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authorPeter Zijlstra <peterz@infradead.org>2021-02-26 12:59:59 +0300
committerIngo Molnar <mingo@kernel.org>2021-03-06 14:44:23 +0300
commit8ad15c6900840e8a2163012f4581c52127622e02 (patch)
treec582ed54815d968a506db6f366509dab2ac068df /tools/objtool/builtin-check.c
parent36d92e43d01cbeeec99abdf405362243051d6b3f (diff)
downloadlinux-8ad15c6900840e8a2163012f4581c52127622e02.tar.xz
objtool: Add --backup
Teach objtool to write backups files, such that it becomes easier to see what objtool did to the object file. Backup files will be ${name}.orig. Suggested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Borislav Petkov <bp@suse.de> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lkml.kernel.org/r/YD4obT3aoXPWl7Ax@hirez.programming.kicks-ass.net
Diffstat (limited to 'tools/objtool/builtin-check.c')
-rw-r--r--tools/objtool/builtin-check.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index c3a85d8f6c5c..97f063d55b9f 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -18,7 +18,8 @@
#include <objtool/builtin.h>
#include <objtool/objtool.h>
-bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux, mcount, noinstr;
+bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats,
+ validate_dup, vmlinux, mcount, noinstr, backup;
static const char * const check_usage[] = {
"objtool check [<options>] file.o",
@@ -37,6 +38,7 @@ const struct option check_options[] = {
OPT_BOOLEAN('n', "noinstr", &noinstr, "noinstr validation for vmlinux.o"),
OPT_BOOLEAN('l', "vmlinux", &vmlinux, "vmlinux.o validation"),
OPT_BOOLEAN('M', "mcount", &mcount, "generate __mcount_loc"),
+ OPT_BOOLEAN('B', "backup", &backup, "create .orig files before modification"),
OPT_END(),
};