linux.git/arch/sparc/kernel/entry.h, branch v3.10

sparc64: Improvde documentation and readability of atomic backoff code.

2012-10-28T20:04:47+00:00

Document what's going on in asm/backoff.h with a large and descriptive
comment.  Refer to it above the cpu_relax() definition in
asm/processor_64.h

Rename the pause patching section to have "3insn" in it's name like
the other patching sections do.

Based upon feedback from Sam Ravnborg.

Signed-off-by: David S. Miller

sparc64: Use pause instruction when available.

2012-10-28T06:00:41+00:00

In atomic backoff and cpu_relax(), use the pause instruction
found on SPARC-T4 and later.

It makes the cpu strand unselectable for the given number of
cycles, unless an intervening disrupting trap occurs.

Signed-off-by: David S. Miller

sparc64: Patch sun4v code sequences properly on module load.

2011-11-18T06:44:58+00:00

Some of the sun4v code patching occurs in inline functions visible
to, and usable by, modules.

Therefore we have to patch them up during module load.

Signed-off-by: David S. Miller

sparc: Use popc when possible for ffs/__ffs/ffz.

2011-08-03T04:28:53+00:00

Signed-off-by: David S. Miller

sparc: Use popc if possible for hweight routines.

2011-08-03T04:28:50+00:00

Just like powerpc, we code patch at boot time.

Signed-off-by: David S. Miller

sparc64: rename virt_irq => irq - I

2011-03-17T01:19:03+00:00

The generic irq support uses the term 'irq' for the
allocated irq number.
Fix it so sparc64 use the same term for an irq as the
generic irq support does.
For a naive reader this is less confusing.

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc64: Kill off old sys_perfctr system call and state.

2010-03-03T16:08:49+00:00

People should be using the perf events interfaces, and
the way these system call facilities used the %pcr conflicts
with the usage of the NMI watchdog and perf events.

Signed-off-by: David S. Miller

sparc: fix sparse warnings in irq_32.c

2008-12-08T09:08:24+00:00

Fix following sparse warnings:
symbol 'static_irqaction' was not declared. Should it be static?
symbol 'static_irq_count' was not declared. Should it be static?
symbol 'irq_action_lock' was not declared. Should it be static?
symbol 'unexpected_irq' was not declared. Should it be static?
symbol 'handler_irq' was not declared. Should it be static?
returning void-valued expression
returning void-valued expression
returning void-valued expression
symbol 'init_IRQ' was not declared. Should it be static?

Warnings were fixed by addding proper declarations
and fixing return path of a few functions.

There remains several warnings all related to the floppy driver.

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: fix sparse warnings in traps_32.c

2008-12-08T09:04:59+00:00

o add decalrations to entry.h for functions only used from assembler
o add declaratiosn to kernel.h for functions only used from .c
o removed unused functions/extern declarations

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: fix sparse warnings in cpu_*.c

2008-12-07T08:02:08+00:00

o declare variables from cpu_*.c
o declare function from cpu_32.c

To do this introduce a new header "kernel.h" which is local to kernel/

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller