Commit graph

534127 commits

Author SHA1 Message Date
Sven Eckelmann
9f6446c7f9 batman-adv: update copyright years for 2015
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2015-05-29 10:13:35 +02:00
Simon Wunderlich
70e717762d batman-adv: Start new development cycle
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2015-05-29 10:13:35 +02:00
Takashi Iwai
b47eee2e0a ALSA: hda - Fix lost sound due to stream_pm ops cleanup
The commit [49fb189725: ALSA: hda - Set stream_pm ops automatically
by generic parser] resulted in regressions on some Realtek and VIA
codecs because these drivers set patch_ops after calling the generic
parser, thus stream_pm got cleared to NULL again.  I haven't noticed
since I tested with IDT codec.

Restore (partial revert) the stream_pm ops for them to fix the
regression.

Fixes: 49fb189725 ('ALSA: hda - Set stream_pm ops automatically by generic parser')
Reported-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 09:49:01 +02:00
Jan Beulich
7ba554b5ac x86/asm/entry/32: Really make user_mode() work correctly for VM86 mode
While commit efa7045103 ("x86/asm/entry: Make user_mode() work
correctly if regs came from VM86 mode") claims that "user_mode()
is now identical to user_mode_vm()", this wasn't actually the
case - no prior commit made it so.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
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: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/5566EB0D020000780007E655@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-29 09:46:40 +02:00
Takashi Iwai
3270f0dd1a ALSA: pci: Drop superfluous ifdef CONFIG_PROC_FS
The compiler can optimize the unused code away, so we can drop
ifdefs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 08:00:06 +02:00
Takashi Iwai
52262b4a5d ALSA: emux: Fix/cleanup old ifdef CONFIG_PROC_FS
Build emux_proc.o and drop the unneeded ifdefs.
Replace the left CONFIG_PROC with the new CONFIG_SND_PROC_FS.

Along with this, fix the build of emux_oss.o in Makefile, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:58:11 +02:00
Takashi Iwai
506e6ae256 ALSA: emu10k1: Fix/cleanup ifdef CONFIG_PROC_FS
Build emuproc.o conditionally and drop the unneeded ifdefs.
Some are replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:56:42 +02:00
Takashi Iwai
95bb6258d6 ALSA: cs46xx: Fix old ifdef CONFIG_PROC_FS
Replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:55:37 +02:00
Takashi Iwai
1c1784387a ALSA: ca0106: Fix/cleanup ifdef CONFIG_PROC_FS
Build ca0106_proc.o conditionally to drop unneeded ifdef.
Some are replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:54:45 +02:00
Takashi Iwai
f68ce62997 ALSA: ac97: Fix ifdef CONFIG_PROC_FS
Replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:52:43 +02:00
Takashi Iwai
4bce6fce79 ALSA: ak4xxx-adda: Drop unnecessary ifdef CONFIG_PROC_FS
The compiler can optimize it away if not needed.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:51:23 +02:00
Takashi Iwai
c43a55d5b1 ALSA: opl4: Fix / cleanup ifdef CONFIG_PROC_FS
Some are replaced with the new ifdef CONFIG_SND_PROC_FS.  Some are
removed by building opl4_proc.o conditionally.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:49:55 +02:00
Takashi Iwai
129a4c9f82 ALSA: dummy: Replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS
Although there shouldn't be a problem in practice (the compiler should
handle well), it's better to follow to the new Kconfig.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:47:50 +02:00
Takashi Iwai
41960d9592 ALSA: aloop: Drop unnecessary ifdef CONFIG_PROC_FS
Since the compiler can optimize away the unused code, we can reduce
the messy ifdef.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:46:05 +02:00
Luis R. Rodriguez
5944d733f3 video: fbdev: gbefb: add missing mtrr_del() calls
This driver never removed the MTRRs. Fix that.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-05-29 08:45:28 +03:00
Luis R. Rodriguez
5e200b5352 video: fbdev: radeonfb: use arch_phys_wc_add() and ioremap_wc()
Convert the driver from using the x86 specific MTRR code to
the architecture agnostic arch_phys_wc_add(). arch_phys_wc_add()
will avoid MTRR if write-combining is available, in order to
take advantage of that also ensure the ioremap'd area is requested
as write-combining.

There are a few motivations for this:

a) Take advantage of PAT when available

b) Help bury MTRR code away, MTRR is architecture specific and on
   x86 its replaced by PAT

c) Help with the goal of eventually using _PAGE_CACHE_UC over
   _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit
   de33c442e titled "x86 PAT: fix performance drop for glx,
   use UC minus for ioremap(), ioremap_nocache() and
   pci_mmap_page_range()")

The conversion done is expressed by the following Coccinelle
SmPL patch, it additionally required manual intervention to
address all the #ifdery and removal of redundant things which
arch_phys_wc_add() already addresses such as verbose message
about when MTRR fails and doing nothing when we didn't get
an MTRR.

@ mtrr_found @
expression index, base, size;
@@

-index = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);
+index = arch_phys_wc_add(base, size);

@ mtrr_rm depends on mtrr_found @
expression mtrr_found.index, mtrr_found.base, mtrr_found.size;
@@

-mtrr_del(index, base, size);
+arch_phys_wc_del(index);

@ mtrr_rm_zero_arg depends on mtrr_found @
expression mtrr_found.index;
@@

-mtrr_del(index, 0, 0);
+arch_phys_wc_del(index);

@ mtrr_rm_fb_info depends on mtrr_found @
struct fb_info *info;
expression mtrr_found.index;
@@

-mtrr_del(index, info->fix.smem_start, info->fix.smem_len);
+arch_phys_wc_del(index);

@ ioremap_replace_nocache depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap_nocache(base, size);
+info->screen_base = ioremap_wc(base, size);

@ ioremap_replace_default depends on mtrr_found @
struct fb_info *info;
expression base, size;
@@

-info->screen_base = ioremap(base, size);
+info->screen_base = ioremap_wc(base, size);

Generated-by: Coccinelle SmPL
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-05-29 08:45:28 +03:00
Takashi Iwai
b816db9d36 ALSA: core: Fix randconfig build wrt CONFIG_PROC_FS
There are a few leftover CONFIG_PROC_FS forgotten to replace with
CONFIG_SND_PROC_FS.

Fixes: cd6a65036f ('ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS')
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:21:02 +02:00
Kevin Cernekee
fbf4e262bb bus: brcmstb_gisb: Honor the "big-endian" and "native-endian" DT properties
On chips strapped for BE, we'll need to use ioread32be/iowrite32be instead of
ioread32/iowrite32.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2015-05-28 21:00:20 -07:00
Ray Jui
7dc95b40f5 ARM: BCM: Enable NAND support for iProc SoCs
Select CONFIG_MTD_NAND_BRCMNAND for all iProc SoCs

Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2015-05-28 21:00:08 -07:00
Al Viro
2159184ea0 d_walk() might skip too much
when we find that a child has died while we'd been trying to ascend,
we should go into the first live sibling itself, rather than its sibling.

Off-by-one in question had been introduced in "deal with deadlock in
d_walk()" and the fix needs to be backported to all branches this one
has been backported to.

Cc: stable@vger.kernel.org # 3.2 and later
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-05-28 23:45:30 -04:00
David S. Miller
5aab0e8a45 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:

====================
pull request (net): ipsec 2015-05-28

1) Fix a race in xfrm_state_lookup_byspi, we need to take
   the refcount before we release xfrm_state_lock.
   From Li RongQing.

2) Fix IV generation on ESN state. We used just the
   low order sequence numbers for IV generation on
   ESN, as a result the IV can repeat on the same
   state. Fix this by using the  high order sequence
   number bits too and make sure to always initialize
   the high order bits with zero. These patches are
   serious stable candidates. Fixes from Herbert Xu.

3) Fix the skb->mark handling on vti. We don't
   reset skb->mark in skb_scrub_packet anymore,
   so vti must care to restore the original
   value back after it was used to lookup the
   vti policy and state. Fixes from Alexander Duyck.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-28 20:41:35 -07:00
David S. Miller
a74eab639e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2015-05-28

1) Remove xfrm_queue_purge as this is the same as skb_queue_purge.

2) Optimize policy and state walk.

3) Use a sane return code if afinfo registration fails.

4) Only check fori a acquire state if the state is not valid.

5) Remove a unnecessary NULL check before xfrm_pol_hold
   as it checks the input for NULL.

6) Return directly if the xfrm hold queue is empty, avoid
   to take a lock as it is nothing to do in this case.

7) Optimize the inexact policy search and allow for matching
   of policies with priority ~0U.

All from Li RongQing.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-28 20:23:01 -07:00
Roger Luethi
210347e184 via-rhine: Resigning as maintainer
I don't have enough time to look after via-rhine anymore.

Signed-off-by: Roger Luethi <rl@hellgate.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-28 20:17:39 -07:00
Vladimir Zapolskiy
d7a32b6e6b net: qlcnic: clean up sysfs error codes
Replace confusing QL_STATUS_INVALID_PARAM == -1 == -EPERM with -EINVAL
and QLC_STATUS_UNSUPPORTED_CMD == -2 == -ENOENT with -EOPNOTSUPP, the
latter error code is arguable, but it is already used in the driver,
so let it be here as well.

Also remove always false (!buf) check on read(), the driver should
not care if userspace gets its EFAULT or not.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-28 20:14:45 -07:00
Thomas Elste
cd054ee165 power: bq24190_charger: Change first_time flag reset condition
The initial register reset of BQ24190 generates a charger status change
whose propagation via power_supply_changed is prevented using a flag.
This flag gets never reset so all following events are ignored as well
leading for example to userspace not detecting charger connects/disconnects.

Therefor change the reset condition of first_time flag, so only the
propagation of the first charger status change is prevented.

Signed-off-by: Thomas Elste <thomas.elste@imms.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-05-29 04:26:50 +02:00
Adrien Schildknecht
ca3f172c19 scripts/gdb: fix lx-lsmod refcnt
Commit 2f35c41f58 ("module: Replace module_ref with atomic_t refcnt")
changes the way refcnt is handled but did not update the gdb script to
use the new variable.

Since refcnt is not per-cpu anymore, we can directly read its value.

Signed-off-by: Adrien Schildknecht <adrien+dev@schischi.me>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Pantelis Koukousoulas <pktoss@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:19 -07:00
Bob Copeland
5a6b2b36a8 omfs: fix potential integer overflow in allocator
Both 'i' and 'bits_per_entry' are signed integers but the result is a
u64 block number.  Cast i to u64 to avoid truncation on 32-bit targets.

Found by Coverity (CID 200679).

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:19 -07:00
Bob Copeland
c0345ee57d omfs: fix sign confusion for bitmap loop counter
The count variable is used to iterate down to (below) zero from the size
of the bitmap and handle the one-filling the remainder of the last
partial bitmap block.  The loop conditional expects count to be signed
in order to detect when the final block is processed, after which count
goes negative.

Unfortunately, a recent change made this unsigned along with some other
related fields.  The result of is this is that during mount,
omfs_get_imap will overrun the bitmap array and corrupt memory unless
number of blocks happens to be a multiple of 8 * blocksize.

Fix by changing count back to signed: it is guaranteed to fit in an s32
without overflow due to an enforced limit on the number of blocks in the
filesystem.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:19 -07:00
Bob Copeland
3a281f9466 omfs: set error return when d_make_root() fails
A static checker found the following issue in the error path for
omfs_fill_super:

    fs/omfs/inode.c:552 omfs_fill_super()
    warn: missing error code here? 'd_make_root()' failed. 'ret' = '0'

Fix by returning -ENOMEM in this case.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Sasha Levin
dcbff39da3 fs, omfs: add NULL terminator in the end up the token list
match_token() expects a NULL terminator at the end of the token list so
that it would know where to stop.  Not having one causes it to overrun
to invalid memory.

In practice, passing a mount option that omfs didn't recognize would
sometimes panic the system.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Joe Perches
cd4e6c91a1 MAINTAINERS: update CAPABILITIES pattern
Commit 1ddd3b4e07 ("LSM: Remove unused capability.c") removed the
file, remove the file pattern.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Andrew Morton
2b1d3ae940 fs/binfmt_elf.c:load_elf_binary(): return -EINVAL on zero-length mappings
load_elf_binary() returns `retval', not `error'.

Fixes: a87938b2e2 ("fs/binfmt_elf.c: fix bug in loading of PIE binaries")
Reported-by: James Hogan <james.hogan@imgtec.com>
Cc: Michael Davidson <md@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Shreyas B. Prabhu
649b8de2f7 tracing/mm: don't trace mm_page_pcpu_drain on offline cpus
Since tracepoints use RCU for protection, they must not be called on
offline cpus.  trace_mm_page_pcpu_drain can be called on an offline cpu
in this scenario caught by LOCKDEP:

     ===============================
     [ INFO: suspicious RCU usage. ]
     4.1.0-rc1+ #9 Not tainted
     -------------------------------
     include/trace/events/kmem.h:265 suspicious rcu_dereference_check() usage!

    other info that might help us debug this:

    RCU used illegally from offline CPU!
    rcu_scheduler_active = 1, debug_locks = 1
     1 lock held by swapper/5/0:
      #0:  (&(&zone->lock)->rlock){..-...}, at: [<c0000000002073b0>] .free_pcppages_bulk+0x70/0x920

    stack backtrace:
     CPU: 5 PID: 0 Comm: swapper/5 Not tainted 4.1.0-rc1+ #9
     Call Trace:
       .dump_stack+0x98/0xd4 (unreliable)
       .lockdep_rcu_suspicious+0x108/0x170
       .free_pcppages_bulk+0x60c/0x920
       .free_hot_cold_page+0x208/0x280
       .destroy_context+0x90/0xd0
       .__mmdrop+0x58/0x160
       .idle_task_exit+0xf0/0x100
       .pnv_smp_cpu_kill_self+0x58/0x2c0
       .cpu_die+0x34/0x50
       .arch_cpu_idle_dead+0x20/0x40
       .cpu_startup_entry+0x708/0x7a0
       .start_secondary+0x36c/0x3a0
       start_secondary_prolog+0x10/0x14

Fix this by converting mm_page_pcpu_drain trace point into
TRACE_EVENT_CONDITION where condition is cpu_online(smp_processor_id())

Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Shreyas B. Prabhu
1f0c27b50f tracing/mm: don't trace mm_page_free on offline cpus
Since tracepoints use RCU for protection, they must not be called on
offline cpus.  trace_mm_page_free can be called on an offline cpu in this
scenario caught by LOCKDEP:

     ===============================
     [ INFO: suspicious RCU usage. ]
     4.1.0-rc1+ #9 Not tainted
     -------------------------------
     include/trace/events/kmem.h:170 suspicious rcu_dereference_check() usage!

    other info that might help us debug this:

    RCU used illegally from offline CPU!
    rcu_scheduler_active = 1, debug_locks = 1
     no locks held by swapper/1/0.

    stack backtrace:
     CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.1.0-rc1+ #9
     Call Trace:
       .dump_stack+0x98/0xd4 (unreliable)
       .lockdep_rcu_suspicious+0x108/0x170
       .free_pages_prepare+0x494/0x680
       .free_hot_cold_page+0x50/0x280
       .destroy_context+0x90/0xd0
       .__mmdrop+0x58/0x160
       .idle_task_exit+0xf0/0x100
       .pnv_smp_cpu_kill_self+0x58/0x2c0
       .cpu_die+0x34/0x50
       .arch_cpu_idle_dead+0x20/0x40
       .cpu_startup_entry+0x708/0x7a0
       .start_secondary+0x36c/0x3a0
       start_secondary_prolog+0x10/0x14

Fix this by converting mm_page_free trace point into TRACE_EVENT_CONDITION
where condition is cpu_online(smp_processor_id())

Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Shreyas B. Prabhu
e5feb1ebaa tracing/mm: don't trace kmem_cache_free on offline cpus
Since tracepoints use RCU for protection, they must not be called on
offline cpus.  trace_kmem_cache_free can be called on an offline cpu in
this scenario caught by LOCKDEP:

    ===============================
    [ INFO: suspicious RCU usage. ]
    4.1.0-rc1+ #9 Not tainted
    -------------------------------
    include/trace/events/kmem.h:148 suspicious rcu_dereference_check() usage!

    other info that might help us debug this:

    RCU used illegally from offline CPU!
    rcu_scheduler_active = 1, debug_locks = 1
    no locks held by swapper/1/0.

    stack backtrace:
    CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.1.0-rc1+ #9
    Call Trace:
      .dump_stack+0x98/0xd4 (unreliable)
      .lockdep_rcu_suspicious+0x108/0x170
      .kmem_cache_free+0x344/0x4b0
      .__mmdrop+0x4c/0x160
      .idle_task_exit+0xf0/0x100
      .pnv_smp_cpu_kill_self+0x58/0x2c0
      .cpu_die+0x34/0x50
      .arch_cpu_idle_dead+0x20/0x40
      .cpu_startup_entry+0x708/0x7a0
      .start_secondary+0x36c/0x3a0
      start_secondary_prolog+0x10/0x14

Fix this by converting kmem_cache_free trace point into
TRACE_EVENT_CONDITION where condition is cpu_online(smp_processor_id())

Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-28 18:25:18 -07:00
Dave Airlie
1fe7142063 Merge branch 'linux-4.1' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
Regression fix for Fermi acceleration, and fixes important to bringing
up display-less Maxwell boards.

* 'linux-4.1' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/gr/gm204: remove a stray printk
  drm/nouveau/devinit/gm100-: force devinit table execution on boards without PDISP
  drm/nouveau/devinit/gf100: make the force-post condition more obvious
  drm/nouveau/gr/gf100-: fix wrong constant definition
2015-05-29 11:13:52 +10:00
Ben Skeggs
aaea3938b5 drm/nouveau/gr/gm204: remove a stray printk
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-05-29 10:59:32 +10:00
Ben Skeggs
4d4d6f7520 drm/nouveau/devinit/gm100-: force devinit table execution on boards without PDISP
Should fix fdo#89558

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-05-29 10:59:32 +10:00
Ben Skeggs
c9ab50d210 drm/nouveau/devinit/gf100: make the force-post condition more obvious
And also more generic, so it can be used on newer chipsets.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-05-29 10:59:32 +10:00
Lars Seipel
9ee971a0b8 drm/nouveau/gr/gf100-: fix wrong constant definition
Commit 3740c82590 ("drm/nouveau/gr/gf100-: add symbolic names for
classes") introduced a wrong macro definition causing acceleration setup
to fail. Fix it.

Signed-off-by: Lars Seipel <ls@slrz.net>
Fixes: 3740c82590 ("drm/nouveau/gr/gf100-: add symbolic names for classes")
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-05-29 10:59:32 +10:00
Brian Foster
22ce1e1472 xfs: enable sparse inode chunks for v5 superblocks
Enable mounting of filesystems with sparse inode support enabled. Add
the incompat. feature bit to the *_ALL mask.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:26:33 +10:00
Brian Foster
09b5660413 xfs: skip unallocated regions of inode chunks in xfs_ifree_cluster()
xfs_ifree_cluster() is called to mark all in-memory inodes and inode
buffers as stale. This occurs after we've removed the inobt records and
dropped any references of inobt data. xfs_ifree_cluster() uses the
starting inode number to walk the namespace of inodes expected for a
single chunk a cluster buffer at a time. The cluster buffer disk
addresses are calculated by decoding the sequential inode numbers
expected from the chunk.

The problem with this approach is that if the inode chunk being removed
is a sparse chunk, not all of the buffer addresses that are calculated
as part of this sequence may be inode clusters. Attempting to acquire
the buffer based on expected inode characterstics (i.e., cluster length)
can lead to errors and is generally incorrect.

We already use a couple variables to carry requisite state from
xfs_difree() to xfs_ifree_cluster(). Rather than add a third, define a
new internal structure to carry the existing parameters through these
functions. Add an alloc field that represents the physical allocation
bitmap of inodes in the chunk being removed. Modify xfs_ifree_cluster()
to check each inode against the bitmap and skip the clusters that were
never allocated as real inodes on disk.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:26:03 +10:00
Brian Foster
10ae3dc7f2 xfs: only free allocated regions of inode chunks
An inode chunk is currently added to the transaction free list based on
a simple fsb conversion and hardcoded chunk length. The nature of sparse
chunks is such that the physical chunk of inodes on disk may consist of
one or more discontiguous parts. Blocks that reside in the holes of the
inode chunk are not inodes and could be allocated to any other use or
not allocated at all.

Refactor the existing xfs_bmap_add_free() call into the
xfs_difree_inode_chunk() helper. The new helper uses the existing
calculation if a chunk is not sparse. Otherwise, use the inobt record
holemask to free the contiguous regions of the chunk.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:22:52 +10:00
Brian Foster
26dd5217de xfs: filter out sparse regions from individual inode allocation
Inode allocation from an existing record with free inodes traditionally
selects the first inode available according to the ir_free mask. With
sparse inode chunks, the ir_free mask could refer to an unallocated
region. We must mask the unallocated regions out of ir_free before using
it to select a free inode in the chunk.

Update the xfs_inobt_first_free_inode() helper to find the first free
inode available of the allocated regions of the inode chunk.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:20:10 +10:00
Dave Airlie
95872b49ce Merge branch 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next
warning fix for tda998x

* 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  drm/i2c: tda998x: fix compiler warning for ssize_t
2015-05-29 09:19:59 +10:00
Brian Foster
1cdadee11f xfs: randomly do sparse inode allocations in DEBUG mode
Sparse inode allocations generally only occur when full inode chunk
allocation fails. This requires some level of filesystem space usage and
fragmentation.

For filesystems formatted with sparse inode chunks enabled, do random
sparse inode chunk allocs when compiled in DEBUG mode to increase test
coverage.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:19:29 +10:00
Brian Foster
56d1115c9b xfs: allocate sparse inode chunks on full chunk allocation failure
xfs_ialloc_ag_alloc() makes several attempts to allocate a full inode
chunk. If all else fails, reduce the allocation to the sparse length and
alignment and attempt to allocate a sparse inode chunk.

If sparse chunk allocation succeeds, check whether an inobt record
already exists that can track the chunk. If so, inherit and update the
existing record. Otherwise, insert a new record for the sparse chunk.

Create helpers to align sparse chunk inode records and insert or update
existing records in the inode btrees. The xfs_inobt_insert_sprec()
helper implements the merge or update semantics required for sparse
inode records with respect to both the inobt and finobt. To update the
inobt, either insert a new record or merge with an existing record. To
update the finobt, use the updated inobt record to either insert or
replace an existing record.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-05-29 09:18:32 +10:00
Russell King
2f15791c28 drm: clean up drm_mm debugfs output
The drm_mm debugfs output is difficult to read as two different formats
are used for the addresses:

0x00000080000000-0x0000008000b000: 45056: used
0x8000b000-0x80016000: 45056: free
0x00000080016000-0x0000008001b000: 20480: used
0x8001b000-0x817a1000: 24666112: free
0x000000817a1000-0x000000817a8000: 28672: used
0x000000817a8000-0x00000081ba8000: 4194304: used

Fix this by using %#018llx for all addresses, thus making the output:

0x0000000080000000-0x000000008000b000: 45056: used
0x000000008000b000-0x0000000080016000: 45056: free
0x0000000080016000-0x000000008001b000: 20480: used
0x000000008001b000-0x00000000817a1000: 24666112: free
0x00000000817a1000-0x00000000817a8000: 28672: used
0x00000000817a8000-0x0000000081ba8000: 4194304: used

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-05-29 09:17:57 +10:00
Dave Airlie
c99d153013 Merge tag 'drm-intel-next-2015-05-22' of git://anongit.freedesktop.org/drm-intel into drm-next
- cpt modeset sequence fixes from Ville
- more rps boosting tuning from Chris
- S3 support for skl (Damien)
- a pile of w/a for bxt from various people
- cleanup of primary plane pixel formats (Damien)
- a big pile of small patches with fixes and cleanups all over

* tag 'drm-intel-next-2015-05-22' of git://anongit.freedesktop.org/drm-intel: (90 commits)
  drm/i915: Update DRIVER_DATE to 20150522
  drm/i915: Introduce DRM_I915_THROTTLE_JIFFIES
  drm/i915: Use the correct destructor for freeing requests on error
  drm/i915/skl: don't fail colorkey + scaler request
  drm/i915: Enable GTT caching on gen8
  drm/i915: Move WaProgramL3SqcReg1Default:bdw to init_clock_gating()
  drm/i915: Use ilk_init_lp_watermarks() on BDW
  drm/i915: Disable FDI RX/TX before the ports
  drm/i915: Disable CRT port after pipe on PCH platforms
  drm/i915: Disable SDVO port after the pipe on PCH platforms
  drm/i915: Disable HDMI port after the pipe on PCH platforms
  drm/i915: Fix the IBX transcoder B workarounds
  drm/i915: Write the SDVO reg twice on IBX
  drm/i915: Fix DP enhanced framing for CPT
  drm/i915: Clean up the CPT DP .get_hw_state() port readout
  drm/i915: Clarfify the DP code platform checks
  drm/i915: Remove the double register write from intel_disable_hdmi()
  drm/i915: Remove a bogus 12bpc "toggle" from intel_disable_hdmi()
  drm/i915/skl: Deinit/init the display at suspend/resume
  drm/i915: Free RPS boosts for all laggards
  ...
2015-05-29 09:11:49 +10:00
Dave Airlie
a8a7cf0264 Merge branch 'drm-next-4.2' of git://people.freedesktop.org/~agd5f/linux into drm-next
for amdgpu separately next week.  Highlights for radeon:
- VCE1 support
- Bug fixes and misc cleanups

* 'drm-next-4.2' of git://people.freedesktop.org/~agd5f/linux:
  radeon: Deinline indirect register accessor functions
  drm/radeon: Fix max_vblank_count value for current display engines
  drm/radeon: stop using addr to check for BO move
  drm/radeon: clean up radeon_audio_enable
  drm/radeon: take the mode_config mutex when dealing with hpds (v2)
  drm/radeon: make dpcd parameters const
  drm/radeon: Use DECLARE_BITMAP
  drm/radeon/tn/si: enable/disable vce cg when encoding v2
  drm/radeon: add support for vce 1.0 clock gating
  drm/radeon: add VCE 1.0 support v4
  drm/radeon/dpm: add vce support for SI
  drm/radeon/dpm: add vce dpm support for TN
  drm/radeon: implement tn_set_vce_clocks
  drm/radeon: implement si_set_vce_clocks v2
  drm/radeon: allow some more VCE firmware versions
  drm/radeon: rework VCE FW size calculation
  drm/radeon: add a GPU reset counter queryable by userspace
2015-05-29 09:10:54 +10:00