mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 01:49:36 +00:00
9c0dee54eb
Patch series "Add error_report_end tracepoint to KFENCE and KASAN", v3. This patchset adds a tracepoint, error_repor_end, that is to be used by KFENCE, KASAN, and potentially other bug detection tools, when they print an error report. One of the possible use cases is userspace collection of kernel error reports: interested parties can subscribe to the tracing event via tracefs, and get notified when an error report occurs. This patch (of 3): Introduce error_report_end tracepoint. It can be used in debugging tools like KASAN, KFENCE, etc. to provide extensions to the error reporting mechanisms (e.g. allow tests hook into error reporting, ease error report collection from production kernels). Another benefit would be making use of ftrace for debugging or benchmarking the tools themselves. Should we need it, the tracepoint name leaves us with the possibility to introduce a complementary error_report_start tracepoint in the future. Link: https://lkml.kernel.org/r/20210121131915.1331302-1-glider@google.com Link: https://lkml.kernel.org/r/20210121131915.1331302-2-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Suggested-by: Marco Elver <elver@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
100 lines
3.3 KiB
Makefile
100 lines
3.3 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
|
|
|
|
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
|
|
|
|
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-$(CONFIG_TRACING_MAP) += tracing_map.o
|
|
obj-$(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_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_TRACE_EVENT_INJECT) += trace_events_inject.o
|
|
obj-$(CONFIG_SYNTH_EVENTS) += trace_events_synth.o
|
|
obj-$(CONFIG_HIST_TRIGGERS) += trace_events_hist.o
|
|
obj-$(CONFIG_BPF_EVENTS) += bpf_trace.o
|
|
obj-$(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-$(CONFIG_UPROBE_EVENTS) += trace_uprobe.o
|
|
obj-$(CONFIG_BOOTTIME_TRACING) += trace_boot.o
|
|
obj-$(CONFIG_FTRACE_RECORD_RECURSION) += trace_recursion_record.o
|
|
|
|
obj-$(CONFIG_TRACEPOINT_BENCHMARK) += trace_benchmark.o
|
|
|
|
libftrace-y := ftrace.o
|