linux.git/arch/metag/kernel, branch v3.15

Merge tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2014-04-03T17:26:31+00:00

Pull tracing updates from Steven Rostedt:
 "Most of the changes were largely clean ups, and some documentation.
  But there were a few features that were added:

  Uprobes now work with event triggers and multi buffers and have
  support under ftrace and perf.

  The big feature is that the function tracer can now be used within the
  multi buffer instances.  That is, you can now trace some functions in
  one buffer, others in another buffer, all functions in a third buffer
  and so on.  They are basically agnostic from each other.  This only
  works for the function tracer and not for the function graph trace,
  although you can have the function graph tracer running in the top
  level buffer (or any tracer for that matter) and have different
  function tracing going on in the sub buffers"

* tag 'trace-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (45 commits)
  tracing: Add BUG_ON when stack end location is over written
  tracepoint: Remove unused API functions
  Revert "tracing: Move event storage for array from macro to standalone function"
  ftrace: Constify ftrace_text_reserved
  tracepoints: API doc update to tracepoint_probe_register() return value
  tracepoints: API doc update to data argument
  ftrace: Fix compilation warning about control_ops_free
  ftrace/x86: BUG when ftrace recovery fails
  ftrace: Warn on error when modifying ftrace function
  ftrace: Remove freelist from struct dyn_ftrace
  ftrace: Do not pass data to ftrace_dyn_arch_init
  ftrace: Pass retval through return in ftrace_dyn_arch_init()
  ftrace: Inline the code from ftrace_dyn_table_alloc()
  ftrace: Cleanup of global variables ftrace_new_pgs and ftrace_update_cnt
  tracing: Evaluate len expression only once in __dynamic_array macro
  tracing: Correctly expand len expressions from __dynamic_array macro
  tracing/module: Replace include of tracepoint.h with jump_label.h in module.h
  tracing: Fix event header migrate.h to include tracepoint.h
  tracing: Fix event header writeback.h to include tracepoint.h
  tracing: Warn if a tracepoint is not set via debugfs
  ...

metag: Use get_signal() signal_setup_done()

2014-03-18T10:30:22+00:00

Use the more generic functions get_signal() signal_setup_done()
for signal delivery.

[James Hogan: avoid reordering get_signal() and restart check.]

Signed-off-by: Richard Weinberger 
Signed-off-by: James Hogan

metag: Use irq_set_affinity instead of homebrewn code

2014-03-17T12:34:59+00:00

There is no point in having an incomplete copy of irq_set_affinity()
for the hotplug irq migration code.

Use the core function instead and while at it switch to
for_each_active_irq()

Signed-off-by: Thomas Gleixner 
Cc: James Hogan 
Cc: metag 
Signed-off-by: James Hogan

ftrace: Do not pass data to ftrace_dyn_arch_init

2014-03-07T15:06:14+00:00

As the data parameter is not really used by any ftrace_dyn_arch_init,
remove that from ftrace_dyn_arch_init. This also removes the addr
local variable from ftrace_init which is now unused.

Note the documentation was imprecise as it did not suggest to set
(*data) to 0.

Link: http://lkml.kernel.org/r/1393268401-24379-4-git-send-email-jslaby@suse.cz

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: linux-arch@vger.kernel.org
Signed-off-by: Jiri Slaby 
Signed-off-by: Steven Rostedt

ftrace: Pass retval through return in ftrace_dyn_arch_init()

2014-03-07T15:06:13+00:00

No architecture uses the "data" parameter in ftrace_dyn_arch_init() in any
way, it just sets the value to 0. And this is used as a return value
in the caller -- ftrace_init, which just checks the retval against
zero.

Note there is also "return 0" in every ftrace_dyn_arch_init.  So it is
enough to check the retval and remove all the indirect sets of data on
all archs.

Link: http://lkml.kernel.org/r/1393268401-24379-3-git-send-email-jslaby@suse.cz

Cc: linux-arch@vger.kernel.org
Signed-off-by: Jiri Slaby 
Signed-off-by: Steven Rostedt

metag/smp: Make boot_secondary() static

2014-01-06T09:59:22+00:00

boot_secondary() is not used outside arch/metag/kernel/smp.c, hence make it
static.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: James Hogan

metag: topology: export 'cpu_core_map'

2013-12-19T11:36:13+00:00

We need to export 'cpu_core_map' since the topology_core_cpumask macro
refers to it and is used by certain kernel modules.

Found in allmodconfig build:
  ERROR: "cpu_core_map" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined!

Signed-off-by: Chen Gang 
Signed-off-by: James Hogan

smp, metag: kill SMP single function call interrupt

2013-12-05T16:35:29+00:00

Commit 9a46ad6d6df3 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt is
needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.

Signed-off-by: Jiang Liu 
Cc: Andrew Morton 
Cc: Shaohua Li 
Cc: Peter Zijlstra 
Cc: Ingo Molnar 
Cc: Steven Rostedt 
Cc: Jiri Kosina 
Signed-off-by: James Hogan

metag: smp: don't set irq regs in do_IPI()

2013-11-29T14:52:13+00:00

Since commit f6b30d32d242 (metag: kick: add missing irq_enter/exit to
kick_handler()), the main kick_handler() function deals with setting and
restoring the irq registers pointer. Therefore do_IPI() which is called
indirectly from kick_handler() doesn't need to do that itself any
longer. Therefore remove that code and do_IPI()'s pt_regs argument.

Signed-off-by: James Hogan 
Cc: linux-metag@vger.kernel.org
Cc: Thomas Gleixner

metag: dma: remove dead code in dma_alloc_init()

2013-11-25T10:50:27+00:00

Meta has 2 levels of page table so the pmd folds into the pud which
folds into the pgd. Therefore the !pmd check in dma_alloc_init() is dead
code since it essentially checks whether:
  (init_mm->pgd + 0x770) == 0

Remove the check.

Reported-by: Chen Gang 
Signed-off-by: James Hogan