irq/tracing: Export enums in tracepoints to user space (f0a91b3c) · Commits · 戴 / test

The enums used by the softirq mapping is what is shown in the output of the __print_symbolic() and not their values, that are needed to map them to their strings. Export them to userspace with the TRACE_DEFINE_ENUM() macro so that user space tools can map the enums with their values. Link: http://lkml.kernel.org/r/20150403013802.220157513@goodmis.org Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Reviewed-by:

Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by:

Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by:

Steven Rostedt <rostedt@goodmis.org>

include/trace/events/irq.h

+27 −12

Original line number	Diff line number	Diff line
		@@ -9,19 +9,34 @@
		struct irqaction;
		struct softirq_action;

		#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
		#define SOFTIRQ_NAME_LIST \
		softirq_name(HI) \
		softirq_name(TIMER) \
		softirq_name(NET_TX) \
		softirq_name(NET_RX) \
		softirq_name(BLOCK) \
		softirq_name(BLOCK_IOPOLL) \
		softirq_name(TASKLET) \
		softirq_name(SCHED) \
		softirq_name(HRTIMER) \
		softirq_name_end(RCU)

		#undef softirq_name
		#undef softirq_name_end

		#define softirq_name(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);
		#define softirq_name_end(sirq) TRACE_DEFINE_ENUM(sirq##_SOFTIRQ);

		SOFTIRQ_NAME_LIST

		#undef softirq_name
		#undef softirq_name_end

		#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq },
		#define softirq_name_end(sirq) { sirq##_SOFTIRQ, #sirq }

		#define show_softirq_name(val) \
		__print_symbolic(val, \
		softirq_name(HI), \
		softirq_name(TIMER), \
		softirq_name(NET_TX), \
		softirq_name(NET_RX), \
		softirq_name(BLOCK), \
		softirq_name(BLOCK_IOPOLL), \
		softirq_name(TASKLET), \
		softirq_name(SCHED), \
		softirq_name(HRTIMER), \
		softirq_name(RCU))
		__print_symbolic(val, SOFTIRQ_NAME_LIST)

		/**
		* irq_handler_entry - called immediately before the irq action handler

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