linux.git/arch/frv/kernel/process.c, branch v3.10

frv: Use generic idle loop

2013-04-08T15:39:25+00:00

Signed-off-by: Thomas Gleixner 
Cc: Linus Torvalds 
Cc: Rusty Russell 
Cc: Paul McKenney 
Cc: Peter Zijlstra 
Reviewed-by: Cc: Srivatsa S. Bhat 
Cc: Magnus Damm 
Cc: David Howells 
Link: http://lkml.kernel.org/r/20130321215234.217235264@linutronix.de
Signed-off-by: Thomas Gleixner

flagday: don't pass regs to copy_thread()

2012-11-29T04:43:42+00:00

Signed-off-by: Al Viro

frv: switch to generic fork/vfork/clone

2012-11-29T03:16:06+00:00

Signed-off-by: Al Viro

FRV: Fix the new-style kernel_thread() stuff

2012-11-02T13:20:43+00:00

The kernel_thread() changes for FRV don't work, and FRV fails to boot,
starting with:

	commit 02ce496f152df87be081a64796498942c433a2fd
	Author: Al Viro 
	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: David Howells

FRV: Fix incorrect symbol in copy_thread()

2012-10-17T01:49:15+00:00

Fix an incorrect symbol in copy_thread():

  arch/frv/kernel/process.c: In function 'copy_thread':
  arch/frv/kernel/process.c:197: error: 'chilregs' undeclared (first use in this function)
  arch/frv/kernel/process.c:197: error: (Each undeclared identifier is reported only once
  arch/frv/kernel/process.c:197: error: for each function it appears in.)

Reported-by: Geert Uytterhoeven 
Signed-off-by: David Howells 
Acked-by: Al Viro 
cc: Geert Uytterhoeven 
Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

2012-10-12T01:49:08+00:00

Pull pile 2 of execve and kernel_thread unification work from Al Viro:
 "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for
  several more architectures plus assorted signal fixes and cleanups.

  There'll be more (in particular, real fixes for the alpha
  do_notify_resume() irq mess)..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)
  alpha: don't open-code trace_report_syscall_{enter,exit}
  Uninclude linux/freezer.h
  m32r: trim masks
  avr32: trim masks
  tile: don't bother with SIGTRAP in setup_frame
  microblaze: don't bother with SIGTRAP in setup_rt_frame()
  mn10300: don't bother with SIGTRAP in setup_frame()
  frv: no need to raise SIGTRAP in setup_frame()
  x86: get rid of duplicate code in case of CONFIG_VM86
  unicore32: remove pointless test
  h8300: trim _TIF_WORK_MASK
  parisc: decide whether to go to slow path (tracesys) based on thread flags
  parisc: don't bother looping in do_signal()
  parisc: fix double restarts
  bury the rest of TIF_IRET
  sanitize tsk_is_polling()
  bury _TIF_RESTORE_SIGMASK
  unicore32: unobfuscate _TIF_WORK_MASK
  mips: NOTIFY_RESUME is not needed in TIF masks
  mips: merge the identical "return from syscall" per-ABI code
  ...

Conflicts:
	arch/arm/include/asm/thread_info.h

frv: switch to generic kernel_thread()

2012-10-01T04:53:11+00:00

frv: switch to generic sys_execve()

2012-10-01T04:53:10+00:00

current_pt_regs() here is simply __frame

Acked-by: David Howells 
Signed-off-by: Al Viro

frv: split ret_from_fork, simplify kernel_thread() a lot

2012-10-01T04:53:10+00:00

Acked-by: David Howells 
Signed-off-by: Al Viro

frv: Add missing RCU idle APIs on idle loop

2012-09-23T14:44:45+00:00

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: Paul E. McKenney 
Signed-off-by: Frederic Weisbecker 
Cc: David Howells 
Cc:  # 3.3+
Acked-by: David Howells 
Reviewed-by: Josh Triplett