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2013-05-10Merge tag 'for-linus' of git://github.com/realmz/blackfin-linuxLinus Torvalds
Pull blackfin updates from Steven Miao. * tag 'for-linus' of git://github.com/realmz/blackfin-linux: bfin cache: dcplb map: add 16M dcplb map for BF60x blackfin: smp: fix smp build after drop asm/system.h blackfin: fix bootup core clock and system clock display Platform Nand: Set the GPIO for NAND read as input blackfin: rename vmImage to uImage after we move to buildroot blackfin: twi: Remove bogus #endif bf609: rsi: Add bf609 rsi MMR macro and board platform data. blackfin: dmc: Improve DDR2 write through in DMC effict controller.
2013-05-10Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
Pull microblaze updates from Michal Simek. * 'next' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Enable IRQ in arch_cpu_idle microblaze: Fix uaccess_ok macro microblaze: Add support for new cpu versions and target architecture microblaze: Do not select OPT_LIB_ASM by default microblaze: Fix initrd support microblaze: Do not use r6 in head.S microblaze: pci: Remove duplicated header microblaze: Set the default irq_domain microblaze: pci: Remove duplicated include from pci-common.c
2013-05-10dm cache: set config valueJoe Thornber
Share configuration option processing code between the dm cache ctr and message functions. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache: move config fnsAlasdair G Kergon
Move process_config_option() in dm-cache-target.c to make the next patch more readable. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm thin: generate event when metadata threshold passedJoe Thornber
Generate a dm event when the amount of remaining thin pool metadata space falls below a certain level. The threshold is taken to be a quarter of the size of the metadata device with a minimum threshold of 4MB. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm persistent metadata: add space map threshold callbackJoe Thornber
Add a threshold callback to dm persistent data space maps. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm persistent data: add threshold callback to space mapJoe Thornber
Add a threshold callback function to the persistent data space map interface for a subsequent patch to use. dm-thin and dm-cache are interested in knowing when they're getting low on metadata or data blocks. This patch introduces a new method for registering a callback against a threshold. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm thin: detect metadata device resizingJoe Thornber
Allow the dm thin pool metadata device to be extended. Whenever a pool is resumed, detect whether the size of the metadata device has increased, and if so, extend the metadata to use the new space. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm persistent data: support space map resizingJoe Thornber
Support extending a dm persistent data metadata space map. The extend itself is implemented by switching back to the boostrap allocator and pointing to the new space. The extra bitmap indexes are then allocated from the new space, and finally we switch back to the proper space map ops and tweak the reference counts. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm thin: open dev read only when possibleJoe Thornber
If a thin pool is created in read-only-metadata mode then only open the metadata device read-only. Previously it was always opened with FMODE_READ | FMODE_WRITE. (Note that dm_get_device() still allows read-only dm devices to be used read-write at the moment: If I create a read-only linear device for the metadata, via dmsetup load --readonly, then I can still create a rw pool out of it.) Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm thin: refactor data dev resizeJoe Thornber
Refactor device size functions in preparation for similar metadata device resizing functions. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache: replace memcpy with struct assignmentJoe Thornber
Use struct assignment rather than memcpy in dm cache. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache: fix typos in commentsJoe Thornber
Fix up some typos in dm-cache comments. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache policy: fix description of lookup fnAlasdair G Kergon
Correct the documented requirement on the return code from dm cache policy lookup functions stated in the policy module header file. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm: document iterate_devicesAlasdair G Kergon
Document iterate_devices in device-mapper.h. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm persistent data: fix error message typosJoe Thornber
Fix some typos in dm-space-map-metadata.c error messages. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache: tune migration throttlingJoe Thornber
Tune the dm cache migration throttling. i) Issue a tick every second, just in case there's no i/o going through. ii) Drop the migration threshold right down to something suitable for background work. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm mpath: enable WRITE SAME supportMike Snitzer
Enable WRITE SAME support in dm multipath. As far as multipath is concerned it is just another write request. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Tested-by: Bharata B Rao <bharata.rao@gmail.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm table: fix write same supportMike Snitzer
If device_not_write_same_capable() returns true then the iterate_devices loop in dm_table_supports_write_same() should return false. Reported-by: Bharata B Rao <bharata.rao@gmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org # v3.8+ Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm bufio: avoid a possible __vmalloc deadlockMikulas Patocka
This patch uses memalloc_noio_save to avoid a possible deadlock in dm-bufio. (it could happen only with large block size, at most PAGE_SIZE << MAX_ORDER (typically 8MiB). __vmalloc doesn't fully respect gfp flags. The specified gfp flags are used for allocation of requested pages, structures vmap_area, vmap_block and vm_struct and the radix tree nodes. However, the kernel pagetables are allocated always with GFP_KERNEL. Thus the allocation of pagetables can recurse back to the I/O layer and cause a deadlock. This patch uses the function memalloc_noio_save to set per-process PF_MEMALLOC_NOIO flag and the function memalloc_noio_restore to restore it. When this flag is set, all allocations in the process are done with implied GFP_NOIO flag, thus the deadlock can't happen. This should be backported to stable kernels, but they don't have the PF_MEMALLOC_NOIO flag and memalloc_noio_save/memalloc_noio_restore functions. So, PF_MEMALLOC should be set and restored instead. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@kernel.org Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm snapshot: fix error return code in snapshot_ctrWei Yongjun
Return -ENOMEM instead of success if unable to allocate pending exception mempool in snapshot_ctr. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: stable@vger.kernel.org Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm cache: fix error return code in cache_createWei Yongjun
Return -ENOMEM if memory allocation fails in cache_create instead of 0 (to avoid NULL pointer dereference). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: stable@vger.kernel.org Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10dm stripe: fix regression in stripe_width calculationMike Snitzer
Fix a regression in the calculation of the stripe_width in the dm stripe target which led to incorrect processing of device limits. The stripe_width is the stripe device length divided by the number of stripes. The group of commits in the range f14fa69 ("dm stripe: fix size test") to eb850de ("dm stripe: support for non power of 2 chunksize") interfered with each other (a merging error) and led to the stripe_width being set incorrectly to the stripe device length divided by chunk_size * stripe_count. For example, a stripe device's table with: 0 33553920 striped 3 512 ... should result in a stripe_width of 11184640 (33553920 / 3), but due to the bug it was getting set to 21845 (33553920 / (512 * 3)). The impact of this bug is that device topologies that previously worked fine with the stripe target are no longer considered valid. In particular, there is a higher risk of seeing this issue if one of the stripe devices has a 4K logical block size. Resulting in an error message like this: "device-mapper: table: 253:4: len=21845 not aligned to h/w logical block size 4096 of dm-1" The fix is to swap the order of the divisions and to use a temporary variable for the second one, so that width retains the intended value. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org # 3.6+ Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2013-05-10xen/pci: Used cached MSI-X capability offsetBjorn Helgaas
We now cache the MSI-X capability offset in the struct pci_dev, so no need to find the capability again. Acked-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-05-10xen/pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASKBjorn Helgaas
PCI_MSIX_FLAGS_BIRMASK is mis-named because the BIR mask is in the Table Offset register, not the flags ("Message Control" per spec) register. Acked-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-05-10Revert "ALSA: hda - Don't set up active streams twice"Takashi Iwai
This reverts commit affdb62b815b38261f09f9d4ec210a35c7ffb1f3. The commit introduced a regression with AD codecs where the stream is always clean up. Since the patch is just a minor optimization and reverting the commit fixes the issue, let's just revert it. Reported-and-tested-by: Michael Burian <michael.burian@sbg.at> Cc: <stable@vger.kernel.org> [v3.9+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-05-10ARC: [TB10x] Remove GENERIC_GPIOVineet Gupta
This tracks Alexandre Courbot's mainline GPIO rework Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Alexandre Courbot <acourbot@nvidia.com>
2013-05-09tracing/kprobes: Support soft-mode disablingMasami Hiramatsu
Support soft-mode disabling on kprobe-based dynamic events. Soft-disabling is just ignoring recording if the soft disabled flag is set. Link: http://lkml.kernel.org/r/20130509054454.30398.7237.stgit@mhiramat-M0-7522 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing/kprobes: Support ftrace_event_file base multibufferMasami Hiramatsu
Support multi-buffer on kprobe-based dynamic events by using ftrace_event_file. Link: http://lkml.kernel.org/r/20130509054449.30398.88343.stgit@mhiramat-M0-7522 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing/kprobes: Pass trace_probe directly from dispatcherMasami Hiramatsu
Pass the pointer of struct trace_probe directly from probe dispatcher to handlers. This removes redundant container_of macro uses. Same thing has already done in trace_uprobe. Link: http://lkml.kernel.org/r/20130509054441.30398.69112.stgit@mhiramat-M0-7522 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing/kprobes: Increment probe hit-count even if it is used by perfMasami Hiramatsu
Increment probe hit-count for profiling even if it is used by perf tool. Same thing has already done in trace_uprobe. Link: http://lkml.kernel.org/r/20130509054436.30398.21133.stgit@mhiramat-M0-7522 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing/kprobes: Use bool for retprobe checkerMasami Hiramatsu
Use bool instead of int for kretprobe checker. Link: http://lkml.kernel.org/r/20130509054431.30398.38561.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09ftrace: Fix function probe when more than one probe is addedSteven Rostedt (Red Hat)
When the first function probe is added and the function tracer is updated the functions are modified to call the probe. But when a second function is added, it updates the function records to have the second function also update, but it fails to update the actual function itself. This prevents the second (or third or forth and so on) probes from having their functions called. # echo vfs_symlink:enable_event:sched:sched_switch > set_ftrace_filter # echo vfs_unlink:enable_event:sched:sched_switch > set_ftrace_filter # cat trace # tracer: nop # # entries-in-buffer/entries-written: 0/0 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | # touch /tmp/a # rm /tmp/a # cat trace # tracer: nop # # entries-in-buffer/entries-written: 0/0 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | # ln -s /tmp/a # cat trace # tracer: nop # # entries-in-buffer/entries-written: 414/414 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | <idle>-0 [000] d..3 2847.923031: sched_switch: prev_comm=swapper/0 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=2786 next_prio=120 <...>-3114 [001] d..4 2847.923035: sched_switch: prev_comm=ln prev_pid=3114 prev_prio=120 prev_state=x ==> next_comm=swapper/1 next_pid=0 next_prio=120 bash-2786 [000] d..3 2847.923535: sched_switch: prev_comm=bash prev_pid=2786 prev_prio=120 prev_state=S ==> next_comm=kworker/0:1 next_pid=34 next_prio=120 kworker/0:1-34 [000] d..3 2847.923552: sched_switch: prev_comm=kworker/0:1 prev_pid=34 prev_prio=120 prev_state=S ==> next_comm=swapper/0 next_pid=0 next_prio=120 <idle>-0 [002] d..3 2847.923554: sched_switch: prev_comm=swapper/2 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=sshd next_pid=2783 next_prio=120 sshd-2783 [002] d..3 2847.923660: sched_switch: prev_comm=sshd prev_pid=2783 prev_prio=120 prev_state=S ==> next_comm=swapper/2 next_pid=0 next_prio=120 Still need to update the functions even though the probe itself does not need to be registered again when added a new probe. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09ftrace: Fix the output of enabled_functions debug fileSteven Rostedt (Red Hat)
The enabled_functions debugfs file was created to be able to see what functions have been modified from nops to calling a tracer. The current method uses the counter in the function record. As when a ftrace_ops is registered to a function, its count increases. But that doesn't mean that the function is actively being traced. /proc/sys/kernel/ftrace_enabled can be set to zero which would disable it, as well as something can go wrong and we can think its enabled when only the counter is set. The record's FTRACE_FL_ENABLED flag is set or cleared when its function is modified. That is a much more accurate way of knowing what function is enabled or not. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09ftrace: Fix locking in register_ftrace_function_probe()Steven Rostedt (Red Hat)
The iteration of the ftrace function list and the call to ftrace_match_record() need to be protected by the ftrace_lock. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing: Add helper function trace_create_new_event() to remove duplicate codeSteven Rostedt (Red Hat)
Both __trace_add_new_event() and __trace_early_add_new_event() do basically the same thing, except that __trace_add_new_event() does a little more. Instead of having duplicate code between the two functions, add a helper function trace_create_new_event() that both can use. This will help against having bugs fixed in one function but not the other. Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing: Modify soft-mode only if there's no other referrerMasami Hiramatsu
Modify soft-mode flag only if no other soft-mode referrer (currently only the ftrace triggers) by using a reference counter in each ftrace_event_file. Without this fix, adding and removing several different enable/disable_event triggers on the same event clear soft-mode bit from the ftrace_event_file. This also happens with a typo of glob on setting triggers. e.g. # echo vfs_symlink:enable_event:net:netif_rx > set_ftrace_filter # cat events/net/netif_rx/enable 0* # echo typo_func:enable_event:net:netif_rx > set_ftrace_filter # cat events/net/netif_rx/enable 0 # cat set_ftrace_filter #### all functions enabled #### vfs_symlink:enable_event:net:netif_rx:unlimited As above, we still have a trigger, but soft-mode is gone. Link: http://lkml.kernel.org/r/20130509054429.30398.7464.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: David Sharp <dhsharp@google.com> Cc: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing: Indicate enabled soft-mode in enable fileMasami Hiramatsu
Indicate enabled soft-mode event as "1*" in "enable" file for each event, because it can be soft-disabled when disable_event trigger is hit. Link: http://lkml.kernel.org/r/20130509054426.30398.28202.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09tracing/kprobes: Fix to increment return event probe hit-countMasami Hiramatsu
Fix to increment probe hit-count for function return event. Link: http://lkml.kernel.org/r/20130509054424.30398.34058.stgit@mhiramat-M0-7522 Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09ftrace: Cleanup regex_lock and ftrace_lock around hash updatingMasami Hiramatsu
Cleanup regex_lock and ftrace_lock locking points around ftrace_ops hash update code. The new rule is that regex_lock protects ops->*_hash read-update-write code for each ftrace_ops. Usually, hash update is done by following sequence. 1. allocate a new local hash and copy the original hash. 2. update the local hash. 3. move(actually, copy) back the local hash to ftrace_ops. 4. update ftrace entries if needed. 5. release the local hash. This makes regex_lock protect #1-#4, and ftrace_lock to protect #3, #4 and adding and removing ftrace_ops from the ftrace_ops_list. The ftrace_lock protects #3 as well because the move functions update the entries too. Link: http://lkml.kernel.org/r/20130509054421.30398.83411.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09ftrace, kprobes: Fix a deadlock on ftrace_regex_lockMasami Hiramatsu
Fix a deadlock on ftrace_regex_lock which happens when setting an enable_event trigger on dynamic kprobe event as below. ---- sh-2.05b# echo p vfs_symlink > kprobe_events sh-2.05b# echo vfs_symlink:enable_event:kprobes:p_vfs_symlink_0 > set_ftrace_filter ============================================= [ INFO: possible recursive locking detected ] 3.9.0+ #35 Not tainted --------------------------------------------- sh/72 is trying to acquire lock: (ftrace_regex_lock){+.+.+.}, at: [<ffffffff810ba6c1>] ftrace_set_hash+0x81/0x1f0 but task is already holding lock: (ftrace_regex_lock){+.+.+.}, at: [<ffffffff810b7cbd>] ftrace_regex_write.isra.29.part.30+0x3d/0x220 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(ftrace_regex_lock); lock(ftrace_regex_lock); *** DEADLOCK *** ---- To fix that, this introduces a finer regex_lock for each ftrace_ops. ftrace_regex_lock is too big of a lock which protects all filter/notrace_hash operations, but it doesn't need to be a global lock after supporting multiple ftrace_ops because each ftrace_ops has its own filter/notrace_hash. Link: http://lkml.kernel.org/r/20130509054417.30398.84254.stgit@mhiramat-M0-7522 Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> [ Added initialization flag and automate mutex initialization for non ftrace.c ftrace_probes. ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2013-05-09eCryptfs: Use the ablkcipher crypto APITyler Hicks
Make the switch from the blkcipher kernel crypto interface to the ablkcipher interface. encrypt_scatterlist() and decrypt_scatterlist() now use the ablkcipher interface but, from the eCryptfs standpoint, still treat the crypto operation as a synchronous operation. They submit the async request and then wait until the operation is finished before they return. Most of the changes are contained inside those two functions. Despite waiting for the completion of the crypto operation, the ablkcipher interface provides performance increases in most cases when used on AES-NI capable hardware. Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Acked-by: Colin King <colin.king@canonical.com> Reviewed-by: Zeev Zilberman <zeev@annapurnaLabs.com> Cc: Dustin Kirkland <dustin.kirkland@gazzang.com> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Ying Huang <ying.huang@intel.com> Cc: Thieu Le <thieule@google.com> Cc: Li Wang <dragonylffly@163.com> Cc: Jarkko Sakkinen <jarkko.sakkinen@iki.fi>
2013-05-09Merge tag 'please-pull-pstore' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull trivial pstore update from Tony Luck: "Couple of pstore cleanups" It turns out that the kmemdup() conversion ends up being undone by the fact that the memory block also needed the ecc information (see commit bd08ec33b5c2: "pstore/ram: Restore ecc information block"), so all that remains after merging is the error return code change. * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: pstore/ram: fix error return code in ramoops_probe() fs: pstore: Replaced calls to kmalloc and memcpy with kmemdup
2013-05-09Merge git://git.infradead.org/users/willy/linux-nvmeLinus Torvalds
Pull NVMe driver update from Matthew Wilcox: "Lots of exciting new features in the NVM Express driver this time, including support for emulating SCSI commands, discard support and the ability to submit per-sector metadata with I/Os. It's still mostly bugfixes though!" * git://git.infradead.org/users/willy/linux-nvme: (27 commits) NVMe: Use user defined admin ioctl timeout NVMe: Simplify Firmware Activate code slightly NVMe: Only clear the enable bit when disabling controller NVMe: Wait for device to acknowledge shutdown NVMe: Schedule timeout for sync commands NVMe: Meta-data support in NVME_IOCTL_SUBMIT_IO NVMe: Device specific stripe size handling NVMe: Split non-mergeable bio requests NVMe: Remove dead code in nvme_dev_add NVMe: Check for NULL memory in nvme_dev_add NVMe: Fix error clean-up on nvme_alloc_queue NVMe: Free admin queue on request_irq error NVMe: Add scsi unmap to SG_IO NVMe: queue usage fixes in nvme-scsi NVMe: Set TASK_INTERRUPTIBLE before processing queues NVMe: Add a character device for each nvme device NVMe: Fix endian-related problems in user I/O submission path NVMe: Fix I/O cancellation status on big-endian machines NVMe: Fix sparse warnings in scsi emulation NVMe: Don't fail initialisation unnecessarily ...
2013-05-09Merge tag 'acpi-fixes-3.10-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPICA fixes from Rafael Wysocki: - _INI regression fix from Tomasz Nowicki. - Fix for a possible memory leak in _OSI support routine from Jung-uk Kim. - Fix for a possible buffer overflow during field unit read operation from Bob Moore. * tag 'acpi-fixes-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPICA: ACPICA: Fix for _INI regression ACPICA: _OSI support: Fix possible memory leak ACPICA: Fix possible buffer overflow during a field unit read operation
2013-05-09Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes and straggler patches from Olof Johansson: "A collection of fixes for fall out from 3.10 merge window, some build fixes and warning cleanups and a small handful of patches that were small and contained and made sense to still include in 3.10 (some of these have also been in -next since the merge window opened). Largest continous series is for OMAP, but there's a handful for other platforms. For i.MX, one of the patches are framebuffer fixups due to fallout during the merge window, and the other removes some stale and broken code." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits) ARM: exynos: dts: Fixed vbus-gpios ARM: EXYNOS5: Fix kernel dump in AFTR idle mode ARM: ux500: Rid ignored return value of regulator_enable() compiler warning ARM: ux500: read the correct soc_id number ARM: exynos: dts: cros5250: add cyapa trackpad video: mxsfb: Adapt to new videomode API ARM: imx: Select GENERIC_ALLOCATOR ARM: imx: compile fix for hotplug.c ARM: dts: don't assume boards are using twl4030 for omap3 ARM: OMAP2+: Remove bogus IS_ERR_OR_NULL checking from id.c ARM: dts: Configure and fix the McSPI pins for 4430sdp ARM: dts: AM33XX: Add GPMC node ARM: dts: OMAP4460: Fix CPU OPP voltages ARM: dts: OMAP36xx: Fix CPU OPP voltages ARM: OMAP4+: omap2plus_defconfig: Enable audio via TWL6040 as module ARM: OMAP2: AM33XX: id: Add support for new AM335x PG2.1 Si omap: mux: add AM/DM37x gpios ARM: OMAP1: DMA: fix error handling in omap1_system_dma_init() ARM: OMAP2+: omap_device: use late_initcall_sync ARM: OMAP: RX-51: change probe order of touchscreen and panel SPI devices ...
2013-05-09Merge tag 'xtensa-next-20130508' of git://github.com/czankel/xtensa-linuxLinus Torvalds
Pull xtensa updates from Chris Zankel: "Support for the latest MMU architecture that allows for a larger accessible memory region, and various bug-fixes" * tag 'xtensa-next-20130508' of git://github.com/czankel/xtensa-linux: xtensa: Switch to asm-generic/linkage.h xtensa: fix redboot load address xtensa: ISS: fix timer_lock usage in rs_open xtensa: disable IRQs while IRQ handler is running xtensa: enable lockdep support xtensa: fix arch_irqs_disabled_flags implementation xtensa: add irq flags trace support xtensa: provide custom CALLER_ADDR* implementations xtensa: add stacktrace support xtensa: clean up stpill_registers xtensa: don't use a7 in simcalls xtensa: don't attempt to use unconfigured timers xtensa: provide default platform_pcibios_init implementation xtensa: remove KCORE_ELF again xtensa: document MMUv3 setup sequence xtensa: add MMU v3 support xtensa: fix ibreakenable register update xtensa: fix oprofile building as module
2013-05-09Merge tag 'arc-v3.10-rc1-part1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC port updates from Vineet Gupta: "Support for two new platforms based on ARC700: - Abilis TB10x SoC [Chritisian/Pierrick] - Simulator only System-C Model [Mischa] ARC specific MM improvements: - Avoid full TLB flush (ASID increment) on munmap (even single page) - VIPT Cache Flushing improvements + Delayed dcache flush for non-aliasing dcache (big performance boost) + icache flush aliasing agnostic (no need to kill all possible aliases) Others: - Avoid needless rebuild of DTB files for every kernel build - Remove builtin cmdline as that is already provided by DeviceTree/bootargs - Fixing unaligned access emulation corner case - checkpatch fixes [Sachin] - Various fixlets [Noam] - Minor build failures/cleanups" * tag 'arc-v3.10-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (35 commits) ARC: [mm] Lazy D-cache flush (non aliasing VIPT) ARC: [mm] micro-optimize page size icache invalidate ARC: [mm] remove the pessimistic all-alias-invalidate icache helpers ARC: [mm] consolidate icache/dcache sync code ARC: [mm] optimise icache flush for kernel mappings ARC: [mm] optimise icache flush for user mappings ARC: [mm] optimize needless full mm TLB flush on munmap ARC: Add support for nSIM OSCI System C model ARC: [TB10x] Adapt device tree to new compatible string ARC: [TB10x] Add support for TB10x platform ARC: [TB10x] Device tree of TB100 and TB101 Development Kits ARC: Prepare interrupt code for external controllers ARC: Allow embedded arc-intc to be properly placed in DT intc hierarchy ARC: [cmdline] Don't overwrite u-boot provided bootargs ARC: [cmdline] Remove CONFIG_CMDLINE ARC: [plat-arcfpga] defconfig update ARC: unaligned access emulation broken if callee-reg dest of LD/ST ARC: unaligned access emulation error handling consolidation ARC: Debug/crash-printing Improvements ARC: fix typo with clock speed ...
2013-05-09Merge branch 'stable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile update from Chris Metcalf: "The interesting bug fix is support for the upcoming "4.2" release of the Tilera hypervisor, which by default launches Linux at privilege level 2 instead of 1. The fix lets new and old hypervisors and Linuxes interoperate more smoothly, so I've tagged it for stable@kernel.org so that older Linuxes will be able to boot under the newer hypervisor." * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: usb: tilegx: fix memleak when create hcd fail arch/tile: remove inline marking of EXPORT_SYMBOL functions rtc: rtc-tile: add missing platform_device_unregister() when module exit tile: support new Tilera hypervisor
2013-05-09shm: fix null pointer deref when userspace specifies invalid hugepage sizeLi Zefan
Dave reported an oops triggered by trinity: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: newseg+0x10d/0x390 PGD cf8c1067 PUD cf8c2067 PMD 0 Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC CPU: 2 PID: 7636 Comm: trinity-child2 Not tainted 3.9.0+#67 ... Call Trace: ipcget+0x182/0x380 SyS_shmget+0x5a/0x60 tracesys+0xdd/0xe2 This bug was introduced by commit af73e4d9506d ("hugetlbfs: fix mmap failure in unaligned size request"). Reported-by: Dave Jones <davej@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Li Zefan <lizfan@huawei.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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