linux-stable.git/arch/mips/kernel/idle.c, branch linux-3.13.y

MIPS: Optimize current_cpu_type() for better code.

2013-09-17T16:50:53+00:00

 o Move current_cpu_type() to a separate header file
 o #ifdefing on supported CPU types lets modern GCC know that certain
   code in callers may be discarded ideally turning current_cpu_type() into
   a function returning a constant.
 o Use current_cpu_type() rather than direct access to struct cpuinfo_mips.

Signed-off-by: Ralf Baechle 
Cc: Steven J. Hill 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5833/

MIPS: Use r4k_wait for OCTEON3 CPUs.

2013-08-26T13:31:53+00:00

Signed-off-by: David Daney 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5636/
Signed-off-by: Ralf Baechle

MIPS: Alchemy: fix wait function

2013-06-10T15:59:46+00:00

Only an interrupt can wake the core from 'wait', enable interrupts
locally before executing 'wait'.

[ralf@linux-mips.org: This leave the race between an interrupt that's
setting TIF_NEED_RESCHEd and entering the WAIT status. but at least it's
going to bring Alchemy back from the dead, so I'm going to apply this
patch.]

Signed-off-by: Manuel Lauss 
Cc: Linux-MIPS 
Cc: Maciej W. Rozycki 
Patchwork: https://patchwork.linux-mips.org/patch/5408/
Signed-off-by: Ralf Baechle

MIPS: Idle: Break r4k_wait into two functions and fix it.

2013-05-21T23:34:28+00:00

local_irq_enable() may expand into very different code, so it rather should
stay in C.  Also this keeps the assembler code size constant which keeps
the rollback code simple.  So it's best to split r4k_wait into two parts,
one C and one assembler.

Finally add the local_irq_enable() to r4k_wait to ensure the WAIT
instruction in __r4k_wait() will work properly.

Signed-off-by: Ralf Baechle

MIPS: Idle: Consolidate all declarations in .

2013-05-21T23:34:27+00:00

Signed-off-by: Ralf Baechle

MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations.

2013-05-21T23:34:27+00:00

The generic idle loop has already disabled interrupts so this is redundant.

Signed-off-by: Ralf Baechle

MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait.

2013-05-21T23:34:26+00:00

Without this, the

    WARN_ON_ONCE(irqs_disabled());

in the idle loop will be triggered.

Signed-off-by: Ralf Baechle

MIPS: Idle: Make call of function pointer readable.

2013-05-21T23:34:26+00:00

Signed-off-by: Ralf Baechle

MIPS: Idle: Consistently reformat inline assembler.

2013-05-21T23:34:25+00:00

Signed-off-by: Ralf Baechle

MIPS: Idle: cleaup SMTC idle hook as per Linux coding style.

2013-05-21T23:34:25+00:00

Signed-off-by: Ralf Baechle