immediately clear with lawyers working with the Linux Foundation.
      
      Criteria used to select files for SPDX license identifier tagging was:
       - Files considered eligible had to be source code files.
       - Make and config files were included as candidates if they contained >5
         lines of source
       - File already had some variant of a license header in it (even if <5
         lines).
      
      All documentation files were explicitly excluded.
      
      The following heuristics were used to determine which SPDX license
      identifiers to apply.
      
       - when both scanners couldn't find any license traces, file was
         considered to have no license information in it, and the top level
         COPYING file license applied.
      
         For non */uapi/* files that summary was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0                                              11139
      
         and resulted in the first patch in this series.
      
         If that file was a */uapi/* path one, it was "GPL-2.0 WITH
         Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0 WITH Linux-syscall-note                        930
      
         and resulted in the second patch in this series.
      
       - if a file had some form of licensing information in it, and was one
         of the */uapi/* ones, it was denoted with the Linux-syscall-note if
         any GPL family license was found in the file or had no licensing in
         it (per prior point).  Results summary:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|------
         GPL-2.0 WITH Linux-syscall-note                       270
         GPL-2.0+ WITH Linux-syscall-note                      169
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
         LGPL-2.1+ WITH Linux-syscall-note                      15
         GPL-1.0+ WITH Linux-syscall-note                       14
         ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
         LGPL-2.0+ WITH Linux-syscall-note                       4
         LGPL-2.1 WITH Linux-syscall-note                        3
         ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
         ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
      
         and that resulted in the third patch in this series.
      
       - when the two scanners agreed on the detected license(s), that became
         the concluded license(s).
      
       - when there was disagreement between the two scanners (one detected a
         license but the other didn't, or they both detected different
         licenses) a manual inspection of the file occurred.
      
       - In most cases a manual inspection of the information in the file
         resulted in a clear resolution of the license that should apply (and
         which scanner probably needed to revisit its heuristics).
      
       - When it was not immediately clear, the license identifier was
         confirmed with lawyers working with the Linux Foundation.
      
       - If there was any question as to the appropriate license identifier,
         the file was flagged for further research and to be revisited later
         in time.
      
      In total, over 70 hours of logged manual review was done on the
      spreadsheet to determine the SPDX license identifiers to apply to the
      source files by Kate, Philippe, Thomas and, in some cases, confirmation
      by lawyers working with the Linux Foundation.
      
      Kate also obtained a third independent scan of the 4.13 code base from
      FOSSology, and compared selected files where the other two scanners
      disagreed against that SPDX file, to see if there was new insights.  The
      Windriver scanner is based on an older version of FOSSology in part, so
      they are related.
      
      Thomas did random spot checks in about 500 files from the spreadsheets
      for the uapi headers and agreed with SPDX license identifier in the
      files he inspected. For the non-uapi files Thomas did random spot checks
      in about 15000 files.
      
      In initial set of patches against 4.14-rc6, 3 files were found to have
      copy/paste license identifier errors, and have been fixed to reflect the
      correct identifier.
      
      Additionally Philippe spent 10 hours this week doing a detailed manual
      inspection and review of the 12,461 patched files from the initial patch
      version early this week with:
       - a full scancode scan run, collecting the matched texts, detected
         license ids and scores
       - reviewing anything where there was a license detected (about 500+
         files) to ensure that the applied SPDX license was correct
       - reviewing anything where there was no detection but the patch license
         was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
         SPDX license was correct
      
      This produced a worksheet with 20 files needing minor correction.  This
      worksheet was then exported into 3 different .csv files for the
      different types of files to be modified.
      
      These .csv files were then reviewed by Greg.  Thomas wrote a script to
      parse the csv files and add the proper SPDX tag to the file, in the
      format that the file expected.  This script was further refined by Greg
      based on the output to detect more types of files automatically and to
      distinguish between header and source .c files (which need different
      comment types.)  Finally Greg ran the script using the .csv files to
      generate the patches.
      Reviewed-by: 's avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: 's avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: 's avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  4. 25 Aug, 2017 1 commit
    • Jiri Slaby's avatar
      futex: Remove duplicated code and fix undefined behaviour · 30d6e0a4
      Jiri Slaby authored
      There is code duplicated over all architecture's headers for
      futex_atomic_op_inuser. Namely op decoding, access_ok check for uaddr,
      and comparison of the result.
      
      Remove this duplication and leave up to the arches only the needed
      assembly which is now in arch_futex_atomic_op_inuser.
      
      This effectively distributes the Will Deacon's arm64 fix for undefined
      behaviour reported by UBSAN to all architectures. The fix was done in
      commit 5f16a046 (arm64: futex: Fix undefined behaviour with
      FUTEX_OP_OPARG_SHIFT usage). Look there for an example dump.
      
      And as suggested by Thomas, check for negative oparg too, because it was
      also reported to cause undefined behaviour report.
      
      Note that s390 removed access_ok check in d12a2970 ("s390/uaccess:
      remove pointless access_ok() checks") as access_ok there returns true.
      We introduce it back to the helper for the sake of simplicity (it gets
      optimized away anyway).
      Signed-off-by: 's avatarJiri Slaby <jslaby@suse.cz>
      Signed-off-by: 's avatarThomas Gleixner <tglx@linutronix.de>
      Acked-by: 's avatarRussell King <rmk+kernel@armlinux.org.uk>
      Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
      Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> [s390]
      Acked-by: Chris Metcalf <cmetcalf@mellanox.com> [for tile]
      Reviewed-by: 's avatarDarren Hart (VMware) <dvhart@infradead.org>
      Reviewed-by: Will Deacon <will.deacon@arm.com> [core/arm64]
      Cc: linux-mips@linux-mips.org
      Cc: Rich Felker <dalias@libc.org>
      Cc: linux-ia64@vger.kernel.org
      Cc: linux-sh@vger.kernel.org
      Cc: peterz@infradead.org
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Max Filippov <jcmvbkbc@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: sparclinux@vger.kernel.org
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: linux-s390@vger.kernel.org
      Cc: linux-arch@vger.kernel.org
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: linux-hexagon@vger.kernel.org
      Cc: Helge Deller <deller@gmx.de>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: linux-snps-arc@lists.infradead.org
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: linux-xtensa@linux-xtensa.org
      Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
      Cc: openrisc@lists.librecores.org
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: Stafford Horne <shorne@gmail.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: linux-parisc@vger.kernel.org
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: linux-alpha@vger.kernel.org
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: linuxppc-dev@lists.ozlabs.org
      Cc: "David S. Miller" <davem@davemloft.net>
      Link: http://lkml.kernel.org/r/20170824073105.3901-1-jslaby@suse.cz
      30d6e0a4
  5. 17 Aug, 2017 1 commit
  6. 10 Aug, 2017 1 commit
    • Peter Zijlstra's avatar
      locking/atomic: Fix atomic_set_release() for 'funny' architectures · 9d664c0a
      Peter Zijlstra authored
      Those architectures that have a special atomic_set implementation also
      need a special atomic_set_release(), because for the very same reason
      WRITE_ONCE() is broken for them, smp_store_release() is too.
      
      The vast majority is architectures that have spinlock hash based atomic
      implementation except hexagon which seems to have a hardware 'feature'.
      
      The spinlock based atomics should be SC, that is, none of them appear to
      place extra barriers in atomic_cmpxchg() or any of the other SC atomic
      primitives and therefore seem to rely on their spinlock implementation
      being SC (I did not fully validate all that).
      
      Therefore, the normal atomic_set() is SC and can be used at
      atomic_set_release().
      Signed-off-by: 's avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Acked-by: Chris Metcalf <cmetcalf@mellanox.com> [for tile]
      Cc: Boqun Feng <boqun.feng@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Will Deacon <will.deacon@arm.com>
      Cc: davem@davemloft.net
      Cc: james.hogan@imgtec.com
      Cc: jejb@parisc-linux.org
      Cc: rkuo@codeaurora.org
      Cc: vgupta@synopsys.com
      Link: http://lkml.kernel.org/r/20170609110506.yod47flaav3wgoj5@hirez.programming.kicks-ass.netSigned-off-by: 's avatarIngo Molnar <mingo@kernel.org>
      9d664c0a
  7. 09 Jul, 2017 1 commit
    • Masahiro Yamada's avatar
      hexagon: move generic-y of exported headers to uapi/asm/Kbuild · e4c694a3
      Masahiro Yamada authored
      Since commit fcc8487d ("uapi: export all headers under uapi
      directories"), all (and only) headers under uapi directories are
      exported, but asm-generic wrappers are still exceptions.
      
      To complete de-coupling the uapi from kernel headers, move generic-y
      of exported headers to uapi/asm/Kbuild.
      
      With this change, "make headers_install" will just need to parse
      uapi/asm/Kbuild to build up exported headers.
      
      Also, move "generic-y += kprobes.h" up in order to keep the entries
      sorted.
      Signed-off-by: Masahiro Yamada's avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      e4c694a3
  8. 06 Jul, 2017 1 commit
  9. 28 Jun, 2017 4 commits
  10. 11 Jun, 2017 1 commit
  11. 04 Jun, 2017 1 commit
  12. 10 May, 2017 1 commit
    • Nicolas Dichtel's avatar
      uapi: export all headers under uapi directories · fcc8487d
      Nicolas Dichtel authored
      Regularly, when a new header is created in include/uapi/, the developer
      forgets to add it in the corresponding Kbuild file. This error is usually
      detected after the release is out.
      
      In fact, all headers under uapi directories should be exported, thus it's
      useless to have an exhaustive list.
      
      After this patch, the following files, which were not exported, are now
      exported (with make headers_install_all):
      asm-arc/kvm_para.h
      asm-arc/ucontext.h
      asm-blackfin/shmparam.h
      asm-blackfin/ucontext.h
      asm-c6x/shmparam.h
      asm-c6x/ucontext.h
      asm-cris/kvm_para.h
      asm-h8300/shmparam.h
      asm-h8300/ucontext.h
      asm-hexagon/shmparam.h
      asm-m32r/kvm_para.h
      asm-m68k/kvm_para.h
      asm-m68k/shmparam.h
      asm-metag/kvm_para.h
      asm-metag/shmparam.h
      asm-metag/ucontext.h
      asm-mips/hwcap.h
      asm-mips/reg.h
      asm-mips/ucontext.h
      asm-nios2/kvm_para.h
      asm-nios2/ucontext.h
      asm-openrisc/shmparam.h
      asm-parisc/kvm_para.h
      asm-powerpc/perf_regs.h
      asm-sh/kvm_para.h
      asm-sh/ucontext.h
      asm-tile/shmparam.h
      asm-unicore32/shmparam.h
      asm-unicore32/ucontext.h
      asm-x86/hwcap2.h
      asm-xtensa/kvm_para.h
      drm/armada_drm.h
      drm/etnaviv_drm.h
      drm/vgem_drm.h
      linux/aspeed-lpc-ctrl.h
      linux/auto_dev-ioctl.h
      linux/bcache.h
      linux/btrfs_tree.h
      linux/can/vxcan.h
      linux/cifs/cifs_mount.h
      linux/coresight-stm.h
      linux/cryptouser.h
      linux/fsmap.h
      linux/genwqe/genwqe_card.h
      linux/hash_info.h
      linux/kcm.h
      linux/kcov.h
      linux/kfd_ioctl.h
      linux/lightnvm.h
      linux/module.h
      linux/nbd-netlink.h
      linux/nilfs2_api.h
      linux/nilfs2_ondisk.h
      linux/nsfs.h
      linux/pr.h
      linux/qrtr.h
      linux/rpmsg.h
      linux/sched/types.h
      linux/sed-opal.h
      linux/smc.h
      linux/smc_diag.h
      linux/stm.h
      linux/switchtec_ioctl.h
      linux/vfio_ccw.h
      linux/wil6210_uapi.h
      rdma/bnxt_re-abi.h
      
      Note that I have removed from this list the files which are generated in every
      exported directories (like .install or .install.cmd).
      
      Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all
      subdirs with a pure makefile command.
      
      For the record, note that exported files for asm directories are a mix of
      files listed by:
       - include/uapi/asm-generic/Kbuild.asm;
       - arch/<arch>/include/uapi/asm/Kbuild;
       - arch/<arch>/include/asm/Kbuild.
      Signed-off-by: 's avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
      Acked-by: 's avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Acked-by: 's avatarRussell King <rmk+kernel@armlinux.org.uk>
      Acked-by: 's avatarMark Salter <msalter@redhat.com>
      Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
      Signed-off-by: Masahiro Yamada's avatarMasahiro Yamada <yamada.masahiro@socionext.com>
      fcc8487d
  13. 26 Apr, 2017 1 commit
  14. 25 Apr, 2017 1 commit
  15. 14 Apr, 2017 1 commit
    • Nicolai Stange's avatar
      hexagon/time: Set ->min_delta_ticks and ->max_delta_ticks · a60a9fb8
      Nicolai Stange authored
      In preparation for making the clockevents core NTP correction aware,
      all clockevent device drivers must set ->min_delta_ticks and
      ->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
      clockevent device's rate is going to change dynamically and thus, the
      ratio of ns to ticks ceases to stay invariant.
      
      Make the hexagon arch's clockevent driver initialize these fields
      properly.
      
      This patch alone doesn't introduce any change in functionality as the
      clockevents core still looks exclusively at the (untouched) ->min_delta_ns
      and ->max_delta_ns. As soon as this has changed, a followup patch will
      purge the initialization of ->min_delta_ns and ->max_delta_ns from this
      driver.
      
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
      Cc: Richard Cochran <richardcochran@gmail.com>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Stephen Boyd <sboyd@codeaurora.org>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: linux-hexagon@vger.kernel.org
      Acked-by: 's avatarRichard Kuo <rkuo@codeaurora.org>
      Signed-off-by: 's avatarNicolai Stange <nicstange@gmail.com>
      Signed-off-by: 's avatarJohn Stultz <john.stultz@linaro.org>
      a60a9fb8
  16. 28 Mar, 2017 1 commit
  17. 09 Mar, 2017 1 commit
  18. 06 Mar, 2017 2 commits
  19. 03 Mar, 2017 1 commit
    • Ingo Molnar's avatar
      sched/headers: Move task->mm handling methods to <linux/sched/mm.h> · 68e21be2
      Ingo Molnar authored
      Move the following task->mm helper APIs into a new header file,
      <linux/sched/mm.h>, to further reduce the size and complexity
      of <linux/sched.h>.
      
      Here are how the APIs are used in various kernel files:
      
        # mm_alloc():
        arch/arm/mach-rpc/ecard.c
        fs/exec.c
        include/linux/sched/mm.h
        kernel/fork.c
      
        # __mmdrop():
        arch/arc/include/asm/mmu_context.h
        include/linux/sched/mm.h
        kernel/fork.c
      
        # mmdrop():
        arch/arm/mach-rpc/ecard.c
        arch/m68k/sun3/mmu_emu.c
        arch/x86/mm/tlb.c
        drivers/gpu/drm/amd/amdkfd/kfd_process.c
        drivers/gpu/drm/i915/i915_gem_userptr.c
        drivers/infiniband/hw/hfi1/file_ops.c
        drivers/vfio/vfio_iommu_spapr_tce.c
        fs/exec.c
        fs/proc/base.c
        fs/proc/task_mmu.c
        fs/proc/task_nommu.c
        fs/userfaultfd.c
        include/linux/mmu_notifier.h
        include/linux/sched/mm.h
        kernel/fork.c
        kernel/futex.c
        kernel/sched/core.c
        mm/khugepaged.c
        mm/ksm.c
        mm/mmu_context.c
        mm/mmu_notifier.c
        mm/oom_kill.c
        virt/kvm/kvm_main.c
      
        # mmdrop_async_fn():
        include/linux/sched/mm.h
      
        # mmdrop_async():
        include/linux/sched/mm.h
        kernel/fork.c
      
        # mmget_not_zero():
        fs/userfaultfd.c
        include/linux/sched/mm.h
        mm/oom_kill.c
      
        # mmput():
        arch/arc/include/asm/mmu_context.h
        arch/arc/kernel/troubleshoot.c
        arch/frv/mm/mmu-context.c
        arch/powerpc/platforms/cell/spufs/context.c
        arch/sparc/include/asm/mmu_context_32.h
        drivers/android/binder.c
        drivers/gpu/drm/etnaviv/etnaviv_gem.c
        drivers/gpu/drm/i915/i915_gem_userptr.c
        drivers/infiniband/core/umem.c
        drivers/infiniband/core/umem_odp.c
        drivers/infiniband/core/uverbs_main.c
        drivers/infiniband/hw/mlx4/main.c
        drivers/infiniband/hw/mlx5/main.c
        drivers/infiniband/hw/usnic/usnic_uiom.c
        drivers/iommu/amd_iommu_v2.c
        drivers/iommu/intel-svm.c
        drivers/lguest/lguest_user.c
        drivers/misc/cxl/fault.c
        drivers/misc/mic/scif/scif_rma.c
        drivers/oprofile/buffer_sync.c
        drivers/vfio/vfio_iommu_type1.c
        drivers/vhost/vhost.c
        drivers/xen/gntdev.c
        fs/exec.c
        fs/proc/array.c
        fs/proc/base.c
        fs/proc/task_mmu.c
        fs/proc/task_nommu.c
        fs/userfaultfd.c
        include/linux/sched/mm.h
        kernel/cpuset.c
        kernel/events/core.c
        kernel/events/uprobes.c
        kernel/exit.c
        kernel/fork.c
        kernel/ptrace.c
        kernel/sys.c
        kernel/trace/trace_output.c
        kernel/tsacct.c
        mm/memcontrol.c
        mm/memory.c
        mm/mempolicy.c
        mm/migrate.c
        mm/mmu_notifier.c
        mm/nommu.c
        mm/oom_kill.c
        mm/process_vm_access.c
        mm/rmap.c
        mm/swapfile.c
        mm/util.c
        virt/kvm/async_pf.c
      
        # mmput_async():
        include/linux/sched/mm.h
        kernel/fork.c
        mm/oom_kill.c
      
        # get_task_mm():
        arch/arc/kernel/troubleshoot.c
        arch/powerpc/platforms/cell/spufs/context.c
        drivers/android/binder.c
        drivers/gpu/drm/etnaviv/etnaviv_gem.c
        drivers/infiniband/core/umem.c
        drivers/infiniband/core/umem_odp.c
        drivers/infiniband/hw/mlx4/main.c
        drivers/infiniband/hw/mlx5/main.c
        drivers/infiniband/hw/usnic/usnic_uiom.c
        drivers/iommu/amd_iommu_v2.c
        drivers/iommu/intel-svm.c
        drivers/lguest/lguest_user.c
        drivers/misc/cxl/fault.c
        drivers/misc/mic/scif/scif_rma.c
        drivers/oprofile/buffer_sync.c
        drivers/vfio/vfio_iommu_type1.c
        drivers/vhost/vhost.c
        drivers/xen/gntdev.c
        fs/proc/array.c
        fs/proc/base.c
        fs/proc/task_mmu.c
        include/linux/sched/mm.h
        kernel/cpuset.c
        kernel/events/core.c
        kernel/exit.c
        kernel/fork.c
        kernel/ptrace.c
        kernel/sys.c
        kernel/trace/trace_output.c
        kernel/tsacct.c
        mm/memcontrol.c
        mm/memory.c
        mm/mempolicy.c
        mm/migrate.c
        mm/mmu_notifier.c
        mm/nommu.c
        mm/util.c
      
        # mm_access():
        fs/proc/base.c
        include/linux/sched/mm.h
        kernel/fork.c
        mm/process_vm_access.c
      
        # mm_release():
        arch/arc/include/asm/mmu_context.h
        fs/exec.c
        include/linux/sched/mm.h
        include/uapi/linux/sched.h
        kernel/exit.c
        kernel/fork.c
      Acked-by: 's avatarLinus Torvalds <torvalds@linux-foundation.org>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: 's avatarIngo Molnar <mingo@kernel.org>
      68e21be2
  20. 02 Mar, 2017 5 commits
  21. 28 Feb, 2017 2 commits
  22. 01 Feb, 2017 1 commit
    • Frederic Weisbecker's avatar
      sched/cputime: Remove generic asm headers · b672592f
      Frederic Weisbecker authored
      cputime_t is now only used by two architectures:
      
      	* powerpc (when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y)
      	* s390
      
      And since the core doesn't use it anymore, we don't need any arch support
      from the others. So we can remove their stub implementations.
      
      A final cleanup would be to provide an efficient pure arch
      implementation of cputime_to_nsec() for s390 and powerpc and finally
      remove include/linux/cputime.h .
      Signed-off-by: 's avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Stanislaw Gruszka <sgruszka@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Link: http://lkml.kernel.org/r/1485832191-26889-36-git-send-email-fweisbec@gmail.comSigned-off-by: 's avatarIngo Molnar <mingo@kernel.org>
      b672592f
  23. 26 Jan, 2017 1 commit
  24. 24 Jan, 2017 2 commits
    • Bart Van Assche's avatar
      treewide: Consolidate get_dma_ops() implementations · 815dd187
      Bart Van Assche authored
      Introduce a new architecture-specific get_arch_dma_ops() function
      that takes a struct bus_type * argument. Add get_dma_ops() in
      <linux/dma-mapping.h>.
      Signed-off-by: 's avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: 's avatarDoug Ledford <dledford@redhat.com>
      815dd187
    • Bart Van Assche's avatar
      treewide: Constify most dma_map_ops structures · 5299709d
      Bart Van Assche authored
      Most dma_map_ops structures are never modified. Constify these
      structures such that these can be write-protected. This patch
      has been generated as follows:
      
      git grep -l 'struct dma_map_ops' |
        xargs -d\\n sed -i \
          -e 's/struct dma_map_ops/const struct dma_map_ops/g' \
          -e 's/const struct dma_map_ops {/struct dma_map_ops {/g' \
          -e 's/^const struct dma_map_ops;$/struct dma_map_ops;/' \
          -e 's/const const struct dma_map_ops /const struct dma_map_ops /g';
      sed -i -e 's/const \(struct dma_map_ops intel_dma_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops intel_dma_ops');
      sed -i -e 's/const \(struct dma_map_ops dma_iommu_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops' | grep ^arch/powerpc);
      sed -i -e '/^struct vmd_dev {$/,/^};$/ s/const \(struct dma_map_ops[[:blank:]]dma_ops;\)/\1/' \
             -e '/^static void vmd_setup_dma_ops/,/^}$/ s/const \(struct dma_map_ops \*dest\)/\1/' \
             -e 's/const \(struct dma_map_ops \*dest = \&vmd->dma_ops\)/\1/' \
          drivers/pci/host/*.c
      sed -i -e '/^void __init pci_iommu_alloc(void)$/,/^}$/ s/dma_ops->/intel_dma_ops./' arch/ia64/kernel/pci-dma.c
      sed -i -e 's/static const struct dma_map_ops sn_dma_ops/static struct dma_map_ops sn_dma_ops/' arch/ia64/sn/pci/pci_dma.c
      sed -i -e 's/(const struct dma_map_ops \*)//' drivers/misc/mic/bus/vop_bus.c
      Signed-off-by: 's avatarBart Van Assche <bart.vanassche@sandisk.com>
      Reviewed-by: 's avatarChristoph Hellwig <hch@lst.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: 's avatarDoug Ledford <dledford@redhat.com>
      5299709d
  25. 25 Dec, 2016 1 commit
  26. 24 Dec, 2016 1 commit