linux-kernel - Re: [PATCH v6] hashtable: introduce a small and naive hashtable

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Date:	Thu, 27 Sep 2012 09:30:23 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Sasha Levin <levinsasha928@...il.com>,
	David Laight <David.Laight@...LAB.COM>,
	torvalds@...ux-foundation.org, tj@...nel.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	ebiederm@...ssion.com, neilb@...e.de, bfields@...ldses.org,
	ejt@...hat.com, snitzer@...hat.com, edumazet@...gle.com,
	josh@...htriplett.org, rmallon@...il.com, palves@...hat.com
Subject: Re: [PATCH v6] hashtable: introduce a small and naive hashtable

On Thu, 2012-09-27 at 09:11 -0400, Mathieu Desnoyers wrote:

> AFAIK, gcc nowadays use "inline" only as a hint

Only if CONFIG_OPTIMIZE_INLINING is set.

>From include/linux/compiler-gcc.h:

#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \
    !defined(CONFIG_OPTIMIZE_INLINING) || (__GNUC__ < 4)
# define inline         inline          __attribute__((always_inline)) notrace
# define __inline__     __inline__      __attribute__((always_inline)) notrace
# define __inline       __inline        __attribute__((always_inline)) notrace
#else
/* A lot of inline functions can cause havoc with function tracing */
# define inline         inline          notrace
# define __inline__     __inline__      notrace
# define __inline       __inline        notrace
#endif

-- Steve


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