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authorMasami Hiramatsu <mhiramat@kernel.org>2018-01-12 20:55:03 +0300
committerAlexei Starovoitov <ast@kernel.org>2018-01-13 04:33:38 +0300
commit540adea3809f61115d2a1ea4ed6e627613452ba1 (patch)
tree03ba07d13807d06d52053b2d02565075f210c2e2 /include/linux/error-injection.h
parent66665ad2f1023d3ffb0c12eea9e0a6d0b613ecb3 (diff)
downloadlinux-540adea3809f61115d2a1ea4ed6e627613452ba1.tar.xz
error-injection: Separate error-injection from kprobe
Since error-injection framework is not limited to be used by kprobes, nor bpf. Other kernel subsystems can use it freely for checking safeness of error-injection, e.g. livepatch, ftrace etc. So this separate error-injection framework from kprobes. Some differences has been made: - "kprobe" word is removed from any APIs/structures. - BPF_ALLOW_ERROR_INJECTION() is renamed to ALLOW_ERROR_INJECTION() since it is not limited for BPF too. - CONFIG_FUNCTION_ERROR_INJECTION is the config item of this feature. It is automatically enabled if the arch supports error injection feature for kprobe or ftrace etc. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/error-injection.h')
-rw-r--r--include/linux/error-injection.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/error-injection.h b/include/linux/error-injection.h
new file mode 100644
index 000000000000..130a67c50dac
--- /dev/null
+++ b/include/linux/error-injection.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_ERROR_INJECTION_H
+#define _LINUX_ERROR_INJECTION_H
+
+#ifdef CONFIG_FUNCTION_ERROR_INJECTION
+
+#include <asm/error-injection.h>
+
+extern bool within_error_injection_list(unsigned long addr);
+
+#else /* !CONFIG_FUNCTION_ERROR_INJECTION */
+
+#include <asm-generic/error-injection.h>
+static inline bool within_error_injection_list(unsigned long addr)
+{
+ return false;
+}
+
+#endif
+
+#endif /* _LINUX_ERROR_INJECTION_H */