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  1. 20 3月, 2014 2 次提交
  3. 01 2月, 2014 1 次提交
  5. 24 1月, 2014 1 次提交
  7. 03 1月, 2014 1 次提交
  9. 17 11月, 2013 5 次提交
    • R
      alpha: Switch to GENERIC_CLOCKEVENTS · a1659d6d
      由 Richard Henderson 提交于 
      This allows us to get rid of some hacky code for SMP.  Get rid of
some cycle counter hackery that's now handled by generic code via
clocksource + clock_event_device objects.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
      a1659d6d
    • R
      alpha: Reorganize rtc handling · 85d0b3a5
      由 Richard Henderson 提交于 
      Discontinue use of GENERIC_CMOS_UPDATE; rely on the RTC subsystem.

The marvel platform requires that the rtc only be touched from the
boot cpu.  This had been partially implemented with hooks for
get/set_rtc_time, but read/update_persistent_clock were not handled.
Move the hooks from the machine_vec to a special rtc_class_ops struct.

We had read_persistent_clock managing the epoch against which the
rtc hw is based, but this didn't apply to get_rtc_time or set_rtc_time.
This resulted in incorrect values when hwclock(8) gets involved.

Allow the epoch to be set from the kernel command-line, overriding
the autodetection, which is doomed to fail in 2020.  Further, by
implementing the rtc ioctl function, we can expose this epoch to
userland.

Elide the alarm functions that RTC_DRV_CMOS implements.  This was
highly questionable on Alpha, since the interrupt is used by the
system timer.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
      85d0b3a5
    • R
      alpha: Primitive support for CPU power down. · 7f3bbb82
      由 Richard Henderson 提交于 
      Use WTINT to wait for the next interrupt.  Squash the WTINT call
if the PALcode doesn't support it (e.g. MILO).  No attempt is yet
made to skip clock ticks during normal scheduling in order to stay
in power down mode longer.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
      7f3bbb82
    • R
      alpha: Allow HZ to be configured · fddd87d6
      由 Richard Henderson 提交于 
      With the 1024Hz default, we spend 50% of QEMU emulation
processing timer interrupts.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
      fddd87d6
    • R
      alpha: Notice if we're being run under QEMU · 994dcf70
      由 Richard Henderson 提交于 
      When building a generic kernel, do a run-time check on the serial
number, like we do for MILO.  When building a custom kernel, make
this a configure-time check.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
      994dcf70
  11. 15 11月, 2013 1 次提交
  13. 24 10月, 2013 1 次提交
  15. 13 9月, 2013 1 次提交
  17. 20 7月, 2013 1 次提交
  19. 17 4月, 2013 1 次提交
  21. 16 4月, 2013 1 次提交
  23. 08 4月, 2013 1 次提交
  25. 13 3月, 2013 1 次提交
  27. 04 3月, 2013 1 次提交
  29. 28 2月, 2013 1 次提交
  31. 14 2月, 2013 1 次提交
    • A
      burying unused conditionals · d64008a8
      由 Al Viro 提交于 
      __ARCH_WANT_SYS_RT_SIGACTION,
__ARCH_WANT_SYS_RT_SIGSUSPEND,
__ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND,
__ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL - not used anymore
CONFIG_GENERIC_{SIGALTSTACK,COMPAT_RT_SIG{ACTION,QUEUEINFO,PENDING,PROCMASK}} -
can be assumed always set.
      d64008a8
  33. 04 2月, 2013 2 次提交
  35. 19 1月, 2013 1 次提交
    • J
      tty: Added a CONFIG_TTY option to allow removal of TTY · 4f73bc4d
      由 Joe Millenbach 提交于 
      The option allows you to remove TTY and compile without errors. This
saves space on systems that won't support TTY interfaces anyway.
bloat-o-meter output is below.

The bulk of this patch consists of Kconfig changes adding "depends on
TTY" to various serial devices and similar drivers that require the TTY
layer.  Ideally, these dependencies would occur on a common intermediate
symbol such as SERIO, but most drivers "select SERIO" rather than
"depends on SERIO", and "select" does not respect dependencies.

bloat-o-meter output comparing our previous minimal to new minimal by
removing TTY.  The list is filtered to not show removed entries with awk
'$3 != "-"' as the list was very long.

add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350)
function                                     old     new   delta
chr_dev_init                                 166     170      +4
allow_signal                                  80      82      +2
static.__warned                              143     142      -1
disallow_signal                               63      62      -1
__set_special_pids                            95      94      -1
unregister_console                           126     121      -5
start_kernel                                 546     541      -5
register_console                             593     588      -5
copy_from_user                                45      40      -5
sys_setsid                                   128     120      -8
sys_vhangup                                   32      19     -13
do_exit                                     1543    1526     -17
bitmap_zero                                   60      40     -20
arch_local_irq_save                          137     117     -20
release_task                                 674     652     -22
static.spin_unlock_irqrestore                308     260     -48
Signed-off-by: NJoe Millenbach <jmillenbach@gmail.com>
Reviewed-by: NJamey Sharp <jamey@minilop.net>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      4f73bc4d
  37. 12 1月, 2013 1 次提交
    • K
      arch/alpha: remove depends on CONFIG_EXPERIMENTAL · 88d11bb9
      由 Kees Cook 提交于 
      The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Richard Henderson <rth@twiddle.net>
CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: "Michael S. Tsirkin" <mst@redhat.com>
CC: Anna-Maria Gleixner <anna-maria@glx-um.de>
CC: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NKees Cook <keescook@chromium.org>
Acked-by: NMatt Turner <mattst88@gmail.com>
      88d11bb9
  39. 20 12月, 2012 2 次提交
  41. 18 11月, 2012 1 次提交
  43. 13 10月, 2012 1 次提交
  45. 01 10月, 2012 1 次提交
  47. 28 9月, 2012 1 次提交
    • D
      Make most arch asm/module.h files use asm-generic/module.h · 786d35d4
      由 David Howells 提交于 
      Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela,
ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version
into asm-generic/module.h for all arches bar MIPS.

Also, use the generic definition mod_arch_specific where possible.

To this end, I've defined three new config bools:

 (*) HAVE_MOD_ARCH_SPECIFIC

     Arches define this if they don't want to use the empty generic
     mod_arch_specific struct.

 (*) MODULES_USE_ELF_RELA

     Arches define this if their modules can contain RELA records.  This causes
     the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be
     defined by the arch rather than have the core emit an error message.

 (*) MODULES_USE_ELF_REL

     Arches define this if their modules can contain REL records.  This causes
     the Elf_Rel mapping to be emitted and allows apply_relocate() to be
     defined by the arch rather than have the core emit an error message.

Note that it is possible to allow both REL and RELA records: m68k and mips are
two arches that do this.

With this, some arch asm/module.h files can be deleted entirely and replaced
with a generic-y marker in the arch Kbuild file.

Additionally, I have removed the bits from m32r and score that handle the
unsupported type of relocation record as that's now handled centrally.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      786d35d4
  49. 19 8月, 2012 1 次提交
    • M
      alpha: Use new generic strncpy_from_user() and strnlen_user() · f2db633d
      由 Michael Cree 提交于 
      Similar to x86/sparc/powerpc implementations except:
1) we implement an extremely efficient has_zero()/find_zero()
   sequence with both prep_zero_mask() and create_zero_mask()
   no-operations.
2) Our output from prep_zero_mask() differs in that only the
   lowest eight bits are used to represent the zero bytes
   nevertheless it can be safely ORed with other similar masks
   from prep_zero_mask() and forms input to create_zero_mask(),
   the two fundamental properties prep_zero_mask() must satisfy.

Tests on EV67 and EV68 CPUs revealed that the generic code is
essentially as fast (to within 0.5% of CPU cycles) of the old
Alpha specific code for large quadword-aligned strings, despite
the 30% extra CPU instructions executed.  In contrast, the
generic code for unaligned strings is substantially slower (by
more than a factor of 3) than the old Alpha specific code.
Signed-off-by: NMichael Cree <mcree@orcon.net.nz>
Acked-by: NMatt Turner <mattst88@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f2db633d
  51. 31 7月, 2012 1 次提交
  53. 21 5月, 2012 1 次提交
  55. 05 5月, 2012 2 次提交
  57. 03 5月, 2012 1 次提交
  59. 26 4月, 2012 1 次提交
  61. 29 11月, 2011 1 次提交
    • M
      alpha: switch to GENERIC_PCI_IOMAP · f2971c4c
      由 Michael S. Tsirkin 提交于 
      alpha copied pci_iomap from generic code to avoid
pulling the rest of iomap.c in.  Since that's in
a separate file now, we can reuse the common implementation.

The only difference is handling of nocache flag,
that turns out to be done correctly by the
generic code since arch/alpha/include/asm/io.h
defines ioremap_nocache same as ioremap.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
      f2971c4c
  63. 25 11月, 2011 1 次提交