#undef TRACE_SYSTEM
#define TRACE_SYSTEM filemap

#if !defined(_TRACE_FILEMAP_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_FILEMAP_H

#include <linux/types.h>
#include <linux/tracepoint.h>
#include <linux/mm.h>
#include <linux/memcontrol.h>
#include <linux/device.h>
#include <linux/kdev_t.h>

DECLARE_EVENT_CLASS(mm_filemap_op_page_cache,

	TP_PROTO(struct page *page),

	TP_ARGS(page),

	TP_STRUCT__entry(
		__field(unsigned long, pfn)
		__field(unsigned long, i_ino)
		__field(unsigned long, index)
		__field(dev_t, s_dev)
	),

	TP_fast_assign(
		__entry->pfn = page_to_pfn(page);
		__entry->i_ino = page->mapping->host->i_ino;
		__entry->index = page->index;
		if (page->mapping->host->i_sb)
			__entry->s_dev = page->mapping->host->i_sb->s_dev;
		else
			__entry->s_dev = page->mapping->host->i_rdev;
	),

	TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu",
		MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
		__entry->i_ino,
		pfn_to_page(__entry->pfn),
		__entry->pfn,
		__entry->index << PAGE_SHIFT)
);

DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_delete_from_page_cache,
	TP_PROTO(struct page *page),
	TP_ARGS(page)
	);

DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_add_to_page_cache,
	TP_PROTO(struct page *page),
	TP_ARGS(page)
	);

#endif /* _TRACE_FILEMAP_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
pe='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/net/mac80211/key.c'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/mac80211/key.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/mac80211?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>mac80211</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>key.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='030305d69fc6963c16003f50d7e8d74b02d0a143'/><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>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-01-27 15:00:45 -0600</td></tr>
<tr><th>committer</th><td>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-01-27 15:00:45 -0600</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>363a4e34d199178769b7e7eeb26ea2620a55847b</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>net/mac80211/key.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/mac80211/key.c?id=4d191b1b63c209e37bf27938ef365244d3c41084'>4d191b1b63c209e37bf27938ef365244d3c41084</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/mac80211/key.c?id=030305d69fc6963c16003f50d7e8d74b02d0a143&amp;id2=4d191b1b63c209e37bf27938ef365244d3c41084'>diff</a>)</td></tr></table>
<div class='commit-subject'>PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies</div><div class='commit-msg'>In a struct pcie_link_state, link-&gt;root points to the pcie_link_state of
the root of the PCIe hierarchy.  For the topmost link, this points to
itself (link-&gt;root = link).  For others, we copy the pointer from the
parent (link-&gt;root = link-&gt;parent-&gt;root).

Previously we recognized that Root Ports originated PCIe hierarchies, but
we treated PCI/PCI-X to PCIe Bridges as being in the middle of the
hierarchy, and when we tried to copy the pointer from link-&gt;parent-&gt;root,
there was no parent, and we dereferenced a NULL pointer:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000090
  IP: [&lt;ffffffff9e424350&gt;] pcie_aspm_init_link_state+0x170/0x820

Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just
like Root Ports do, so link-&gt;root for these devices should also point to
itself.

Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411
Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181
Tested-by: lists@ssl-mail.com
Tested-by: Jayachandran C. &lt;jnair@caviumnetworks.com&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;
CC: stable@vger.kernel.org	# v4.2+</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>Diffstat</a> (limited to 'net/mac80211/key.c')</div><table summary='diffstat' class='diffstat'>