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  1. 03 11月, 2012 1 次提交
  3. 02 11月, 2012 4 次提交
    • D
      FRV: Fix the new-style kernel_thread() stuff · e7aa51b2
      由 David Howells 提交于 
      The kernel_thread() changes for FRV don't work, and FRV fails to boot,
starting with:

	commit 02ce496f
	Author: Al Viro <viro@zeniv.linux.org.uk>
	Date:   Tue Sep 18 22:18:51 2012 -0400
	Subject: frv: split ret_from_fork, simplify kernel_thread() a lot

The problem is that the userspace registers are completely cleared when a
kernel thread is created and all subsequent user threads are then copied from
that.  Unfortunately, however, the TBR and PSR registers are restored from the
pt_regs and the values they should be set to are clobbered by the memset.

Instead, copy across the old user registers as normal, and then merely alter
GR8 and GR9 in it if we're going to execute a kernel thread.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      e7aa51b2
    • D
      FRV: Fix the preemption handling · 1ee6f566
      由 David Howells 提交于 
      Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.

Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.
Reported-by: NAl Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
cc: Al Viro <viro@ZenIV.linux.org.uk>
      1ee6f566
    • D
      FRV: Don't objcopy the GNU build_id note · 5f0231d9
      由 David Howells 提交于 
      Don't let objcopy transfer the GNU build_id note into the loadable image as it
is located at address 0 and the image ends up >3G in size.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      5f0231d9
    • D
      FRV: Add missing linux/export.h #inclusions · a5788caa
      由 David Howells 提交于 
      Add missing linux/export.h #inclusions to the FRV arch.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      a5788caa
  5. 17 10月, 2012 3 次提交
  7. 10 10月, 2012 1 次提交
  9. 09 10月, 2012 2 次提交
  11. 06 10月, 2012 3 次提交
  13. 04 10月, 2012 1 次提交
  15. 03 10月, 2012 1 次提交
  17. 01 10月, 2012 8 次提交
  19. 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
  21. 23 9月, 2012 1 次提交
    • F
      frv: Add missing RCU idle APIs on idle loop · 41d8fe5b
      由 Frederic Weisbecker 提交于 
      In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the Frv's idle loop.
Reported-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org> # 3.3+
Acked-by: NDavid Howells <dhowells@redhat.com>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
      41d8fe5b
  23. 20 9月, 2012 1 次提交
  25. 23 8月, 2012 1 次提交
  27. 31 7月, 2012 2 次提交
  29. 24 7月, 2012 1 次提交
  31. 23 7月, 2012 1 次提交
  33. 28 6月, 2012 1 次提交
    • P
      Remove useless wrappers of asm-generic/cpumask.h · da870585
      由 Paul Bolle 提交于 
      frv and xtensa both have a header (in their include/asm directories)
that are thin wrappers around asm-generic/cpumask.h. These wrappers are
useless, since that header doesn't exist. They are also unused (all
files including asm/cpumask.h are x86 specific).

hexagon and openrisc generate similar headers at build time (using a
generic-y entry in include/asm/Kbuild). These generated headers are
useless and unused too.

Remove these headers and generic-y entries.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Acked-by: NRichard Kuo <rkuo@codeaurora.org>
Acked-by: David Howells <dhowells@redhat.com> [FRV]
Signed-off-by: NMichal Marek <mmarek@suse.cz>
      da870585
  35. 12 6月, 2012 1 次提交
  37. 02 6月, 2012 6 次提交