This project is mirrored from https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git. Pull mirroring updated .
  1. 14 Apr, 2006 1 commit
    • David Brownell's avatar
      [PATCH] dma doc updates · 21440d31
      David Brownell authored
      
      
      This updates the DMA API documentation to address a few issues:
      
       - The dma_map_sg() call results are used like pci_map_sg() results:
         using sg_dma_address() and sg_dma_len().  That's not wholly obvious
         to folk reading _only_ the "new" DMA-API.txt writeup.
      
       - Buffers allocated by dma_alloc_coherent() may not be completely
         free of coherency concerns ... some CPUs also have write buffers
         that may need to be flushed.
      
       - Cacheline coherence issues are now mentioned as being among issues
         which affect dma buffers, and complicate/prevent using of static and
         (especially) stack based buffers with the DMA calls.
      
      I don't think many drivers currently need to worry about flushing write
      buffers, but I did hit it with one SOC using external SDRAM for DMA
      descriptors:  without explicit writebuffer flushing, the on-chip DMA
      controller accessed descriptors before the CPU completed the writes.
      
      Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      21440d31
  2. 10 Sep, 2005 1 commit
  3. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      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