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| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2016-09-22 16:21:25 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-09-23 07:28:05 +0200 |
| commit | c1fad9ef7ed14aad464972e6444e7a3bd5670f26 (patch) | |
| tree | 5a61b598b9f2be92ff4e108fa156115d6ccbc734 /tools/objtool/builtin-check.c | |
| parent | sched/debug: Hide printk() by default (diff) | |
| download | linux-dev-c1fad9ef7ed14aad464972e6444e7a3bd5670f26.tar.xz linux-dev-c1fad9ef7ed14aad464972e6444e7a3bd5670f26.zip | |
objtool: Add do_task_dead() to global noreturn list
objtool reports the following new warning:
kernel/exit.o: warning: objtool: do_exit() falls through to next function complete_and_exit()
The warning is caused by do_exit()'s new call to do_task_dead(), which
is a new "noreturn" function which objtool doesn't know about yet,
introduced by:
9af6528ee9b6 ("sched/core: Optimize __schedule()")
( objtool has to know all the global noreturn functions so it can follow
the control flow of any functions which call them. Unfortunately they
need to be hard-coded because there's no automated way to detect them. )
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kbuild-all@01.org
Cc: tipbuild@zytor.com
Link: http://lkml.kernel.org/r/20160922212125.zbuewckqll4yur25@treble
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool/builtin-check.c')
| -rw-r--r-- | tools/objtool/builtin-check.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c index bd09d0effef8..143b6cdd7f06 100644 --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -175,6 +175,7 @@ static int __dead_end_function(struct objtool_file *file, struct symbol *func, "__stack_chk_fail", "panic", "do_exit", + "do_task_dead", "__module_put_and_exit", "complete_and_exit", "kvm_spurious_fault", |