summaryrefslogtreecommitdiff
path: root/include/trace
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 20:50:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 20:50:09 +0300
commit245137cdf0cd92077dad37868fe4859c90dada36 (patch)
treede7b3718b7537a260148e99746f58e9de5819aa0 /include/trace
parent1c9077cdecd027714736e70704da432ee2b946bb (diff)
parentf685a533a7fab35c5d069dcd663f59c8e4171a75 (diff)
downloadlinux-245137cdf0cd92077dad37868fe4859c90dada36.tar.xz
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "118 patches: - The rest of MM. Includes kfence - another runtime memory validator. Not as thorough as KASAN, but it has unmeasurable overhead and is intended to be usable in production builds. - Everything else Subsystems affected by this patch series: alpha, procfs, sysctl, misc, core-kernel, MAINTAINERS, lib, bitops, checkpatch, init, coredump, seq_file, gdb, ubsan, initramfs, and mm (thp, cma, vmstat, memory-hotplug, mlock, rmap, zswap, zsmalloc, cleanups, kfence, kasan2, and pagemap2)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) MIPS: make userspace mapping young by default initramfs: panic with memory information ubsan: remove overflow checks kgdb: fix to kill breakpoints on initmem after boot scripts/gdb: fix list_for_each x86: fix seq_file iteration for pat/memtype.c seq_file: document how per-entry resources are managed. fs/coredump: use kmap_local_page() init/Kconfig: fix a typo in CC_VERSION_TEXT help text init: clean up early_param_on_off() macro init/version.c: remove Version_<LINUX_VERSION_CODE> symbol checkpatch: do not apply "initialise globals to 0" check to BPF progs checkpatch: don't warn about colon termination in linker scripts checkpatch: add kmalloc_array_node to unnecessary OOM message check checkpatch: add warning for avoiding .L prefix symbols in assembly files checkpatch: improve TYPECAST_INT_CONSTANT test message checkpatch: prefer ftrace over function entry/exit printks checkpatch: trivial style fixes checkpatch: ignore warning designated initializers using NR_CPUS checkpatch: improve blank line after declaration test ...
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/error_report.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/include/trace/events/error_report.h b/include/trace/events/error_report.h
new file mode 100644
index 000000000000..96f64bf218b2
--- /dev/null
+++ b/include/trace/events/error_report.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Declarations for error reporting tracepoints.
+ *
+ * Copyright (C) 2021, Google LLC.
+ */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM error_report
+
+#if !defined(_TRACE_ERROR_REPORT_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_ERROR_REPORT_H
+
+#include <linux/tracepoint.h>
+
+#ifndef __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY
+#define __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY
+
+enum error_detector {
+ ERROR_DETECTOR_KFENCE,
+ ERROR_DETECTOR_KASAN
+};
+
+#endif /* __ERROR_REPORT_DECLARE_TRACE_ENUMS_ONCE_ONLY */
+
+#define error_detector_list \
+ EM(ERROR_DETECTOR_KFENCE, "kfence") \
+ EMe(ERROR_DETECTOR_KASAN, "kasan")
+/* Always end the list with an EMe. */
+
+#undef EM
+#undef EMe
+
+#define EM(a, b) TRACE_DEFINE_ENUM(a);
+#define EMe(a, b) TRACE_DEFINE_ENUM(a);
+
+error_detector_list
+
+#undef EM
+#undef EMe
+
+#define EM(a, b) { a, b },
+#define EMe(a, b) { a, b }
+
+#define show_error_detector_list(val) \
+ __print_symbolic(val, error_detector_list)
+
+DECLARE_EVENT_CLASS(error_report_template,
+ TP_PROTO(enum error_detector error_detector, unsigned long id),
+ TP_ARGS(error_detector, id),
+ TP_STRUCT__entry(__field(enum error_detector, error_detector)
+ __field(unsigned long, id)),
+ TP_fast_assign(__entry->error_detector = error_detector;
+ __entry->id = id;),
+ TP_printk("[%s] %lx",
+ show_error_detector_list(__entry->error_detector),
+ __entry->id));
+
+/**
+ * error_report_end - called after printing the error report
+ * @error_detector: short string describing the error detection tool
+ * @id: pseudo-unique descriptor identifying the report
+ * (e.g. the memory access address)
+ *
+ * This event occurs right after a debugging tool finishes printing the error
+ * report.
+ */
+DEFINE_EVENT(error_report_template, error_report_end,
+ TP_PROTO(enum error_detector error_detector, unsigned long id),
+ TP_ARGS(error_detector, id));
+
+#endif /* _TRACE_ERROR_REPORT_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>