#ifndef _TOOLS_LINUX_ASM_X86_ATOMIC_H
#define _TOOLS_LINUX_ASM_X86_ATOMIC_H

#include <linux/compiler.h>
#include <linux/types.h>
#include "rmwcc.h"

#define LOCK_PREFIX "\n\tlock; "

/*
 * Atomic operations that C can't guarantee us.  Useful for
 * resource counting etc..
 */

#define ATOMIC_INIT(i)	{ (i) }

/**
 * atomic_read - read atomic variable
 * @v: pointer of type atomic_t
 *
 * Atomically reads the value of @v.
 */
static inline int atomic_read(const atomic_t *v)
{
	return ACCESS_ONCE((v)->counter);
}

/**
 * atomic_set - set atomic variable
 * @v: pointer of type atomic_t
 * @i: required value
 *
 * Atomically sets the value of @v to @i.
 */
static inline void atomic_set(atomic_t *v, int i)
{
	v->counter = i;
}

/**
 * atomic_inc - increment atomic variable
 * @v: pointer of type atomic_t
 *
 * Atomically increments @v by 1.
 */
static inline void atomic_inc(atomic_t *v)
{
	asm volatile(LOCK_PREFIX "incl %0"
		     : "+m" (v->counter));
}

/**
 * atomic_dec_and_test - decrement and test
 * @v: pointer of type atomic_t
 *
 * Atomically decrements @v by 1 and
 * returns true if the result is 0, or false for all other
 * cases.
 */
static inline int atomic_dec_and_test(atomic_t *v)
{
	GEN_UNARY_RMWcc(LOCK_PREFIX "decl", v->counter, "%0", "e");
}

#endif /* _TOOLS_LINUX_ASM_X86_ATOMIC_H */
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<tr><th>author</th><td>Stephan Mueller &lt;smueller@chronox.de&gt;</td><td class='right'>2016-10-21 04:57:57 +0200</td></tr>
<tr><th>committer</th><td>Jonathan Corbet &lt;corbet@lwn.net&gt;</td><td class='right'>2016-12-13 16:38:05 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=c30c98d174e5ecbb5d70c7c92846d4d884f8b38a'>c30c98d174e5ecbb5d70c7c92846d4d884f8b38a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=c30c98d174e5ecbb5d70c7c92846d4d884f8b38a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c30c98d174e5ecbb5d70c7c92846d4d884f8b38a'>140fbcacc622aa31168cec3b13d9b8981e5649d0</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=0184cfe72d2f139c4feed7f3820ba2269f5de322'>0184cfe72d2f139c4feed7f3820ba2269f5de322</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=c30c98d174e5ecbb5d70c7c92846d4d884f8b38a&amp;id2=0184cfe72d2f139c4feed7f3820ba2269f5de322'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: doc - fix separation of cipher / req API</div><div class='commit-msg'>Keep the cipher API and the request API function documentation in
separate sections.

Signed-off-by: Stephan Mueller &lt;smueller@chronox.de&gt;
Signed-off-by: Jonathan Corbet &lt;corbet@lwn.net&gt;
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