linux-kernel - Re: [PATCH v2 8/9] objtool: Detect missing _

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Date:   Thu, 13 Apr 2023 21:17:40 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Miroslav Benes <mbenes@...e.cz>
Subject: Re: [PATCH v2 8/9] objtool: Detect missing __noreturn annotations

> diff --git a/tools/objtool/noreturns.h b/tools/objtool/noreturns.h
> new file mode 100644
> index 000000000000..0f5e53fd9e7a
> --- /dev/null
> +++ b/tools/objtool/noreturns.h
> @@ -0,0 +1,27 @@
> +NORETURN(__invalid_creds)
> +NORETURN(__module_put_and_kthread_exit)
> +NORETURN(__reiserfs_panic)
> +NORETURN(__stack_chk_fail)
> +NORETURN(__ubsan_handle_builtin_unreachable)
> +NORETURN(arch_cpu_idle_dead)
> +NORETURN(cpu_bringup_and_idle)
> +NORETURN(cpu_startup_entry)
> +NORETURN(do_exit)
> +NORETURN(do_group_exit)
> +NORETURN(do_task_dead)
> +NORETURN(ex_handler_msr_mce)
> +NORETURN(fortify_panic)
> +NORETURN(kthread_complete_and_exit)
> +NORETURN(kthread_exit)
> +NORETURN(kunit_try_catch_throw)
> +NORETURN(lbug_with_loc)
> +NORETURN(machine_real_restart)
> +NORETURN(make_task_dead)
> +NORETURN(panic)
> +NORETURN(rewind_stack_and_make_dead)
> +NORETURN(sev_es_terminate)
> +NORETURN(snp_abort)
> +NORETURN(stop_this_cpu)
> +NORETURN(usercopy_abort)
> +NORETURN(xen_cpu_bringup_again)
> +NORETURN(xen_start_kernel)

Not as convenient to edit, but much easier to use. A bit of a toss up I
suppose.