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2014-12-17libceph: add SETXATTR/CMPXATTR osd operations supportYan, Zheng
Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17rbd: don't treat CEPH_OSD_OP_DELETE as extent opIlya Dryomov
CEPH_OSD_OP_DELETE is not an extent op, stop treating it as such. This sneaked in with discard patches - it's one of the three osd ops (the other two are CEPH_OSD_OP_TRUNCATE and CEPH_OSD_OP_ZERO) that discard is implemented with. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-12-17ceph: remove unused stringification macrosIlya Dryomov
These were used to report git versions a long time ago. Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17libceph: require cephx message signature by defaultYan, Zheng
Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17ceph: introduce global empty snap contextYan, Zheng
Current snaphost code does not properly handle moving inode from one empty snap realm to another empty snap realm. After changing inode's snap realm, some dirty pages' snap context can be not equal to inode's i_head_snap. This can trigger BUG() in ceph_put_wrbuffer_cap_refs() The fix is introduce a global empty snap context for all empty snap realm. This avoids triggering the BUG() for filesystem with no snapshot. Fixes: http://tracker.ceph.com/issues/9928 Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17ceph: message versioning fixesJohn Spray
There were two places we were assigning version in host byte order instead of network byte order. Also in MSG_CLIENT_SESSION we weren't setting compat_version in the header to reflect continued compatability with older MDSs. Fixes: http://tracker.ceph.com/issues/9945 Signed-off-by: John Spray <john.spray@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17libceph: update ceph_msg_header structureJohn Spray
2 bytes of what was reserved space is now used by userspace for the compat_version field. Signed-off-by: John Spray <john.spray@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17libceph: message signature supportYan, Zheng
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17libceph: store session key in cephx authorizerYan, Zheng
Session key is required when calculating message signature. Save the session key in authorizer, this avoid lookup ticket handler for each message Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17ceph, rbd: delete unnecessary checks before two function callsSF Markus Elfring
The functions ceph_put_snap_context() and iput() test whether their argument is NULL and then return immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> [idryomov@redhat.com: squashed rbd.c hunk, changelog] Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17ceph: introduce a new inode flag indicating if cached dentries are orderedYan, Zheng
After creating/deleting/renaming file, offsets of sibling dentries may change. So we can not use cached dentries to satisfy readdir. But we can still use the cached dentries to conclude -ENOENT for lookup. This patch introduces a new inode flag indicating if child dentries are ordered. The flag is set at the same time marking a directory complete. After creating/deleting/renaming file, we clear the flag on directory inode. This prevents ceph_readdir() from using cached dentries to satisfy readdir syscall. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17libceph: nuke ceph_kvfree()Ilya Dryomov
Use kvfree() from linux/mm.h instead, which is identical. Also fix the ceph_buffer comment: we will allocate with kmalloc() up to 32k - the value of PAGE_ALLOC_COSTLY_ORDER, but that really is just an implementation detail so don't mention it at all. Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17ceph: fix file lock interruptionYan, Zheng
When a lock operation is interrupted, current code sends a unlock request to MDS to undo the lock operation. This method does not work as expected because the unlock request can drop locks that have already been acquired. The fix is use the newly introduced CEPH_LOCK_FCNTL_INTR/CEPH_LOCK_FLOCK_INTR requests to interrupt blocked file lock request. These requests do not drop locks that have alread been acquired, they only interrupt blocked file lock request. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17dm thin: fix crash by initializing thin device's refcount and completion earlierMarc Dionne
Commit 80e96c5484be ("dm thin: do not allow thin device activation while pool is suspended") delayed the initialization of a new thin device's refcount and completion until after this new thin was added to the pool's active_thins list and the pool lock is released. This opens a race with a worker thread that walks the list and calls thin_get/put, noticing that the refcount goes to 0 and calling complete, freezing up the system and giving the oops below: kernel: BUG: unable to handle kernel NULL pointer dereference at (null) kernel: IP: [<ffffffff810d360b>] __wake_up_common+0x2b/0x90 kernel: Call Trace: kernel: [<ffffffff810d3683>] __wake_up_locked+0x13/0x20 kernel: [<ffffffff810d3dc7>] complete+0x37/0x50 kernel: [<ffffffffa0595c50>] thin_put+0x20/0x30 [dm_thin_pool] kernel: [<ffffffffa059aab7>] do_worker+0x667/0x870 [dm_thin_pool] kernel: [<ffffffff816a8a4c>] ? __schedule+0x3ac/0x9a0 kernel: [<ffffffff810b1aef>] process_one_work+0x14f/0x400 kernel: [<ffffffff810b206b>] worker_thread+0x6b/0x490 kernel: [<ffffffff810b2000>] ? rescuer_thread+0x260/0x260 kernel: [<ffffffff810b6a7b>] kthread+0xdb/0x100 kernel: [<ffffffff810b69a0>] ? kthread_create_on_node+0x170/0x170 kernel: [<ffffffff816ad7ec>] ret_from_fork+0x7c/0xb0 kernel: [<ffffffff810b69a0>] ? kthread_create_on_node+0x170/0x170 Set the thin device's initial refcount and initialize the completion before adding it to the pool's active_thins list in thin_ctr(). Signed-off-by: Marc Dionne <marc.dionne@your-file-system.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-12-17ALSA: hda - Add quirk for Packard Bell EasyNote MX65Takashi Iwai
Packard Bell EasyNote MX65 with AD1986A codec needs a few fixups, namely, the pin config overrides to set only the known I/O pins and the EAPD has to be turned on. In addition, add stereo mix input forcibly for avoiding the weird KDE behavior by this update. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88251 Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-17dm thin: fix missing out-of-data-space to write mode transition if blocks ↵Joe Thornber
are released Discard bios and thin device deletion have the potential to release data blocks. If the thin-pool is in out-of-data-space mode, and blocks were released, transition the thin-pool back to full write mode. The correct time to do this is just after the thin-pool metadata commit. It cannot be done before the commit because the space maps will not allow immediate reuse of the data blocks in case there's a rollback following power failure. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
2014-12-17dm thin: fix inability to discard blocks when in out-of-data-space modeJoe Thornber
When the pool was in PM_OUT_OF_SPACE mode its process_prepared_discard function pointer was incorrectly being set to process_prepared_discard_passdown rather than process_prepared_discard. This incorrect function pointer meant the discard was being passed down, but not effecting the mapping. As such any discard that was issued, in an attempt to reclaim blocks, would not successfully free data space. Reported-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
2014-12-17ALSA: usb-audio: add native DSD support for Matrix Audio DACsJurgen Kramer
This patch adds native DSD support for two XMOS based DACs from Matrix Audio: - X-Sabre - Mini-i Pro Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-17HID: Allow HID_BATTERY_STRENGTH to be enabledDaniel Nicoletti
Allows for HID_BATTERY_STRENGTH config be enabled without the need for HID module to be built-in, prior to this HID and POWER_SUPPLY had to be equal, and now we only select POWER_SUPPLY and depend on the HID module. Signed-off-by: Daniel Nicoletti <dantti12@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-12-17drm/msm: Deletion of unnecessary checks before the function call ↵Markus Elfring
"release_firmware" The release_firmware() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rob Clark <robdclark@gmail.com>
2014-12-17drm/msm: Deletion of unnecessary checks before two function callsMarkus Elfring
The functions framebuffer_release() and vunmap() perform also input parameter validation. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rob Clark <robdclark@gmail.com>
2014-12-17clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable failure due to ↵Krzysztof Kozlowski
domain being gated Audio subsystem clocks are located in separate block. On Exynos 5420 if clock for this block (from main clock domain) 'mau_epll' is gated then any read or write to audss registers will block. This kind of boot hang was observed on Arndale Octa and Peach Pi/Pit after introducing runtime PM to pl330 DMA driver. After that commit the 'mau_epll' was gated, because the "amba" clock was disabled and there were no more users of mau_epll. The system hang on one of steps: 1. Disabling unused clocks from audss block. 2. During audss GPIO setup (just before probing i2s0 because samsung_pinmux_setup() tried to access memory from audss block which was gated. Add a workaround for this by enabling the 'mau_epll' clock in probe. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
2014-12-17perf symbols: Fix use after free in filename__read_build_idMitchell Krome
In filename__read_build_id, phdr points to memory in buf, which gets realloced before a call to fseek that uses phdr->p_offset. This change stores the value of p_offset before buf is realloced, so the fseek can use the value safely. Signed-off-by: Mitchell Krome <mitchellkrome@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20141216021612.GA7199@mitchell Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17perf evlist: Use roundup_pow_of_twoArnaldo Carvalho de Melo
And remove the equivalent next_pow2{_l} functions. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-hl9ct3wcbs5deai3v5ljmuws@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Adopt roundup_pow_of_twoArnaldo Carvalho de Melo
To replace equivalent code used in the mmap_pages command line parameter handling in tools/perf. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-i44zs02xt4zexfxywpklo7km@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17perf tools: Make the mmap length autotuning more robustArnaldo Carvalho de Melo
If /proc/sys/kernel/perf_event_mlock_kb is not (power of 2 + PAGE_SIZE_in_kb) and we let the perf tools do mmap length autosizing based on that, then, for non-CAP_IPC_LOCK users when /proc/sys/kernel/perf_event_paranoid is > -1, then we get an -EINVAL that ends up in: [acme@ssdandy linux]$ trace usleep 1 Invalid argument [acme@ssdandy linux]$ perf record usleep 1 failed to mmap with 22 (Invalid argument) After this fix: [acme@ssdandy linux]$ trace usleep 1 <SNIP> 0.806 ( 0.006 ms): munmap(addr: 0x7f7e4740a000, len: 66467) = 0 0.869 ( 0.002 ms): brk( ) = 0x7bb000 0.873 ( 0.003 ms): brk(brk: 0x7dc000 ) = 0x7dc000 0.877 ( 0.001 ms): brk( ) = 0x7dc000 0.953 ( 0.058 ms): nanosleep(rqtp: 0x7fff26ab9420 ) = 0 0.959 ( 0.000 ms): exit_group( [acme@ssdandy linux]$ perf record usleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data (~759 samples) ] [acme@ssdandy linux]$ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6p6l5ou6jev6o7ymc4nn1n2a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Adopt rounddown_pow_of_two and depsArnaldo Carvalho de Melo
Will be used to make sure we pass a power of two when automatically setting up the perf_mmap addr range length, as the kernel code validating input on /proc/sys/kernel/perf_event_mlock_kb accepts any integer, if we plain use it to set up the mmap lenght, we may get an EINVAL when passing a non power of two. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-zflvep0q01dmkruf4o291l4p@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Adopt fls_long and depsArnaldo Carvalho de Melo
Will be used when adopting rounddown_pow_of_two. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-9m0tt5300q1ygv51hejjas82@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Move bitops.h from tools/perf/util to tools/Arnaldo Carvalho de Melo
So that we better mirror the kernel sources and make it available for other tools. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-mvfu6x753tksnto3t6412m93@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Introduce asm-generic/bitops.hArnaldo Carvalho de Melo
In preparation for moving linux/bitops.h from tools/perf/util/ to tools/include/. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-2wuk8vahl7voz0ie55f07c9k@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools lib: Move asm-generic/bitops/find.h code to tools/include and tools/libArnaldo Carvalho de Melo
To match the Linux kernel source code structure from where this code came from. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-fkbma1h04ki0zzdmp0dpgfyy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Whitespace prep patches for moving bitops.hArnaldo Carvalho de Melo
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6xmwcvgm2rvoayv2mf9n5sf8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Move code originally from asm-generic/atomic.h into ↵Arnaldo Carvalho de Melo
tools/include/asm-generic/ To match the Linux kernel source code structure from where this code came from. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-1ldjhvioch1uczilno5e1epl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Move code originally from linux/log2.h to tools/include/linux/Arnaldo Carvalho de Melo
From tools/perf/util/include/linux, so that it becomes accessible to other tools/. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-uqohgzilp3ebd3cbybnf3luc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17tools: Move __ffs implementation to tools/include/asm-generic/bitops/__ffs.hArnaldo Carvalho de Melo
To match the Linux kernel source code structure from where this code came from. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-gubysnp4a8hd98lxoeruak13@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-17drm/tegra: dc: Select root window for event dispatchSean Paul
In finish pageflip, the driver was not selecting the root window when dispatching events. This exposed a race where a plane update would change the window selection and cause tegra_dc_finish_page_flip to check the wrong base address. This patch also protects access to the window selection register as well as the registers affected by it. Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/tegra: gem: Use the proper size for GEM objectsThierry Reding
If the requested buffer size wasn't a multiple of the page size, the IOMMU code would round down the size to the next multiple of the page size, thereby causing translation errors. To fix this we no longer pass around the requested size but reuse the computed size of the GEM object. This is already rounded to the next page boundary, so mapping that size works out fine. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/tegra: gem: Flush buffer objects upon allocationThierry Reding
Buffers obtained via shmem may still have associated cachelines. If they aren't properly flushed they may cause framebuffer corruption if the cache gets flushed after the application has drawn to it. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/tegra: dc: Fix a potential race on page-flip completionThierry Reding
Page-flip completion could race with page-flip submission, so extend the critical section to include all accesses to page-flip related data. Reported-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/tegra: dc: Consistently use the same pipeThierry Reding
The hardware pipe numbers don't always match the DRM CRTC indices. This can happen for example if the first display controller defers probe, causing it to be registered with DRM after the second display controller. When that happens the hardware pipe numbers and DRM CRTC indices become different. Make sure that the CRTC index is always used when accessing per-CRTC VBLANK data. This can be ensured by using the drm_crtc_vblank_*() API, which will do the right thing automatically given a struct drm_crtc *. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/irq: Add drm_crtc_vblank_count()Thierry Reding
This function is the KMS native variant of drm_vblank_count(). It takes a struct drm_crtc * instead of a struct drm_device * and an index of the CRTC. Eventually the goal is to access vblank data through the CRTC only so that the per-CRTC data can be moved to struct drm_crtc. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/irq: Add drm_crtc_handle_vblank()Thierry Reding
This function is the KMS native variant of drm_handle_vblank(). It takes a struct drm_crtc * instead of a struct drm_device * and an index of the CRTC. Eventually the goal is to access vblank data through the CRTC only so that the per-CRTC data can be moved to struct drm_crtc. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17drm/irq: Add drm_crtc_send_vblank_event()Thierry Reding
This function is the KMS native variant of drm_send_vblank_event(). It takes a struct drm_crtc * instead of a struct drm_device * and an index of the CRTC. Eventually the goal is to access vblank data through the CRTC only so that the per-CRTC data can be moved to struct drm_crtc. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-17vfs: make mounts and mountstats honor root dir like mountinfo doesDmitry V. Levin
As we already show mountpoints relative to the root directory, thanks to the change made back in 2000, change show_vfsmnt() and show_vfsstat() to skip out-of-root mountpoints the same way as show_mountinfo() does. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17vfs: cleanup show_mountinfoDmitry V. Levin
Starting with commit v3.2-rc4-1-g02125a8, seq_path_root() no longer changes the value of its "struct path *root" argument. Starting with commit v3.2-rc7-104-g8c9379e, the "struct path *root" argument of seq_path_root() is const. As result, the temporary variable "root" in show_mountinfo() that holds a copy of struct path root is no longer needed. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17init: fix read-write root mountMiklos Szeredi
If mount flags don't have MS_RDONLY, iso9660 returns EACCES without actually checking if it's an iso image. This tricks mount_block_root() into retrying with MS_RDONLY. This results in a read-only root despite the "rw" boot parameter if the actual filesystem was checked after iso9660. I believe the behavior of iso9660 is okay, while that of mount_block_root() is not. It should rather try all types without MS_RDONLY and only then retry with MS_RDONLY. This change also makes the code more robust against the case when EACCES is returned despite MS_RDONLY, which would've resulted in a lockup. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17unfuck binfmt_misc.c (broken by commit e6084d4)Al Viro
scanarg(s, del) never returns s; the empty field results in s + 1. Restore the correct checks, and move NUL-termination into scanarg(), while we are at it. Incidentally, mixing "coding style cleanups" (for small values of cleanup) with functional changes is a Bad Idea(tm)... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17vm_area_operations: kill ->migrate()Al Viro
the only instance this method has ever grown was one in kernfs - one that call ->migrate() of another vm_ops if it exists. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17mac80211: free management frame keys when removing stationJohannes Berg
When writing the code to allow per-station GTKs, I neglected to take into account the management frame keys (index 4 and 5) when freeing the station and only added code to free the first four data frame keys. Fix this by iterating the array of keys over the right length. Cc: stable@vger.kernel.org Fixes: e31b82136d1a ("cfg80211/mac80211: allow per-station GTKs") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-17thermal: cpu_cooling: return ERR_PTR() for !CPU_THERMAL or !THERMAL_OFJavi Merino
The documentation of of_cpufreq_cooling_register() and cpufreq_cooling_register() say that they return ERR_PTR() on error. Accordingly, callers only check for IS_ERR(). Therefore, make them return ERR_PTR(-ENOSYS) as is customary in the kernel when config options are missing. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>