forked from luck/tmp_suning_uos_patched
Merge branch 'tip/tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
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commit
5fb896a4e9
@ -14,17 +14,4 @@ typedef struct {
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void ack_bad_irq(unsigned int irq);
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#define HARDIRQ_BITS 12
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/*
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* The hardirq mask has to be large enough to have
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* space for potentially nestable IRQ sources in the system
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* to nest on a single CPU. On Alpha, interrupts are masked at the CPU
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* by IPL as well as at the system level. We only have 8 IPLs (UNIX PALcode)
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* so we really only have 8 nestable IRQs, but allow some overhead
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*/
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#if (1 << HARDIRQ_BITS) < 16
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#error HARDIRQ_BITS is too low!
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#endif
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#endif /* _ALPHA_HARDIRQ_H */
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@ -20,15 +20,4 @@ void ack_bad_irq(unsigned int irq);
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#endif /* __ASSEMBLY__ */
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#define HARDIRQ_BITS 12
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/*
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* The hardirq mask has to be large enough to have
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* space for potentially all IRQ sources in the system
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* nesting on a single CPU:
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*/
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#if (1 << HARDIRQ_BITS) < NR_IRQS
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# error HARDIRQ_BITS is too low!
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#endif
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#endif /* __ASM_AVR32_HARDIRQ_H */
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@ -20,16 +20,6 @@
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#define local_softirq_pending() (local_cpu_data->softirq_pending)
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#define HARDIRQ_BITS 14
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/*
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* The hardirq mask has to be large enough to have space for potentially all IRQ sources
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* in the system nesting on a single CPU:
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*/
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#if (1 << HARDIRQ_BITS) < NR_IRQS
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# error HARDIRQ_BITS is too low!
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#endif
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extern void __iomem *ipi_base_addr;
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void ack_bad_irq(unsigned int irq);
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@ -15,61 +15,61 @@
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* - bits 0-7 are the preemption count (max preemption depth: 256)
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* - bits 8-15 are the softirq count (max # of softirqs: 256)
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*
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* The hardirq count can be overridden per architecture, the default is:
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* The hardirq count can in theory reach the same as NR_IRQS.
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* In reality, the number of nested IRQS is limited to the stack
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* size as well. For archs with over 1000 IRQS it is not practical
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* to expect that they will all nest. We give a max of 10 bits for
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* hardirq nesting. An arch may choose to give less than 10 bits.
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* m68k expects it to be 8.
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*
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* - bits 16-27 are the hardirq count (max # of hardirqs: 4096)
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* - ( bit 28 is the PREEMPT_ACTIVE flag. )
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* - bits 16-25 are the hardirq count (max # of nested hardirqs: 1024)
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* - bit 26 is the NMI_MASK
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* - bit 28 is the PREEMPT_ACTIVE flag
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*
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* PREEMPT_MASK: 0x000000ff
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* SOFTIRQ_MASK: 0x0000ff00
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* HARDIRQ_MASK: 0x0fff0000
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* HARDIRQ_MASK: 0x03ff0000
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* NMI_MASK: 0x04000000
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*/
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#define PREEMPT_BITS 8
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#define SOFTIRQ_BITS 8
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#define NMI_BITS 1
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#define MAX_HARDIRQ_BITS 10
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#ifndef HARDIRQ_BITS
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#define HARDIRQ_BITS 12
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#ifndef MAX_HARDIRQS_PER_CPU
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#define MAX_HARDIRQS_PER_CPU NR_IRQS
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# define HARDIRQ_BITS MAX_HARDIRQ_BITS
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#endif
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/*
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* The hardirq mask has to be large enough to have space for potentially
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* all IRQ sources in the system nesting on a single CPU.
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*/
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#if (1 << HARDIRQ_BITS) < MAX_HARDIRQS_PER_CPU
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# error HARDIRQ_BITS is too low!
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#endif
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#if HARDIRQ_BITS > MAX_HARDIRQ_BITS
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#error HARDIRQ_BITS too high!
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#endif
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#define PREEMPT_SHIFT 0
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#define SOFTIRQ_SHIFT (PREEMPT_SHIFT + PREEMPT_BITS)
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#define HARDIRQ_SHIFT (SOFTIRQ_SHIFT + SOFTIRQ_BITS)
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#define NMI_SHIFT (HARDIRQ_SHIFT + HARDIRQ_BITS)
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#define __IRQ_MASK(x) ((1UL << (x))-1)
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#define PREEMPT_MASK (__IRQ_MASK(PREEMPT_BITS) << PREEMPT_SHIFT)
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#define SOFTIRQ_MASK (__IRQ_MASK(SOFTIRQ_BITS) << SOFTIRQ_SHIFT)
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#define HARDIRQ_MASK (__IRQ_MASK(HARDIRQ_BITS) << HARDIRQ_SHIFT)
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#define NMI_MASK (__IRQ_MASK(NMI_BITS) << NMI_SHIFT)
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#define PREEMPT_OFFSET (1UL << PREEMPT_SHIFT)
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#define SOFTIRQ_OFFSET (1UL << SOFTIRQ_SHIFT)
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#define HARDIRQ_OFFSET (1UL << HARDIRQ_SHIFT)
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#define NMI_OFFSET (1UL << NMI_SHIFT)
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#if PREEMPT_ACTIVE < (1 << (HARDIRQ_SHIFT + HARDIRQ_BITS))
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#if PREEMPT_ACTIVE < (1 << (NMI_SHIFT + NMI_BITS))
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#error PREEMPT_ACTIVE is too low!
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#endif
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#define NMI_OFFSET (PREEMPT_ACTIVE << 1)
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#if NMI_OFFSET >= 0x80000000
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#error PREEMPT_ACTIVE too high!
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#endif
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#define hardirq_count() (preempt_count() & HARDIRQ_MASK)
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#define softirq_count() (preempt_count() & SOFTIRQ_MASK)
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#define irq_count() (preempt_count() & (HARDIRQ_MASK | SOFTIRQ_MASK))
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#define irq_count() (preempt_count() & (HARDIRQ_MASK | SOFTIRQ_MASK \
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| NMI_MASK))
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/*
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* Are we doing bottom half or hardware interrupt processing?
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@ -82,7 +82,7 @@
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/*
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* Are we in NMI context?
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*/
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#define in_nmi() (preempt_count() & NMI_OFFSET)
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#define in_nmi() (preempt_count() & NMI_MASK)
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#if defined(CONFIG_PREEMPT)
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# define PREEMPT_INATOMIC_BASE kernel_locked()
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@ -175,24 +175,24 @@ extern void irq_enter(void);
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*/
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extern void irq_exit(void);
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#define nmi_enter() \
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do { \
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ftrace_nmi_enter(); \
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BUG_ON(in_nmi()); \
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add_preempt_count(NMI_OFFSET); \
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lockdep_off(); \
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rcu_nmi_enter(); \
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__irq_enter(); \
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#define nmi_enter() \
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do { \
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ftrace_nmi_enter(); \
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BUG_ON(in_nmi()); \
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add_preempt_count(NMI_OFFSET + HARDIRQ_OFFSET); \
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lockdep_off(); \
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rcu_nmi_enter(); \
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trace_hardirq_enter(); \
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} while (0)
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#define nmi_exit() \
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do { \
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__irq_exit(); \
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rcu_nmi_exit(); \
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lockdep_on(); \
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BUG_ON(!in_nmi()); \
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sub_preempt_count(NMI_OFFSET); \
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ftrace_nmi_exit(); \
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#define nmi_exit() \
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do { \
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trace_hardirq_exit(); \
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rcu_nmi_exit(); \
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lockdep_on(); \
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BUG_ON(!in_nmi()); \
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sub_preempt_count(NMI_OFFSET + HARDIRQ_OFFSET); \
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ftrace_nmi_exit(); \
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} while (0)
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#endif /* LINUX_HARDIRQ_H */
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