1TRACE_SOFTIRQ_ENTRY(9)                IRQ               TRACE_SOFTIRQ_ENTRY(9)
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NAME

6       trace_softirq_entry - called immediately before the softirq handler
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SYNOPSIS

9       void trace_softirq_entry(struct softirq_action * h,
10                                struct softirq_action * vec);
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ARGUMENTS

13       h
14           pointer to struct softirq_action
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16       vec
17           pointer to first struct softirq_action in softirq_vec array
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DESCRIPTION

20       The h parameter, contains a pointer to the struct softirq_action which
21       has a pointer to the action handler that is called. By subtracting the
22       vec pointer from the h pointer, we can determine the softirq number.
23       Also, when used in combination with the softirq_exit tracepoint we can
24       determine the softirq latency.
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AUTHOR

27       Jason Baron <jbaron@redhat.com>
28           Author.
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31Kernel Hackers Manual 2.6.         June 2019            TRACE_SOFTIRQ_ENTRY(9)
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