linux/arch/metag
James Hogan fa771d029a metag: move irq enable out of irqflags.h on SMP
The SMP version of arch_local_irq_enable() uses preempt_disable(), but
<asm/irqflags.h> doesn't include <linux/preempt.h> causing the following
errors on SMP when pstore/ftrace is enabled (caught by buildbot smp
allyesconfig):

In file included from include/linux/irqflags.h:15,
                 from fs/pstore/ftrace.c:16:
arch/metag/include/asm/irqflags.h: In function 'arch_local_irq_enable':
arch/metag/include/asm/irqflags.h:84: error: implicit declaration of function 'preempt_disable'
arch/metag/include/asm/irqflags.h:86: error: implicit declaration of function 'preempt_enable_no_resched'

However <linux/preempt.h> cannot be easily included from
<asm/irqflags.h> as it can cause circular include dependencies in the
!SMP case, and potentially in the SMP case in the future. Therefore move
the SMP implementation of arch_local_irq_enable() into traps.c and use
an inline version of get_trigger_mask() which is also defined in traps.c
for SMP.

This adds an extra layer of function call / stack push when
preempt_disable needs to call other functions, however in the
non-preemptive SMP case it should be about as fast, as it was already
calling the get_trigger_mask() function which is now used inline.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
2013-03-02 20:11:14 +00:00
..
boot metag: Build infrastructure 2013-03-02 20:09:54 +00:00
configs metag: Add JTAG Debug Adapter (DA) support 2013-03-02 20:09:56 +00:00
include metag: move irq enable out of irqflags.h on SMP 2013-03-02 20:11:14 +00:00
kernel metag: move irq enable out of irqflags.h on SMP 2013-03-02 20:11:14 +00:00
lib metag: Build infrastructure 2013-03-02 20:09:54 +00:00
mm metag: hugetlb: convert to vm_unmapped_area() 2013-03-02 20:11:13 +00:00
tbx metag: Build infrastructure 2013-03-02 20:09:54 +00:00
Kconfig metag: Add JTAG Debug Adapter (DA) support 2013-03-02 20:09:56 +00:00
Kconfig.debug metag: Build infrastructure 2013-03-02 20:09:54 +00:00
Kconfig.soc metag: Build infrastructure 2013-03-02 20:09:54 +00:00
Makefile metag: Build infrastructure 2013-03-02 20:09:54 +00:00