#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_
#define _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_

#include <asm/types.h>
#include <asm/bitsperlong.h>

/**
 * __ffs - find first bit in word.
 * @word: The word to search
 *
 * Undefined if no bit exists, so code should check against 0 first.
 */
static __always_inline unsigned long __ffs(unsigned long word)
{
	int num = 0;

#if __BITS_PER_LONG == 64
	if ((word & 0xffffffff) == 0) {
		num += 32;
		word >>= 32;
	}
#endif
	if ((word & 0xffff) == 0) {
		num += 16;
		word >>= 16;
	}
	if ((word & 0xff) == 0) {
		num += 8;
		word >>= 8;
	}
	if ((word & 0xf) == 0) {
		num += 4;
		word >>= 4;
	}
	if ((word & 0x3) == 0) {
		num += 2;
		word >>= 2;
	}
	if ((word & 0x1) == 0)
		num += 1;
	return num;
}

#endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_ */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>trace</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>events</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/module.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>module.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='b4cfe3971f6eab542dd7ecc398bfa1aeec889934'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Jack Morgenstein &lt;jackm@dev.mellanox.co.il&gt;</td><td class='right'>2017-01-15 20:15:00 +0200</td></tr>
<tr><th>committer</th><td>Doug Ledford &lt;dledford@redhat.com&gt;</td><td class='right'>2017-01-27 14:29:04 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/module.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>b4cfe3971f6eab542dd7ecc398bfa1aeec889934</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events/module.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/module.h?id=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>2d4b21e0a2913612274a69a3ba1bfee4cffc6e77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/module.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934&amp;id2=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>diff</a>)</td></tr></table>
<div class='commit-subject'>RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled</div><div class='commit-msg'>If IPV6 has not been enabled in the underlying kernel, we must avoid
calling IPV6 procedures in rdma_cm.ko.

This requires using "IS_ENABLED(CONFIG_IPV6)" in "if" statements
surrounding any code which calls external IPV6 procedures.

In the instance fixed here, procedure cma_bind_addr() called
ipv6_addr_type() -- which resulted in calling external procedure
__ipv6_addr_type().

Fixes: 6c26a77124ff ("RDMA/cma: fix IPv6 address resolution")
Cc: &lt;stable@vger.kernel.org&gt; # v4.2+
Cc: Spencer Baugh &lt;sbaugh@catern.com&gt;
Signed-off-by: Jack Morgenstein &lt;jackm@dev.mellanox.co.il&gt;
Reviewed-by: Moni Shoua &lt;monis@mellanox.com&gt;
Signed-off-by: Leon Romanovsky &lt;leon@kernel.org&gt;
Signed-off-by: Doug Ledford &lt;dledford@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>Diffstat</a> (limited to 'include/trace/events/module.h')</div><table summary='diffstat' class='diffstat'>