mirror of https://gitee.com/openkylin/linux.git
Merge branch 'for-rmk-2.6.32' of git://git.pengutronix.de/git/ukl/linux-2.6 into devel-stable
This commit is contained in:
Russell King
Russell King
commit
9b2616c2e8
115
arch/arm/Kconfig
115
arch/arm/Kconfig
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@ -965,18 +965,7 @@ config LOCAL_TIMERS
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accounting to be spread across the timer interval, preventing a
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"thundering herd" at every timer tick.
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config PREEMPT
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bool "Preemptible Kernel (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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help
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This option reduces the latency of the kernel when reacting to
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real-time or interactive events by allowing a low priority process to
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be preempted even if it is in kernel mode executing a system call.
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This allows applications to run more reliably even when the system is
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under load.
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Say Y here if you are building a kernel for a desktop, embedded
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or real-time system. Say N if you are unsure.
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source kernel/Kconfig.preempt
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config HZ
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int
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@ -1395,107 +1384,7 @@ endmenu
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source "net/Kconfig"
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menu "Device Drivers"
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source "drivers/base/Kconfig"
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source "drivers/connector/Kconfig"
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if ALIGNMENT_TRAP || !CPU_CP15_MMU
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source "drivers/mtd/Kconfig"
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endif
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source "drivers/parport/Kconfig"
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source "drivers/pnp/Kconfig"
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source "drivers/block/Kconfig"
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# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
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source "drivers/misc/Kconfig"
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source "drivers/ide/Kconfig"
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source "drivers/scsi/Kconfig"
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source "drivers/ata/Kconfig"
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source "drivers/md/Kconfig"
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source "drivers/message/fusion/Kconfig"
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source "drivers/ieee1394/Kconfig"
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source "drivers/message/i2o/Kconfig"
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source "drivers/net/Kconfig"
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source "drivers/isdn/Kconfig"
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# input before char - char/joystick depends on it. As does USB.
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source "drivers/input/Kconfig"
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source "drivers/char/Kconfig"
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source "drivers/i2c/Kconfig"
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source "drivers/spi/Kconfig"
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source "drivers/gpio/Kconfig"
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source "drivers/w1/Kconfig"
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source "drivers/power/Kconfig"
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source "drivers/hwmon/Kconfig"
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source "drivers/thermal/Kconfig"
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source "drivers/watchdog/Kconfig"
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source "drivers/ssb/Kconfig"
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#source "drivers/l3/Kconfig"
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source "drivers/mfd/Kconfig"
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source "drivers/media/Kconfig"
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source "drivers/video/Kconfig"
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source "sound/Kconfig"
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source "drivers/hid/Kconfig"
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source "drivers/usb/Kconfig"
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source "drivers/uwb/Kconfig"
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source "drivers/mmc/Kconfig"
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source "drivers/memstick/Kconfig"
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source "drivers/accessibility/Kconfig"
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source "drivers/leds/Kconfig"
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source "drivers/rtc/Kconfig"
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source "drivers/dma/Kconfig"
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source "drivers/dca/Kconfig"
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source "drivers/auxdisplay/Kconfig"
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source "drivers/regulator/Kconfig"
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source "drivers/uio/Kconfig"
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source "drivers/staging/Kconfig"
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endmenu
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source "drivers/Kconfig"
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source "fs/Kconfig"
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@ -74,23 +74,56 @@
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* Enable and disable interrupts
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*/
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#if __LINUX_ARM_ARCH__ >= 6
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.macro disable_irq
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.macro disable_irq_notrace
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cpsid i
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.endm
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.macro enable_irq
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.macro enable_irq_notrace
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cpsie i
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.endm
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#else
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.macro disable_irq
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.macro disable_irq_notrace
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msr cpsr_c, #PSR_I_BIT | SVC_MODE
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.endm
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.macro enable_irq
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.macro enable_irq_notrace
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msr cpsr_c, #SVC_MODE
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.endm
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#endif
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.macro asm_trace_hardirqs_off
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#if defined(CONFIG_TRACE_IRQFLAGS)
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stmdb sp!, {r0-r3, ip, lr}
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bl trace_hardirqs_off
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ldmia sp!, {r0-r3, ip, lr}
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#endif
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.endm
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.macro asm_trace_hardirqs_on_cond, cond
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#if defined(CONFIG_TRACE_IRQFLAGS)
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/*
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* actually the registers should be pushed and pop'd conditionally, but
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* after bl the flags are certainly clobbered
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*/
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stmdb sp!, {r0-r3, ip, lr}
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bl\cond trace_hardirqs_on
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ldmia sp!, {r0-r3, ip, lr}
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#endif
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.endm
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.macro asm_trace_hardirqs_on
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asm_trace_hardirqs_on_cond al
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.endm
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.macro disable_irq
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disable_irq_notrace
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asm_trace_hardirqs_off
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.endm
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.macro enable_irq
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asm_trace_hardirqs_on
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enable_irq_notrace
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.endm
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/*
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* Save the current IRQ state and disable IRQs. Note that this macro
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* assumes FIQs are enabled, and that the processor is in SVC mode.
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@ -104,10 +137,16 @@
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* Restore interrupt state previously stored in a register. We don't
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* guarantee that this will preserve the flags.
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*/
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.macro restore_irqs, oldcpsr
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.macro restore_irqs_notrace, oldcpsr
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msr cpsr_c, \oldcpsr
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.endm
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.macro restore_irqs, oldcpsr
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tst \oldcpsr, #PSR_I_BIT
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asm_trace_hardirqs_on_cond eq
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restore_irqs_notrace \oldcpsr
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.endm
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#define USER(x...) \
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9999: x; \
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.section __ex_table,"a"; \
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@ -7,6 +7,7 @@
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#ifndef __ASSEMBLY__
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extern void mcount(void);
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extern void __gnu_mcount_nc(void);
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#endif
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#endif
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@ -186,4 +186,5 @@ EXPORT_SYMBOL(_find_next_bit_be);
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#ifdef CONFIG_FUNCTION_TRACER
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EXPORT_SYMBOL(mcount);
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EXPORT_SYMBOL(__gnu_mcount_nc);
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#endif
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@ -161,6 +161,8 @@ ENDPROC(__und_invalid)
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@ r4 - orig_r0 (see pt_regs definition in ptrace.h)
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@
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stmia r5, {r0 - r4}
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asm_trace_hardirqs_off
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.endm
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.align 5
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@ -215,9 +217,6 @@ ENDPROC(__dabt_svc)
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__irq_svc:
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svc_entry
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#ifdef CONFIG_TRACE_IRQFLAGS
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bl trace_hardirqs_off
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#endif
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#ifdef CONFIG_PREEMPT
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get_thread_info tsk
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ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
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@ -391,6 +390,8 @@ ENDPROC(__pabt_svc)
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@ Clear FP to mark the first stack frame
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@
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zero_fp
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asm_trace_hardirqs_off
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.endm
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.macro kuser_cmpxchg_check
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@ -445,9 +446,6 @@ __irq_usr:
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usr_entry
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kuser_cmpxchg_check
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#ifdef CONFIG_TRACE_IRQFLAGS
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bl trace_hardirqs_off
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#endif
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get_thread_info tsk
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#ifdef CONFIG_PREEMPT
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ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
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@ -118,6 +118,25 @@ ftrace_call:
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#else
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ENTRY(__gnu_mcount_nc)
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stmdb sp!, {r0-r3, lr}
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ldr r0, =ftrace_trace_function
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ldr r2, [r0]
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adr r0, ftrace_stub
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cmp r0, r2
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bne gnu_trace
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ldmia sp!, {r0-r3, ip, lr}
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bx ip
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gnu_trace:
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ldr r1, [sp, #20] @ lr of instrumented routine
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mov r0, lr
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sub r0, r0, #MCOUNT_INSN_SIZE
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mov lr, pc
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mov pc, r2
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ldmia sp!, {r0-r3, ip, lr}
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bx ip
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ENTRY(mcount)
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stmdb sp!, {r0-r3, lr}
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ldr r0, =ftrace_trace_function
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@ -60,8 +60,8 @@
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tst r2, r0, lsl r3
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\instr r2, r2, r0, lsl r3
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\store r2, [r1]
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restore_irqs ip
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moveq r0, #0
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restore_irqs ip
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mov pc, lr
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.endm
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#endif
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@ -24,15 +24,13 @@
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.endm
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.macro get_irqnr_preamble, base, tmp
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ldr \base, =io_p2v(0x001ff000)
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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mov \base, #io_p2v(0x00100000)
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add \base, \base, #0x000ff000
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ldr \irqstat, [\base, #0]
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clz \irqnr, \irqstat
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rsb \irqnr, \irqnr, #31
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