1. 28 10月, 2010 1 次提交
    • M
      ARM: 6466/1: implement flush_icache_all for the rest of the CPUs · c8c90860
      Mika Westerberg 提交于
      Commit 81d11955 ("ARM: 6405/1: Handle __flush_icache_all for
      CONFIG_SMP_ON_UP") added a new function to struct cpu_cache_fns:
      flush_icache_all(). It also implemented this for v6 and v7 but not
      for v5 and backwards. Without the function pointer in place, we
      will be calling wrong cache functions.
      
      For example with ep93xx we get following:
      
          Unable to handle kernel paging request at virtual address ee070f38
          pgd = c0004000
          [ee070f38] *pgd=00000000
          Internal error: Oops: 80000005 [#1] PREEMPT
          last sysfs file:
          Modules linked in:
          CPU: 0    Not tainted  (2.6.36+ #1)
          PC is at 0xee070f38
          LR is at __dma_alloc+0x11c/0x2d0
          pc : [<ee070f38>]    lr : [<c0032c8c>]    psr: 60000013
          sp : c581bde0  ip : 00000000  fp : c0472000
          r10: c0472000  r9 : 000000d0  r8 : 00020000
          r7 : 0001ffff  r6 : 00000000  r5 : c0472400  r4 : c5980000
          r3 : c03ab7e0  r2 : 00000000  r1 : c59a0000  r0 : c5980000
          Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
          Control: c000717f  Table: c0004000  DAC: 00000017
          Process swapper (pid: 1, stack limit = 0xc581a270)
          [<c0032c8c>] (__dma_alloc+0x11c/0x2d0)
          [<c0032e5c>] (dma_alloc_writecombine+0x1c/0x24)
          [<c0204148>] (ep93xx_pcm_preallocate_dma_buffer+0x44/0x60)
          [<c02041c0>] (ep93xx_pcm_new+0x5c/0x88)
          [<c01ff188>] (snd_soc_instantiate_cards+0x8a8/0xbc0)
          [<c01ff59c>] (soc_probe+0xfc/0x134)
          [<c01adafc>] (platform_drv_probe+0x18/0x1c)
          [<c01acca4>] (driver_probe_device+0xb0/0x16c)
          [<c01ac284>] (bus_for_each_drv+0x48/0x84)
          [<c01ace90>] (device_attach+0x50/0x68)
          [<c01ac0f8>] (bus_probe_device+0x24/0x44)
          [<c01aad7c>] (device_add+0x2fc/0x44c)
          [<c01adfa8>] (platform_device_add+0x104/0x15c)
          [<c0015eb8>] (simone_init+0x60/0x94)
          [<c0021410>] (do_one_initcall+0xd0/0x1a4)
      
      __dma_alloc() calls (inlined) __dma_alloc_buffer() which ends up
      calling dmac_flush_range(). Now since the entries in the
      arm920_cache_fns are shifted by one, we jump into address 0xee070f38
      which is actually next instruction after the arm920_cache_fns
      structure.
      
      So implement flush_icache_all() for the rest of the supported CPUs
      using a generic 'invalidate I cache' instruction.
      Signed-off-by: NMika Westerberg <mika.westerberg@iki.fi>
      Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      c8c90860
  2. 15 2月, 2010 2 次提交
  3. 14 12月, 2009 1 次提交
  4. 29 11月, 2008 1 次提交
  5. 07 8月, 2008 2 次提交
  6. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4