/*
 * Preemptible hypercalls
 *
 * Copyright (C) 2014 Citrix Systems R&D ltd.
 *
 * This source code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 */

#include <linux/sched.h>
#include <xen/xen-ops.h>

#ifndef CONFIG_PREEMPT

/*
 * Some hypercalls issued by the toolstack can take many 10s of
 * seconds. Allow tasks running hypercalls via the privcmd driver to
 * be voluntarily preempted even if full kernel preemption is
 * disabled.
 *
 * Such preemptible hypercalls are bracketed by
 * xen_preemptible_hcall_begin() and xen_preemptible_hcall_end()
 * calls.
 */

DEFINE_PER_CPU(bool, xen_in_preemptible_hcall);
EXPORT_SYMBOL_GPL(xen_in_preemptible_hcall);

asmlinkage __visible void xen_maybe_preempt_hcall(void)
{
	if (unlikely(__this_cpu_read(xen_in_preemptible_hcall)
		     && need_resched())) {
		/*
		 * Clear flag as we may be rescheduled on a different
		 * cpu.
		 */
		__this_cpu_write(xen_in_preemptible_hcall, false);
		_cond_resched();
		__this_cpu_write(xen_in_preemptible_hcall, true);
	}
}
#endif /* CONFIG_PREEMPT */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/asihpi?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>asihpi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/asihpi/hpidebug.h?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>hpidebug.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='d8ca5bd158f738c4fa6974ee388c381f64db7905'/><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>Andrew F. Davis &lt;afd@ti.com&gt;</td><td class='right'>2016-12-01 10:44:16 -0600</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-12-01 17:42:27 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/asihpi/hpidebug.h?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>d8ca5bd158f738c4fa6974ee388c381f64db7905</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/asihpi/hpidebug.h?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>2657a344b39f62f92943b5070173e25d27d12ab4</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/asihpi/hpidebug.h?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>sound/pci/asihpi/hpidebug.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/asihpi/hpidebug.h?id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/asihpi/hpidebug.h?id=d8ca5bd158f738c4fa6974ee388c381f64db7905&amp;id2=1001354ca34179f3db924eb66672442a173147dc'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: tps65086: Fix 25mV ranges for BUCK regulators</div><div class='commit-msg'>The BUCK regulators 3, 4, and 5 also have a 10mV step mode,
adjust the tables and logic to reflect the data-sheet for
these regulators.

fixes: d2a2e729a666 ("regulator: tps65086: Add regulator driver for the TPS65086 PMIC")
Signed-off-by: Andrew F. Davis &lt;afd@ti.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=d8ca5bd158f738c4fa6974ee388c381f64db7905'>Diffstat</a> (limited to 'sound/pci/asihpi/hpidebug.h')</div><table summary='diffstat' class='diffstat'>