On 6/9/15 1:51 PM, Vince Weaver wrote:
# perf record -e irq:irq_handler_entry --filter irq==28 -e irq:softirq_entry
--filter vec==6 -a -- sleep 5
invalid or unsupported event: 'irq:irq_handler_entry'
Run 'perf list' for a list of valid events
perf list doesn't show any tracepoint events, despite having debugfs
mounted and running as root and /sys/kernel/debug/tracing/events/ being
populated.
Do you see this:
# ls /sys/kernel/debug/tracing/events/irq/irq_handler_entry/
enable filter format id trigger
It's used in kernel/irq/handle.c, handle_irq_event_percpu(). As I recall
this tracepoint has been around a long time.
David
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