#ifndef __ASM_GENERIC_CMPXCHG_LOCAL_H
#define __ASM_GENERIC_CMPXCHG_LOCAL_H

#include <linux/types.h>
#include <linux/irqflags.h>

extern unsigned long wrong_size_cmpxchg(volatile void *ptr)
	__noreturn;

/*
 * Generic version of __cmpxchg_local (disables interrupts). Takes an unsigned
 * long parameter, supporting various types of architectures.
 */
static inline unsigned long __cmpxchg_local_generic(volatile void *ptr,
		unsigned long old, unsigned long new, int size)
{
	unsigned long flags, prev;

	/*
	 * Sanity checking, compile-time.
	 */
	if (size == 8 && sizeof(unsigned long) != 8)
		wrong_size_cmpxchg(ptr);

	raw_local_irq_save(flags);
	switch (size) {
	case 1: prev = *(u8 *)ptr;
		if (prev == old)
			*(u8 *)ptr = (u8)new;
		break;
	case 2: prev = *(u16 *)ptr;
		if (prev == old)
			*(u16 *)ptr = (u16)new;
		break;
	case 4: prev = *(u32 *)ptr;
		if (prev == old)
			*(u32 *)ptr = (u32)new;
		break;
	case 8: prev = *(u64 *)ptr;
		if (prev == old)
			*(u64 *)ptr = (u64)new;
		break;
	default:
		wrong_size_cmpxchg(ptr);
	}
	raw_local_irq_restore(flags);
	return prev;
}

/*
 * Generic version of __cmpxchg64_local. Takes an u64 parameter.
 */
static inline u64 __cmpxchg64_local_generic(volatile void *ptr,
		u64 old, u64 new)
{
	u64 prev;
	unsigned long flags;

	raw_local_irq_save(flags);
	prev = *(u64 *)ptr;
	if (prev == old)
		*(u64 *)ptr = new;
	raw_local_irq_restore(flags);
	return prev;
}

#endif
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=63fe813c6008b5a10a06bffd64cee8da2984e716'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?h=nds-private-remove&amp;id=63fe813c6008b5a10a06bffd64cee8da2984e716'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/net?h=nds-private-remove&amp;id=63fe813c6008b5a10a06bffd64cee8da2984e716'>net</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/net?h=nds-private-remove&amp;id=63fe813c6008b5a10a06bffd64cee8da2984e716&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-10 11:46:39 -0500'>2017-02-10</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=6d5496483f5eb7b4da2e83c7b2149a21ad412d96'>switchdev: bridge: Offload mc router ports</a></td><td>Nogah Frankel</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-10 11:46:38 -0500'>2017-02-10</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=147c1e9b902c25c868024260d24bb0b1dac1433d'>switchdev: bridge: Offload multicast disabled</a></td><td>Nogah Frankel</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-10 11:38:08 -0500'>2017-02-10</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=cf1facda2f61bc3e9ffd985b6d624dec6ad3f279'>sched: move tcf_proto_destroy and tcf_destroy_chain helpers into cls_api</a></td><td>Jiri Pirko</td><td>2</td><td><span class='deletions'>-2</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-10 11:38:08 -0500'>2017-02-10</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=79112c26f14c38ddbac3b2739469e373ef424fe6'>sched: rename tcf_destroy to tcf_destroy_proto</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-10 11:32:13 -0500'>2017-02-10</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=2f3a5272e5c16c3c10fbba06928a513f9b1e2fcd'>ipv4: fib: Add events for FIB replace and append</a></td><td>Ido Schimmel</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=242bd2d519d7194633e309286ba7ba29a1ad63e8'>sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Requ...</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=78098117f8bfad4f2104c3f7b6b69071af95a246'>sctp: add support for generating stream reconf add incoming/outgoing streams ...</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=a92ce1a42dde1caaee4afae67531e3e7acecf6e4'>sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-09 16:57:38 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=c56480a1e90261842f54f3a5a9ebc12d827f0c3e'>sctp: add support for generating stream reconf ssn/tsn reset request chunk</a></td><td>Xin Long</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-08 15:25:18 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=982acb97560c8118c2109504a22b0d78a580547d'>ipv4: fib: Notify about nexthop status changes</a></td><td>Ido Schimmel</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+7</span></td></tr>
<tr><td><span title='2017-02-08 14:38:18 -0500'>2017-02-08</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=97e219b7c1f75b14b29abe28ad53e8709e8d15e5'>gro_cells: move to net/core/gro_cells.c</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-82</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-07 16:29:30 -0500'>2017-02-07</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/include/net?h=nds-private-remove&amp;id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>David S. Miller