[systemtap.git] / testsuite / semok / entry03.stp

#! stap -Wp2

# This causes a mix of kretprobe-data-pouch and global-map
# approaches for saving entry values.
#
# During development I found that kretprobe would add a call block without
# setting up _dwarf_tvar_tid, and then global-map would neglect to create the
# tid as it appended.
#
# We try it in both orders here to make sure they don't interfere either way.

probe kernel.function("do_filp_open").return {
    println(kernel_string(@defined($pathname) ? $pathname : $filename))
    println(get_cycles() - @entry(get_cycles()))
}

probe kernel.function("do_filp_open").return {
    println(get_cycles() - @entry(get_cycles()))
    println(kernel_string(@defined($pathname) ? $pathname : $filename))
}
Commit	Line	Data
8cc799a5 JS	1	#! stap -Wp2
	2
	3	# This causes a mix of kretprobe-data-pouch and global-map
	4	# approaches for saving entry values.
	5	#
	6	# During development I found that kretprobe would add a call block without
	7	# setting up _dwarf_tvar_tid, and then global-map would neglect to create the
	8	# tid as it appended.
	9	#
	10	# We try it in both orders here to make sure they don't interfere either way.
	11
	12	probe kernel.function("do_filp_open").return {
04244729	13	println(kernel_string(@defined($pathname) ? $pathname : $filename))
8cc799a5 JS	14	println(get_cycles() - @entry(get_cycles()))
	15	}
	16
	17	probe kernel.function("do_filp_open").return {
	18	println(get_cycles() - @entry(get_cycles()))
04244729	19	println(kernel_string(@defined($pathname) ? $pathname : $filename))
8cc799a5	20	}