1. 08 2月, 2014 4 次提交
    • T
      cgroup: rename cgroup_subsys->subsys_id to ->id · aec25020
      Tejun Heo 提交于
      It's no longer referenced outside cgroup core, so renaming is easy.
      Let's rename it for consistency & brevity.
      
      This patch is pure rename.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NLi Zefan <lizefan@huawei.com>
      aec25020
    • T
      cgroup: clean up cgroup_subsys names and initialization · 073219e9
      Tejun Heo 提交于
      cgroup_subsys is a bit messier than it needs to be.
      
      * The name of a subsys can be different from its internal identifier
        defined in cgroup_subsys.h.  Most subsystems use the matching name
        but three - cpu, memory and perf_event - use different ones.
      
      * cgroup_subsys_id enums are postfixed with _subsys_id and each
        cgroup_subsys is postfixed with _subsys.  cgroup.h is widely
        included throughout various subsystems, it doesn't and shouldn't
        have claim on such generic names which don't have any qualifier
        indicating that they belong to cgroup.
      
      * cgroup_subsys->subsys_id should always equal the matching
        cgroup_subsys_id enum; however, we require each controller to
        initialize it and then BUG if they don't match, which is a bit
        silly.
      
      This patch cleans up cgroup_subsys names and initialization by doing
      the followings.
      
      * cgroup_subsys_id enums are now postfixed with _cgrp_id, and each
        cgroup_subsys with _cgrp_subsys.
      
      * With the above, renaming subsys identifiers to match the userland
        visible names doesn't cause any naming conflicts.  All non-matching
        identifiers are renamed to match the official names.
      
        cpu_cgroup -> cpu
        mem_cgroup -> memory
        perf -> perf_event
      
      * controllers no longer need to initialize ->subsys_id and ->name.
        They're generated in cgroup core and set automatically during boot.
      
      * Redundant cgroup_subsys declarations removed.
      
      * While updating BUG_ON()s in cgroup_init_early(), convert them to
        WARN()s.  BUGging that early during boot is stupid - the kernel
        can't print anything, even through serial console and the trap
        handler doesn't even link stack frame properly for back-tracing.
      
      This patch doesn't introduce any behavior changes.
      
      v2: Rebased on top of fe1217c4 ("net: net_cls: move cgroupfs
          classid handling into core").
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NNeil Horman <nhorman@tuxdriver.com>
      Acked-by: N"David S. Miller" <davem@davemloft.net>
      Acked-by: N"Rafael J. Wysocki" <rjw@rjwysocki.net>
      Acked-by: NMichal Hocko <mhocko@suse.cz>
      Acked-by: NPeter Zijlstra <peterz@infradead.org>
      Acked-by: NAristeu Rozanski <aris@redhat.com>
      Acked-by: NIngo Molnar <mingo@redhat.com>
      Acked-by: NLi Zefan <lizefan@huawei.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Balbir Singh <bsingharora@gmail.com>
      Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Serge E. Hallyn <serue@us.ibm.com>
      Cc: Vivek Goyal <vgoyal@redhat.com>
      Cc: Thomas Graf <tgraf@suug.ch>
      073219e9
    • T
      cgroup: drop module support · 3ed80a62
      Tejun Heo 提交于
      With module supported dropped from net_prio, no controller is using
      cgroup module support.  None of actual resource controllers can be
      built as a module and we aren't gonna add new controllers which don't
      control resources.  This patch drops module support from cgroup.
      
      * cgroup_[un]load_subsys() and cgroup_subsys->module removed.
      
      * As there's no point in distinguishing IS_BUILTIN() and IS_MODULE(),
        cgroup_subsys.h now uses IS_ENABLED() directly.
      
      * enum cgroup_subsys_id now exactly matches the list of enabled
        controllers as ordered in cgroup_subsys.h.
      
      * cgroup_subsys[] is now a contiguously occupied array.  Size
        specification is no longer necessary and dropped.
      
      * for_each_builtin_subsys() is removed and for_each_subsys() is
        updated to not require any locking.
      
      * module ref handling is removed from rebind_subsystems().
      
      * Module related comments dropped.
      
      v2: Rebased on top of fe1217c4 ("net: net_cls: move cgroupfs
          classid handling into core").
      
      v3: Added {} around the if (need_forkexit_callback) block in
          cgroup_post_fork() for readability as suggested by Li.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NLi Zefan <lizefan@huawei.com>
      3ed80a62
    • T
      cgroup: make CONFIG_CGROUP_NET_PRIO bool and drop unnecessary init_netclassid_cgroup() · af636337
      Tejun Heo 提交于
      net_prio is the only cgroup which is allowed to be built as a module.
      The savings from allowing one controller to be built as a module are
      tiny especially given that cgroup module support itself adds quite a
      bit of complexity.
      
      Given that none of other controllers has much chance of being made a
      module and that we're unlikely to add new modular controllers, the
      added complexity is simply not justifiable.
      
      As a first step to drop cgroup module support, this patch changes the
      config option to bool from tristate and drops module related code from
      it.
      
      Also, while an earlier commit fe1217c4 ("net: net_cls: move
      cgroupfs classid handling into core") dropped module support from
      net_cls cgroup, it retained a call to cgroup_load_subsys(), which is
      noop for built-in controllers.  Drop it along with
      init_netclassid_cgroup().
      
      v2: Removed modular version of task_netprioidx() in
          include/net/netprio_cgroup.h as suggested by Li Zefan.
      
      v3: Rebased on top of fe1217c4 ("net: net_cls: move cgroupfs
          classid handling into core").  net_cls cgroup part is mostly
          dropped except for removal of init_netclassid_cgroup().
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NNeil Horman <nhorman@tuxdriver.com>
      Acked-by: N"David S. Miller" <davem@davemloft.net>
      Acked-by: NLi Zefan <lizefan@huawei.com>
      Cc: Thomas Graf <tgraf@suug.ch>
      af636337
  2. 03 2月, 2014 16 次提交
    • L
      Linus 3.14-rc1 · 38dbfb59
      Linus Torvalds 提交于
      38dbfb59
    • L
      Merge branch 'parisc-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux · 69048e01
      Linus Torvalds 提交于
      Pull parisc updates from Helge Deller:
       "The three major changes in this patchset is a implementation for
        flexible userspace memory maps, cache-flushing fixes (again), and a
        long-discussed ABI change to make EWOULDBLOCK the same value as
        EAGAIN.
      
        parisc has been the only platform where we had EWOULDBLOCK != EAGAIN
        to keep HP-UX compatibility.  Since we will probably never implement
        full HP-UX support, we prefer to drop this compatibility to make it
        easier for us with Linux userspace programs which mostly never checked
        for both values.  We don't expect major fall-outs because of this
        change, and if we face some, we will simply rebuild the necessary
        applications in the debian archives"
      
      * 'parisc-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
        parisc: add flexible mmap memory layout support
        parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc
        parisc: convert uapi/asm/stat.h to use native types only
        parisc: wire up sched_setattr and sched_getattr
        parisc: fix cache-flushing
        parisc/sti_console: prefer Linux fonts over built-in ROM fonts
      69048e01
    • M
      hpfs: optimize quad buffer loading · 1c0b8a7a
      Mikulas Patocka 提交于
      HPFS needs to load 4 consecutive 512-byte sectors when accessing the
      directory nodes or bitmaps.  We can't switch to 2048-byte block size
      because files are allocated in the units of 512-byte sectors.
      
      Previously, the driver would allocate a 2048-byte area using kmalloc,
      copy the data from four buffers to this area and eventually copy them
      back if they were modified.
      
      In the current implementation of the buffer cache, buffers are allocated
      in the pagecache.  That means that 4 consecutive 512-byte buffers are
      stored in consecutive areas in the kernel address space.  So, we don't
      need to allocate extra memory and copy the content of the buffers there.
      
      This patch optimizes the code to avoid copying the buffers.  It checks
      if the four buffers are stored in contiguous memory - if they are not,
      it falls back to allocating a 2048-byte area and copying data there.
      Signed-off-by: NMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      1c0b8a7a
    • M
      hpfs: remember free space · 2cbe5c76
      Mikulas Patocka 提交于
      Previously, hpfs scanned all bitmaps each time the user asked for free
      space using statfs.  This patch changes it so that hpfs scans the
      bitmaps only once, remembes the free space and on next invocation of
      statfs it returns the value instantly.
      
      New versions of wine are hammering on the statfs syscall very heavily,
      making some games unplayable when they're stored on hpfs, with load
      times in minutes.
      
      This should be backported to the stable kernels because it fixes
      user-visible problem (excessive level load times in wine).
      Signed-off-by: NMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
      Cc: stable@vger.kernel.org
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2cbe5c76
    • H
      parisc: add flexible mmap memory layout support · 9dabf60d
      Helge Deller 提交于
      Add support for the flexible mmap memory layout (as described in
      http://lwn.net/Articles/91829). This is especially very interesting on
      parisc since we currently only support 32bit userspace (even with a
      64bit Linux kernel).
      Signed-off-by: NHelge Deller <deller@gmx.de>
      9dabf60d
    • G
      parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc · f5a408d5
      Guy Martin 提交于
      On Linux, only parisc uses a different value for EWOULDBLOCK which
      causes a lot of troubles for applications not checking for both values.
      Since the hpux compat is long dead, make EWOULDBLOCK behave the same as
      all other architectures.
      Signed-off-by: NGuy Martin <gmsoft@tuxicoman.be>
      Signed-off-by: NHelge Deller <deller@gmx.de>
      f5a408d5
    • H
      parisc: convert uapi/asm/stat.h to use native types only · 9391bc77
      Helge Deller 提交于
      The stat.h header file is exported to userspace. Some userspace
      applications failed to compile due to missing/unknown types, so we
      better convert it to use native types only (like it's done on other
      architectures too).
      Signed-off-by: NHelge Deller <deller@gmx.de>
      9391bc77
    • H
      parisc: wire up sched_setattr and sched_getattr · 998bbb2f
      Helge Deller 提交于
      Signed-off-by: NHelge Deller <deller@gmx.de>
      998bbb2f
    • H
      parisc: fix cache-flushing · 57737c49
      Helge Deller 提交于
      This commit:
      f8dae006: parisc: Ensure full cache coherency for kmap/kunmap
      caused negative caching side-effects, e.g. hanging processes with expect and
      too many inequivalent alias messages from flush_dcache_page() on Debian 5 systems.
      
      This patch now partly reverts it and has been in production use on our debian buildd
      makeservers since a week without any major problems.
      Signed-off-by: NHelge Deller <deller@gmx.de>
      Signed-off-by: NJohn David Anglin <dave.anglin@bell.net>
      Cc: stable@vger.kernel.org # v3.9+
      Signed-off-by: NHelge Deller <deller@gmx.de>
      57737c49
    • H
      parisc/sti_console: prefer Linux fonts over built-in ROM fonts · 8a10bc9d
      Helge Deller 提交于
      The built-in ROM fonts lack many necessary ASCII characters, which is
      why it makes sens to prefer the Linux fonts instead if they are
      available.  This makes consoles on STI graphics cards which are not
      supported by the stifb driver (e.g. Visualize FXe) looks much nicer.
      Signed-off-by: NHelge Deller <deller@gmx.de>
      Cc: stable@vger.kernel.org # v3.13
      8a10bc9d
    • L
      Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging · 602456bf
      Linus Torvalds 提交于
      Pull hwmon kconfig fixes from Jean Delvare.
      
      * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
        hwmon: Fix SENSORS_TMP102 dependencies to eliminate build errors
        hwmon: Fix SENSORS_LM75 dependencies to eliminate build errors
      602456bf
    • L
      Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux · 7b383bef
      Linus Torvalds 提交于
      Pull SLAB changes from Pekka Enberg:
       "Random bug fixes that have accumulated in my inbox over the past few
        months"
      
      * 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
        mm: Fix warning on make htmldocs caused by slab.c
        mm: slub: work around unneeded lockdep warning
        mm: sl[uo]b: fix misleading comments
        slub: Fix possible format string bug.
        slub: use lockdep_assert_held
        slub: Fix calculation of cpu slabs
        slab.h: remove duplicate kmalloc declaration and fix kernel-doc warnings
      7b383bef
    • L
      Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux · 87af5e5c
      Linus Torvalds 提交于
      Pull turbostat updates from Len Brown.
      
      * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
        tools/power turbostat: introduce -s to dump counters
        tools/power turbostat: remove unused command line option
        turbostat: Add option to report joules consumed per sample
        turbostat: run on HSX
        turbostat: Add a .gitignore to ignore the compiled turbostat binary
        turbostat: Clean up error handling; disambiguate error messages; use err and errx
        turbostat: Factor out common function to open file and exit on failure
        turbostat: Add a helper to parse a single int out of a file
        turbostat: Check return value of fscanf
        turbostat: Use GCC's CPUID functions to support PIC
        turbostat: Don't attempt to printf an off_t with %zx
        turbostat: Don't put unprocessed uapi headers in the include path
      87af5e5c
    • L
      Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · e4c0da21
      Linus Torvalds 提交于
      Pull ARM SoC fixes from Olof Johansson:
       "Here's a set of patches for (hopefully) -rc1.  Some of them are fixes,
        but a good number of them also do things such as enable new drivers in
        the defconfigs for platforms that have such devices, increases
        coverage of the multiplatform defconfig and some DTS changes that
        plumbs up some of the devices that now have bindings and driver
        support.
      
        The commit dates are recent; we've mostly collected these fixes in the
        last few days but I also had to rebuild the branch yesterday to sort
        out some internal conflicts which reset the timestamps.  The changes
        should have been tested by each platform maintainer already (and few
        of them have cross-platform impact) so I'm personally not too
        concerned by it at this time"
      
      * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
        ARM: multi_v7_defconfig: remove redundant entries and re-enable TI_EDMA
        ARM: multi_v7_defconfig: add mvebu drivers
        clocksource: kona: Add basic use of external clock
        drivers: bus: fix CCI driver kcalloc call parameters swap
        ARM: dts: bcm28155-ap: Fix Card Detection GPIO
        ARM: multi_v7_defconfig: Select CONFIG_AT803X_PHY
        ARM: keystone: config: fix build warning when CONFIG_DMADEVICES is not set
        MAINTAINERS: ARM: SiRF: use regex patterns to involve all SiRF drivers
        ARM: dts: zynq: Add SDHCI nodes
        ARM: hisi: don't select SMP
        ARM: tegra: rebuild tegra_defconfig to add DEBUG_FS
        ARM: multi_v7: copy most options from tegra_defconfig
        ARM: iop32x: fix power off handling for the EM7210 board
        ARM: integrator: restore static map on the CP
        ARM: msm_defconfig: Enable MSM clock drivers
        ARM: dts: msm: Add clock controller nodes and hook into uart
        ARM: OMAP4+: move errata initialization to omap4_pm_init_early
        ARM: OMAP4460: cpuidle: Extend PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD on cpuidle
        ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
        ARM: shmobile: r8a7790.dtsi: ficx i2c[0-3] clock reference
        ...
      e4c0da21
    • J
      hwmon: Fix SENSORS_TMP102 dependencies to eliminate build errors · 632007e2
      Jean Delvare 提交于
      Similar to what was done for the lm75 driver.
      
      Add depends on THERMAL since that is what provides the
      register/unregister functions above, but only if THERMAL_OF was
      selected as this is an optional feature of the driver.
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
      Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
      632007e2
    • J
      hwmon: Fix SENSORS_LM75 dependencies to eliminate build errors · 920130a9
      Jean Delvare 提交于
      Based on an earlier attempt by Randy Dunlap.
      
      Fix SENSORS_LM75 dependencies to eliminate build errors:
      
      drivers/built-in.o: In function `lm75_remove':
      lm75.c:(.text+0x12bd8c): undefined reference to `thermal_zone_of_sensor_unregister'
      drivers/built-in.o: In function `lm75_probe':
      lm75.c:(.text+0x12c123): undefined reference to `thermal_zone_of_sensor_register'
      
      Add depends on THERMAL since that is what provides the
      register/unregister functions above, but only if THERMAL_OF was
      selected as this is an optional feature of the driver.
      Signed-off-by: NJean Delvare <khali@linux-fr.org>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Acked-by: NEduardo Valentin <eduardo.valentin@ti.com>
      Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
      920130a9
  3. 02 2月, 2014 9 次提交
  4. 01 2月, 2014 11 次提交