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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-08-15 16:51:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-08-15 16:51:48 +0100 |
| commit | 9b2616c2e8cc98ca98bbb40cad83a8d3d859e840 (patch) | |
| tree | 5a971fa57298d58529d3ae82b68cbfc7139bde7b /arch/arm/include/asm/assembler.h | |
| parent | 590a94d93475fa6cca257f161ae268ed3a2395b5 (diff) | |
| parent | ac25150f2c55ea26447af0fa1d4e2bb07f97384d (diff) | |
| download | lwn-9b2616c2e8cc98ca98bbb40cad83a8d3d859e840.tar.gz lwn-9b2616c2e8cc98ca98bbb40cad83a8d3d859e840.zip | |
Merge branch 'for-rmk-2.6.32' of git://git.pengutronix.de/git/ukl/linux-2.6 into devel-stable
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 49 |
1 files changed, 44 insertions, 5 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 2b60c7d05770..00f46d9ce299 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -74,23 +74,56 @@ * Enable and disable interrupts */ #if __LINUX_ARM_ARCH__ >= 6 - .macro disable_irq + .macro disable_irq_notrace cpsid i .endm - .macro enable_irq + .macro enable_irq_notrace cpsie i .endm #else - .macro disable_irq + .macro disable_irq_notrace msr cpsr_c, #PSR_I_BIT | SVC_MODE .endm - .macro enable_irq + .macro enable_irq_notrace msr cpsr_c, #SVC_MODE .endm #endif + .macro asm_trace_hardirqs_off +#if defined(CONFIG_TRACE_IRQFLAGS) + stmdb sp!, {r0-r3, ip, lr} + bl trace_hardirqs_off + ldmia sp!, {r0-r3, ip, lr} +#endif + .endm + + .macro asm_trace_hardirqs_on_cond, cond +#if defined(CONFIG_TRACE_IRQFLAGS) + /* + * actually the registers should be pushed and pop'd conditionally, but + * after bl the flags are certainly clobbered + */ + stmdb sp!, {r0-r3, ip, lr} + bl\cond trace_hardirqs_on + ldmia sp!, {r0-r3, ip, lr} +#endif + .endm + + .macro asm_trace_hardirqs_on + asm_trace_hardirqs_on_cond al + .endm + + .macro disable_irq + disable_irq_notrace + asm_trace_hardirqs_off + .endm + + .macro enable_irq + asm_trace_hardirqs_on + enable_irq_notrace + .endm /* * Save the current IRQ state and disable IRQs. Note that this macro * assumes FIQs are enabled, and that the processor is in SVC mode. @@ -104,10 +137,16 @@ * Restore interrupt state previously stored in a register. We don't * guarantee that this will preserve the flags. */ - .macro restore_irqs, oldcpsr + .macro restore_irqs_notrace, oldcpsr msr cpsr_c, \oldcpsr .endm + .macro restore_irqs, oldcpsr + tst \oldcpsr, #PSR_I_BIT + asm_trace_hardirqs_on_cond eq + restore_irqs_notrace \oldcpsr + .endm + #define USER(x...) \ 9999: x; \ .section __ex_table,"a"; \ |