mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-10-16 22:39:48 +00:00
737,385 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Frederic Weisbecker
|
77a021be38 |
sched/core: Rename init_rq_hrtick() to hrtick_rq_init()
Do that rename in order to normalize the hrtick namespace. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Wanpeng Li <kernellwp@gmail.com> Link: http://lkml.kernel.org/r/1519186649-3242-2-git-send-email-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Mel Gorman
|
7347fc87df |
sched/numa: Delay retrying placement for automatic NUMA balance after wake_affine()
If wake_affine() pulls a task to another node for any reason and the node is no longer preferred then temporarily stop automatic NUMA balancing pulling the task back. Otherwise, tasks with a strong waker/wakee relationship may constantly fight automatic NUMA balancing over where a task should be placed. Once again netperf is interesting here. The performance barely changes but automatic NUMA balancing is interesting: Hmean send-64 354.67 ( 0.00%) 352.15 ( -0.71%) Hmean send-128 702.91 ( 0.00%) 693.84 ( -1.29%) Hmean send-256 1350.07 ( 0.00%) 1344.19 ( -0.44%) Hmean send-1024 5124.38 ( 0.00%) 4941.24 ( -3.57%) Hmean send-2048 9687.44 ( 0.00%) 9624.45 ( -0.65%) Hmean send-3312 14577.64 ( 0.00%) 14514.35 ( -0.43%) Hmean send-4096 16393.62 ( 0.00%) 16488.30 ( 0.58%) Hmean send-8192 26877.26 ( 0.00%) 26431.63 ( -1.66%) Hmean send-16384 38683.43 ( 0.00%) 38264.91 ( -1.08%) Hmean recv-64 354.67 ( 0.00%) 352.15 ( -0.71%) Hmean recv-128 702.91 ( 0.00%) 693.84 ( -1.29%) Hmean recv-256 1350.07 ( 0.00%) 1344.19 ( -0.44%) Hmean recv-1024 5124.38 ( 0.00%) 4941.24 ( -3.57%) Hmean recv-2048 9687.43 ( 0.00%) 9624.45 ( -0.65%) Hmean recv-3312 14577.59 ( 0.00%) 14514.35 ( -0.43%) Hmean recv-4096 16393.55 ( 0.00%) 16488.20 ( 0.58%) Hmean recv-8192 26876.96 ( 0.00%) 26431.29 ( -1.66%) Hmean recv-16384 38682.41 ( 0.00%) 38263.94 ( -1.08%) NUMA alloc hit 1465986 |
||
|
Mel Gorman
|
2c83362734 |
sched/fair: Consider SD_NUMA when selecting the most idle group to schedule on
find_idlest_group() compares a local group with each other group to select
the one that is most idle. When comparing groups in different NUMA domains,
a very slight imbalance is enough to select a remote NUMA node even if the
runnable load on both groups is 0 or close to 0. This ignores the cost of
remote accesses entirely and is a problem when selecting the CPU for a
newly forked task to run on. This is problematic when a forking server
is almost guaranteed to run on a remote node incurring numerous remote
accesses and potentially causing automatic NUMA balancing to try migrate
the task back or migrate the data to another node. Similar weirdness is
observed if a basic shell command pipes output to another as each process
in the pipeline is likely to start on different nodes and then get adjusted
later by wake_affine().
This patch adds imbalance to remote domains when considering whether to
select CPUs from remote domains. If the local domain is selected, imbalance
will still be used to try select a CPU from a lower scheduler domain's group
instead of stacking tasks on the same CPU.
A variety of workloads and machines were tested and as expected, there is no
difference on UMA. The difference on NUMA can be dramatic. This is a comparison
of elapsed times running the git regression test suite. It's fork-intensive with
short-lived processes:
4.15.0 4.15.0
noexit-v1r23 sdnuma-v1r23
Elapsed min 1706.06 ( 0.00%) 1435.94 ( 15.83%)
Elapsed mean 1709.53 ( 0.00%) 1436.98 ( 15.94%)
Elapsed stddev 2.16 ( 0.00%) 1.01 ( 53.38%)
Elapsed coeffvar 0.13 ( 0.00%) 0.07 ( 44.54%)
Elapsed max 1711.59 ( 0.00%) 1438.01 ( 15.98%)
4.15.0 4.15.0
noexit-v1r23 sdnuma-v1r23
User 5434.12 5188.41
System 4878.77 3467.09
Elapsed 10259.06 8624.21
That shows a considerable reduction in elapsed times. It's important to
note that automatic NUMA balancing does not affect this load as processes
are too short-lived.
There is also a noticable impact on hackbench such as this example using
processes and pipes:
hackbench-process-pipes
4.15.0 4.15.0
noexit-v1r23 sdnuma-v1r23
Amean 1 1.0973 ( 0.00%) 0.9393 ( 14.40%)
Amean 4 1.3427 ( 0.00%) 1.3730 ( -2.26%)
Amean 7 1.4233 ( 0.00%) 1.6670 ( -17.12%)
Amean 12 3.0250 ( 0.00%) 3.3013 ( -9.13%)
Amean 21 9.0860 ( 0.00%) 9.5343 ( -4.93%)
Amean 30 14.6547 ( 0.00%) 13.2433 ( 9.63%)
Amean 48 22.5447 ( 0.00%) 20.4303 ( 9.38%)
Amean 79 29.2010 ( 0.00%) 26.7853 ( 8.27%)
Amean 110 36.7443 ( 0.00%) 35.8453 ( 2.45%)
Amean 141 45.8533 ( 0.00%) 42.6223 ( 7.05%)
Amean 172 55.1317 ( 0.00%) 50.6473 ( 8.13%)
Amean 203 64.4420 ( 0.00%) 58.3957 ( 9.38%)
Amean 234 73.2293 ( 0.00%) 67.1047 ( 8.36%)
Amean 265 80.5220 ( 0.00%) 75.7330 ( 5.95%)
Amean 296 88.7567 ( 0.00%) 82.1533 ( 7.44%)
It's not a universal win as there are occasions when spreading wide and
quickly is a benefit but it's more of a win than it is a loss. For other
workloads, there is little difference but netperf is interesting. Without
the patch, the server and client starts on different nodes but quickly get
migrated due to wake_affine. Hence, the difference is overall performance
is marginal but detectable:
4.15.0 4.15.0
noexit-v1r23 sdnuma-v1r23
Hmean send-64 349.09 ( 0.00%) 354.67 ( 1.60%)
Hmean send-128 699.16 ( 0.00%) 702.91 ( 0.54%)
Hmean send-256 1316.34 ( 0.00%) 1350.07 ( 2.56%)
Hmean send-1024 5063.99 ( 0.00%) 5124.38 ( 1.19%)
Hmean send-2048 9705.19 ( 0.00%) 9687.44 ( -0.18%)
Hmean send-3312 14359.48 ( 0.00%) 14577.64 ( 1.52%)
Hmean send-4096 16324.20 ( 0.00%) 16393.62 ( 0.43%)
Hmean send-8192 26112.61 ( 0.00%) 26877.26 ( 2.93%)
Hmean send-16384 37208.44 ( 0.00%) 38683.43 ( 3.96%)
Hmean recv-64 349.09 ( 0.00%) 354.67 ( 1.60%)
Hmean recv-128 699.16 ( 0.00%) 702.91 ( 0.54%)
Hmean recv-256 1316.34 ( 0.00%) 1350.07 ( 2.56%)
Hmean recv-1024 5063.99 ( 0.00%) 5124.38 ( 1.19%)
Hmean recv-2048 9705.16 ( 0.00%) 9687.43 ( -0.18%)
Hmean recv-3312 14359.42 ( 0.00%) 14577.59 ( 1.52%)
Hmean recv-4096 16323.98 ( 0.00%) 16393.55 ( 0.43%)
Hmean recv-8192 26111.85 ( 0.00%) 26876.96 ( 2.93%)
Hmean recv-16384 37206.99 ( 0.00%) 38682.41 ( 3.97%)
However, what is very interesting is how automatic NUMA balancing behaves.
Each netperf instance runs long enough for balancing to activate:
NUMA base PTE updates 4620 1473
NUMA huge PMD updates 0 0
NUMA page range updates 4620 1473
NUMA hint faults 4301 1383
NUMA hint local faults 1309 451
NUMA hint local percent 30 32
NUMA pages migrated 1335 491
AutoNUMA cost 21% 6%
There is an unfortunate number of remote faults although tracing indicated
that the vast majority are in shared libraries. However, the tendency to
start tasks on the same node if there is capacity means that there were
far fewer PTE updates and faults incurred overall.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Giovanni Gherdovich <ggherdovich@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180213133730.24064-6-mgorman@techsingularity.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
||
Peter Zijlstra
|
24d0c1d6e6 |
sched/fair: Do not migrate due to a sync wakeup on exit
When a task exits, it notifies the parent that it has exited. This is a sync wakeup and the exiting task may pull the parent towards the wakers CPU. For simple workloads like using a shell, it was observed that the shell is pulled across nodes by exiting processes. This is daft as the parent may be long-lived and properly placed. This patch special cases a sync wakeup on exit to avoid pulling tasks across nodes. Testing on a range of workloads and machines showed very little differences in performance although there was a small 3% boost on some machines running a shellscript intensive workload (git regression test suite). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Giovanni Gherdovich <ggherdovich@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180213133730.24064-5-mgorman@techsingularity.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Mel Gorman
|
082f764a2f |
sched/fair: Do not migrate on wake_affine_weight() if weights are equal
wake_affine_weight() will consider migrating a task to, or near, the current
CPU if there is a load imbalance. If the CPUs share LLC then either CPU
is valid as a search-for-idle-sibling target and equally appropriate for
stacking two tasks on one CPU if an idle sibling is unavailable. If they do
not share cache then a cross-node migration potentially impacts locality
so while they are equal from a CPU capacity point of view, they are not
equal in terms of memory locality. In either case, it's more appropriate
to migrate only if there is a difference in their effective load.
This patch modifies wake_affine_weight() to only consider migrating a task
if there is a load imbalance for normal wakeups but will allow potential
stacking if the loads are equal and it's a sync wakeup.
For the most part, the different in performance is marginal. For example,
on a 4-socket server running netperf UDP_STREAM on localhost the differences
are as follows:
4.15.0 4.15.0
16rc0 noequal-v1r23
Hmean send-64 355.47 ( 0.00%) 349.50 ( -1.68%)
Hmean send-128 697.98 ( 0.00%) 693.35 ( -0.66%)
Hmean send-256 1328.02 ( 0.00%) 1318.77 ( -0.70%)
Hmean send-1024 5051.83 ( 0.00%) 5051.11 ( -0.01%)
Hmean send-2048 9637.02 ( 0.00%) 9601.34 ( -0.37%)
Hmean send-3312 14355.37 ( 0.00%) 14414.51 ( 0.41%)
Hmean send-4096 16464.97 ( 0.00%) 16301.37 ( -0.99%)
Hmean send-8192 26722.42 ( 0.00%) 26428.95 ( -1.10%)
Hmean send-16384 38137.81 ( 0.00%) 38046.11 ( -0.24%)
Hmean recv-64 355.47 ( 0.00%) 349.50 ( -1.68%)
Hmean recv-128 697.98 ( 0.00%) 693.35 ( -0.66%)
Hmean recv-256 1328.02 ( 0.00%) 1318.77 ( -0.70%)
Hmean recv-1024 5051.83 ( 0.00%) 5051.11 ( -0.01%)
Hmean recv-2048 9636.95 ( 0.00%) 9601.30 ( -0.37%)
Hmean recv-3312 14355.32 ( 0.00%) 14414.48 ( 0.41%)
Hmean recv-4096 16464.74 ( 0.00%) 16301.16 ( -0.99%)
Hmean recv-8192 26721.63 ( 0.00%) 26428.17 ( -1.10%)
Hmean recv-16384 38136.00 ( 0.00%) 38044.88 ( -0.24%)
Stddev send-64 7.30 ( 0.00%) 4.75 ( 34.96%)
Stddev send-128 15.15 ( 0.00%) 22.38 ( -47.66%)
Stddev send-256 13.99 ( 0.00%) 19.14 ( -36.81%)
Stddev send-1024 105.73 ( 0.00%) 67.38 ( 36.27%)
Stddev send-2048 294.57 ( 0.00%) 223.88 ( 24.00%)
Stddev send-3312 302.28 ( 0.00%) 271.74 ( 10.10%)
Stddev send-4096 195.92 ( 0.00%) 121.10 ( 38.19%)
Stddev send-8192 399.71 ( 0.00%) 563.77 ( -41.04%)
Stddev send-16384 1163.47 ( 0.00%) 1103.68 ( 5.14%)
Stddev recv-64 7.30 ( 0.00%) 4.75 ( 34.96%)
Stddev recv-128 15.15 ( 0.00%) 22.38 ( -47.66%)
Stddev recv-256 13.99 ( 0.00%) 19.14 ( -36.81%)
Stddev recv-1024 105.73 ( 0.00%) 67.38 ( 36.27%)
Stddev recv-2048 294.59 ( 0.00%) 223.89 ( 24.00%)
Stddev recv-3312 302.24 ( 0.00%) 271.75 ( 10.09%)
Stddev recv-4096 196.03 ( 0.00%) 121.14 ( 38.20%)
Stddev recv-8192 399.86 ( 0.00%) 563.65 ( -40.96%)
Stddev recv-16384 1163.79 ( 0.00%) 1103.86 ( 5.15%)
The difference in overall performance is marginal but note that most
measurements are less variable. There were similar observations for other
netperf comparisons. hackbench with sockets or threads with processes or
threads showed minor difference with some reduction of migration. tbench
showed only marginal differences that were within the noise. dbench,
regardless of filesystem, showed minor differences all of which are
within noise. Multiple machines, both UMA and NUMA were tested without
any regressions showing up.
The biggest risk with a patch like this is affecting wakeup latencies.
However, the schbench load from Facebook which is very sensitive to wakeup
latency showed a mixed result with mostly improvements in wakeup latency:
4.15.0 4.15.0
16rc0 noequal-v1r23
Lat 50.00th-qrtle-1 38.00 ( 0.00%) 38.00 ( 0.00%)
Lat 75.00th-qrtle-1 49.00 ( 0.00%) 41.00 ( 16.33%)
Lat 90.00th-qrtle-1 52.00 ( 0.00%) 50.00 ( 3.85%)
Lat 95.00th-qrtle-1 54.00 ( 0.00%) 51.00 ( 5.56%)
Lat 99.00th-qrtle-1 63.00 ( 0.00%) 60.00 ( 4.76%)
Lat 99.50th-qrtle-1 66.00 ( 0.00%) 61.00 ( 7.58%)
Lat 99.90th-qrtle-1 78.00 ( 0.00%) 65.00 ( 16.67%)
Lat 50.00th-qrtle-2 38.00 ( 0.00%) 38.00 ( 0.00%)
Lat 75.00th-qrtle-2 42.00 ( 0.00%) 43.00 ( -2.38%)
Lat 90.00th-qrtle-2 46.00 ( 0.00%) 48.00 ( -4.35%)
Lat 95.00th-qrtle-2 49.00 ( 0.00%) 50.00 ( -2.04%)
Lat 99.00th-qrtle-2 55.00 ( 0.00%) 57.00 ( -3.64%)
Lat 99.50th-qrtle-2 58.00 ( 0.00%) 60.00 ( -3.45%)
Lat 99.90th-qrtle-2 65.00 ( 0.00%) 68.00 ( -4.62%)
Lat 50.00th-qrtle-4 41.00 ( 0.00%) 41.00 ( 0.00%)
Lat 75.00th-qrtle-4 45.00 ( 0.00%) 46.00 ( -2.22%)
Lat 90.00th-qrtle-4 50.00 ( 0.00%) 50.00 ( 0.00%)
Lat 95.00th-qrtle-4 54.00 ( 0.00%) 53.00 ( 1.85%)
Lat 99.00th-qrtle-4 61.00 ( 0.00%) 61.00 ( 0.00%)
Lat 99.50th-qrtle-4 65.00 ( 0.00%) 64.00 ( 1.54%)
Lat 99.90th-qrtle-4 76.00 ( 0.00%) 82.00 ( -7.89%)
Lat 50.00th-qrtle-8 48.00 ( 0.00%) 46.00 ( 4.17%)
Lat 75.00th-qrtle-8 55.00 ( 0.00%) 54.00 ( 1.82%)
Lat 90.00th-qrtle-8 60.00 ( 0.00%) 59.00 ( 1.67%)
Lat 95.00th-qrtle-8 63.00 ( 0.00%) 63.00 ( 0.00%)
Lat 99.00th-qrtle-8 71.00 ( 0.00%) 69.00 ( 2.82%)
Lat 99.50th-qrtle-8 74.00 ( 0.00%) 73.00 ( 1.35%)
Lat 99.90th-qrtle-8 98.00 ( 0.00%) 90.00 ( 8.16%)
Lat 50.00th-qrtle-16 56.00 ( 0.00%) 55.00 ( 1.79%)
Lat 75.00th-qrtle-16 68.00 ( 0.00%) 67.00 ( 1.47%)
Lat 90.00th-qrtle-16 77.00 ( 0.00%) 78.00 ( -1.30%)
Lat 95.00th-qrtle-16 82.00 ( 0.00%) 84.00 ( -2.44%)
Lat 99.00th-qrtle-16 90.00 ( 0.00%) 93.00 ( -3.33%)
Lat 99.50th-qrtle-16 93.00 ( 0.00%) 97.00 ( -4.30%)
Lat 99.90th-qrtle-16 110.00 ( 0.00%) 110.00 ( 0.00%)
Lat 50.00th-qrtle-32 68.00 ( 0.00%) 62.00 ( 8.82%)
Lat 75.00th-qrtle-32 90.00 ( 0.00%) 83.00 ( 7.78%)
Lat 90.00th-qrtle-32 110.00 ( 0.00%) 100.00 ( 9.09%)
Lat 95.00th-qrtle-32 122.00 ( 0.00%) 111.00 ( 9.02%)
Lat 99.00th-qrtle-32 145.00 ( 0.00%) 133.00 ( 8.28%)
Lat 99.50th-qrtle-32 154.00 ( 0.00%) 143.00 ( 7.14%)
Lat 99.90th-qrtle-32 2316.00 ( 0.00%) 515.00 ( 77.76%)
Lat 50.00th-qrtle-35 69.00 ( 0.00%) 72.00 ( -4.35%)
Lat 75.00th-qrtle-35 92.00 ( 0.00%) 95.00 ( -3.26%)
Lat 90.00th-qrtle-35 111.00 ( 0.00%) 114.00 ( -2.70%)
Lat 95.00th-qrtle-35 122.00 ( 0.00%) 124.00 ( -1.64%)
Lat 99.00th-qrtle-35 142.00 ( 0.00%) 144.00 ( -1.41%)
Lat 99.50th-qrtle-35 150.00 ( 0.00%) 154.00 ( -2.67%)
Lat 99.90th-qrtle-35 6104.00 ( 0.00%) 5640.00 ( 7.60%)
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Giovanni Gherdovich <ggherdovich@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180213133730.24064-4-mgorman@techsingularity.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
||
|
Mel Gorman
|
eeb6039863 |
sched/fair: Defer calculation of 'prev_eff_load' in wake_affine_weight() until needed
On sync wakeups, the previous CPU effective load may not be used so delay the calculation until it's needed. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Giovanni Gherdovich <ggherdovich@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180213133730.24064-3-mgorman@techsingularity.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Mel Gorman
|
7ebb66a12f |
sched/fair: Avoid an unnecessary lookup of current CPU ID during wake_affine
The only caller of wake_affine() knows the CPU ID. Pass it in instead of rechecking it. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Giovanni Gherdovich <ggherdovich@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180213133730.24064-2-mgorman@techsingularity.net Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Ingo Molnar
|
ed02934395 |
Linux 4.16-rc2
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAlqKKI0eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGRNAH/0v3+nuJ0oiHE1Cl fH89F9Ma17j8oTo28byRPi7X5XJfJAqANhHa209rguvnC27y3ew/l9k93HoxG12i ttvyKFDQulQbytfJZXw8lhUyYGXVsTpyNaihPe/NtqPdIxNgfrXsUN9EIEtcnuS2 SiAj51jUySDRNR4ST6TOx4ulDm1zLrmA28WHOBNOTvDi4jTQMt1TsngHfF5AySBB lD4RTRDDwWDWtdMI7euYSq019TiDXCxmwQ94vZjrqmjmSQcl/yCK/JzEV33SZslg 4WqGIllxONvP/UlwxZLaJ+RrslqxNgDVqQKwJdfYhGaWvpgPFtS1s86zW6IgyXny 02jJfD0= =DLWn -----END PGP SIGNATURE----- Merge tag 'v4.16-rc2' into sched/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Linus Torvalds
|
91ab883eb2 | Linux 4.16-rc2 v4.16-rc2 | ||
|
Linus Torvalds
|
0e06fb5b9a |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 Kconfig fixes from Thomas Gleixner: "Three patchlets to correct HIGHMEM64G and CMPXCHG64 dependencies in Kconfig when CPU selections are explicitely set to M586 or M686" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/Kconfig: Explicitly enumerate i686-class CPUs in Kconfig x86/Kconfig: Exclude i586-class CPUs lacking PAE support from the HIGHMEM64G Kconfig group x86/Kconfig: Add missing i586-class CPUs to the X86_CMPXCHG64 Kconfig group |
||
|
Linus Torvalds
|
9ca2c16f3b |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner:
"Perf tool updates and kprobe fixes:
- perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf
top' using it, making it bearable to use it in large core count
systems such as Knights Landing/Mill Intel systems (Kan Liang)
- s/390 now uses syscall.tbl, just like x86-64 to generate the
syscall table id -> string tables used by 'perf trace' (Hendrik
Brueckner)
- Use strtoull() instead of home grown function (Andy Shevchenko)
- Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)
- Document missing 'perf data --force' option (Sangwon Hong)
- Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William
Cohen)
- Improve error handling and error propagation of ftrace based
kprobes so failures when installing kprobes are not silently
ignored and create disfunctional tracepoints"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
kprobes: Propagate error from disarm_kprobe_ftrace()
kprobes: Propagate error from arm_kprobe_ftrace()
Revert "tools include s390: Grab a copy of arch/s390/include/uapi/asm/unistd.h"
perf s390: Rework system call table creation by using syscall.tbl
perf s390: Grab a copy of arch/s390/kernel/syscall/syscall.tbl
tools/headers: Synchronize kernel ABI headers, v4.16-rc1
perf test: Fix test trace+probe_libc_inet_pton.sh for s390x
perf data: Document missing --force option
perf tools: Substitute yet another strtoull()
perf top: Check the latency of perf_top__mmap_read()
perf top: Switch default mode to overwrite mode
perf top: Remove lost events checking
perf hists browser: Add parameter to disable lost event warning
perf top: Add overwrite fall back
perf evsel: Expose the perf_missing_features struct
perf top: Check per-event overwrite term
perf mmap: Discard legacy interface for mmap read
perf test: Update mmap read functions for backward-ring-buffer test
perf mmap: Introduce perf_mmap__read_event()
perf mmap: Introduce perf_mmap__read_done()
...
|
||
|
Linus Torvalds
|
2d6c4e40ab |
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner: "A small set of updates mostly for irq chip drivers: - MIPS GIC fix for spurious, masked interrupts - fix for a subtle IPI bug in GICv3 - do not probe GICv3 ITSs that are marked as disabled - multi-MSI support for GICv2m - various small cleanups" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqdomain: Re-use DEFINE_SHOW_ATTRIBUTE() macro irqchip/bcm: Remove hashed address printing irqchip/gic-v2m: Add PCI Multi-MSI support irqchip/gic-v3: Ignore disabled ITS nodes irqchip/gic-v3: Use wmb() instead of smb_wmb() in gic_raise_softirq() irqchip/gic-v3: Change pr_debug message to pr_devel irqchip/mips-gic: Avoid spuriously handling masked interrupts |
||
|
Linus Torvalds
|
59e4721544 |
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fix from Thomas Gleixner: "A small fix which adds the missing for_each_cpu_wrap() stub for the UP case to avoid build failures" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpumask: Make for_each_cpu_wrap() available on UP as well |
||
|
Linus Torvalds
|
c786427f57 |
for-linus-20180217
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJaiF9dAAoJEPfTWPspceCmkS8P/1bLQUbCKuby+aKG52ik80Xb ao+CM0Ytn1vKxDRnk3rcZyN35++0c2rLzRlK7SCYQ006ivFFGBBrdPJlJq2WismK 06dMnkqGQGr1I6cIryFsUzi3dSk/uc9S3afgYuc6Ga3tvYvM90q1JA4PNUf4u463 pjJoDwL1ZgXeACtG7r8Bmbjb2LxoWODDqeNe3nTUdZLrdRPROn/mkjqOB+NhsTcL 47nIic+U1+QT8A3+gZgmDRz9TKXgLU+5BdUMGavOi3V3d8ZIsBijY20Inr3ovsCc rSO6WIipk2u3kTIZr3nXhZs2WfDEo+q/G+7vKz+F0ICf4luPScwpPJk0rv9Uf838 LYKn97uucAssV3+tNTWHprCdOBpG1w2fX7a1oSTczYZztWY6CNJzbOQ9w9WFXxUc cskF7jBShC5l9XmgwoKOFGrnSsuOG5TOzadNcuW5IDBFGOizAEKiIHyQOobYxIHT ZwipUgVZFbiK7vlxLssYihgrO5rMgpWz4o54OPmCzpD04d1We+Yf1VSOpMFdpR05 h3YQ3y8tj1Ndicnw4P0aj0wDPh4wFd9vuxVtLuvYryh4dffIeU/GWSfmmedakn+0 uc/7QiOxbXj0NcPBd9cJpTNCEGttfKLbedMyGj9ztMoQJAuRnbwWwY4VUJwY+Lvn hXBr/UYqkwYXkJLy2uKK =n5RP -----END PGP SIGNATURE----- Merge tag 'for-linus-20180217' of git://git.kernel.dk/linux-block Pull block fixes from Jens Axboe: - NVMe pull request from Keith, with fixes all over the map for nvme. From various folks. - Classic polling fix, that avoids a latency issue where we still end up waiting for an interrupt in some cases. From Nitesh Shetty. - Comment typo fix from Minwoo Im. * tag 'for-linus-20180217' of git://git.kernel.dk/linux-block: block: fix a typo in comment of BLK_MQ_POLL_STATS_BKTS nvme-rdma: fix sysfs invoked reset_ctrl error flow nvmet: Change return code of discard command if not supported nvme-pci: Fix timeouts in connecting state nvme-pci: Remap CMB SQ entries on every controller reset nvme: fix the deadlock in nvme_update_formats blk: optimization for classic polling nvme: Don't use a stack buffer for keep-alive command nvme_fc: cleanup io completion nvme_fc: correct abort race condition on resets nvme: Fix discard buffer overrun nvme: delete NVME_CTRL_LIVE --> NVME_CTRL_CONNECTING transition nvme-rdma: use NVME_CTRL_CONNECTING state to mark init process nvme: rename NVME_CTRL_RECONNECTING state to NVME_CTRL_CONNECTING |
||
|
Linus Torvalds
|
fa2139ef9c |
MMC host:
- meson-gx: Revert to earlier tuning process - bcm2835: Don't overwrite max frequency unconditionally -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJah/1EAAoJEP4mhCVzWIwp7CsQAMWYAyzQTNJ6WjI5CRcSq+QM 1Cykv98XarR6s3WhUA6xd+p3C6d5PDHsXdrkS0RYLqDHtfOiKdodbSjlh9oo/Uub KnjCIM8mDRwoJs6TxvBjqIyfpGQYHVF0rf0W71Ik607NGcosoHr7vgYZo2o/3V6g lu3xXKam9Uc691VFcTcD2ub4H0qI/RsoZaqIEApTnL1m0d6mAPvxald5AV/tJvKc 5R+l4Wb4dXB64q3uQvcyxQRSaWWbWEETHA79qS04W5+RJdyy/TtpPbCnPs3VqCHn WUEJpoqmFeWNhkg1lmq9MHQvjaweKyLWFKawlpft3mjhImdQBQNjHaLAWW0spsdN ifqHCs/9NMJOo0fSWwPjJNeC9UxY0HG1s8yznY+CUnESnMhZ3+h5qToFwI3iMaQF BjJCjxmNvvRAqlptcR3hqVOdrWmzkwuqTKdh/5LHuYOrrvVbDiFM1EQbCT3pe0B+ pHdlB10+wCz1PlNOvi8OUlqW+Co3/lSasWvkS6hKb8SQgZvWfmtyxewR/Mq/zAqT WKoYDjsyJCHbDXdZDKLcab5Eo8E67ogEFlkIqMvDTwaVEb1xizydxFFCVMUb8SER mROOGCS9OhJwugjOvA8HAy8ueOuTrSMWZI5XvjoBIaB8mQLEJGEVkc0IneDiC6P+ 5wopD/VKGjYqg6xz1EKC =+wYZ -----END PGP SIGNATURE----- Merge tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fixes from Ulf Hansson: - meson-gx: Revert to earlier tuning process - bcm2835: Don't overwrite max frequency unconditionally * tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: bcm2835: Don't overwrite max frequency unconditionally Revert "mmc: meson-gx: include tx phase in the tuning process" |
||
|
Linus Torvalds
|
4b6415f9f9 |
* Add missing dependency to NAND_MARVELL Kconfig entry
* Use the appropriate OOB layout in the VF610 driver -----BEGIN PGP SIGNATURE----- iQI5BAABCAAjBQJah+/3HBxib3Jpcy5icmV6aWxsb25AYm9vdGxpbi5jb20ACgkQ Ze02AX4ItwCMoQ/+NQjeBPDslHM7FdnrPSF6UXAhtuw6NaXnIp6vmnTnkgV9dru/ nNsiWMZCWD8VAXrtSDRrHUbmuHS+qzG/yxUtTkmnDaOG4YaxBHYPaiWg3C1+9ioV 1EzAX/XEb8EK3xbeFVnr1gMxr2E+/43mJF8b0DXpcX340+AQaMxfKYnHlNl0KqCS qQV4rhqZ4Zm3j+pXcqt1S21EIQTVcmq/iIziLCMRn+T6zESheTMRwh32kh2E8mea B8L3cmocf34QdPbJZLULgdjaNbHQHSK8WkYI6x2w+1lJvUo7RHmhrU2di41UAfD+ uTeNhratFWrAvBa2kI60cA/SQe2ZqXXuoAKC1WGir9qxLqHmdx54x6rGQZWar+0K n93deqQyTef20kOiQCUT/Ps4cA8zveZCKpt0CG8Znx4Z7Znjm8J6HMe1yTSVBbQh lrevi7hcxDnGn61/2zEUld+BmmDDgDLYoEdV1ofenMRbL4cb4WaKDdwdFUP5mMCM hC6NlrwT+7zZVtdoEUe6QbTeiottDNovow2L5BAv6c3NyYzV48f7KxTb3Rwyv0Yp Apje7ZUQpNux+NeuJVCQUrerY91rDk8WtnUEI2PIcL32AjR60brtY/MWBqBWclCk 4/iwHihAttz/J5GuDVWcFcF/QId9zYENT4jJLZjDT7MPAvmFcw5rmI4e4AM= =MaSC -----END PGP SIGNATURE----- Merge tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd Pull mtd fixes from Boris Brezillon: - add missing dependency to NAND_MARVELL Kconfig entry - use the appropriate OOB layout in the VF610 driver * tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd: mtd: nand: MTD_NAND_MARVELL should depend on HAS_DMA mtd: nand: vf610: set correct ooblayout |
||
|
Linus Torvalds
|
ee78ad7848 |
powerpc fixes for 4.16 #3
The main attraction is a fix for a bug in the new drmem code, which was causing an oops on boot on some versions of Qemu. There's also a fix for XIVE (Power9 interrupt controller) on KVM, as well as a few other minor fixes. Thanks to: Corentin Labbe, Cyril Bur, Cédric Le Goater, Daniel Black, Nathan Fontenot, Nicholas Piggin. -----BEGIN PGP SIGNATURE----- iQIwBAABCAAaBQJah/esExxtcGVAZWxsZXJtYW4uaWQuYXUACgkQUevqPMjhpYCi KA/+IaDlvxKezRBNQnj6GElBrgfUzICH6MtG6qo+rCKsTMgbAiZJkk3vz/JgqKY/ EusTNCwcqLaPBDgwoSmbazdtnj7YOwBGdIQOq+rC/qeSV0/gpdo02dPUWaMMOE/x nj+zASrOsv/o9XWX4XmJeuYWhW/8a/nWXKa+oLt3g/5pIHHP5TXTzMHvHH0Rn23D 1ejwDHDwMNL3p2jHlcf+v1DDol51/Kaa8e8KwJJMf00HVfFVXtdnH7do6I1qBeC0 t7PLDeWnpyY+3M1fNJ303EXIqc9DArUCn6tdhy6om96rGvBddORFuRkS4kkXbx76 pnTRPWnPa9aeC2rU+C84sJDQJgeBCpMYOvw96Yr1SxFhE9z0T+9YYTnZxiB7GISK 5BAf3EzE9dc0RtStrfTKnvcuz2OffPq2VZi3sqjiHFDit2TsF+i7ZkX/CR9UAmaH HPk4Fbi/IzlSfx/RffrOXYrpsTNcUmzvA/Tj83qGhM30LCMQ24o84eGTZN36a/eg Z+7/MZawtNElsNNpJz6MYtvEQkHZyrTUS+9iyqRwLXCIy/JIHZYwb4aRtu41SET8 lWwuaLjfwdpVPCeEkiNQwCswtppt4j2XS8Ggqef9GkqElsk6JKyxuZWTv2hRfJUK DTQvPV4PIhvhrB6qvT11qOm5yDSSV9f6yaLJ5dm3BiXulF0= =8QPF -----END PGP SIGNATURE----- Merge tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "The main attraction is a fix for a bug in the new drmem code, which was causing an oops on boot on some versions of Qemu. There's also a fix for XIVE (Power9 interrupt controller) on KVM, as well as a few other minor fixes. Thanks to: Corentin Labbe, Cyril Bur, Cédric Le Goater, Daniel Black, Nathan Fontenot, Nicholas Piggin" * tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries: Check for zero filled ibm,dynamic-memory property powerpc/pseries: Add empty update_numa_cpu_lookup_table() for NUMA=n powerpc/powernv: IMC fix out of bounds memory access at shutdown powerpc/xive: Use hw CPU ids when configuring the CPU queues powerpc: Expose TSCR via sysfs only on powernv |
||
|
Linus Torvalds
|
74688a02fa |
arm64 fixes:
- Updated the page table accessors to use READ/WRITE_ONCE and prevent
compiler transformation that could lead to an apparent loss of
coherency
- Enabled branch predictor hardening for the Falkor CPU
- Fix interaction between kpti enabling and KASan causing the recursive
page table walking to take a significant time
- Fix some sparse warnings
-----BEGIN PGP SIGNATURE-----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=O6of
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"The bulk of this is the pte accessors annotation to READ/WRITE_ONCE
(we tried to avoid pushing this during the merge window to avoid
conflicts)
- Updated the page table accessors to use READ/WRITE_ONCE and prevent
compiler transformation that could lead to an apparent loss of
coherency
- Enabled branch predictor hardening for the Falkor CPU
- Fix interaction between kpti enabling and KASan causing the
recursive page table walking to take a significant time
- Fix some sparse warnings"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cputype: Silence Sparse warnings
arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
arm64: Add missing Falkor part number for branch predictor hardening
|
||
|
Linus Torvalds
|
f73f047dd7 |
xen: fixes for 4.16-rc2
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAABAgAGBQJah+tbAAoJELDendYovxMvHIYH/38IC3Nd3IWTVsLvHXUCxFrn fNPKgSyC5/igLbmwjPQ+kbr7bha6Vi3uZwmovoC/9i03gYfzmuuMhhOvOVByYHXg HHC+kqegB7tZ2GFeR2hrIba4UxBz4ZC0R5+qQYHZMx5dRt0/Llby663mkcK7WEWr Na8jT32AbIOiCKWHgsmTC7h2ZiSXeY+WVj1B3Re7ovLHMTYoMDQhVi5I7w34bcch bgTLx4TokC8Z3kCNotPAwrL0rQggEJ+PR91j2mL52uEWv80Q4hgR+QIFtEwiYXmG jDbx4Y+jQUAu4+r6/2z4S/gFTV93lB+dWbXYuHoFv5Mv1A+Ve7Al744RvrNh3gM= =UVdB -----END PGP SIGNATURE----- Merge tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: - fixes for the Xen pvcalls frontend driver - fix for booting Xen pv domains - fix for the xenbus driver user interface * tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: pvcalls-front: wait for other operations to return when release passive sockets pvcalls-front: introduce a per sock_mapping refcount x86/xen: Calculate __max_logical_packages on PV domains xenbus: track caller request id |
||
Stefano Stabellini
|
d1a75e0896 |
pvcalls-front: wait for other operations to return when release passive sockets
Passive sockets can have ongoing operations on them, specifically, we have two wait_event_interruptable calls in pvcalls_front_accept. Add two wake_up calls in pvcalls_front_release, then wait for the potential waiters to return and release the sock_mapping refcount. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Acked-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
||
|
Stefano Stabellini
|
64d6871827 |
pvcalls-front: introduce a per sock_mapping refcount
Introduce a per sock_mapping refcount, in addition to the existing global refcount. Thanks to the sock_mapping refcount, we can safely wait for it to be 1 in pvcalls_front_release before freeing an active socket, instead of waiting for the global refcount to be 1. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Acked-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
||
Prarit Bhargava
|
63e708f826 |
x86/xen: Calculate __max_logical_packages on PV domains
The kernel panics on PV domains because native_smp_cpus_done() is
only called for HVM domains.
Calculate __max_logical_packages for PV domains.
Fixes:
|
||
Joao Martins
|
29fee6eed2 |
xenbus: track caller request id
Commit |
||
Robin Murphy
|
e1a50de378 |
arm64: cputype: Silence Sparse warnings
Sparse makes a fair bit of noise about our MPIDR mask being implicitly long - let's explicitly describe it as such rather than just relying on the value forcing automatic promotion. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
|
Linus Torvalds
|
1e3510b2b0 |
A few dma-mapping fixes for the fallout from the changes in rc-1.
-----BEGIN PGP SIGNATURE----- iQI/BAABCAApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAlqHGfMLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYNqBhAAicRKvMghVLqrmW8wiy81cBxCZ96UL6gaogmtVnL/ jQ37zcgX77qKMzf/5M2grHQsttURBGa3TaMGPC21E6g8vJ++Oe7gTDhswDGj24yY yJOK5PrqKAqaTSjHn9c64DsCNia8BwMnY2ypT+c9nCAsUh1Jk+bBJMkyQQAx0/i5 /z2rsc7FDZB9Lq7+DOApQB86ALfbeRaS29QRl1yl6wlLKmKKC57mFjHKom9HujsY UUuzHO8TFppbv/Gsl/UPns3ONPT6of88iCbSTIC44lO0WFtk/lS0qP3KVI9K96uo /DTmpTJOZn5d1GPGW0tQ23KjRXH+6MZryMX5SRoPZnJJvQLzLHDCu2OCRNFN3SXD t+wWBS6kW2ZoeDOAwh2Ncp1SC1hhri9WBAT2MS41kwTeMJ4fHt7rofsIRkMjRJEr vx6j9fmloL9rYT3KOu0eMapfYIlkg549FsPK5QZfOuXDyNdPw+Wxq7wRoEsTjTkI 32rLWnl+5/1nHMlSjPTpnbK9V+42WL8pTy8Rz2TkmjiiNh9WAsxHVg1XzsrEWwKD 5RQBQl7LBFI8jNlF2Ke9iubm45R3Eu9U8BmduF7pfaACrF8uh5KPMkhKFQs/KHl7 NPvFGbKD/1c3BMsRO0ehnoEchL1mo6K4Tnwos9u4TzxcC/bniWmllV0gRAAvs5TF pQQ= =p0Hm -----END PGP SIGNATURE----- Merge tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fixes from Christoph Hellwig: "A few dma-mapping fixes for the fallout from the changes in rc1" * tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping: powerpc/macio: set a proper dma_coherent_mask dma-mapping: fix a comment typo dma-direct: comment the dma_direct_free calling convention dma-direct: mark as is_phys ia64: fix build failure with CONFIG_SWIOTLB |
||
Will Deacon
|
20a004e7b0 |
arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
In many cases, page tables can be accessed concurrently by either another CPU (due to things like fast gup) or by the hardware page table walker itself, which may set access/dirty bits. In such cases, it is important to use READ_ONCE/WRITE_ONCE when accessing page table entries so that entries cannot be torn, merged or subject to apparent loss of coherence due to compiler transformations. Whilst there are some scenarios where this cannot happen (e.g. pinned kernel mappings for the linear region), the overhead of using READ_ONCE /WRITE_ONCE everywhere is minimal and makes the code an awful lot easier to reason about. This patch consistently uses these macros in the arch code, as well as explicitly namespacing pointers to page table entries from the entries themselves by using adopting a 'p' suffix for the former (as is sometimes used elsewhere in the kernel source). Tested-by: Yury Norov <ynorov@caviumnetworks.com> Tested-by: Richard Ruigrok <rruigrok@codeaurora.org> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
Arnd Bergmann
|
af27d9403f |
mm: hide a #warning for COMPILE_TEST
We get a warning about some slow configurations in randconfig kernels:
mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]
The warning is reasonable by itself, but gets in the way of randconfig
build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.
The warning was added in 2013 in commit
|
||
|
Linus Torvalds
|
78352f18a4 |
MIPS fixes for 4.16-rc2
A few fixes for outstanding MIPS issues:
- An __init section mismatch warning when brcmstb_pm is enabled.
- A regression handling multiple mem=X@Y arguments (4.11).
- A USB Kconfig select warning, and related sparc cleanup (4.16).
-----BEGIN PGP SIGNATURE-----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=BGD8
-----END PGP SIGNATURE-----
Merge tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips
Pull MIPS fixes from James Hogan:
"A few fixes for outstanding MIPS issues:
- an __init section mismatch warning when brcmstb_pm is enabled
- a regression handling multiple mem=X@Y arguments (4.11)
- a USB Kconfig select warning, and related sparc cleanup (4.16)"
* tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
sparc,leon: Select USB_UHCI_BIG_ENDIAN_{MMIO,DESC}
usb: Move USB_UHCI_BIG_ENDIAN_* out of USB_SUPPORT
MIPS: Fix incorrect mem=X@Y handling
MIPS: BMIPS: Fix section mismatch warning
|
||
|
Linus Torvalds
|
da370f1d63 |
for-4.16-rc1-tag
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAlqG8poACgkQxWXV+ddt WDuHSA//eC+69XpHwohI6pcPQ7Jbr9UCj1L/Gt0U96YSzijGW4Hv3OQEWLIRBu4c nZbzQYtUunpguLYwfXgUUgXRHBTo2Y5bXZNmF2MtL7JcPOLhLh4h/IcGY7eRd2Vq qvv2bqr3yAcQo7s6z5U/D8ulohzHQTxG7Jaq/BkVxQqhvu+vdu/9T8ikAWnmSTjw lONu8soR5QO7tewxz23Cguw/t1bWe1aMXG9Ykd4avyhQHtgzNE+l82i4DYUhK2CM x8M5/CxnDLPe73IJuA2INCUtpPvR4Qufi5Nz6EN3BrJNCGBkmg18sPIvWlH6LsVh bsm4Lwz/piq+hkDq2GG+Z79uiGAfCVUWAsnm7yYHwpVyMvwHKlfrcVSAuRZixw5E /NZ0JEkEOtvzpv4inZFYbAgD+oKfvYvwj9BW5BXfu2aH6hJBImfAeMSd1aHB3uZI kGgy52k2v2P3WKQOFUbmW417P05DvvGmRvRmU+tSFpB+lXAZqRzoiVIuFm0xwhf1 1SmnYgnSYzPmzIRXAMsSYQeK/8NXDdMZMutaw/AYwX+QBEdIAErf6MWcjI6XZRyG g8Gr8JcpwSa+H5/LKN5uswfXxfSAsqVHnZhbOVrjyGX0wyR4KJg3ag3KsHd9SCxb LDEjPSYEDn9yfmw6pK2Q6J26FGYiKpuUXaNiYVNymGe6162IiBM= =VeA/ -----END PGP SIGNATURE----- Merge tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: "We have a few assorted fixes, some of them show up during fstests so I gave them more testing" * tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device Btrfs: fix null pointer dereference when replacing missing device btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes btrfs: Ignore errors from btrfs_qgroup_trace_extent_post Btrfs: fix unexpected -EEXIST when creating new inode Btrfs: fix use-after-free on root->orphan_block_rsv Btrfs: fix btrfs_evict_inode to handle abnormal inodes correctly Btrfs: fix extent state leak from tree log Btrfs: fix crash due to not cleaning up tree log block's dirty bits Btrfs: fix deadlock in run_delalloc_nocow |
||
|
Linus Torvalds
|
c85b0b1434 |
- Fix for DM core to properly propagate errors (avoids overriding
non-zero error with 0). This is particularly important given DM core's increased use of chained bios. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJahv8zAAoJEMUj8QotnQNaiCEH/Attdh6bOzUImbdxIpFWJNNk F3Jyhge+OI3OHTAbyslFBl3kF0M7jZS3xq9wLpyIb/iIBs6o0N7eGNjkVuDg+Xnw /SwWNyM1KBr+eYIs55T3KY1vX4YKzwO65hm4sXN6GiSMxPeFsXRTcPJKYzhW42ST 2gKqbtWG9JDyAZgdIFe0AYQF+oVYPX8lCEPNXy7WtmMCFjRan/g7FT0i14GSHy7S YnQn+Db6Z/BzApDxAozrzj6OUxlVAgIo+6qp/jR8CoN4TX/V8L6gmLWlirrTJxr0 9hET9/NFMWoR9j3Jfatw2YyuMV2LnMo9FJVW9+cRHMLi5NSUdk03A+H1CgsTSNk= =z7xt -----END PGP SIGNATURE----- Merge tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fix from Mike Snitzer: "Fix for DM core to properly propagate errors (avoids overriding non-zero error with 0). This is particularly important given DM core's increased use of chained bios" * tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: correctly handle chained bios in dec_pending() |
||
|
Linus Torvalds
|
5e8639b73b |
platform-drivers-x86 for v4.16-4
Regression fix in keyboard support for Dell laptops. Prevent out-of-boundary write in WMI bus driver. Increase timeout to read functional key status on Lenovo laptops. The following is an automated git shortlog grouped by driver: dell-laptop: - Removed duplicates in DMI whitelist - fix kbd_get_state's request value ideapad-laptop: - Increase timeout to wait for EC answer wmi: - fix off-by-one write in wmi_dev_probe() -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEhiZOUlnC9oKN3n3AmT3/83c5Sy0FAlqG9DoACgkQmT3/83c5 Sy13xw/9GsRBnuCp3nkZ/Onq1V1q9ij/pfhpB5TCnQpdK5fMYbkd3KWnU78Fz5Ee xi5NQaIL4xfcClY6ao1jQSBCorM9QEWT7PR9MBUi6+rc+ZrskXKX2XsCB34hTcpF vMhTf9uqYxZtDNDfctdsRWlezw2DOMwXRZhilcLFm/579gUJR6mvw3k9Tldwaiac qSRwIwyiZtzpJYCBdHsCzQGH0EUOSBiyWe+l9/G2hUPY+6p0Tt4n08FKAGEMUJL7 qQJj1olzBaTvJHXxsxazs1SZAT+Ti2RXuGnrK0+cdRFYGw1R1yYgNdOoyT5lHsz5 gou0lSzEb4hylqNln/4zae8+lDSG2mrMJ6hWusFCR0mvM7naXRQ2mGq2j9OuU7i5 Pn6bkI2orFIIvvor/M12ehxdYwujnZPqwlQ3TaKvBQ2nJqwqcIC0m/w9kbQeSgEt 83LUOUTI7xlQuHnHbCVq0voOY9cszLbRrolsqTFBSv2yBNZFGZaGet3qU4yCRv5M MzALOsyl9r3X2gZzDoL5ZguKzprrbkr4ENnUTYf4UATx4SniqtMp1fbPECLtHEm9 DQqVlEjp1MvOQLghcATSrbshxBv4CY53fcDXdunfKetz822zycxDu6y94wcQfFT/ c1twPUHKvchfImVk7EBeYqEVywlQgyjr24wRV/EACXjhJwo7zNE= =VkoD -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86 Pull x86 platform driver fixes from Andy Shevchenko: - regression fix in keyboard support for Dell laptops - prevent out-of-boundary write in WMI bus driver - increase timeout to read functional key status on Lenovo laptops * tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86: platform/x86: dell-laptop: Removed duplicates in DMI whitelist platform/x86: dell-laptop: fix kbd_get_state's request value platform/x86: ideapad-laptop: Increase timeout to wait for EC answer platform/x86: wmi: fix off-by-one write in wmi_dev_probe() |
||
|
Linus Torvalds
|
1a2a7d3ee6 |
sound fixes for 4.16-rc2
A collection of usual suspects: - A handful USB-audio and HD-audio device-specific quirks - Some trivial fixes for the new AC97 bus stuff - Another race fix in ALSA sequencer core -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAlqGpdIOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE/8Dg//Y/jOsYVVatg8JPYZOv/8FopyjM/+tGCFLWij oxFnsqK3f4mEbE2MQGZVZDSexwfrro7U7PWRrmxE9/DWkakRbwcjOiKRRDfYcGHA jE1BIQkcbu3HgTzRWACnHpHMFzwWoOyRv8HVq/qMbYcCPgCDgNPXJat1GopwSkK/ k5SCbEOLAqefTv6tcGPSVie9cjfjj1wSJ0M5jV6zJp1+9feDfN0yttEi+fUDOGeR dfEuHoeaPpd6PnINxdkY6jaoMZtk91TdUpVEaq0srJXxYwO5V7JiOGt7VV4hgk23 tJMLCfA7NGNQBKVcjs/uLDTeWWqlzYVCD7caCp1z97CidfCX5k9f4rK1r1GzMfez zrIxAY+Y7nHPlE65sTVToHTa5FjS8J3cdAPovJWRjbY6/C9GYvdx1epaz02HPpZm va1r21oD02a5+UqwOvX0H4rii5Yc63Mt4FelBfEhv+cGq7m2Sduw32UDk09n3Wst 1Q9ivL5gigf4hEnPMG+aZba0KOgLM+Q3P+EeivoAQhQrp0A9TqZ3aCmDNGTmhc51 Yhgz+kJHcLtDfJnGQXlG7M+pDSepk1Pb8Yl+m0u305sf+hyFwYrcHU5tWc/u+bX+ ZMa1rGEr21yIvBadcO8qrGPiOgWCgGzTTAeI0kMlMZaofOmQQTaiszGVL+/gjOZu pmNbkfc= =UMDx -----END PGP SIGNATURE----- Merge tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of usual suspects: - a handful USB-audio and HD-audio device-specific quirks - some trivial fixes for the new AC97 bus stuff - another race fix in ALSA sequencer core" * tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek: PCI quirk for Fujitsu U7x7 ALSA: seq: Fix racy pool initializations ALSA: usb: add more device quirks for USB DSD devices ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute ALSA: ac97: Fix copy and paste typo in documentation ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204 ALSA: ac97: kconfig: Remove select of undefined symbol AC97 ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform ALSA: hda/realtek - Add headset mode support for Dell laptop ALSA: hda - Fix headset mic detection problem for two Dell machines |
||
|
Linus Torvalds
|
bad575394b |
i915 fixes, and single amd and nouveau fix
-----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJahnE9AAoJEAx081l5xIa+io0QAJlHvqgoDwzgzEJ2ORyLEMkR GOg79Bq7Km3KEtrPNMYpVC/c0jsZHeaYIYdo0RhRhpeJRJtuudcqielyVsTGPbBL Hb7rE2XrcfT3ttmcAe/1OlwVhEyzn9+6DEMIQgY1nYmxBjTMCoeZisOkUSNZzMrk f5/x+4lGp4mSJ33ruKI01pq22DPDXC7rKobjr22OiZSSr1Gw9ZVvTBdPi/zU6izi vqNjzgdTnBfW2lOqB/MZneUioXUsagZ+GahCm0AxUYUIFbuUtwnu/dG7eljhjQZg pXLcsnssXn4+a9Q2uLZ1FSXBei7m6ye23UmRWW8omS45sfXPVsfeNcP9WHISE/Ln 7HDlIdU+KOvTLnq4dLbeWTPgK30cokXJ7SVFR+R3VyVB4hWVDLwZzXSMRnLlxUUT qc0+9txZDkTBo6COjRHt0B3Umw3n2NABa0cx8T44m/N2S0pNdgksxltZIq84GzbL btRIYf5LOqJeClzlT7X+XfSOGycEpeKul1NecfBHlW3UHI7EupN5X28hd7nLVM8E lGkljaOezFhSqBSDkR2dQueY04ZsdGUH+7ehh3cLoMpxlsj/CHeh7BNre0Lzs+LT 1q02X/YyeB/ErMCQypN1hBrRk5D5TSDBjAVb5UhyUClFONgakdnfGgvby8jQ6pqh WeuBV0kG31A8c/+OXjn+ =+PbR -----END PGP SIGNATURE----- Merge tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux Pull drm fixes from Dave Airlie: "One nouveau regression fix, one AMD quirk and a full set of i915 fixes. The i915 fixes are mostly for things caught by their CI system, main ones being DSI panel fixes and GEM fixes" * tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux: drm/nouveau: Make clock gate support conditional drm/i915: Fix DSI panels with v1 MIPI sequences without a DEASSERT sequence v3 drm/i915: Free memdup-ed DSI VBT data structures on driver_unload drm/i915: Add intel_bios_cleanup() function drm/i915/vlv: Add cdclk workaround for DSI drm/i915/gvt: fix one typo of render_mmio trace drm/i915/gvt: Support BAR0 8-byte reads/writes drm/i915/gvt: add 0xe4f0 into gen9 render list drm/i915/pmu: Fix building without CONFIG_PM drm/i915/pmu: Fix sleep under atomic in RC6 readout drm/i915/pmu: Fix PMU enable vs execlists tasklet race drm/i915: Lock out execlist tasklet while peeking inside for busy-stats drm/i915/breadcrumbs: Ignore unsubmitted signalers drm/i915: Don't wake the device up to check if the engine is asleep drm/i915: Avoid truncation before clamping userspace's priority value drm/i915/perf: Fix compiler warning for string truncation drm/i915/perf: Fix compiler warning for string truncation drm/amdgpu: add new device to use atpx quirk |
||
NeilBrown
|
8dd601fa83 |
dm: correctly handle chained bios in dec_pending()
dec_pending() is given an error status (possibly 0) to be recorded
against a bio. It can be called several times on the one 'struct
dm_io', and it is careful to only assign a non-zero error to
io->status. However when it then assigned io->status to bio->bi_status,
it is not careful and could overwrite a genuine error status with 0.
This can happen when chained bios are in use. If a bio is chained
beneath the bio that this dm_io is handling, the child bio might
complete and set bio->bi_status before the dm_io completes.
This has been possible since chained bios were introduced in 3.14, and
has become a lot easier to trigger with commit
|
||
Thomas Gleixner
|
6dee6ae9d6 |
irqchip updates for 4.16-rc2
- a MIPS GIC fix for spurious, masked interrupts - a fix for a subtle IPI bug in GICv3 - do no probe GICv3 ITSs that are marked as disabled - multi-MSI support for GICv2m - various cleanups -----BEGIN PGP SIGNATURE----- iQJJBAABCAAzFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAlqG6iAVHG1hcmMuenlu Z2llckBhcm0uY29tAAoJECPQ0LrRPXpDKp8P/2NinZ/E7OveFyMAIKXx9yHTHIsu upAXBs6sEn8RKuKXgT0bcsiCrDNsZK7kbMmgJ6OgLOi0pNeR1/j8DzzCbrJ7OLyc Nl0/jQkEkVSMjULqUbwLdxTnS5WP/mP/MPTIQQWc2Hagq9633oZ4IlJVg56z+gJ5 rzISq+d6PlpT7ruknQI8GDXPes7bDms2mKGmayCKbQ5lD88NUVu3V85WHIeKh8ax U+2gW/9EfGdtcJg/zSJKJis82X1JvMEBt0xLE8xvI3YxRTpJc30DfEamATrqRiUK tYYeUPy8QDvOuOwDv+mMU9I5jMIFK/WZOPjhkXfa7NK1NSAG6IDMiioaSRX/3sJM iNhgrNuJvh5bescobOK35HOLM/t3bLoqXBSAkahus2xlRY9GI14Khf402VKqpZRf BjLhpqkwRs4rSe3FtQJ4J/Aq5Rk5sCeSzGZXsQK9CJjZtIDeGXc8bD5uGHNoczW4 44XP2HG/J/V4ZovNRHT7GqZkL0Md96KNJ+f3SifRucYi2rCatD6D75KDw3H2sdtL Fs+DPkgm2vPlMowfpPH4VWvwsZ7KEEe5i1zU80j7llopaY6Ivy537jg9s1Gh0tj5 z3yd/IEb0Ytn2m1/dBrnr80pP2TyGdbNJkZAZkj/mlzl6saCgtHTksAUK7doMByK aLy2TxU+NzBXotuo =hEZQ -----END PGP SIGNATURE----- Merge tag 'irqchip-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent Pull irqchip updates for 4.16-rc2 from Marc Zyngier - A MIPS GIC fix for spurious, masked interrupts - A fix for a subtle IPI bug in GICv3 - Do not probe GICv3 ITSs that are marked as disabled - Multi-MSI support for GICv2m - Various cleanups |
||
Andy Shevchenko
|
0b24a0bbe2 |
irqdomain: Re-use DEFINE_SHOW_ATTRIBUTE() macro
...instead of open coding file operations followed by custom ->open() callbacks per each attribute. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
||
Jaedon Shin
|
2d02424e89 |
irqchip/bcm: Remove hashed address printing
Since commit
|
||
Marc Zyngier
|
de337ee301 |
irqchip/gic-v2m: Add PCI Multi-MSI support
We'd never implemented Multi-MSI support with GICv2m, because it is weird and clunky, and you'd think people would rather use MSI-X. Turns out there is still plenty of devices out there that rely on Multi-MSI. Oh well, let's teach that trick to the v2m widget, it is not a big deal anyway. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
||
Stephen Boyd
|
95a2562590 |
irqchip/gic-v3: Ignore disabled ITS nodes
On some platforms there's an ITS available but it's not enabled because reading or writing the registers is denied by the firmware. In fact, reading or writing them will cause the system to reset. We could remove the node from DT in such a case, but it's better to skip nodes that are marked as "disabled" in DT so that we can describe the hardware that exists and use the status property to indicate how the firmware has configured things. Cc: Stuart Yoder <stuyoder@gmail.com> Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
||
Shanker Donthineni
|
21ec30c0ef |
irqchip/gic-v3: Use wmb() instead of smb_wmb() in gic_raise_softirq()
A DMB instruction can be used to ensure the relative order of only memory accesses before and after the barrier. Since writes to system registers are not memory operations, barrier DMB is not sufficient for observability of memory accesses that occur before ICC_SGI1R_EL1 writes. A DSB instruction ensures that no instructions that appear in program order after the DSB instruction, can execute until the DSB instruction has completed. Cc: stable@vger.kernel.org Acked-by: Will Deacon <will.deacon@arm.com>, Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
||
Mark Salter
|
b6dd4d83dc |
irqchip/gic-v3: Change pr_debug message to pr_devel
The pr_debug() in gic-v3 gic_send_sgi() can trigger a circular locking
warning:
GICv3: CPU10: ICC_SGI1R_EL1
|
||
Matt Redfearn
|
285cb4f623 |
irqchip/mips-gic: Avoid spuriously handling masked interrupts
Commit |
||
Nathan Fontenot
|
2c10636a0b |
powerpc/pseries: Check for zero filled ibm,dynamic-memory property
Some versions of QEMU will produce an ibm,dynamic-reconfiguration-memory node with a ibm,dynamic-memory property that is zero-filled. This causes the drmem code to oops trying to parse this property. The fix for this is to validate that the property does contain LMB entries before trying to parse it and bail if the count is zero. Oops: Kernel access of bad area, sig: 11 [#1] DAR: 0000000000000010 NIP read_drconf_v1_cell+0x54/0x9c LR read_drconf_v1_cell+0x48/0x9c Call Trace: __param_initcall_debug+0x0/0x28 (unreliable) drmem_init+0x144/0x2f8 do_one_initcall+0x64/0x1d0 kernel_init_freeable+0x298/0x38c kernel_init+0x24/0x160 ret_from_kernel_thread+0x5c/0xb4 The ibm,dynamic-reconfiguration-memory device tree property generated that causes this: ibm,dynamic-reconfiguration-memory { ibm,lmb-size = <0x0 0x10000000>; ibm,memory-flags-mask = <0xff>; ibm,dynamic-memory = <0x0 0x0 0x0 0x0 0x0 0x0>; linux,phandle = <0x7e57eed8>; ibm,associativity-lookup-arrays = <0x1 0x4 0x0 0x0 0x0 0x0>; ibm,memory-preservation-time = <0x0>; }; Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Tested-by: Daniel Black <daniel@linux.vnet.ibm.com> [mpe: Trim oops report] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
||
Michael Kelley
|
d207af2eab |
cpumask: Make for_each_cpu_wrap() available on UP as well
for_each_cpu_wrap() was originally added in the #else half of a
large "#if NR_CPUS == 1" statement, but was omitted in the #if
half. This patch adds the missing #if half to prevent compile
errors when NR_CPUS is 1.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Michael Kelley <mhkelley@outlook.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kys@microsoft.com
Cc: martin.petersen@oracle.com
Cc: mikelley@microsoft.com
Fixes:
|
||
Matthew Whitehead
|
25d76ac888 |
x86/Kconfig: Explicitly enumerate i686-class CPUs in Kconfig
The X86_P6_NOP config class leaves out many i686-class CPUs. Instead, explicitly enumerate all these CPUs. Using a configuration with M686 currently sets X86_MINIMUM_CPU_FAMILY=5 instead of the correct value of 6. Booting on an i586 it will fail to generate the "This kernel requires an i686 CPU, but only detected an i586 CPU" message and intentional halt as expected. It will instead just silently hang when it hits i686-specific instructions. Signed-off-by: Matthew Whitehead <tedheadster@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1518713696-11360-3-git-send-email-tedheadster@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Matthew Whitehead
|
69b8d3fcab |
x86/Kconfig: Exclude i586-class CPUs lacking PAE support from the HIGHMEM64G Kconfig group
i586-class machines also lack support for Physical Address Extension (PAE), so add them to the exclusion list. Signed-off-by: Matthew Whitehead <tedheadster@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1518713696-11360-2-git-send-email-tedheadster@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Matthew Whitehead
|
f960cfd126 |
x86/Kconfig: Add missing i586-class CPUs to the X86_CMPXCHG64 Kconfig group
Several i586-class CPUs supporting this instruction are missing from the X86_CMPXCHG64 config group. Using a configuration with either M586TSC or M586MMX currently sets X86_MINIMUM_CPU_FAMILY=4 instead of the correct value of 5. Booting on an i486 it will fail to generate the "This kernel requires an i586 CPU, but only detected an i486 CPU" message and intentional halt as expected. It will instead just silently hang when it hits i586-specific instructions. The M586 CPU is not in this list because at least the Cyrix 5x86 lacks this instruction, and perhaps others. Signed-off-by: Matthew Whitehead <tedheadster@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1518713696-11360-1-git-send-email-tedheadster@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
Jessica Yu
|
297f9233b5 |
kprobes: Propagate error from disarm_kprobe_ftrace()
Improve error handling when disarming ftrace-based kprobes. Like with arm_kprobe_ftrace(), propagate any errors from disarm_kprobe_ftrace() so that we do not disable/unregister kprobes that are still armed. In other words, unregister_kprobe() and disable_kprobe() should not report success if the kprobe could not be disarmed. disarm_all_kprobes() keeps its current behavior and attempts to disarm all kprobes. It returns the last encountered error and gives a warning if not all probes could be disarmed. This patch is based on Petr Mladek's original patchset (patches 2 and 3) back in 2015, which improved kprobes error handling, found here: https://lkml.org/lkml/2015/2/26/452 However, further work on this had been paused since then and the patches were not upstreamed. Based-on-patches-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Jessica Yu <jeyu@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Jiri Kosina <jikos@kernel.org> Cc: Joe Lawrence <joe.lawrence@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/20180109235124.30886-3-jeyu@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Jessica Yu
|
12310e3437 |
kprobes: Propagate error from arm_kprobe_ftrace()
Improve error handling when arming ftrace-based kprobes. Specifically, if we fail to arm a ftrace-based kprobe, register_kprobe()/enable_kprobe() should report an error instead of success. Previously, this has lead to confusing situations where register_kprobe() would return 0 indicating success, but the kprobe would not be functional if ftrace registration during the kprobe arming process had failed. We should therefore take any errors returned by ftrace into account and propagate this error so that we do not register/enable kprobes that cannot be armed. This can happen if, for example, register_ftrace_function() finds an IPMODIFY conflict (since kprobe_ftrace_ops has this flag set) and returns an error. Such a conflict is possible since livepatches also set the IPMODIFY flag for their ftrace_ops. arm_all_kprobes() keeps its current behavior and attempts to arm all kprobes. It returns the last encountered error and gives a warning if not all probes could be armed. This patch is based on Petr Mladek's original patchset (patches 2 and 3) back in 2015, which improved kprobes error handling, found here: https://lkml.org/lkml/2015/2/26/452 However, further work on this had been paused since then and the patches were not upstreamed. Based-on-patches-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Jessica Yu <jeyu@kernel.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Jiri Kosina <jikos@kernel.org> Cc: Joe Lawrence <joe.lawrence@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/20180109235124.30886-2-jeyu@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Ingo Molnar
|
3f9e646313 |
perf/core improvements and fixes:
- perf_mmap overwrite mode overhaul, prep work to get 'perf top' using it, making it bearable to use it in large core count systems such as Knights Landing/Mill Intel systems (Kan Liang) - s/390 now uses syscall.tbl, just like x86-64 to generate the syscall table id -> string tables used by 'perf trace' (Hendrik Brueckner) - Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William Cohen) - Use strtoull() instead of home grown function (Andy Shevchenko) - Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar) - Document missing 'perf data --force' option (Sangwon Hong) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEELb9bqkb7Te0zijNb1lAW81NSqkAFAlqFhnIACgkQ1lAW81NS qkCWiA/+MKuwFS/NiVBKRRmlBTEUHPo3zmOA3lPV4sJcf2qIicQKjpSTCdC8yTrM 4Br9q3x211Zk1XxcRrB6urTT/8ySzkfo2sbKLRbJfvj5MT5rJ+wcVAJ3KLLoI2xF daDqrCMMP9otMcyiJUx9I88FagS2XkmL2r3M8O7z/9PzIegYLYSB5v2YwAoNVkJa odA1JTXChIB0KM980cY3NvrhlV++uPIVdv32q0MWhIdqExFWcl4Qct3ax6WztOeG QedMpFsEoAtjn+l8w9cc6l61vKiizCZaWvs/mgYZ2xaaWTwKGxm89W81KDYn9Kuq fZEkq/tDoy/0ehqZtaPMxjoH63FpYuMfsW557b7w21RDYo+M788D0yYnvBd63Fp3 ptBgiLGZ2lHKEPrDab+6fVjIx0eEwXFVeuUniDWJ1ocTnyOoSna2nPzNF2cpEYaO hyiA+1McR3hf7x6l8wykzJ8f/HrPVeY+PgbBL1i6nZIJiDkqFfQ52/MjtAzD9ONJ kuKRIgCPGmD1+8z1/dTA4tgXZNbbCH+F05/G26hzcZjNTXam44/CjaA+0sfxD+jc 3mVHTbPiHf6zJfFap7OmcJOcn+QEcRNajvHU1Eci6pwClMwrkhFH79hMbPkcewU9 eqLQXkqrhitAEn5n2qirTT3CJZIZ65m6SM68rl9bYnShMsiyqNE= =TdvB -----END PGP SIGNATURE----- Merge tag 'perf-core-for-mingo-4.17-20180215' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core fixes from Arnaldo Carvalho de Melo: - perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf top' using it, making it bearable to use it in large core count systems such as Knights Landing/Mill Intel systems (Kan Liang) - s/390 now uses syscall.tbl, just like x86-64 to generate the syscall table id -> string tables used by 'perf trace' (Hendrik Brueckner) - Use strtoull() instead of home grown function (Andy Shevchenko) - Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar) - Document missing 'perf data --force' option (Sangwon Hong) - Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William Cohen) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> |