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  1. 19 10月, 2010 1 次提交
  3. 16 6月, 2010 1 次提交
  5. 17 2月, 2010 2 次提交
  7. 09 6月, 2009 1 次提交
  9. 15 5月, 2009 1 次提交
  11. 23 2月, 2009 1 次提交
  13. 19 11月, 2008 2 次提交
  15. 04 8月, 2008 1 次提交
  17. 25 7月, 2008 1 次提交
  19. 15 7月, 2008 1 次提交
  21. 01 7月, 2008 2 次提交
  23. 30 6月, 2008 1 次提交
  25. 16 6月, 2008 1 次提交
  27. 14 5月, 2008 1 次提交
  29. 29 4月, 2008 1 次提交
    • P
      [POWERPC] Use __always_inline for xchg* and cmpxchg* · dd18434f
      由 Paul Mackerras 提交于 
      This changes the definitions of the xchg and cmpxchg families of
functions in include/asm-powerpc/system.h to be marked __always_inline
rather than __inline__.  The reason for doing this is that we rely on
the compiler inlining them in order to eliminate the references to
__xchg_called_with_bad_pointer and __cmpxchg_called_with_bad_pointer,
which are deliberately left undefined.  Thus this change will enable
us to make the inline keyword be just a hint rather than a directive.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      dd18434f
  31. 20 4月, 2008 1 次提交
  33. 08 2月, 2008 1 次提交
  35. 07 2月, 2008 1 次提交
    • O
      [POWERPC] Fix compilation for CONFIG_DEBUGGER=n and CONFIG_KEXEC=y · 7dbb922c
      由 Olof Johansson 提交于 
      Looks like "[POWERPC] kdump shutdown hook support" broke builds when
CONFIG_DEBUGGER=n and CONFIG_KEXEC=y, such as in g5_defconfig:

arch/powerpc/kernel/crash.c: In function 'default_machine_crash_shutdown':
arch/powerpc/kernel/crash.c:388: error: '__debugger_fault_handler' undeclared (first use in this function)
arch/powerpc/kernel/crash.c:388: error: (Each undeclared identifier is reported only once
arch/powerpc/kernel/crash.c:388: error: for each function it appears in.)

Move the debugger hooks to under CONFIG_DEBUGGER || CONFIG_KEXEC, since
that's when the crash code is enabled.

(I should have caught this with my build-script pre-merge, my bad. :( )
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      7dbb922c
  37. 24 1月, 2008 1 次提交
  39. 17 10月, 2007 1 次提交
    • O
      increase AT_VECTOR_SIZE to terminate saved_auxv properly · 4f9a58d7
      由 Olaf Hering 提交于 
      include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO.  fs/binfmt_elf.c
has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT
entries.  So in the worst case, saved_auxv does not get an AT_NULL entry at
the end.

The saved_auxv array must be terminated with an AT_NULL entry.  Make the
size of mm_struct->saved_auxv arch dependend, based on the number of
ARCH_DLINFO entries.
Signed-off-by: NOlaf Hering <olh@suse.de>
Cc: Roland McGrath <roland@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      4f9a58d7
  41. 03 10月, 2007 1 次提交
  43. 19 9月, 2007 1 次提交
    • S
      [POWERPC] Fix section mismatch in PCI code · 7b2c3c5b
      由 Stephen Rothwell 提交于 
      Create a helper function (alloc_maybe_bootmem) that is marked __init_refok
to limit the chances of mistakenly referring to other __init routines.

WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier')
WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr')
WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config')
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      7b2c3c5b
  45. 20 7月, 2007 1 次提交
  47. 10 7月, 2007 2 次提交
  49. 09 5月, 2007 2 次提交
  51. 30 4月, 2007 1 次提交
  53. 01 11月, 2006 1 次提交
  55. 04 10月, 2006 1 次提交
  57. 23 8月, 2006 1 次提交
    • N
      [POWERPC] Fix gettimeofday inaccuracies · 5db9fa95
      由 Nathan Lynch 提交于 
      There are two problems in the powerpc gettimeofday code which can
cause incorrect results to be returned.

The first is that there is a race between do_gettimeofday and the
timer interrupt:

1. do_gettimeofday does get_tb()

2. decrementer exception on boot cpu which runs timer_recalc_offset,
   which also samples the timebase and updates the do_gtod structure
   with a greater timebase value.

3. do_gettimeofday calls __do_gettimeofday, which leads to the
   negative result from tb_val - temp_varp->tb_orig_stamp.

The second is caused by taking the boot cpu offline, which can cause
the value of tb_last_jiffy to be increased past the currently
available timebase, causing the same underflow as above.

[paulus@samba.org - define and use data_barrier() instead of mb().]
Signed-off-by: NNathan Lynch <ntl@pobox.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      5db9fa95
  59. 15 7月, 2006 1 次提交
    • S
      [PATCH] remove set_wmb - arch removal · 52393ccc
      由 Steven Rostedt 提交于 
      set_wmb should not be used in the kernel because it just confuses the
code more and has no benefit.  Since it is not currently used in the
kernel this patch removes it so that new code does not include it.

All archs define set_wmb(var, value) to do { var = value; wmb(); }
while(0) except ia64 and sparc which use a mb() instead.  But this is
still moot since it is not used anyway.

Hasn't been tested on any archs but x86 and x86_64 (and only compiled
tested)
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      52393ccc
  61. 13 7月, 2006 1 次提交
  63. 09 7月, 2006 1 次提交
  65. 31 3月, 2006 1 次提交
  67. 22 3月, 2006 1 次提交
  69. 24 2月, 2006 1 次提交
    • P
      powerpc: Implement accurate task and CPU time accounting · c6622f63
      由 Paul Mackerras 提交于 
      This implements accurate task and cpu time accounting for 64-bit
powerpc kernels.  Instead of accounting a whole jiffy of time to a
task on a timer interrupt because that task happened to be running at
the time, we now account time in units of timebase ticks according to
the actual time spent by the task in user mode and kernel mode.  We
also count the time spent processing hardware and software interrupts
accurately.  This is conditional on CONFIG_VIRT_CPU_ACCOUNTING.  If
that is not set, we do tick-based approximate accounting as before.

To get this accurate information, we read either the PURR (processor
utilization of resources register) on POWER5 machines, or the timebase
on other machines on

* each entry to the kernel from usermode
* each exit to usermode
* transitions between process context, hard irq context and soft irq
  context in kernel mode
* context switches.

On POWER5 systems with shared-processor logical partitioning we also
read both the PURR and the timebase at each timer interrupt and
context switch in order to determine how much time has been taken by
the hypervisor to run other partitions ("steal" time).  Unfortunately,
since we need values of the PURR on both threads at the same time to
accurately calculate the steal time, and since we can only calculate
steal time on a per-core basis, the apportioning of the steal time
between idle time (time which we ceded to the hypervisor in the idle
loop) and actual stolen time is somewhat approximate at the moment.

This is all based quite heavily on what s390 does, and it uses the
generic interfaces that were added by the s390 developers,
i.e. account_system_time(), account_user_time(), etc.

This patch doesn't add any new interfaces between the kernel and
userspace, and doesn't change the units in which time is reported to
userspace by things such as /proc/stat, /proc/<pid>/stat, getrusage(),
times(), etc.  Internally the various task and cpu times are stored in
timebase units, but they are converted to USER_HZ units (1/100th of a
second) when reported to userspace.  Some precision is therefore lost
but there should not be any accumulating error, since the internal
accumulation is at full precision.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      c6622f63