kernel.git/arch/arm/include/asm/thread_info.h, branch linux-3.19.y

Merge branches 'fixes', 'misc', 'pm' and 'sa1100' into for-next

2014-12-05T16:30:47Z

ARM: 8226/1: cacheflush: get rid of restarting block

2014-11-27T15:55:35Z

We cannot restart cacheflush safely if a process provides user-defined signal handler and signal is pending. In this case -EINTR is returned and it is expected that process re-invokes syscall. However, there are a few problems with that: * looks like nobody bothers checking return value from cacheflush * but if it did, we don't provide the restart address for that, so the process has to use the same range again * ...and again, what might lead to looping forever So, remove cacheflush restarting code and terminate cache flushing as early as fatal signal is pending. Cc: stable@vger.kernel.org # 3.12+ Reported-by: Chanho Min Signed-off-by: Vladimir Murzin Acked-by: Will Deacon Signed-off-by: Russell King

ARM: 8173/1: Calculate current_thread_info from current_stack_pointer

2014-11-13T23:58:04Z

Use the global current_stack_pointer to get the value of the stack pointer. This change supports being able to compile the kernel with both gcc and clang. Signed-off-by: Behan Webster Reviewed-by: Mark Charlebois Reviewed-by: Jan-Simon Möller Acked-by: Will Deacon Acked-by: Nicolas Pitre Signed-off-by: Russell King

ARM: 8170/1: Add global named register current_stack_pointer for ARM

2014-11-13T23:58:00Z

Define a global named register for current_stack_pointer. The use of this new variable guarantees that both gcc and clang can access this register in C code. Signed-off-by: Behan Webster Reviewed-by: Jan-Simon Möller Reviewed-by: Mark Charlebois Acked-by: Will Deacon Acked-by: Nicolas Pitre Signed-off-by: Russell King

ARM: 8078/1: get rid of hardcoded assumptions about kernel stack size

2014-07-01T14:05:47Z

Changing kernel stack size on arm is not as simple as it should be: 1) THREAD_SIZE macro doesn't respect PAGE_SIZE and THREAD_SIZE_ORDER 2) stack size is hardcoded in get_thread_info macro This patch fixes it by calculating THREAD_SIZE and thread_info address taking into account PAGE_SIZE and THREAD_SIZE_ORDER. Now changing stack size becomes simply changing THREAD_SIZE_ORDER. Signed-off-by: Andrey Ryabinin Acked-by: Nicolas Pitre Signed-off-by: Russell King

ARM: 8069/1: Make thread_save_fp macro aware of THUMB2 mode

2014-06-17T13:47:36Z

The thread_save_fp macro has been defined so that it always reads the fp member of the cpu_context_save struct. However, in the case of THUMB2 the fp is saved not in the fp (r11) member but rather in r7. This patch changes the way the macro is defined such that FP is read from the correct place depending on whether we are a THUMB2 kernel or not. This enables the backtrace in sitaution such as "echo t > /proc/sysrq-trigger" or the function in which a process sleeping when "ps -Al" is invoked. Signed-off-by: Nikolay Borisov Reviewed-by: Anurag Aggarwal Acked-by: Will Deacon Signed-off-by: Russell King

ARM: add uprobes support

2014-03-18T20:39:40Z

Using Rabin Vincent's ARM uprobes patches as a base, enable uprobes support on ARM. Caveats: - Thumb is not supported Signed-off-by: Rabin Vincent Signed-off-by: David A. Long

preempt: Make PREEMPT_ACTIVE generic

2013-11-13T19:21:47Z

No point in having this bit defined by architecture. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de

Merge branch 'for-rmk/cacheflush-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable

2013-08-28T17:38:40Z

ARM: cacheflush: split user cache-flushing into interruptible chunks

2013-08-20T10:54:53Z

Flushing a large, non-faulting VMA from userspace can potentially result in a long time spent flushing the cache line-by-line without preemption occurring (in the case of CONFIG_PREEMPT=n). Whilst this doesn't affect the stability of the system, it can certainly affect the responsiveness and CPU availability for other tasks. This patch splits up the user cacheflush code so that it flushes in chunks of a page. After each chunk has been flushed, we may reschedule if appropriate and, before processing the next chunk, we allow any pending signals to be handled before resuming from where we left off. Signed-off-by: Will Deacon