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  1. 27 Aug, 2008 1 commit
    • H. Peter Anvin's avatar
      x86: update defconfigs · c1b362e3
      H. Peter Anvin authored
      Enable some option commonly used by testers in defconfig, including
      some very common device drivers and network boot support.  defconfig
      is still not meant to be a kitchen-sink configuration.
      Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
      c1b362e3
  2. 20 Jul, 2008 1 commit
    • Ingo Molnar's avatar
      Subject: devmem, x86: fix rename of CONFIG_NONPROMISC_DEVMEM · d092633b
      Ingo Molnar authored
      From: Arjan van de Ven <arjan@infradead.org>
      Date: Sat, 19 Jul 2008 15:47:17 -0700
      
      CONFIG_NONPROMISC_DEVMEM was a rather confusing name - but renaming it
      to CONFIG_PROMISC_DEVMEM causes problems on architectures that do not
      support this feature; this patch renames it to CONFIG_STRICT_DEVMEM,
      so that architectures can opt-in into it.
      
      ( the polarity of the option is still the same as it was originally; it
        needs to be for now to not break architectures that don't have the
        infastructure yet to support this feature)
      Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
      Cc: "V.Radhakrishnan" <rk@atr-labs.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      ---
      d092633b
  3. 12 May, 2008 2 commits
  4. 26 Apr, 2008 1 commit
    • Ingo Molnar's avatar
      x86: add optimized inlining · 60a3cdd0
      Ingo Molnar authored
      add CONFIG_OPTIMIZE_INLINING=y.
      
      allow gcc to optimize the kernel image's size by uninlining
      functions that have been marked 'inline'. Previously gcc was
      forced by Linux to always-inline these functions via a gcc
      attribute:
      
       #define inline	inline __attribute__((always_inline))
      
      Especially when the user has already selected
      CONFIG_OPTIMIZE_FOR_SIZE=y this can make a huge difference in
      kernel image size (using a standard Fedora .config):
      
         text    data     bss     dec           hex filename
         5613924  562708 3854336 10030968    990f78 vmlinux.before
         5486689  562708 3854336  9903733    971e75 vmlinux.after
      
      that's a 2.3% text size reduction (!).
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      60a3cdd0
  5. 09 Feb, 2008 1 commit
  6. 30 Jan, 2008 1 commit
    • Christoph Lameter's avatar
      x86: 64-bit, make sparsemem vmemmap the only memory model · b263295d
      Christoph Lameter authored
      Use sparsemem as the only memory model for UP, SMP and NUMA.  Measurements
      indicate that DISCONTIGMEM has a higher overhead than sparsemem.  And
      FLATMEMs benefits are minimal.  So I think its best to simply standardize
      on sparsemem.
      
      Results of page allocator tests (test can be had via git from slab git
      tree branch tests)
      
      Measurements in cycle counts. 1000 allocations were performed and then the
      average cycle count was calculated.
      
      Order	FlatMem	Discontig	SparseMem
      0	  639	  665		  641
      1	  567	  647		  593
      2	  679	  774		  692
      3	  763	  967		  781
      4	  961	 1501		  962
      5	 1356	 2344		 1392
      6	 2224	 3982		 2336
      7	 4869	 7225		 5074
      8	12500	14048		12732
      9	27926	28223		28165
      10	58578	58714		58682
      
      (Note that FlatMem is an SMP config and the rest NUMA configurations)
      
      Memory use:
      
      SMP Sparsemem
      -------------
      
      Kernel size:
      
         text    data     bss     dec     hex filename
      3849268  397739 1264856 5511863  541ab7 vmlinux
      
                   total       used       free     shared    buffers     cached
      Mem:       8242252      41164    8201088          0        352      11512
      -/+ buffers/cache:      29300    8212952
      Swap:      9775512          0    9775512
      
      SMP Flatmem
      -----------
      
      Kernel size:
      
         text    data     bss     dec     hex filename
      3844612  397739 1264536 5506887  540747 vmlinux
      
      So 4.5k growth in text size vs. FLATMEM.
      
                   total       used       free     shared    buffers     cached
      Mem:       8244052      40544    8203508          0        352      11484
      -/+ buffers/cache:      28708    8215344
      
      2k growth in overall memory use after boot.
      
      NUMA discontig:
      
         text    data     bss     dec     hex filename
      3888124  470659 1276504 5635287  55fcd7 vmlinux
      
                   total       used       free     shared    buffers     cached
      Mem:       8256256      56908    8199348          0        352      11496
      -/+ buffers/cache:      45060    8211196
      Swap:      9775512          0    9775512
      
      NUMA sparse:
      
         text    data     bss     dec     hex filename
      3896428  470659 1276824 5643911  561e87 vmlinux
      
      8k text growth. Given that we fully inline virt_to_page and friends now
      that is rather good.
      
                   total       used       free     shared    buffers     cached
      Mem:       8264720      57240    8207480          0        352      11516
      -/+ buffers/cache:      45372    8219348
      Swap:      9775512          0    9775512
      
      The total available memory is increased by 8k.
      
      This patch makes sparsemem the default and removes discontig and
      flatmem support from x86.
      
      [ akpm@linux-foundation.org: allnoconfig build fix ]
      Acked-by: default avatarAndi Kleen <ak@suse.de>
      Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      b263295d
  7. 29 Oct, 2007 1 commit
  8. 25 Oct, 2007 1 commit
    • Sam Ravnborg's avatar
      x86: move defconfig files for i386 and x86_64 to x86 · 2266cfd5
      Sam Ravnborg authored
      With some small changes to kconfig makefile we can now
      locate the defconfig files for i386 and x86_64 in
      the configs/ subdirectory under x86.
      make ARCH=i386 defconfig and make defconfig
      works as expected also after this change.
      But arch maintainers shall now update a defconfig file in
      the configs/ directory.
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      2266cfd5
  9. 31 Aug, 2007 1 commit
  10. 29 Jul, 2007 1 commit
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  14. 28 Apr, 2007 1 commit
    • Jeff Garzik's avatar
      libata/IDE: remove combined mode quirk · 8cdfb29c
      Jeff Garzik authored
      Both old-IDE and libata should be able handle all controllers and
      devices found using normal resource reservation methods.
      
      This eliminates the awful, low-performing split-driver configuration
      where old-IDE drove the PATA portion of a PCI device, in PIO-only mode,
      and libata drove the SATA portion of the /same/ PCI device, in DMA mode.
      Typically vendors would ship SATA hard drive / PATA optical
      configuration, which would lend itself to slow (PIO-only) CD-ROM
      performance.
      
      For Intel users running in combined mode, it is now wholly dependent on
      your driver choice (potentially link order, if you compile both drivers
      in) whether old-IDE or libata will drive your hardware.
      
      In either case, you will get full performance from both SATA and PATA
      ports now, without having to pass a kernel command line parameter.
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      8cdfb29c
  15. 16 Mar, 2007 1 commit
  16. 13 Feb, 2007 1 commit
  17. 11 Jan, 2007 1 commit
  18. 30 Dec, 2006 1 commit
  19. 15 Dec, 2006 1 commit
    • Linus Torvalds's avatar
      Remove stack unwinder for now · d1526e2c
      Linus Torvalds authored
      It has caused more problems than it ever really solved, and is
      apparently not getting cleaned up and fixed.  We can put it back when
      it's stable and isn't likely to make warning or bug events worse.
      
      In the meantime, enable frame pointers for more readable stack traces.
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      d1526e2c
  20. 09 Dec, 2006 1 commit
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  39. 15 Nov, 2005 1 commit