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Re: [PATCH 1/7] debugobjects: make fixup functions return bool instead of int

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [PATCH 1/7] debugobjects: make fixup functions return bool instead of int
Date 2016-04-22 10:40 +0200
Message-ID <rqEN4-7vo-19@gated-at.bofh.it> (permalink)
References <rqEtI-7kx-5@gated-at.bofh.it> <rqEtI-7kx-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, 22 Apr 2016, changbin.du@intel.com wrote:
> From: "Du, Changbin" <changbin.du@intel.com>
> 
> The object debugging infrastructure core provides some fixup callbacks
> for the subsystem who use it. These callbacks are called from the debug
> code whenever a problem in debug_object_init is detected. And
> debugobjects core suppose them returns 1 when the fixup was successful,
> otherwise 0. So the return type is boolean.
> 
> A bad thing is that debug_object_fixup use the return value for
> arithmetic operation. It confused me that what is the reall return

What's bad about that? The fact that it's used for arithmethic operation or
that it confused you?

> Reading over the whole code, I found some place do use the return value
> incorrectly(see next patch). So why use bool type instead?

Patches which fix a problem need to come first not in the middle of a revamp
series.
 
> +	bool (*fixup_init)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_activate)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_destroy)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_free)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_assert_init)(void *addr, enum debug_obj_state state);

So this change will introduce a gazillion of compile warnings because the
callbacks in the various usage sites are still having 'int' return type.

Thanks,

	tglx

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Thread

[PATCH 1/7] debugobjects: make fixup functions return bool instead of int changbin.du@intel.com - 2016-04-22 10:20 +0200
  Re: [PATCH 1/7] debugobjects: make fixup functions return bool  instead of int Thomas Gleixner <tglx@linutronix.de> - 2016-04-22 10:40 +0200
    RE: [PATCH 1/7] debugobjects: make fixup functions return bool  instead of int "Du, Changbin" <changbin.du@intel.com> - 2016-04-22 11:00 +0200
      RE: [PATCH 1/7] debugobjects: make fixup functions return bool  instead of int Thomas Gleixner <tglx@linutronix.de> - 2016-04-22 11:20 +0200

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