kernel.git/arch/powerpc/platforms/cell, branch linux-3.17.y

powerpc: cell: Use ktime_get_ns()

2014-07-23T17:18:07Z

Replace the ever recurring: ts = ktime_get_ts(); ns = timespec_to_ns(&ts); with ns = ktime_get_ns(); Signed-off-by: Thomas Gleixner Acked-by: Arnd Bergmann Signed-off-by: John Stultz

powerpc/cell: Fix compilation with CONFIG_COREDUMP=n

2014-07-11T02:55:05Z

Commit 046d662f4818 "coredump: make core dump functionality optional" made the coredump optional, but didn't update the spufs code that depends on it. That leads to build errors such as: arch/powerpc/platforms/built-in.o: In function `.spufs_arch_write_note': coredump.c:(.text+0x22cd4): undefined reference to `.dump_emit' coredump.c:(.text+0x22cf4): undefined reference to `.dump_emit' coredump.c:(.text+0x22d0c): undefined reference to `.dump_align' coredump.c:(.text+0x22d48): undefined reference to `.dump_emit' coredump.c:(.text+0x22e7c): undefined reference to `.dump_skip' Fix it by adding some ifdefs in the cell code. Signed-off-by: Michael Ellerman Signed-off-by: Benjamin Herrenschmidt

powerpc/cell: cbe_thermal.c: Cleaning up a variable is of the wrong type

2014-06-24T04:05:59Z

This variable is of the wrong type, everywhere it is used it should be an unsigned int rather than a int. Signed-off-by: Rickard Strandqvist Signed-off-by: Benjamin Herrenschmidt

powerpc/spufs: Remove duplicate SPUFS_CNTL_MAP_SIZE define

2014-06-11T07:03:32Z

The SPUFS_CNTL_MAP_SIZE define is cut and pasted twice so we can delete the second instance. Signed-off-by: Dan Carpenter Acked-by: Jeremy Kerr Acked-by: Arnd Bergmann Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix SMP issues with ppc64le ABIv2

2014-04-23T00:05:26Z

There is no need to put a function descriptor in __secondary_hold_spinloop. Use ppc_function_entry to get the instruction address and put it in __secondary_hold_spinloop instead. Also fix an issue where we assumed cur_cpu_spec held a function descriptor. Signed-off-by: Anton Blanchard

arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c

2014-04-09T02:53:40Z

Here rcu_assign_pointer() is ensuring that the initialization of a structure is carried out before storing a pointer to that structure. So, rcu_assign_pointer(p, NULL) can always safely be converted to RCU_INIT_POINTER(p, NULL). Signed-off-by: Monam Agarwal Signed-off-by: Benjamin Herrenschmidt

Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

2014-04-02T20:47:29Z

Pull powerpc non-virtualized cpuidle from Ben Herrenschmidt: "This is the branch I mentioned in my other pull request which contains our improved cpuidle support for the "powernv" platform (non-virtualized). It adds support for the "fast sleep" feature of the processor which provides higher power savings than our usual "nap" mode but at the cost of losing the timers while asleep, and thus exploits the new timer broadcast framework to work around that limitation. It's based on a tip timer tree that you seem to have already merged" * 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: cpuidle/powernv: Parse device tree to setup idle states cpuidle/powernv: Add "Fast-Sleep" CPU idle state powerpc/powernv: Add OPAL call to resync timebase on wakeup powerpc/powernv: Add context management for Fast Sleep powerpc: Split timer_interrupt() into timer handling and interrupt handling routines powerpc: Implement tick broadcast IPI as a fixed IPI message powerpc: Free up the slot of PPC_MSG_CALL_FUNC_SINGLE IPI message

Merge branch 'sched/urgent' into sched/core

2014-03-11T10:34:27Z

Pick up fixes before queueing up new changes. Signed-off-by: Ingo Molnar

mm: fix GFP_THISNODE callers and clarify

2014-03-11T00:26:19Z

GFP_THISNODE is for callers that implement their own clever fallback to remote nodes. It restricts the allocation to the specified node and does not invoke reclaim, assuming that the caller will take care of it when the fallback fails, e.g. through a subsequent allocation request without GFP_THISNODE set. However, many current GFP_THISNODE users only want the node exclusive aspect of the flag, without actually implementing their own fallback or triggering reclaim if necessary. This results in things like page migration failing prematurely even when there is easily reclaimable memory available, unless kswapd happens to be running already or a concurrent allocation attempt triggers the necessary reclaim. Convert all callsites that don't implement their own fallback strategy to __GFP_THISNODE. This restricts the allocation a single node too, but at the same time allows the allocator to enter the slowpath, wake kswapd, and invoke direct reclaim if necessary, to make the allocation happen when memory is full. Signed-off-by: Johannes Weiner Acked-by: Rik van Riel Cc: Jan Stancek Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

powerpc: Implement tick broadcast IPI as a fixed IPI message

2014-03-05T04:55:04Z

For scalability and performance reasons, we want the tick broadcast IPIs to be handled as efficiently as possible. Fixed IPI messages are one of the most efficient mechanisms available - they are faster than the smp_call_function mechanism because the IPI handlers are fixed and hence they don't involve costly operations such as adding IPI handlers to the target CPU's function queue, acquiring locks for synchronization etc. Luckily we have an unused IPI message slot, so use that to implement tick broadcast IPIs efficiently. Signed-off-by: Srivatsa S. Bhat [Functions renamed to tick_broadcast* and Changelog modified by Preeti U. Murthy] Signed-off-by: Preeti U. Murthy Acked-by: Geoff Levand [For the PS3 part] Signed-off-by: Benjamin Herrenschmidt