linux-toradex.git/arch/s390/kernel/process.c, branch v3.0.4

[S390] Remove unused includes in process.c

2011-05-23T08:24:32+00:00

Remove unsused includes from arch/s390/kernel/process.c.

Signed-off-by: Jan Glauber 
Signed-off-by: Martin Schwidefsky

[S390] Randomize PIEs

2011-01-12T08:55:25+00:00

Randomize ELF_ET_DYN_BASE, which is used when loading position
independent executables.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] Randomise the brk region

2011-01-12T08:55:25+00:00

Randomize heap address like other architectures do already.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] Randomize lower bits of stack address

2011-01-12T08:55:25+00:00

Randomize the lower bits of the stack address like x86 and powerpc.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] ptrace cleanup

2011-01-05T11:47:31+00:00

Overhaul program event recording and the code dealing with the ptrace
user space interface.

Signed-off-by: Martin Schwidefsky

[S390] smp/idle: call init_idle() before starting a new cpu

2011-01-05T11:47:30+00:00

Call init_idle() which (re-)initializes the idle task structure before
it gets used on a new cpu.
That way we can also get rid of the odd preempt_enable_no_resched()
call we have in the cpu offline path within cpu_idle(). That call
prevented preempt count imbalances between cpu hotplug operations.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] add kprobes annotations

2011-01-05T11:47:24+00:00

Add kprobes annotations to get the massive 'probe kernel.function("*") {}'
stress test working.

Signed-off-by: Martin Schwidefsky

[S390] cpu hotplug/idle: move cpu_die call to enabled context

2010-10-25T14:10:15+00:00

There is no difference if cpu_die is called from enabled or disabled
context. Except that the fast_gup code might be called via
cpu_die -> idle_task_exit -> __mm_drop -> crst_table_free. Which in
turn grabs and releases a spinlock using the _bh ops, which is not
allowed in irq disabled context, since spin_unlock_bh will
unconditionally enable interrupts again.
To get rid of the warning emitted by the softirq code just move the
code to enabled context.

In this case this doesn't fix a bug, we just get rid of a warning.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

Make do_execve() take a const filename pointer

2010-08-18T01:07:43+00:00

Make do_execve() take a const filename pointer so that kernel_execve() compiles
correctly on ARM:

arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type

This also requires the argv and envp arguments to be consted twice, once for
the pointer array and once for the strings the array points to.  This is
because do_execve() passes a pointer to the filename (now const) to
copy_strings_kernel().  A simpler alternative would be to cast the filename
pointer in do_execve() when it's passed to copy_strings_kernel().

do_execve() may not change any of the strings it is passed as part of the argv
or envp lists as they are some of them in .rodata, so marking these strings as
const should be fine.

Further kernel_execve() and sys_execve() need to be changed to match.

This has been test built on x86_64, frv, arm and mips.

Signed-off-by: David Howells 
Tested-by: Ralf Baechle 
Acked-by: Russell King 
Signed-off-by: Linus Torvalds

Mark arguments to certain syscalls as being const

2010-08-13T23:53:13+00:00

Mark arguments to certain system calls as being const where they should be but
aren't.  The list includes:

 (*) The filename arguments of various stat syscalls, execve(), various utimes
     syscalls and some mount syscalls.

 (*) The filename arguments of some syscall helpers relating to the above.

 (*) The buffer argument of various write syscalls.

Signed-off-by: David Howells 
Acked-by: David S. Miller 
Signed-off-by: Linus Torvalds