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objtool: Add a statistics mode

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Have it print a few numbers which can be used to size the hashtables.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200324160924.321381240@infradead.org
This commit is contained in:
Peter Zijlstra 2020-03-12 09:26:29 +01:00
parent 65fb11a7f6
commit 1e11f3fdc3
4 changed files with 25 additions and 3 deletions
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3
tools/objtool/builtin-check.c
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@ -17,7 +17,7 @@
#include "builtin.h"
#include "check.h"
bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess;
bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats;
static const char * const check_usage[] = {
"objtool check [<options>] file.o",
@ -31,6 +31,7 @@ const struct option check_options[] = {
OPT_BOOLEAN('m', "module", &module, "Indicates the object will be part of a kernel module"),
OPT_BOOLEAN('b', "backtrace", &backtrace, "unwind on error"),
OPT_BOOLEAN('a', "uaccess", &uaccess, "enable uaccess checking"),
OPT_BOOLEAN('s', "stats", &stats, "print statistics"),
OPT_END(),
};