/*
 * Copyright 2014 IBM Corp.
 *
 * This program 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.
 */

#ifndef _MISC_CXL_BASE_H
#define _MISC_CXL_BASE_H

#include <misc/cxl.h>

#ifdef CONFIG_CXL_BASE

#define CXL_IRQ_RANGES 4

struct cxl_irq_ranges {
	irq_hw_number_t offset[CXL_IRQ_RANGES];
	irq_hw_number_t range[CXL_IRQ_RANGES];
};

extern atomic_t cxl_use_count;

static inline bool cxl_ctx_in_use(void)
{
       return (atomic_read(&cxl_use_count) != 0);
}

static inline void cxl_ctx_get(void)
{
       atomic_inc(&cxl_use_count);
}

static inline void cxl_ctx_put(void)
{
       atomic_dec(&cxl_use_count);
}

struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
void cxl_afu_put(struct cxl_afu *afu);
void cxl_slbia(struct mm_struct *mm);
bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
void cxl_pci_disable_device(struct pci_dev *dev);
int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev);

#else /* CONFIG_CXL_BASE */

static inline bool cxl_ctx_in_use(void) { return false; }
static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
static inline void cxl_afu_put(struct cxl_afu *afu) {}
static inline void cxl_slbia(struct mm_struct *mm) {}
static inline bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) { return false; }
static inline void cxl_pci_disable_device(struct pci_dev *dev) {}
static inline int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { return -ENODEV; }
static inline void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev) {}

#endif /* CONFIG_CXL_BASE */

#endif
htables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/net/inet6_hashtables.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>inet6_hashtables.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='4205e4786d0b9fc3b4fec7b1910cf645a0468307'/><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-10 14:01:05 +0100</td></tr>
<tr><th>committer</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-16 13:20:05 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>4205e4786d0b9fc3b4fec7b1910cf645a0468307</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>685ccb486409197b936c785eb9d173c3edff45a1</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>include/net/inet6_hashtables.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/inet6_hashtables.h?id=7e164ce4e8ecd7e9a58a83750bd3ee03125df154'>7e164ce4e8ecd7e9a58a83750bd3ee03125df154</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/inet6_hashtables.h?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307&amp;id2=7e164ce4e8ecd7e9a58a83750bd3ee03125df154'>diff</a>)</td></tr></table>
<div class='commit-subject'>cpu/hotplug: Provide dynamic range for prepare stage</div><div class='commit-msg'>Mathieu reported that the LTTNG modules are broken as of 4.10-rc1 due to
the removal of the cpu hotplug notifiers.

Usually I don't care much about out of tree modules, but LTTNG is widely
used in distros. There are two ways to solve that:

1) Reserve a hotplug state for LTTNG

2) Add a dynamic range for the prepare states.

While #1 is the simplest solution, #2 is the proper one as we can convert
in tree users, which do not care about ordering, to the dynamic range as
well.

Add a dynamic range which allows LTTNG to request states in the prepare
stage.

Reported-and-tested-by: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Mathieu Desnoyers &lt;mathieu.desnoyers@efficios.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Sebastian Sewior &lt;bigeasy@linutronix.de&gt;
Cc: Steven Rostedt &lt;rostedt@goodmis.org&gt;
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701101353010.3401@nanos
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=4205e4786d0b9fc3b4fec7b1910cf645a0468307'>Diffstat</a> (limited to 'include/net/inet6_hashtables.h')</div><table summary='diffstat' class='diffstat'>