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fce16bc35a
linux/arch/arc/kernel
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Vineet Gupta fce16bc35a ARC: Entry Handler tweaks: Optimize away redundant IRQ_DISABLE_SAVE 
In the exception return path, for both U/K cases, intr are already
disabled (for various existing reasons). So when we drop down to
@restore_regs, we need not redo that.

There was subtle issue - when intr were NOT being disabled for
ret-to-kernel-but-no-preemption case - now fixed by moving the
IRQ_DISABLE further up in @resume_kernel_mode.

So what do we gain:

* Shaves off a few insn in return path.

* Eliminates the need for IRQ_DISABLE_SAVE assembler macro for ARCv2
  hence allows for entry code sharing.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-08-26 09:40:25 +05:30
..
.gitignore ARC: Add some .gitignore entries 2013-08-26 09:40:24 +05:30
arc_hostlink.c ARC: Hostlink Pseudo-Driver for Metaware Debugger 2013-02-15 23:16:10 +05:30
arcksyms.c ARC: Build system: Makefiles, Kconfig, Linker script 2013-02-11 20:00:25 +05:30
asm-offsets.c ARC: pt_regs update #5: Use real ECR for pt_regs->event vs. synth values 2013-06-26 14:04:48 +05:30
clk.c ARC: fix typo with clock speed 2013-05-07 13:43:54 +05:30
ctx_sw_asm.S ARC: Process-creation/scheduling/idle-loop 2013-02-11 20:00:38 +05:30
ctx_sw.c ARC: pt_regs update #3: Remove unused gutter at start of callee_regs 2013-06-22 19:23:22 +05:30
devtree.c ARC: make a copy of flat DT 2013-02-26 14:25:18 +05:30
disasm.c ARC port updates for Linux 3.10 (part 1) 2013-05-09 14:36:27 -07:00
entry.S ARC: Entry Handler tweaks: Optimize away redundant IRQ_DISABLE_SAVE 2013-08-26 09:40:25 +05:30
fpu.c ARC: Process-creation/scheduling/idle-loop 2013-02-11 20:00:38 +05:30
head.S ARC: Setup Vector Table Base in early boot 2013-06-26 15:30:51 +05:30
irq.c arc: delete __cpuinit usage from all arc files 2013-06-27 14:37:58 +05:30
kgdb.c ARC: Remove explicit passing around of ECR 2013-06-26 15:30:50 +05:30
kprobes.c ARC: Remove explicit passing around of ECR 2013-06-26 15:30:50 +05:30
Makefile ARC: Hostlink Pseudo-Driver for Metaware Debugger 2013-02-15 23:16:10 +05:30
module.c ARC: Fix coding style issues 2013-04-09 12:21:14 +05:30
process.c ARC: pt_regs update #5: Use real ECR for pt_regs->event vs. synth values 2013-06-26 14:04:48 +05:30
ptrace.c ARC: pt_regs update #3: Remove unused gutter at start of callee_regs 2013-06-22 19:23:22 +05:30
reset.c ARC: Boot #1: low-level, setup_arch(), /proc/cpuinfo, mem init 2013-02-15 23:15:54 +05:30
setup.c arc: delete __cpuinit usage from all arc files 2013-06-27 14:37:58 +05:30
signal.c ARC: [Review] Prevent incorrect syscall restarts 2013-02-15 23:15:50 +05:30
smp.c arc: delete __cpuinit usage from all arc files 2013-06-27 14:37:58 +05:30
stacktrace.c ARC: pt_regs update #3: Remove unused gutter at start of callee_regs 2013-06-22 19:23:22 +05:30
sys.c ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI 2013-03-11 19:01:10 +05:30
time.c arc: delete __cpuinit usage from all arc files 2013-06-27 14:37:58 +05:30
traps.c ARC: Remove explicit passing around of ECR 2013-06-26 15:30:50 +05:30
troubleshoot.c ARC changes for 3.11 2013-07-03 11:09:27 -07:00
unaligned.c ARC: Remove explicit passing around of ECR 2013-06-26 15:30:50 +05:30
unwind.c ARC: warn on improper stack unwind FDE entries 2013-06-27 14:37:59 +05:30
vmlinux.lds.S ARC: Adjustments for gcc 4.8 2013-06-27 14:35:32 +05:30