mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2025-12-22 12:17:45 +01:00
f93a7d0cac
There is times when tracing the tracing infrastructure can be useful for debugging the tracing code. Currently all files in the tracing directory are set to "notrace" the functions. Add a new config option FUNCTION_SELF_TRACING that will allow some of the files in the tracing infrastructure to be traced. It requires a config to enable because it will add noise to the function tracer if events and other tracing features are enabled. Tracing functions and events together is quite common, so not tracing the event code should be the default. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Tom Zanussi <zanussi@kernel.org> Link: https://patch.msgid.link/20251120181514.736f2d5f@gandalf.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
131 lines
4.5 KiB
Makefile
131 lines
4.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
# Do not instrument the tracer itself:
|
|
|
|
ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
|
|
|
|
ifdef CONFIG_FUNCTION_TRACER
|
|
|
|
# Avoid recursion due to instrumentation.
|
|
KCSAN_SANITIZE := n
|
|
|
|
ifdef CONFIG_FTRACE_SELFTEST
|
|
# selftest needs instrumentation
|
|
CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE)
|
|
obj-y += trace_selftest_dynamic.o
|
|
endif
|
|
endif
|
|
|
|
# Allow some files to be function traced
|
|
ifdef CONFIG_FUNCTION_SELF_TRACING
|
|
CFLAGS_trace_output.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_seq.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_stat.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_tracing_map.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_synth_event_gen_test.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_syscalls.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events_filter.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events_trigger.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events_synth.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events_hist.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_events_user.o = $(CC_FLAGS_FTRACE)
|
|
CFLAGS_trace_dynevent.o = $(CC_FLAGS_FTRACE)
|
|
endif
|
|
|
|
ifdef CONFIG_FTRACE_STARTUP_TEST
|
|
CFLAGS_trace_kprobe_selftest.o = $(CC_FLAGS_FTRACE)
|
|
obj-$(CONFIG_KPROBE_EVENTS) += trace_kprobe_selftest.o
|
|
endif
|
|
|
|
# If unlikely tracing is enabled, do not trace these files
|
|
ifdef CONFIG_TRACING_BRANCHES
|
|
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
|
|
endif
|
|
|
|
# for GCOV coverage profiling
|
|
ifdef CONFIG_GCOV_PROFILE_FTRACE
|
|
GCOV_PROFILE := y
|
|
endif
|
|
|
|
# Functions in this file could be invoked from early interrupt
|
|
# code and produce random code coverage.
|
|
KCOV_INSTRUMENT_trace_preemptirq.o := n
|
|
|
|
CFLAGS_bpf_trace.o := -I$(src)
|
|
|
|
CFLAGS_trace_benchmark.o := -I$(src)
|
|
CFLAGS_trace_events_filter.o := -I$(src)
|
|
|
|
obj-$(CONFIG_TRACE_CLOCK) += trace_clock.o
|
|
|
|
obj-$(CONFIG_FUNCTION_TRACER) += libftrace.o
|
|
obj-$(CONFIG_RING_BUFFER) += ring_buffer.o
|
|
obj-$(CONFIG_RING_BUFFER_BENCHMARK) += ring_buffer_benchmark.o
|
|
|
|
obj-$(CONFIG_TRACING) += trace.o
|
|
obj-$(CONFIG_TRACING) += trace_output.o
|
|
obj-$(CONFIG_TRACING) += trace_seq.o
|
|
obj-$(CONFIG_TRACING) += trace_stat.o
|
|
obj-$(CONFIG_TRACING) += trace_printk.o
|
|
obj-$(CONFIG_TRACING) += pid_list.o
|
|
obj-$(CONFIG_TRACING_MAP) += tracing_map.o
|
|
obj-$(CONFIG_PREEMPTIRQ_DELAY_TEST) += preemptirq_delay_test.o
|
|
obj-$(CONFIG_SYNTH_EVENT_GEN_TEST) += synth_event_gen_test.o
|
|
obj-$(CONFIG_KPROBE_EVENT_GEN_TEST) += kprobe_event_gen_test.o
|
|
obj-$(CONFIG_CONTEXT_SWITCH_TRACER) += trace_sched_switch.o
|
|
obj-$(CONFIG_FUNCTION_TRACER) += trace_functions.o
|
|
obj-$(CONFIG_PREEMPTIRQ_TRACEPOINTS) += trace_preemptirq.o
|
|
obj-$(CONFIG_IRQSOFF_TRACER) += trace_irqsoff.o
|
|
obj-$(CONFIG_PREEMPT_TRACER) += trace_irqsoff.o
|
|
obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o
|
|
obj-$(CONFIG_HWLAT_TRACER) += trace_hwlat.o
|
|
obj-$(CONFIG_OSNOISE_TRACER) += trace_osnoise.o
|
|
obj-$(CONFIG_NOP_TRACER) += trace_nop.o
|
|
obj-$(CONFIG_STACK_TRACER) += trace_stack.o
|
|
obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o
|
|
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += trace_functions_graph.o
|
|
obj-$(CONFIG_TRACE_BRANCH_PROFILING) += trace_branch.o
|
|
obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
|
|
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += fgraph.o
|
|
ifeq ($(CONFIG_BLOCK),y)
|
|
obj-$(CONFIG_EVENT_TRACING) += blktrace.o
|
|
endif
|
|
obj-$(CONFIG_EVENT_TRACING) += trace_events.o
|
|
obj-$(CONFIG_EVENT_TRACING) += trace_export.o
|
|
obj-$(CONFIG_FTRACE_SYSCALLS) += trace_syscalls.o
|
|
ifeq ($(CONFIG_PERF_EVENTS),y)
|
|
obj-$(CONFIG_EVENT_TRACING) += trace_event_perf.o
|
|
endif
|
|
obj-$(CONFIG_EVENT_TRACING) += trace_events_filter.o
|
|
obj-$(CONFIG_EVENT_TRACING) += trace_events_trigger.o
|
|
obj-$(CONFIG_EPROBE_EVENTS) += trace_eprobe.o
|
|
obj-$(CONFIG_TRACE_EVENT_INJECT) += trace_events_inject.o
|
|
obj-$(CONFIG_SYNTH_EVENTS) += trace_events_synth.o
|
|
obj-$(CONFIG_HIST_TRIGGERS) += trace_events_hist.o
|
|
obj-$(CONFIG_USER_EVENTS) += trace_events_user.o
|
|
obj-$(CONFIG_BPF_EVENTS) += bpf_trace.o
|
|
obj-$(CONFIG_KPROBE_EVENTS) += trace_kprobe.o
|
|
obj-$(CONFIG_TRACEPOINTS) += error_report-traces.o
|
|
obj-$(CONFIG_TRACEPOINTS) += power-traces.o
|
|
ifeq ($(CONFIG_PM),y)
|
|
obj-$(CONFIG_TRACEPOINTS) += rpm-traces.o
|
|
endif
|
|
ifeq ($(CONFIG_TRACING),y)
|
|
obj-$(CONFIG_KGDB_KDB) += trace_kdb.o
|
|
endif
|
|
obj-$(CONFIG_DYNAMIC_EVENTS) += trace_dynevent.o
|
|
obj-$(CONFIG_PROBE_EVENTS) += trace_probe.o
|
|
obj-$(CONFIG_PROBE_EVENTS_BTF_ARGS) += trace_btf.o
|
|
obj-$(CONFIG_UPROBE_EVENTS) += trace_uprobe.o
|
|
obj-$(CONFIG_BOOTTIME_TRACING) += trace_boot.o
|
|
obj-$(CONFIG_FTRACE_RECORD_RECURSION) += trace_recursion_record.o
|
|
obj-$(CONFIG_FPROBE) += fprobe.o
|
|
obj-$(CONFIG_RETHOOK) += rethook.o
|
|
obj-$(CONFIG_FPROBE_EVENTS) += trace_fprobe.o
|
|
|
|
obj-$(CONFIG_TRACEPOINT_BENCHMARK) += trace_benchmark.o
|
|
obj-$(CONFIG_RV) += rv/
|
|
|
|
libftrace-y := ftrace.o
|