[
    {
        "EventCode": "0x5C",
        "UMask": "0x1",
        "BriefDescription": "Unhalted core cycles when the thread is in ring 0",
        "Counter": "0,1,2,3",
        "EventName": "CPL_CYCLES.RING0",
        "PublicDescription": "This event counts the unhalted core cycles during which the thread is in the ring 0 privileged mode.",
        "SampleAfterValue": "2000003",
        "CounterHTOff": "0,1,2,3,4,5,6,7"
    },
    {
        "EventCode": "0x5C",
        "UMask": "0x2",
        "BriefDescription": "Unhalted core cycles when thread is in rings 1, 2, or 3",
        "Counter": "0,1,2,3",
        "EventName": "CPL_CYCLES.RING123",
        "PublicDescription": "This event counts unhalted core cycles during which the thread is in rings 1, 2, or 3.",
        "SampleAfterValue": "2000003",
        "CounterHTOff": "0,1,2,3,4,5,6,7"
    },
    {
        "EdgeDetect": "1",
        "EventCode": "0x5C",
        "UMask": "0x1",
        "BriefDescription": "Number of intervals between processor halts while thread is in ring 0",
        "Counter": "0,1,2,3",
        "EventName": "CPL_CYCLES.RING0_TRANS",
        "CounterMask": "1",
        "PublicDescription": "This event counts when there is a transition from ring 1,2 or 3 to ring0.",
        "SampleAfterValue": "100007",
        "CounterHTOff": "0,1,2,3,4,5,6,7"
    },
    {
        "EventCode": "0x63",
        "UMask": "0x1",
        "BriefDescription": "Cycles when L1 and L2 are locked due to UC or split lock",
        "Counter": "0,1,2,3",
        "EventName": "LOCK_CYCLES.SPLIT_LOCK_UC_LOCK_DURATION",
        "PublicDescription": "This event counts cycles in which the L1 and L2 are locked due to a UC lock or split lock. A lock is asserted in case of locked memory access, due to noncacheable memory, locked operation that spans two cache lines, or a page walk from the noncacheable page table. L1D and L2 locks have a very high performance penalty and it is highly recommended to avoid such access.",
        "SampleAfterValue": "2000003",
        "CounterHTOff": "0,1,2,3,4,5,6,7"
    }
]&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/rds/sysctl.c?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/rds/sysctl.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rds?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>rds</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rds/sysctl.c?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>sysctl.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><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>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/sysctl.c?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rds/sysctl.c?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>75f65eba7eac9277971082a2d5a4cf1370562c0c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rds/sysctl.c?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>net/rds/sysctl.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/sysctl.c?h=nds-private-remove&amp;id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rds/sysctl.c?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'net/rds/sysctl.c')</div><table summary='diffstat' class='diffstat'>