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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-01 00:52:01 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-09 00:55:00 +0100 |
| commit | 7450f6f03e9d6dc95d2014c4cceac8adf98560e8 (patch) | |
| tree | f3d7f8b2de2cb1fe3a7d4b683b944a9ad4040ea0 /arch | |
| parent | powerpc: Remove legacy iSeries bits from assembly files (diff) | |
| download | linux-7450f6f03e9d6dc95d2014c4cceac8adf98560e8.tar.xz linux-7450f6f03e9d6dc95d2014c4cceac8adf98560e8.zip | |
powerpc: Use the same interrupt prolog for perfmon as other interrupts
The perfmon interrupt is the sole user of a special variant of the
interrupt prolog which differs from the one used by external and timer
interrupts in that it saves the non-volatile GPRs and doesn't turn the
runlatch on.
The former is unnecessary and the later is arguably incorrect, so
let's clean that up by using the same prolog. While at it we rename
that prolog to use the _ASYNC prefix.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 17 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 6 |
2 files changed, 6 insertions, 17 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index cc2bcf464746..041b2227967d 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -297,21 +297,10 @@ label##_common: \ /* * Like STD_EXCEPTION_COMMON, but for exceptions that can occur - * in the idle task and therefore need the special idle handling. + * in the idle task and therefore need the special idle handling + * (finish nap and runlatch) */ -#define STD_EXCEPTION_COMMON_IDLE(trap, label, hdlr) \ - .align 7; \ - .globl label##_common; \ -label##_common: \ - EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \ - FINISH_NAP; \ - DISABLE_INTS; \ - bl .save_nvgprs; \ - addi r3,r1,STACK_FRAME_OVERHEAD; \ - bl hdlr; \ - b .ret_from_except - -#define STD_EXCEPTION_COMMON_LITE(trap, label, hdlr) \ +#define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \ .align 7; \ .globl label##_common; \ label##_common: \ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index fea8a69df4b2..2240d4ecec02 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -458,15 +458,15 @@ machine_check_common: bl .machine_check_exception b .ret_from_except - STD_EXCEPTION_COMMON_LITE(0x500, hardware_interrupt, do_IRQ) - STD_EXCEPTION_COMMON_LITE(0x900, decrementer, .timer_interrupt) + STD_EXCEPTION_COMMON_ASYNC(0x500, hardware_interrupt, do_IRQ) + STD_EXCEPTION_COMMON_ASYNC(0x900, decrementer, .timer_interrupt) STD_EXCEPTION_COMMON(0xa00, trap_0a, .unknown_exception) STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception) STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception) STD_EXCEPTION_COMMON(0xe00, trap_0e, .unknown_exception) STD_EXCEPTION_COMMON(0xe40, emulation_assist, .program_check_exception) STD_EXCEPTION_COMMON(0xe60, hmi_exception, .unknown_exception) - STD_EXCEPTION_COMMON_IDLE(0xf00, performance_monitor, .performance_monitor_exception) + STD_EXCEPTION_COMMON_ASYNC(0xf00, performance_monitor, .performance_monitor_exception) STD_EXCEPTION_COMMON(0x1300, instruction_breakpoint, .instruction_breakpoint_exception) #ifdef CONFIG_ALTIVEC STD_EXCEPTION_COMMON(0x1700, altivec_assist, .altivec_assist_exception) |