1. 27 9月, 2006 2 次提交
    • T
      [PATCH] inode-diet: Eliminate i_blksize from the inode structure · ba52de12
      Theodore Ts'o 提交于
      This eliminates the i_blksize field from struct inode.  Filesystems that want
      to provide a per-inode st_blksize can do so by providing their own getattr
      routine instead of using the generic_fillattr() function.
      
      Note that some filesystems were providing pretty much random (and incorrect)
      values for i_blksize.
      
      [bunk@stusta.de: cleanup]
      [akpm@osdl.org: generic_fillattr() fix]
      Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      Signed-off-by: NAdrian Bunk <bunk@stusta.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      ba52de12
    • T
      [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private · 8e18e294
      Theodore Ts'o 提交于
      The following patches reduce the size of the VFS inode structure by 28 bytes
      on a UP x86.  (It would be more on an x86_64 system).  This is a 10% reduction
      in the inode size on a UP kernel that is configured in a production mode
      (i.e., with no spinlock or other debugging functions enabled; if you want to
      save memory taken up by in-core inodes, the first thing you should do is
      disable the debugging options; they are responsible for a huge amount of bloat
      in the VFS inode structure).
      
      This patch:
      
      The filesystem or device-specific pointer in the inode is inside a union,
      which is pretty pointless given that all 30+ users of this field have been
      using the void pointer.  Get rid of the union and rename it to i_private, with
      a comment to explain who is allowed to use the void pointer.  This is just a
      cleanup, but it allows us to reuse the union 'u' for something something where
      the union will actually be used.
      
      [judith@osdl.org: powerpc build fix]
      Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      Signed-off-by: NJudith Lebzelter <judith@osdl.org>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      8e18e294
  2. 24 9月, 2006 1 次提交
  3. 22 9月, 2006 4 次提交
  4. 21 9月, 2006 4 次提交
  5. 20 9月, 2006 1 次提交
  6. 13 9月, 2006 4 次提交
  7. 04 9月, 2006 1 次提交
  8. 02 9月, 2006 1 次提交
  9. 30 8月, 2006 2 次提交
    • Z
      [POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2 · 7233593b
      Zang Roy-r61911 提交于
      This adds a new hardware information table for mpic. This enables
      the mpic code to deal with mpic controllers with different register
      layouts and hardware behaviours.
      
      This introduces CONFIG_MPIC_WEIRD.  For boards with non standard mpic
      controllers, select CONFIG_MPIC_WEIRD and add its hardware information
      in the mpic_infos[] array.
      
      TSI108/109 PIC takes the first index of weird hardware information
      table.  :)  The table can be extended. The Tsi108/109 PIC looks like
      standard OpenPIC but, in fact, is different in register mapping and
      behavior.
      
      The patch does not affect the behavior of standard mpic.  If
      CONFIG_MPIC_WEIRD is not defined, the code is essentially identical to
      the current code.
      
      [benh@kernel.crashing.org:
      This patch is a slightly cleaned up version of Zang Roy's support for
      the TSI108 MPIC variant. It also fixes up MPC7448_hpc2 to use the new
      version of the type macros and changes the way MPIC is selected in
      Kconfig to better match what is done for other system devices.
      ]
      Signed-off-by: NRoy Zang <tie-fei.zang@freescale.com>
      Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      7233593b
    • K
      [POWERPC] modify mpc83xx platforms to use new IRQ layer · f1f17716
      Kim Phillips 提交于
      This fixes MPC834x MDS (formerly SYS) and ITX platform code to get IRQ data (including PCI) from the device tree, and to use the new IPIC code.
      
      renamed defconfig (sys -> mds), left one redundant NULL assignment in mpc83xx_pcibios_fixup to keep the compiler happy.
      Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
      Signed-off-by: NLi Yang <leoli@freescale.com>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      f1f17716
  10. 25 8月, 2006 8 次提交
  11. 23 8月, 2006 5 次提交
  12. 08 8月, 2006 4 次提交
    • M
      [POWERPC] Implement SLB shadow buffer · 2f6093c8
      Michael Neuling 提交于
      This adds a shadow buffer for the SLBs and regsiters it with PHYP.
      Only the bolted SLB entries (top 3) are shadowed.
      
      The SLB shadow buffer tells the hypervisor what the kernel needs to
      have in the SLB for the kernel to be able to function.  The hypervisor
      can use this information to speed up partition context switches.
      Signed-off-by: NMichael Neuling <mikey@neuling.org>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      2f6093c8
    • J
      [POWERPC] Rewrite the PPC 86xx IRQ handling to use Flat Device Tree · 919fede6
      Jon Loeliger 提交于
      IRQ setup now comes from the Flat Device Tree and use the new generic
      IRQ code.  Fixed the fsl_soc.c IRQ OF interrupt node parsing.
      Removed some unused MPC86xx macro definition.
      Signed-off-by: NZhang Wei <wei.zhang@freescale.com>
      Signed-off-by: NJon Loeliger <jdl@freescale.com>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      919fede6
    • H
      [POWERPC] Fix might-sleep warning on removing cpus · 81b73dd9
      Haren Myneni 提交于
      Noticing the following might_sleep warning (dump_stack()) during kdump
      testing when CONFIG_DEBUG_SPINLOCK_SLEEP is enabled. All secondary CPUs
      will be calling rtas_set_indicator with interrupts disabled to remove
      them from global interrupt queue.
      
      BUG: sleeping function called from invalid context at
      arch/powerpc/kernel/rtas.c:463
      in_atomic():1, irqs_disabled():1
      Call Trace:
      [C00000000FFFB970] [C000000000010234] .show_stack+0x68/0x1b0 (unreliable)
      [C00000000FFFBA10] [C000000000059354] .__might_sleep+0xd8/0xf4
      [C00000000FFFBA90] [C00000000001D1BC] .rtas_busy_delay+0x20/0x5c
      [C00000000FFFBB20] [C00000000001D8A8] .rtas_set_indicator+0x6c/0xcc
      [C00000000FFFBBC0] [C000000000048BF4] .xics_teardown_cpu+0x118/0x134
      [C00000000FFFBC40] [C00000000004539C]
      .pseries_kexec_cpu_down_xics+0x74/0x8c
      [C00000000FFFBCC0] [C00000000002DF08] .crash_ipi_callback+0x15c/0x188
      [C00000000FFFBD50] [C0000000000296EC] .smp_message_recv+0x84/0xdc
      [C00000000FFFBDC0] [C000000000048E08] .xics_ipi_dispatch+0xf0/0x130
      [C00000000FFFBE50] [C00000000009EF10] .handle_IRQ_event+0x7c/0xf8
      [C00000000FFFBF00] [C0000000000A0A14] .handle_percpu_irq+0x90/0x10c
      [C00000000FFFBF90] [C00000000002659C] .call_handle_irq+0x1c/0x2c
      [C00000000058B9C0] [C00000000000CA10] .do_IRQ+0xf4/0x1a4
      [C00000000058BA50] [C0000000000044EC] hardware_interrupt_entry+0xc/0x10
       --- Exception: 501 at .plpar_hcall_norets+0x14/0x1c
         LR = .pseries_dedicated_idle_sleep+0x190/0x1d4
      [C00000000058BD40] [C00000000058BDE0] 0xc00000000058bde0 (unreliable)
      [C00000000058BDF0] [C00000000001270C] .cpu_idle+0x10c/0x1e0
      [C00000000058BE70] [C000000000009274] .rest_init+0x44/0x5c
      
      To fix this issue, rtas_set_indicator_fast() is added so that will not
      wait for RTAS 'busy' delay and this new function is used for kdump (in
      xics_teardown_cpu()) and for CPU hotplug ( xics_migrate_irqs_away() and
      xics_setup_cpu()).
      
      Note that the platform architecture spec says that set-indicator
      on the indicator we're using here is not permitted to return the
      busy or extended busy status codes.
      Signed-off-by: NHaren Myneni <haren@us.ibm.com>
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      81b73dd9
    • S
      [POWERPC] fix PMU initialization on pseries lpar · dcc42f48
      Sonny Rao 提交于
      We should not be calling power4_enable_pmcs() in
      pseries_lpar_enable_pmcs(); just doing the hypercall is sufficient.
      Prior to 2.6.15 we did not call power4_enable_pmcs() for an lpar.
      
      power4_enable_pmcs() tries to read the hid0 register which is no
      longer legal for an lpar in newer Power processors.
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      dcc42f48
  13. 01 8月, 2006 2 次提交
    • A
      [POWERPC] clean up pseries hcall interfaces · b9377ffc
      Anton Blanchard 提交于
      Our pseries hcall interfaces are out of control:
      
      	plpar_hcall_norets
      	plpar_hcall
      	plpar_hcall_8arg_2ret
      	plpar_hcall_4out
      	plpar_hcall_7arg_7ret
      	plpar_hcall_9arg_9ret
      
      Create 3 interfaces to cover all cases:
      
      	plpar_hcall_norets:	7 arguments no returns
      	plpar_hcall:		6 arguments 4 returns
      	plpar_hcall9:		9 arguments 9 returns
      
      There are only 2 cases in the kernel that need plpar_hcall9, hopefully
      we can keep it that way.
      
      Pass in a buffer to stash return parameters so we avoid the &dummy1,
      &dummy2 madness.
      Signed-off-by: NAnton Blanchard <anton@samba.org>
      --
      Signed-off-by: NPaul Mackerras <paulus@samba.org>
      b9377ffc
    • M
      [PATCH] powermac: More powermac backlight fixes · 4b755999
      Michael Hanselmann 提交于
      This patch fixes several problems:
      - The legacy backlight value might be set at interrupt time. Introduced
        a worker to prevent it from directly calling the backlight code.
      - via-pmu allows the backlight to be grabbed, in which case we need to
        prevent other kernel code from changing the brightness.
      - Don't send PMU requests in via-pmu-backlight when the machine is about
        to sleep or waking up.
      - More Kconfig fixes.
      Signed-off-by: NMichael Hanselmann <linux-kernel@hansmi.ch>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: "Antonino A. Daplas" <adaplas@pol.net>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      4b755999
  14. 31 7月, 2006 1 次提交