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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2019-03-18 19:09:38 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-03-21 12:02:19 +0100 |
| commit | 0c671812f152b628bd87c0af49da032cc2a2c319 (patch) | |
| tree | 0e85f7daf7ddfcdf451ef866eead03533f9e848f /tools/objtool | |
| parent | 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff) | |
| download | linux-0c671812f152b628bd87c0af49da032cc2a2c319.tar.bz2 | |
objtool: Move objtool_file struct off the stack
Objtool uses over 512k of stack, thanks to the hash table embedded in
the objtool_file struct. This causes an unnecessarily large stack
allocation and breaks users with low stack limits.
Move the struct off the stack.
Fixes: 042ba73fe7eb ("objtool: Add several performance improvements")
Reported-by: Vassili Karpov <moosotc@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/df92dcbc4b84b02ffa252f46876df125fb56e2d7.1552954176.git.jpoimboe@redhat.com
Diffstat (limited to 'tools/objtool')
| -rw-r--r-- | tools/objtool/check.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 0414a0d52262..5dde107083c6 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2184,9 +2184,10 @@ static void cleanup(struct objtool_file *file) elf_close(file->elf); } +static struct objtool_file file; + int check(const char *_objname, bool orc) { - struct objtool_file file; int ret, warnings = 0; objname = _objname; |