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#!/usr/bin/stap
#
# Copyright (C) 2018 Red Hat, Inc.
# By William Cohen, Red Hat Inc.
# [email protected]
#
# USAGE: stap syscallbypid.stp --suppress-handler-errors
#
# The "--suppress-handler-errors" option allows the script to continue
# run when probes are skipped. The probe skips make the data less accurate,
# but are otherwise harmless.
global arr%[20000]
global procname%
probe syscall_any {
arr[pid(), syscall_nr]++
procname[pid()] = execname()
}
probe scheduler.process_exit {
delete arr[pid(),*]
delete procname[pid()]
}
function process_name(pid) {
return sprintf("%s[%d]", procname[pid], pid)
}
probe prometheus {
@prometheus_dump_array2_map(arr, "syscall_count", "pid", "name",
sprint, process_name, syscall_name )
}