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534,192 commits

Author SHA1 Message Date
Alexei Starovoitov
dead9f29dd perf: Fix race in BPF program unregister
there is a race between perf_event_free_bpf_prog() and free_trace_kprobe():

	__free_event()
	  event->destroy(event)
	    tp_perf_event_destroy()
	      perf_trace_destroy()
		perf_trace_event_unreg()

which is dropping event->tp_event->perf_refcount and allows to proceed in:

	unregister_trace_kprobe()
	  unregister_kprobe_event()
	      trace_remove_event_call()
		    probe_remove_event_call()
	free_trace_kprobe()

while __free_event does:

	call_rcu(&event->rcu_head, free_event_rcu);
	  free_event_rcu()
	    perf_event_free_bpf_prog()

To fix the race simply move perf_event_free_bpf_prog() before
event->destroy(), since event->tp_event is still valid at that point.

Note, perf_trace_destroy() is not racing with trace_remove_event_call()
since they both grab event_mutex.

Reported-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: lizefan@huawei.com
Cc: pi3orama@163.com
Fixes: 2541517c32 ("tracing, perf: Implement BPF programs attached to kprobes")
Link: http://lkml.kernel.org/r/1431717321-28772-1-git-send-email-ast@plumgrid.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-27 08:46:15 +02:00
Takashi Iwai
49fb189725 ALSA: hda - Set stream_pm ops automatically by generic parser
This allows user to test power_save_node feature via sysfs or patch
firmware even on the codecs that don't specify it.  It'll also save a
few lines.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-27 08:39:27 +02:00
David S. Miller
8c0ce7705e Merge branch 'phy_rgmii'
Florian Fainelli says:

====================
net: phy: phy_interface_is_rgmii helper

As you suggested, here is the helper function to avoid missing some RGMII
interface checks. Had to wait for net to be merged in net-next to avoid
submitting the same patch/commit.

Dan, you might want to rebase your dp83867 submission to use that helper
when you this patchset gets merged into net-next, thanks!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:27:36 -04:00
Florian Fainelli
32a641615a net: phy: Utilize phy_interface_is_rgmii
Update all open-coded tests for all 4 PHY_INTERFACE_MODE_RGMII* values
to use the newly introduced helper: phy_interface_is_rgmii.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:27:35 -04:00
Florian Fainelli
e463d88c36 net: phy: Add phy_interface_is_rgmii helper
RGMII interfaces come in 4 different flavors that the PHY library needs
to care about: regular RGMII (no delays), RGMII with either RX or TX
delay, and both. In order to avoid errors of checking only for one type
of RGMII interface and miss the 3 others, introduce a convenience
function which tests for all values.

Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:27:35 -04:00
Vladimir Zapolskiy
748a7295d7 net: netxen: correct sysfs bin attribute return code
If read() syscall requests unexpected number of bytes from "dimm" binary
attribute file, return EINVAL instead of EPERM.

At the same time pin down sysfs file size to the fixed
sizeof(struct netxen_dimm_cfg), which allows to exploit some missing
sanity checks from kernfs (file boundary checks vs offset etc.)

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:25:33 -04:00
Daniel Borkmann
082739aa45 tools: bpf_jit_disasm: fix segfault on disabled debugging log output
With recent debugging, I noticed that bpf_jit_disasm segfaults when
there's no debugging output from the JIT compiler to the kernel log.

Reason is that when regexec(3) doesn't match on anything, start/end
offsets are not being filled out and contain some uninitialized garbage
from stack. Thus, we need zero out offsets first.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:24:10 -04:00
David S. Miller
ffa915d071 ipv4: Fix fib_trie.c build, missing linux/vmalloc.h include.
We used to get this indirectly I supposed, but no longer do.

Either way, an explicit include should have been done in the
first place.

   net/ipv4/fib_trie.c: In function '__node_free_rcu':
>> net/ipv4/fib_trie.c:293:3: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
      vfree(n);
      ^
   net/ipv4/fib_trie.c: In function 'tnode_alloc':
>> net/ipv4/fib_trie.c:312:3: error: implicit declaration of function 'vzalloc' [-Werror=implicit-function-declaration]
      return vzalloc(size);
      ^
>> net/ipv4/fib_trie.c:312:3: warning: return makes pointer from integer without a cast
   cc1: some warnings being treated as errors

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-27 00:19:03 -04:00
Eric Dumazet
d6a4e26afb tcp: tcp_tso_autosize() minimum is one packet
By making sure sk->sk_gso_max_segs minimal value is one,
and sysctl_tcp_min_tso_segs minimal value is one as well,
tcp_tso_autosize() will return a non zero value.

We can then revert 843925f33f
("tcp: Do not apply TSO segment limit to non-TSO packets")
and save few cpu cycles in fast path.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 23:21:29 -04:00
Mark Salyzyn
b48732e4a4 unix/caif: sk_socket can disappear when state is unlocked
got a rare NULL pointer dereference in clear_bit

Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
----
v2: switch to sock_flag(sk, SOCK_DEAD) and added net/caif/caif_socket.c
v3: return -ECONNRESET in upstream caller of wait function for SOCK_DEAD
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 23:19:29 -04:00
Sudeep Holla
194ec9368c drivers: of/base: move of_init to driver_init
Commit 5590f3196b ("drivers/core/of: Add symlink to device-tree from
devices with an OF node") adds the symlink `of_node` for each device
pointing to it's device tree node while creating/initialising it.

However the devicetree sysfs is created and setup in of_init which is
executed at core_initcall level. For all the devices created before
of_init, the following error is thrown:
	"Error -2(-ENOENT) creating of_node link"

Like many other components in driver model, initialize the sysfs support
for OF/devicetree from driver_init so that it's ready before any devices
are created.

Fixes: 5590f3196b ("drivers/core/of: Add symlink to device-tree from
	devices with an OF node")
Suggested-by: Rob Herring <robh+dt@kernel.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Robert Schwebel <r.schwebel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-26 19:55:56 -07:00
Greg Kroah-Hartman
13557b5d84 usb: fixes for v4.1-rc5
A few late important fixes which have been pending
 on mailing list due to my vacations.
 
 The important fixes are a fix for DEPCMD and DGCMD
 status bitfields on DWC3, a couple fixes for Renesas
 USB Controller, one of which prevents a broken DT
 binding from reaching v4.1-final, and an old fix for
 s3c2410-udc where pullup logic was reversed.
 
 Signed-off-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'fixes-for-v4.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.1-rc5

A few late important fixes which have been pending
on mailing list due to my vacations.

The important fixes are a fix for DEPCMD and DGCMD
status bitfields on DWC3, a couple fixes for Renesas
USB Controller, one of which prevents a broken DT
binding from reaching v4.1-final, and an old fix for
s3c2410-udc where pullup logic was reversed.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-26 19:35:49 -07:00
Alex Deucher
a10f0df061 drm/radeon: don't share plls if monitors differ in audio support
Enabling audio may enable different pll dividers.  Don't share
plls if the monitors differ in audio support.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=98751

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-05-26 22:25:59 -04:00
Peter Zijlstra
bed831f9a2 module, jump_label: Fix module locking
As per the module core lockdep annotations in the coming patch:

[   18.034047] ---[ end trace 9294429076a9c673 ]---
[   18.047760] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
[   18.059228]  ffffffff817d8676 ffff880036683c38 ffffffff8157e98b 0000000000000001
[   18.067541]  0000000000000000 ffff880036683c78 ffffffff8105fbc7 ffff880036683c68
[   18.075851]  ffffffffa0046b08 0000000000000000 ffffffffa0046d00 ffffffffa0046cc8
[   18.084173] Call Trace:
[   18.086906]  [<ffffffff8157e98b>] dump_stack+0x4f/0x7b
[   18.092649]  [<ffffffff8105fbc7>] warn_slowpath_common+0x97/0xe0
[   18.099361]  [<ffffffff8105fc2a>] warn_slowpath_null+0x1a/0x20
[   18.105880]  [<ffffffff810ee502>] __module_address+0x1d2/0x1e0
[   18.112400]  [<ffffffff81161153>] jump_label_module_notify+0x143/0x1e0
[   18.119710]  [<ffffffff810814bf>] notifier_call_chain+0x4f/0x70
[   18.126326]  [<ffffffff8108160e>] __blocking_notifier_call_chain+0x5e/0x90
[   18.134009]  [<ffffffff81081656>] blocking_notifier_call_chain+0x16/0x20
[   18.141490]  [<ffffffff810f0f00>] load_module+0x1b50/0x2660
[   18.147720]  [<ffffffff810f1ade>] SyS_init_module+0xce/0x100
[   18.154045]  [<ffffffff81587429>] system_call_fastpath+0x12/0x17
[   18.160748] ---[ end trace 9294429076a9c674 ]---

Jump labels is not doing it right; fix this.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jason Baron <jbaron@akamai.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-05-27 11:09:50 +09:30
Peter Zijlstra
926a59b1df module: Annotate module version magic
Due to the new lockdep checks in the coming patch, we go:

[    9.759380] ------------[ cut here ]------------
[    9.759389] WARNING: CPU: 31 PID: 597 at ../kernel/module.c:216 each_symbol_section+0x121/0x130()
[    9.759391] Modules linked in:
[    9.759393] CPU: 31 PID: 597 Comm: modprobe Not tainted 4.0.0-rc1+ #65
[    9.759393] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
[    9.759396]  ffffffff817d8676 ffff880424567ca8 ffffffff8157e98b 0000000000000001
[    9.759398]  0000000000000000 ffff880424567ce8 ffffffff8105fbc7 ffff880424567cd8
[    9.759400]  0000000000000000 ffffffff810ec160 ffff880424567d40 0000000000000000
[    9.759400] Call Trace:
[    9.759407]  [<ffffffff8157e98b>] dump_stack+0x4f/0x7b
[    9.759410]  [<ffffffff8105fbc7>] warn_slowpath_common+0x97/0xe0
[    9.759412]  [<ffffffff810ec160>] ? section_objs+0x60/0x60
[    9.759414]  [<ffffffff8105fc2a>] warn_slowpath_null+0x1a/0x20
[    9.759415]  [<ffffffff810ed9c1>] each_symbol_section+0x121/0x130
[    9.759417]  [<ffffffff810eda01>] find_symbol+0x31/0x70
[    9.759420]  [<ffffffff810ef5bf>] load_module+0x20f/0x2660
[    9.759422]  [<ffffffff8104ef10>] ? __do_page_fault+0x190/0x4e0
[    9.759426]  [<ffffffff815880ec>] ? retint_restore_args+0x13/0x13
[    9.759427]  [<ffffffff815880ec>] ? retint_restore_args+0x13/0x13
[    9.759433]  [<ffffffff810ae73d>] ? trace_hardirqs_on_caller+0x11d/0x1e0
[    9.759437]  [<ffffffff812fcc0e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[    9.759439]  [<ffffffff815880ec>] ? retint_restore_args+0x13/0x13
[    9.759441]  [<ffffffff810f1ade>] SyS_init_module+0xce/0x100
[    9.759443]  [<ffffffff81587429>] system_call_fastpath+0x12/0x17
[    9.759445] ---[ end trace 9294429076a9c644 ]---

As per the comment this site should be fine, but lets wrap it in
preempt_disable() anyhow to placate lockdep.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2015-05-27 11:09:50 +09:30
Tejun Heo
b5ba75b5fc cgroup: simplify threadgroup locking
Now that threadgroup locking is made global, code paths around it can
be simplified.

* lock-verify-unlock-retry dancing removed from __cgroup_procs_write().

* Race protection against de_thread() removed from
  cgroup_update_dfl_csses().

Signed-off-by: Tejun Heo <tj@kernel.org>
2015-05-26 20:35:00 -04:00
Tejun Heo
d59cfc09c3 sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem
The cgroup side of threadgroup locking uses signal_struct->group_rwsem
to synchronize against threadgroup changes.  This per-process rwsem
adds small overhead to thread creation, exit and exec paths, forces
cgroup code paths to do lock-verify-unlock-retry dance in a couple
places and makes it impossible to atomically perform operations across
multiple processes.

This patch replaces signal_struct->group_rwsem with a global
percpu_rwsem cgroup_threadgroup_rwsem which is cheaper on the reader
side and contained in cgroups proper.  This patch converts one-to-one.

This does make writer side heavier and lower the granularity; however,
cgroup process migration is a fairly cold path, we do want to optimize
thread operations over it and cgroup migration operations don't take
enough time for the lower granularity to matter.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
2015-05-26 20:35:00 -04:00
Tejun Heo
7d7efec368 sched, cgroup: reorganize threadgroup locking
threadgroup_change_begin/end() are used to mark the beginning and end
of threadgroup modifying operations to allow code paths which require
a threadgroup to stay stable across blocking operations to synchronize
against those sections using threadgroup_lock/unlock().

It's currently implemented as a general mechanism in sched.h using
per-signal_struct rwsem; however, this never grew non-cgroup use cases
and becomes noop if !CONFIG_CGROUPS.  It turns out that cgroups is
gonna be better served with a different sycnrhonization scheme and is
a bit silly to keep cgroups specific details as a general mechanism.

What's general here is identifying the places where threadgroups are
modified.  This patch restructures threadgroup locking so that
threadgroup_change_begin/end() become a place where subsystems which
need to sycnhronize against threadgroup changes can hook into.

cgroup_threadgroup_change_begin/end() which operate on the
per-signal_struct rwsem are created and threadgroup_lock/unlock() are
moved to cgroup.c and made static.

This is pure reorganization which doesn't cause any functional
changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
2015-05-26 20:35:00 -04:00
Chris Lesiak
adba657533 hwmon: (ntc_thermistor) Ensure iio channel is of type IIO_VOLTAGE
When configured via device tree, the associated iio device needs to be
measuring voltage for the conversion to resistance to be correct.
Return -EINVAL if that is not the case.

Signed-off-by: Chris Lesiak <chris.lesiak@licor.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-05-26 17:22:49 -07:00
Yijing Wang
2dead00b92 PCI: mvebu: Remove mvebu_pcie_scan_bus()
After b97ea289cf ("PCI: Assign resources before drivers claim devices
(pci_scan_root_bus())"), pci_scan_root_bus() no longer adds the devices, so
it is equivalent to mvebu_pcie_scan_bus().

Remove mvebu_pcie_scan_bus() (the hw.scan method), so we use the generic
pci_scan_root_bus() path.  We also need to use pci_common_init_dev()
instead of pci_common_init() so we can supply the host bridge device
pointer.

[bhelgaas: changelog]
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Jason Cooper <jason@lakedaemon.net>
2015-05-26 19:05:59 -05:00
Eric Dumazet
095dc8e0c3 tcp: fix/cleanup inet_ehash_locks_alloc()
If tcp ehash table is constrained to a very small number of buckets
(eg boot parameter thash_entries=128), then we can crash if spinlock
array has more entries.

While we are at it, un-inline inet_ehash_locks_alloc() and make
following changes :

- Budget 2 cache lines per cpu worth of 'spinlocks'
- Try to kmalloc() the array to avoid extra TLB pressure.
  (Most servers at Google allocate 8192 bytes for this hash table)
- Get rid of various #ifdef

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 19:48:46 -04:00
Lendacky, Thomas
983942a5ea amd-xgbe-phy: Fix initial mode when autoneg is disabled
When the ethtool command is used to set the speed of the device while
the device is down, the check to set the initial mode may fail when
the device is brought up, causing failure to bring the device up.

Update the code to set the initial mode based on the desired speed if
auto-negotiation is disabled.

This patch fixes a bug introduced by:
d9663c8c21 ("amd-xgbe-phy: Use phydev advertising field vs supported")

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 19:47:30 -04:00
Jon Paul Maloy
f3903bcc00 tipc: fix bug in link protocol message create function
In commit dd3f9e70f5
("tipc: add packet sequence number at instant of transmission") we
made a change with the consequence that packets in the link backlog
queue don't contain valid sequence numbers.

However, when we create a link protocol message, we still use the
sequence number of the first packet in the backlog, if there is any,
as "next_sent" indicator in the message. This may entail unnecessary
retransissions or stale packet transmission when there is very low
traffic on the link.

This commit fixes this issue by only using the current value of
tipc_link::snd_nxt as indicator.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 19:43:03 -04:00
David S. Miller
fe9066ade6 We have three more fixes:
* AP_VLAN tailroom calculation fix, the bug leads to warnings
    along with dropped packets
  * NAPI context issue, calling napi_gro_receive() from a timer
    (obviously) can lead to crashes
  * remain-on-channel combining leads to dropped requests and not
    being able to finish certain operations, so remove it
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Merge tag 'mac80211-for-davem-2015-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
We have three more fixes:
 * AP_VLAN tailroom calculation fix, the bug leads to warnings
   along with dropped packets
 * NAPI context issue, calling napi_gro_receive() from a timer
   (obviously) can lead to crashes
 * remain-on-channel combining leads to dropped requests and not
   being able to finish certain operations, so remove it
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-26 19:38:53 -04:00
Alexandre Belloni
ac34ad27fc clockevents: Do not suspend/resume if unused
There is no point in calling suspend/resume for unused clockevents as
they are already stopped and disabled.

This is really important for AT91 as the hardware is a trainwreck and
takes ages to synchronize.

Reported-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1421399151-26800-1-git-send-email-alexandre.belloni@free-electrons.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-05-27 01:03:38 +02:00
Martin Kelly
390db010c9 selftest, x86: fix incorrect comment
The current comment indicates it's checking for a 32-bit build
environment, but it actually checks for a 64-bit environment. Fix this.

Signed-off-by: Martin Kelly <martkell@amazon.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:41 -06:00
Arnaldo Carvalho de Melo
60df4642a8 tools selftests: Fix 'clean' target with make 3.81
Make 3.81 doesn't have the 'undefine' command. Using undefine
to clear LDFLAGS fails when make version 3.81 is used. Fix it
to use override to clear LDFLAGS.

Tested-by: Shuah Khan <shuahkh@osg.samsung.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: http://lkml.kernel.org/r/20150514151225.GH23588@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:09 -06:00
Darren Hart
3dce928453 selftests/futex: Add .gitignore
Add the futex/functional targets to .gitignore.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:09 -06:00
Darren Hart
4100e675a9 kselftest: Add exit code defines
Define the exit codes with KSFT_PASS and similar so tests can use these
directly if they choose. Also enable harnesses and other tooling to use
the defines instead of hardcoding the return codes.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:08 -06:00
Darren Hart
ecac1a7549 selftests: Add futex tests to the top-level Makefile
Enable futex tests to be built and run with the make kselftest and
associated targets.

Most of the tests require escalated privileges. These return ERROR, and
run.sh continues.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:08 -06:00
Darren Hart
33ca2248e9 selftests/futex: Increment ksft pass and fail counters
Add kselftest.h to logging.h and increment the pass and fail counters as
part of the print_result routine which is called by all futex tests.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:08 -06:00
Darren Hart
9705315b75 selftests/futex: Update Makefile to use lib.mk
Adapt the futextest Makefiles to use lib.mk macros for RUN_TESTS and
EMIT_TESTS. For now, we reuse the run.sh mechanism provided by
futextest. This doesn't provide the standard selftests: [PASS|FAIL]
format, but the tests provide very similar output already.

This results in the run_kselftest.sh script for futexes including a
single line: ./run.sh

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:08 -06:00
Darren Hart
2aa8470f02 selftests: Add futex functional tests
The futextest testsuite [1] provides functional, stress, and
performance tests for the various futex op codes. Those tests will be of
more use to futex developers if they are included with the kernel
source.

Copy the core infrastructure and the functional tests into selftests,
but adapt them for inclusion in the kernel:

- Update the Makefile to include the run_tests target, remove reference
  to the performance and stress tests from the contributed sources.
- Replace my dead IBM email address with my current Intel email address.
- Remove the warrantee and write-to paragraphs from the license blurbs.
- Remove the NAME section as the filename is easily determined. ;-)
- Make the whitespace usage consistent in a couple of places.
- Cleanup various CodingStyle violations.

A future effort will explore moving the performance and stress tests
into the kernel.

1. http://git.kernel.org/cgit/linux/kernel/git/dvhart/futextest.git

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: linux-api@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:07 -06:00
John Stultz
61171d0407 kselftests: timers: Check _ALARM clockids are supported before suspending
It was reported that the alarmtimer-suspend test hangs on older
systems that don't support _ALARM clockids.

This is due to the fact that we don't check if the timer_create
fails, and thus when we suspend, the system will not programatically
resume.

Fix this by checking the timer_create call for errors.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:07 -06:00
John Stultz
acd5705d2d kselftests: timers: Ease alarmtimer-suspend unreasonable latency value
On the hardware I have, resume latency from an alarm is often
2-3 seconds (with a fair amount of variability due to the RTC's
single second granularity). Having four seconds be the pass/fail
bar is maybe a little too tight, so extend this to 5 seconds.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:07 -06:00
John Stultz
859b1bebe1 kselftests: timers: Increase delay between suspends in alarmtimer-suspend
When testing on some hardware, waiting only a second before
re-triggering suspend can keep TCP connections from re-establishing
which after a number of cycles can cause TCP connections to close
while the test is running.

So extend the delay between suspend calls to 3 seconds to let
the connections stay alive.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:07 -06:00
Tyler Baker
84cbd9e4c4 selftests/exec: do not install subdir as it is already created
Remove subdir from DEPS as it is already created at runtime. Without this,
make install fails.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Tyler Baker
3bc54b5a01 selftests/ftrace: install test.d
The ftrace test requires the directory test.d and all of it's contents to be
present during execution. Use TEST_DIRS to ensure this is copied to the
INSTALL_PATH.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Tyler Baker
e8c1d7cdf1 selftests: copy TEST_DIRS to INSTALL_PATH
Loop over all TEST_DIRS and recursively copy them to the INSTALL_PATH. Tests
such as ftrace require a directory and all of it's contents to execute the
test properly, thus these directories and files need to be copied when we
perform an install.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Sri Jayaramappa
bd67d5c15c Test compaction of mlocked memory
Commit commit 5bbe3547aa ("mm: allow compaction of unevictable pages")
introduced a sysctl that allows userspace to enable scanning of locked
pages for compaction.  This patch introduces a new test which fragments
main memory and attempts to allocate a number of huge pages to exercise
this compaction logic.

Tested on machines with up to 32 GB RAM. With the patch a much larger
number of huge pages can be allocated than on the kernel without the
patch.

Example output:
On a machine with 16 GB RAM:
sudo make run_tests vm
...
-----------------------
running compaction_test
-----------------------
No of huge pages allocated = 3834
[PASS]
...

Signed-off-by: Sri Jayaramappa <sjayaram@akamai.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric B Munson <emunson@akamai.com>
Reviewed-by: Eric B Munson <emunson@akamai.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Zhang Zhen
d0bd7f2ac7 selftests/mount: output WARN messages when mount test skipped
If /proc/self/uid_map doesn't exist, mount test case exits
wthout any warning. Fix it to print a warning that the test
is skipped because /proc/self/uid_map doesn't exist.

Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Zhang Zhen
78000efe6f selftests/timers: Make git ignore all binaries in timers test suite
This patch includes the timers test binaries into the .gitignore
file listing in their respective directories. This will make sure
that git ignores all of these test binaries when displaying status.

Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-05-26 15:58:06 -06:00
Alexander Aring
fc4f805243 nl802154: fix cca mode wpan phy flag
This patch fix the handling to call cca mode setting. If the phy isn't
flag then the driver doesn't support this setting.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-05-26 23:45:15 +02:00
Shailendra Verma
e002273b37 Input: synaptics_i2c - use proper boolean values
The variable no_decel is bool type so assigning "true" instead of "1".
Also, synaptics_i2c_get_input() has bool return type, so let's use "false"
there.

Signed-off-by: Shailendra Verma <shailendra.capricorn@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-05-26 14:16:11 -07:00
Shailendra Verma
feb9eba80c Input: psmouse - use true instead of 1 for boolean values
The variable psmouse_smartscroll is bool type so assigning true
instead of 1.

Signed-off-by: Shailendra Verma <shailendra.capricorn@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-05-26 14:16:10 -07:00
Shailendra Verma
7debcbb135 Input: cyapa - fix a few typos in comments
Signed-off-by: Shailendra Verma <shailendra.capricorn@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-05-26 14:16:09 -07:00
Dmitry Torokhov
e4b88e1989 Input: stmpe-ts - enforce device tree only mode
The STMPE MFD is only used with device tree configured systems (and STMPE
MFD core depends on OF), so force the configuration to come from device
tree only.

Tested-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-05-26 14:16:08 -07:00
Felipe Balbi
7a64c7283e usb: gadget: atmel: fix build warning
This patch fixes the following build warning:

drivers/usb/gadget/udc/atmel_usba_udc.c:707:2: warning: format ‘%x’
expects argument of type ‘unsigned int’, but argument 4 has type
‘dma_addr_t’ [-Wformat=]

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-26 15:38:30 -05:00
Julia Lawall
f6454b049d block: fix returnvar.cocci warnings
Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-26 14:02:45 -06:00
Nadav Haklai
e96998fc20 ata: ahci_mvebu: Fix wrongly set base address for the MBus window setting
According to the Armada 38x datasheet, the window base address
registers value is set in bits [31:4] of the register and corresponds
to the transaction address bits [47:20].

Therefore, the 32bit base address value should be shifted right by
20bits and left by 4bits, resulting in 16 bit shift right.

The bug as not been noticed yet because if the memory available on
the platform is less than 2GB, then the base address is zero.

[gregory.clement@free-electrons.com: add extra-explanation]

Fixes: a3464ed2f1 (ata: ahci_mvebu: new driver for Marvell Armada 380
AHCI interfaces)
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Reviewed-by: Omri Itach <omrii@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-05-26 14:46:15 -04:00