linux - kernel/trace/Makefile

166 lines · 6.1 KiB

1	# SPDX-License-Identifier: GPL-2.0
2
3	# Do not instrument the tracer itself:
4
5	ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
6
7	ifdef CONFIG_FUNCTION_TRACER
8
9	# Avoid recursion due to instrumentation.
10	KCSAN_SANITIZE := n
11
12	ifdef CONFIG_FTRACE_SELFTEST
13	# selftest needs instrumentation
14	CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE)
15	obj-y += trace_selftest_dynamic.o
16	endif
17	endif
18
19	# Allow some files to be function traced
20	ifdef CONFIG_FUNCTION_SELF_TRACING
21	CFLAGS_trace_output.o = $(CC_FLAGS_FTRACE)
22	CFLAGS_trace_seq.o = $(CC_FLAGS_FTRACE)
23	CFLAGS_trace_stat.o = $(CC_FLAGS_FTRACE)
24	CFLAGS_tracing_map.o = $(CC_FLAGS_FTRACE)
25	CFLAGS_synth_event_gen_test.o = $(CC_FLAGS_FTRACE)
26	CFLAGS_trace_events.o = $(CC_FLAGS_FTRACE)
27	CFLAGS_trace_syscalls.o = $(CC_FLAGS_FTRACE)
28	CFLAGS_trace_events_filter.o = $(CC_FLAGS_FTRACE)
29	CFLAGS_trace_events_trigger.o = $(CC_FLAGS_FTRACE)
30	CFLAGS_trace_events_synth.o = $(CC_FLAGS_FTRACE)
31	CFLAGS_trace_events_hist.o = $(CC_FLAGS_FTRACE)
32	CFLAGS_trace_events_user.o = $(CC_FLAGS_FTRACE)
33	CFLAGS_trace_dynevent.o = $(CC_FLAGS_FTRACE)
34	endif
35
36	ifdef CONFIG_FTRACE_STARTUP_TEST
37	CFLAGS_trace_kprobe_selftest.o = $(CC_FLAGS_FTRACE)
38	obj-$(CONFIG_KPROBE_EVENTS) += trace_kprobe_selftest.o
39	endif
40
41	# If unlikely tracing is enabled, do not trace these files
42	ifdef CONFIG_TRACING_BRANCHES
43	KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
44	endif
45
46	# for GCOV coverage profiling
47	ifdef CONFIG_GCOV_PROFILE_FTRACE
48	GCOV_PROFILE := y
49	endif
50
51	# Functions in these files can run from IRQ entry before hardirq context
52	# is visible to KCOV, and produce coverage unrelated to syscall inputs.
53	KCOV_INSTRUMENT_trace_preemptirq.o := n
54	KCOV_INSTRUMENT_trace_irqsoff.o := n
55
56	CFLAGS_bpf_trace.o := -I$(src)
57
58	CFLAGS_trace_benchmark.o := -I$(src)
59	CFLAGS_trace_events_filter.o := -I$(src)
60
61	obj-$(CONFIG_TRACE_CLOCK) += trace_clock.o
62
63	obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o
64	obj-$(CONFIG_RING_BUFFER) += ring_buffer.o
65	obj-$(CONFIG_RING_BUFFER_BENCHMARK) += ring_buffer_benchmark.o
66
67	obj-$(CONFIG_TRACING) += trace.o
68	obj-$(CONFIG_TRACING) += trace_output.o
69	obj-$(CONFIG_TRACING) += trace_seq.o
70	obj-$(CONFIG_TRACING) += trace_stat.o
71	obj-$(CONFIG_TRACING) += trace_printk.o
72	obj-$(CONFIG_TRACING) += trace_pid.o
73	obj-$(CONFIG_TRACER_SNAPSHOT) += trace_snapshot.o
74	obj-$(CONFIG_TRACING) += pid_list.o
75	obj-$(CONFIG_TRACING_MAP) += tracing_map.o
76	obj-$(CONFIG_PREEMPTIRQ_DELAY_TEST) += preemptirq_delay_test.o
77	obj-$(CONFIG_SYNTH_EVENT_GEN_TEST) += synth_event_gen_test.o
78	obj-$(CONFIG_KPROBE_EVENT_GEN_TEST) += kprobe_event_gen_test.o
79	obj-$(CONFIG_CONTEXT_SWITCH_TRACER) += trace_sched_switch.o
80	obj-$(CONFIG_FUNCTION_TRACER) += trace_functions.o
81	obj-$(CONFIG_PREEMPTIRQ_TRACEPOINTS) += trace_preemptirq.o
82	obj-$(CONFIG_IRQSOFF_TRACER) += trace_irqsoff.o
83	obj-$(CONFIG_PREEMPT_TRACER) += trace_irqsoff.o
84	obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o
85	obj-$(CONFIG_HWLAT_TRACER) += trace_hwlat.o
86	obj-$(CONFIG_OSNOISE_TRACER) += trace_osnoise.o
87	obj-$(CONFIG_NOP_TRACER) += trace_nop.o
88	obj-$(CONFIG_STACK_TRACER) += trace_stack.o
89	obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o
90	obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += trace_functions_graph.o
91	obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_branch.o
92	obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
93	obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += fgraph.o
94	ifeq ($(CONFIG_BLOCK),y)
95	obj-$(CONFIG_EVENT_TRACING) += blktrace.o
96	endif
97	obj-$(CONFIG_EVENT_TRACING) += trace_events.o
98	obj-$(CONFIG_EVENT_TRACING) += trace_export.o
99	obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
100	ifeq ($(CONFIG_PERF_EVENTS),y)
101	obj-$(CONFIG_EVENT_TRACING) += trace_event_perf.o
102	endif
103	obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
104	obj-$(CONFIG_EVENT_TRACING) += trace_events_trigger.o
105	obj-$(CONFIG_EPROBE_EVENTS) += trace_eprobe.o
106	obj-$(CONFIG_TRACE_EVENT_INJECT) += trace_events_inject.o
107	obj-$(CONFIG_SYNTH_EVENTS) += trace_events_synth.o
108	obj-$(CONFIG_HIST_TRIGGERS) += trace_events_hist.o
109	obj-$(CONFIG_USER_EVENTS) += trace_events_user.o
110	obj-$(CONFIG_BPF_EVENTS) += bpf_trace.o
111	obj-$(CONFIG_KPROBE_EVENTS) += trace_kprobe.o
112	obj-$(CONFIG_TRACEPOINTS) += error_report-traces.o
113	obj-$(CONFIG_TRACEPOINTS) += power-traces.o
114	ifeq ($(CONFIG_PM),y)
115	obj-$(CONFIG_TRACEPOINTS) += rpm-traces.o
116	endif
117	ifeq ($(CONFIG_TRACING),y)
118	obj-$(CONFIG_KGDB_KDB) += trace_kdb.o
119	endif
120	obj-$(CONFIG_DYNAMIC_EVENTS) += trace_dynevent.o
121	obj-$(CONFIG_PROBE_EVENTS) += trace_probe.o
122	obj-$(CONFIG_PROBE_EVENTS_BTF_ARGS) += trace_btf.o
123	obj-$(CONFIG_UPROBE_EVENTS) += trace_uprobe.o
124	obj-$(CONFIG_BOOTTIME_TRACING) += trace_boot.o
125	obj-$(CONFIG_FTRACE_RECORD_RECURSION) += trace_recursion_record.o
126	obj-$(CONFIG_FPROBE) += fprobe.o
127	obj-$(CONFIG_RETHOOK) += rethook.o
128	obj-$(CONFIG_FPROBE_EVENTS) += trace_fprobe.o
129
130	obj-$(CONFIG_TRACEPOINT_BENCHMARK) += trace_benchmark.o
131	obj-$(CONFIG_RV) += rv/
132
133	obj-$(CONFIG_TRACE_REMOTE) += trace_remote.o
134	obj-$(CONFIG_SIMPLE_RING_BUFFER) += simple_ring_buffer.o
135	obj-$(CONFIG_TRACE_REMOTE_TEST) += remote_test.o
136
137	# simple_ring_buffer is used by the pKVM hypervisor which does not have access
138	# to all kernel symbols. Fail the build if forbidden symbols are found.
139
140	# Basic compiler and tooling-generated symbols that can safely be left
141	# undefined. Ensure KASAN is enabled to avoid logic that may disable
142	# FORTIFY_SOURCE when KASAN is not enabled. undefsyms_base.o does not
143	# automatically get KASAN flags because it is not linked into vmlinux.
144	targets += undefsyms_base.o
145	KASAN_SANITIZE_undefsyms_base.o := y
146
147	UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov __sanitizer __tsan __ubsan __msan \
148	__aeabi_unwind_cpp __s390_indirect_jump __x86_indirect_thunk simple_ring_buffer \
149	$(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null \| awk '{print $$2}')
150
151	quiet_cmd_check_undefined = NM $<
152	cmd_check_undefined = \
153	undefsyms=$$($(NM) -u $< \| grep -v $(addprefix -e , $(UNDEFINED_ALLOWLIST)) \|\| true); \
154	if [ -n "$$undefsyms" ]; then \
155	echo "Unexpected symbols in $<:" >&2; \
156	echo "$$undefsyms" >&2; \
157	false; \
158	fi; \
159	touch $@
160
161	$(obj)/%.o.checked: $(obj)/%.o $(obj)/undefsyms_base.o FORCE
162	$(call if_changed,check_undefined)
163
164	always-$(CONFIG_SIMPLE_RING_BUFFER) += simple_ring_buffer.o.checked
165
166	libftrace-y := ftrace.o