1. 14 12月, 2011 4 次提交
  2. 11 8月, 2011 1 次提交
  3. 04 8月, 2011 1 次提交
  4. 19 7月, 2011 2 次提交
  5. 28 6月, 2011 1 次提交
  6. 08 4月, 2011 1 次提交
  7. 24 3月, 2011 6 次提交
  8. 23 3月, 2011 1 次提交
    • D
      IB: Increase DMA max_segment_size on Mellanox hardware · 7f9e5c48
      David Dillow 提交于
      By default, each device is assumed to be able only handle 64 KB chunks
      during DMA. By giving the segment size a larger value, the block layer
      will coalesce more S/G entries together for SRP, allowing larger
      requests with the same sg_tablesize setting.  The block layer is the
      only direct user of it, though a few IOMMU drivers reference it as
      well for their *_map_sg coalescing code. pci-gart_64 on x86, and a
      smattering on on sparc, powerpc, and ia64.
      
      Since other IB protocols could potentially see larger segments with
      this, let's check those:
      
       - iSER is fine, because you limit your maximum request size to 512
         KB, so we'll never overrun the page vector in struct iser_page_vec
         (128 entries currently). It is independent of the DMA segment size,
         and handles multi-page segments already.
      
       - IPoIB is fine, as it maps each page individually, and doesn't use
         ib_dma_map_sg().
      
       - RDS appears to do the right thing and has no dependencies on DMA
         segment size, but I don't claim to have done a complete audit.
      
       - NFSoRDMA and 9p are OK -- they do not use ib_dma_map_sg(), so they
         doesn't care about the coalescing.
      
       - Lustre's ko2iblnd does not care about coalescing -- it properly
         walks the returned sg list.
      
      This patch ups the value on Mellanox hardware to 1 GB, which matches
      reported firmware limits on mlx4.
      Signed-off-by: NDavid Dillow <dillowda@ornl.gov>
      Signed-off-by: NRoland Dreier <roland@purestorage.com>
      7f9e5c48
  9. 29 1月, 2011 1 次提交
  10. 13 1月, 2011 1 次提交
  11. 29 9月, 2010 1 次提交
  12. 25 8月, 2010 3 次提交
  13. 16 7月, 2010 1 次提交
    • J
      drivers/net/mlx4: Use %pV, pr_<level>, printk_once · 0a645e80
      Joe Perches 提交于
      Remove near duplication of format string constants by using the newly
      introduced vsprintf extention %pV to reduce text by 20k or so.
      
      $ size drivers/net/mlx4/built-in.o*
         text	   data	    bss	    dec	    hex	filename
       161367	   1866	  48784	 212017	  33c31	drivers/net/mlx4/built-in.o
       142621	   1866	  46248	 190735	  2e90f	drivers/net/mlx4/built-in.o.new
      
      Use printk_once as appropriate.
      Convert printks to pr_<level>, some bare printks now use pr_cont.
      Remove now unused #define PFX.
      Signed-off-by: NJoe Perches <joe@perches.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      0a645e80
  14. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  15. 19 3月, 2010 1 次提交
  16. 08 1月, 2010 1 次提交
  17. 07 1月, 2010 1 次提交
  18. 15 10月, 2009 1 次提交
  19. 08 10月, 2009 1 次提交
  20. 06 9月, 2009 3 次提交
    • Y
      mlx4_core: Avoid double free_icms · 1af92e2a
      Yevgeny Petrilin 提交于
      On the error path of mlx4_init_hca(), mlx4_close_hca() is called,
      followed by mlx4_free_icms() and mlx4_UNMAP_FA().  But both those
      functions are also called from mlx4_close_hca(), which leads to a
      double free.
      Signed-off-by: NYevgeny Petrilin <yevgenyp@mellanox.co.il>
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      1af92e2a
    • R
      mlx4_core: Allocate and map sufficient ICM memory for EQ context · fa0681d2
      Roland Dreier 提交于
      The current implementation allocates a single host page for EQ context
      memory, which was OK when we only allocated a few EQs.  However, since
      we now allocate an EQ for each CPU core, this patch removes the
      hard-coded limit (which we exceed with 4 KB pages and 128 byte EQ
      context entries with 32 CPUs) and uses the same ICM table code as all
      other context tables, which ends up simplifying the code quite a bit
      while fixing the problem.
      
      This problem was actually hit in practice on a dual-socket Nehalem box
      with 16 real hardware threads and sufficiently odd ACPI tables that it
      shows on boot
      
          SMP: Allowing 32 CPUs, 16 hotplug CPUs
      
      so num_possible_cpus() ends up 32, and mlx4 ends up creating 33 MSI-X
      interrupts and 33 EQs.  This mlx4 bug means that mlx4 can't even
      initialize at all on this quite mainstream system.
      
      Cc: <stable@kernel.org>
      Reported-by: NEli Cohen <eli@mellanox.co.il>
      Tested-by: NChristoph Lameter <cl@linux-foundation.org>
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      fa0681d2
    • R
      mlx4_core: Use pci_request_regions() · a01df0fe
      Roland Dreier 提交于
      The old code used two calls to pci_request_region() to get the two BARs
      for the mlx4 device, for no particularly good reason.  Clean up the code
      a little by converting this to a single call to pci_request_regions().
      Signed-off-by: NRoland Dreier <rolandd@cisco.com>
      a01df0fe
  21. 07 7月, 2009 2 次提交
  22. 28 5月, 2009 1 次提交
  23. 22 4月, 2009 1 次提交
  24. 07 4月, 2009 2 次提交
  25. 19 3月, 2009 1 次提交