1. 根目录:
2. samples
3. tracepoints
4. Makefile

# builds the tracepoint example kernel modules;
# then to use one (as root):  insmod <module_name.ko>

obj-$(CONFIG_SAMPLE_TRACEPOINTS) += tracepoint-sample.o
obj-$(CONFIG_SAMPLE_TRACEPOINTS) += tracepoint-probe-sample.o
obj-$(CONFIG_SAMPLE_TRACEPOINTS) += tracepoint-probe-sample2.o