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  1. 30 Sep, 2009 21 commits
  3. 29 Sep, 2009 10 commits
    • Jerome Glisse's avatar
      drm/radeon/kms: Convert R520 to new init path and associated cleanup · f0ed1f65
      Jerome Glisse authored 
      Convert the r520 asic support to new init path, change are smaller than
previous one as most of the architecture is now in place and more code
sharing can happen btw various asics.
Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
      f0ed1f65
    • Jerome Glisse's avatar
      drm/radeon/kms: Convert RV515 to new init path and associated cleanup · d39c3b89
      Jerome Glisse authored 
      Convert the rv515 asic support to new init path also add an explanation
in radeon.h about the new init path. There is also few cleanups
associated with this change (others asic calling rv515 helper
functions).
Signed-off-by: default avatarJerome Glisse <jglisse@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
      d39c3b89
    • Mikael Pettersson's avatar
      drm: fix radeon DRM warnings when !CONFIG_DEBUG_FS · f4e45d02
      Mikael Pettersson authored 
      Compiling the radeon DRM driver with !CONFIG_DEBUG_FS
throws the following warnings:

drivers/gpu/drm/radeon/radeon_ttm.c: In function 'radeon_ttm_debugfs_init':
drivers/gpu/drm/radeon/radeon_ttm.c:714: warning: unused variable 'i'
drivers/gpu/drm/radeon/radeon_ttm.c: At top level:
drivers/gpu/drm/radeon/radeon_ttm.c:692: warning: 'radeon_mem_types_list' defined but not used
drivers/gpu/drm/radeon/radeon_ttm.c:693: warning: 'radeon_mem_types_names' defined but not used

Fix: move these variables inside the #if defined(CONFIG_DEBUG_FS)
block in radeon_ttm_debugsfs_init(), which is the only place using them.
Signed-off-by: default avatarMikael Pettersson <mikpe@it.uu.se>
Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
      f4e45d02
    • Mikael Pettersson's avatar
      drm: fix drm_fb_helper warning when !CONFIG_MAGIC_SYSRQ · bea1d35b
      Mikael Pettersson authored 
      Compiling DRM throws the following warning if MAGIC_SYSRQ is disabled:

drivers/gpu/drm/drm_fb_helper.c:101: warning: 'sysrq_drm_fb_helper_restore_op' defined but not used

Fix: place sysrq_drm_fb_helper_restore_op and associated
definitions inside #ifdef CONFIG_MAGIC_SYSRQ.
Signed-off-by: default avatarMikael Pettersson <mikpe@it.uu.se>
Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
      bea1d35b
    • Tejun Heo's avatar
      percpu: make allocation failures more verbose · f2badb0c
      Tejun Heo authored 
      Warn and dump stack when percpu allocation fails.  percpu allocator is
still young and unchecked NULL percpu pointer usage can result in
random memory corruption when combined with the pointer shifting in
access macros.  Allocation failures should be rare and the warning
message will be disabled after certain times.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      f2badb0c
    • Tejun Heo's avatar
      percpu: make pcpu_setup_first_chunk() failures more verbose · 635b75fc
      Tejun Heo authored 
      The parameters to pcpu_setup_first_chunk() come from different sources
depending on architecture and can be quite complex.  The function runs
various sanity checks on the parameters and triggers BUG() if
something isn't right.  However, this is very early during the boot
and not reporting exactly what the problem is makes debugging even
harder.

Add PCPU_SETUP_BUG() macro which prints out enough information about
the parameters.  As the macro still puts separate BUG() for each
check, it won't lose any information even on the situations where only
the program counter can be retrieved.

While at it, also bump pcpu_dump_alloc_info() message to KERN_INFO so
that it's visible on the console if boot fails to complete.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      635b75fc
    • Tejun Heo's avatar
      percpu: make embedding first chunk allocator check vmalloc space size · 6ea529a2
      Tejun Heo authored 
      Embedding first chunk allocator maintains the distances between units
in the vmalloc area and thus needs vmalloc space to be larger than the
maximum distances between units; otherwise, it wouldn't be able to
create any dynamic chunks.  This patch makes the embedding first chunk
allocator check vmalloc space size and if the maximum distance between
units is larger than 75% of it, print warning and, if page mapping
allocator is available, fail initialization so that the system falls
back onto it.

This should work around percpu allocation failure problems on certain
sparc64 configurations where distances between NUMA nodes are larger
than the vmalloc area and makes percpu allocator more robust for
future configurations.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      6ea529a2
    • Tejun Heo's avatar
      sparc64: implement page mapping percpu first chunk allocator · a70c6913
      Tejun Heo authored 
      Implement page mapping percpu first chunk allocator as a fallback to
the embedding allocator.  The next patch will make the embedding
allocator check distances between units to determine whether it fits
within the vmalloc area so that this fallback can be used on such
cases.

sparc64 currently has relatively small vmalloc area which makes it
impossible to create any dynamic chunks on certain configurations
leading to percpu allocation failures.  This and the next patch should
allow those configurations to keep working until proper solution is
found.

While at it, mark pcpu_cpu_distance() with __init.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
      a70c6913
    • Tejun Heo's avatar
      percpu: make pcpu_build_alloc_info() clear static buffers · fb59e72e
      Tejun Heo authored 
      pcpu_build_alloc_info() may be called multiple times when percpu is
falling back to different first chunk allocator.  Make it clear static
buffers so that they don't contain values from previous runs.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      fb59e72e
    • Tejun Heo's avatar
      percpu: fix unit_map[] verification in pcpu_setup_first_chunk() · ffe0d5a5
      Tejun Heo authored 
      pcpu_setup_first_chunk() incorrectly used NR_CPUS as the impossible
unit number while unit number can equal and go over NR_CPUS with
sparse unit map.  This triggers BUG_ON() spuriously on machines which
have non-power-of-two number of cpus.  Use UINT_MAX instead.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reported-and-tested-by: default avatarTony Vroon <tony@linx.net>
      ffe0d5a5
  5. 28 Sep, 2009 9 commits