1. 07 7月, 2010 7 次提交
    • C
      arch/tile: Miscellaneous cleanup changes. · 0707ad30
      Chris Metcalf 提交于
      This commit is primarily changes caused by reviewing "sparse"
      and "checkpatch" output on our sources, so is somewhat noisy, since
      things like "printk() -> pr_err()" (or whatever) throughout the
      codebase tend to get tedious to read.  Rather than trying to tease
      apart precisely which things changed due to which type of code
      review, this commit includes various cleanups in the code:
      
      - sparse: Add declarations in headers for globals.
      - sparse: Fix __user annotations.
      - sparse: Using gfp_t consistently instead of int.
      - sparse: removing functions not actually used.
      - checkpatch: Clean up printk() warnings by using pr_info(), etc.;
        also avoid partial-line printks except in bootup code.
        - checkpatch: Use exposed structs rather than typedefs.
        - checkpatch: Change some C99 comments to C89 comments.
      
      In addition, a couple of minor other changes are rolled in
      to this commit:
      
      - Add support for a "raise" instruction to cause SIGFPE, etc., to be raised.
      - Remove some compat code that is unnecessary when we fully eliminate
        some of the deprecated syscalls from the generic syscall ABI.
      - Update the tile_defconfig to reflect current config contents.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      0707ad30
    • C
      arch/tile: Split the icache flush code off to a generic <arch> header. · c78095bd
      Chris Metcalf 提交于
      This code is used in other places in our system than in Linux, so
      to share it we now implement it as an inline function in our low-level
      <arch> headers, and instantiate it in one file in Linux's arch/tile/lib.
      The file is now cacheflush.c and is C code rather than the strangely-named
      and assembler-implemented __invalidate_icache.S.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      c78095bd
    • C
      arch/tile: Fix bug in support for atomic64_xx() ops. · 2db09827
      Chris Metcalf 提交于
      This wasn't properly tested until the perf-event subsystem started
      to get brought up under the tile architecture.
      
      The bug caused bogus atomic64_cmpxchg() values to be returned,
      among other things.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      2db09827
    • C
      arch/tile: Shrink the tile-opcode files considerably. · 863fbac6
      Chris Metcalf 提交于
      The C file (tile-desc_{32,64}.c) was about 300KB before this change,
      and is now shrunk down to 100K.  The original file included support
      for BFD in the binutils toolchain, which is not necessary in the
      kernel; the kernel version only needs to include enough support to
      enable the single-stepper and backtracer.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      863fbac6
    • C
      arch/tile: Add driver to enable access to the user dynamic network. · 9f9c0382
      Chris Metcalf 提交于
      This network (the "UDN") connects all the cpus on the chip in a
      wormhole-routed dynamic network.  Subrectangles of the chip can
      be allocated by a "create" ioctl on /dev/hardwall, and then to access the
      UDN in that rectangle, tasks must perform an "activate" ioctl on that
      same file object after affinitizing themselves to a single cpu in
      the region.  Sending a wormhole-routed message that tries to leave
      that subrectangle causes all activated tasks to receive a SIGILL
      (just as they would if they tried to access the UDN without first
      activating themselves to a hardwall rectangle).
      
      The original submission of this code to LKML had the driver
      instantiated under /proc/tile/hardwall.  Now we just use a character
      device for this, conventionally /dev/hardwall.  Some futures planning
      for the TILE-Gx chip suggests that we may want to have other types of
      devices that share the general model of "bind a task to a cpu, then
      'activate' a file descriptor on a pseudo-device that gives access to
      some hardware resource".  As such, we are using a device rather
      than, for example, a syscall, to set up and activate this code.
      
      As part of this change, the compat_ptr() declaration was fixed and used
      to pass the compat_ioctl argument to the normal ioctl.  So far we limit
      compat code to 2GB, so the difference between zero-extend and sign-extend
      (the latter being correct, eventually) had been overlooked.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NArnd Bergmann <arnd@arndb.de>
      9f9c0382
    • C
      arch/tile: Enable more sophisticated IRQ model for 32-bit chips. · fb702b94
      Chris Metcalf 提交于
      This model is based on the on-chip interrupt model used by the
      TILE-Gx next-generation hardware, and interacts much more cleanly
      with the Linux generic IRQ layer.
      
      The change includes modifications to the Tilera hypervisor, which
      are reflected in the hypervisor headers in arch/tile/include/arch/.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Acked-by: NThomas Gleixner <tglx@linutronix.de>
      fb702b94
    • C
      Move list types from <linux/list.h> to <linux/types.h>. · de5d9bf6
      Chris Metcalf 提交于
      This allows a list_head (or hlist_head, etc.) to be used from places
      that used to be impractical, in particular <asm/processor.h>, which
      used to cause include file recursion: <linux/list.h> includes
      <linux/prefetch.h>, which always includes <asm/processor.h> for the
      prefetch macros, as well as <asm/system.h>, which often includes
      <asm/processor.h> directly or indirectly.
      
      This avoids a lot of painful workaround hackery on the tile
      architecture, where we use a list_head in the thread_struct to chain
      together tasks that are activated on a particular hardwall.
      Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
      Reviewed-by: NMatthew Wilcox <willy@linux.intel.com>
      de5d9bf6
  2. 26 6月, 2010 2 次提交
  3. 12 6月, 2010 27 次提交
  4. 11 6月, 2010 4 次提交