- 24 Mar, 2017 1 commit
-
-
Dave Airlie authored
Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes Just several fixups, - fix page fault and vblank timeout issues due to delayed vblank handling. - fix panel driver probing to fail without te-gpios property. - fix potential security hole by using "%pK" format. - fix wrong if statement condition. And one cleanup which removes Exynos4415 SoC support which is not supported anymore. * 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm/exynos/dsi: make te-gpios optional drm/exynos: Print kernel pointers in a restricted form drm/exynos/decon5433: fix software trigger mask drm/exynos/fimd: signal frame done interrupt at front porch drm/exynos/decon5433: signal frame done interrupt at front porch drm/exynos/decon5433: fix vblank event handling drm/exynos: move crtc event handling to drivers callbacks drm/exynos: Remove support for Exynos4415 (SoC not supported anymore) drm/exynos/decon5433: & vs | typo
-
- 23 Mar, 2017 1 commit
-
-
Dave Airlie authored
Merge tag 'drm-intel-fixes-2017-03-22' of git://anongit.freedesktop.org/git/drm-intel into drm-fixes drm/i915 fixes for v4.11-rc4 * tag 'drm-intel-fixes-2017-03-22' of git://anongit.freedesktop.org/git/drm-intel: drm/i915: make context status notifier head be per engine drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker) drm/i915/gvt: Fix gvt scheduler interval time drm/i915/gvt: GVT pin/unpin shadow context drm/i915/gvt: scan shadow indirect context image when valid drm/i915/kvmgt: fix suspicious rcu dereference usage drm/i915/gvt: add enable_execlists check before enable gvt drm/i915/gvt: Remove bogus retry around i915_wait_request drm/i915/gvt: correct the ggtt valid bit check in pipe control command drm/i915/gvt: replace the gvt_err with gvt_vgpu_err drm/i915/gvt: handle force-nonpriv registers, cmd parser part drm/i915: Do .init_clock_gating() earlier to avoid it clobbering watermarks drm/i915/glk: Remove MODULE_FIRMWARE() tag from Geminilake's DMC drm/i915: Reject HDMI 12bpc if the sink doesn't indicate support drm/i915: Always call i915_gem_reset_finish() following i915_gem_reset_prepare() drm/i915: Stop using RP_DOWN_EI on Baytrail drm/i915: Drop support for I915_EXEC_CONSTANTS_* execbuf parameters. drm/i915: Only enable hotplug interrupts if the display interrupts are enabled drm/i915: Disable engine->irq_tasklet around resets drm/i915: Split GEM resetting into 3 phases
-
- 21 Mar, 2017 11 commits
-
-
Changbin Du authored
GVTg has introduced the context status notifier to schedule the GVTg workload. At that time, the notifier is bound to GVTg context only, so GVTg is not aware of host workloads. Now we are going to improve GVTg's guest workload scheduler policy, and add Guc emulation support for new Gen graphics. Both these two features require acknowledgment for all contexts running on hardware. (But will not alter host workload.) So here try to make some change. The change is simple: 1. Move the context status notifier head from i915_gem_context to intel_engine_cs. Which means there is a notifier head per engine instead of per context. Execlist driver still call notifier for each context sched-in/out events of current engine. 2. At GVTg side, it binds a notifier_block for each physical engine at GVTg initialization period. Then GVTg can hear all context status events. In this patch, GVTg do nothing for host context event, but later will add a function there. But in any case, the notifier callback is a noop if this is no active vGPU. Since intel_gvt_init() is called at early initialization stage and require the status notifier head has been initiated, I initiate it in intel_engine_setup(). v2: remove a redundant newline. (chris) Fixes: 3c7ba635 ("drm/i915: Introduce execlist context status change notification") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100232Signed-off-by:Changbin Du <changbin.du@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Zhi Wang <zhi.a.wang@intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170313024711.28591-1-changbin.du@intel.comAcked-by:
Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170321144720.17020-1-chris@chris-wilson.co.uk
-
Chris Wilson authored
The rcu_barrier() takes the cpu_hotplug mutex which itself is not reclaim-safe, and so rcu_barrier() is illegal from inside the shrinker. [ 309.661373] ========================================================= [ 309.661376] [ INFO: possible irq lock inversion dependency detected ] [ 309.661380] 4.11.0-rc1-CI-CI_DRM_2333+ #1 Tainted: G W [ 309.661383] --------------------------------------------------------- [ 309.661386] gem_exec_gttfil/6435 just changed the state of lock: [ 309.661389] (rcu_preempt_state.barrier_mutex){+.+.-.}, at: [<ffffffff81100731>] _rcu_barrier+0x31/0x160 [ 309.661399] but this lock took another, RECLAIM_FS-unsafe lock in the past: [ 309.661402] (cpu_hotplug.lock){+.+.+.} [ 309.661404] and interrupts could create inverse lock ordering between them. [ 309.661410] other info that might help us debug this: [ 309.661414] Possible interrupt unsafe locking scenario: [ 309.661417] CPU0 CPU1 [ 309.661419] ---- ---- [ 309.661421] lock(cpu_hotplug.lock); [ 309.661425] local_irq_disable(); [ 309.661432] lock(rcu_preempt_state.barrier_mutex); [ 309.661441] lock(cpu_hotplug.lock); [ 309.661446] <Interrupt> [ 309.661448] lock(rcu_preempt_state.barrier_mutex); [ 309.661453] *** DEADLOCK *** [ 309.661460] 4 locks held by gem_exec_gttfil/6435: [ 309.661464] #0: (sb_writers#10){.+.+.+}, at: [<ffffffff8120d83d>] vfs_write+0x17d/0x1f0 [ 309.661475] #1: (debugfs_srcu){......}, at: [<ffffffff81320491>] debugfs_use_file_start+0x41/0xa0 [ 309.661486] #2: (&attr->mutex){+.+.+.}, at: [<ffffffff8123a3e7>] simple_attr_write+0x37/0xe0 [ 309.661495] #3: (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa0091b4a>] i915_drop_caches_set+0x3a/0x150 [i915] [ 309.661540] the shortest dependencies between 2nd lock and 1st lock: [ 309.661547] -> (cpu_hotplug.lock){+.+.+.} ops: 829 { [ 309.661553] HARDIRQ-ON-W at: [ 309.661560] __lock_acquire+0x5e5/0x1b50 [ 309.661565] lock_acquire+0xc9/0x220 [ 309.661572] __mutex_lock+0x6e/0x990 [ 309.661576] mutex_lock_nested+0x16/0x20 [ 309.661583] get_online_cpus+0x61/0x80 [ 309.661590] kmem_cache_create+0x25/0x1d0 [ 309.661596] debug_objects_mem_init+0x30/0x249 [ 309.661602] start_kernel+0x341/0x3fe [ 309.661607] x86_64_start_reservations+0x2a/0x2c [ 309.661612] x86_64_start_kernel+0x173/0x186 [ 309.661619] verify_cpu+0x0/0xfc [ 309.661622] SOFTIRQ-ON-W at: [ 309.661627] __lock_acquire+0x611/0x1b50 [ 309.661632] lock_acquire+0xc9/0x220 [ 309.661636] __mutex_lock+0x6e/0x990 [ 309.661641] mutex_lock_nested+0x16/0x20 [ 309.661646] get_online_cpus+0x61/0x80 [ 309.661650] kmem_cache_create+0x25/0x1d0 [ 309.661655] debug_objects_mem_init+0x30/0x249 [ 309.661660] start_kernel+0x341/0x3fe [ 309.661664] x86_64_start_reservations+0x2a/0x2c [ 309.661669] x86_64_start_kernel+0x173/0x186 [ 309.661674] verify_cpu+0x0/0xfc [ 309.661677] RECLAIM_FS-ON-W at: [ 309.661682] mark_held_locks+0x6f/0xa0 [ 309.661687] lockdep_trace_alloc+0xb3/0x100 [ 309.661693] kmem_cache_alloc_trace+0x31/0x2e0 [ 309.661699] __smpboot_create_thread.part.1+0x27/0xe0 [ 309.661704] smpboot_create_threads+0x61/0x90 [ 309.661709] cpuhp_invoke_callback+0x9c/0x8a0 [ 309.661713] cpuhp_up_callbacks+0x31/0xb0 [ 309.661718] _cpu_up+0x7a/0xc0 [ 309.661723] do_cpu_up+0x5f/0x80 [ 309.661727] cpu_up+0xe/0x10 [ 309.661734] smp_init+0x71/0xb3 [ 309.661738] kernel_init_freeable+0x94/0x19e [ 309.661743] kernel_init+0x9/0xf0 [ 309.661748] ret_from_fork+0x2e/0x40 [ 309.661752] INITIAL USE at: [ 309.661757] __lock_acquire+0x234/0x1b50 [ 309.661761] lock_acquire+0xc9/0x220 [ 309.661766] __mutex_lock+0x6e/0x990 [ 309.661771] mutex_lock_nested+0x16/0x20 [ 309.661775] get_online_cpus+0x61/0x80 [ 309.661780] __cpuhp_setup_state+0x44/0x170 [ 309.661785] page_alloc_init+0x23/0x3a [ 309.661790] start_kernel+0x124/0x3fe [ 309.661794] x86_64_start_reservations+0x2a/0x2c [ 309.661799] x86_64_start_kernel+0x173/0x186 [ 309.661804] verify_cpu+0x0/0xfc [ 309.661807] } [ 309.661813] ... key at: [<ffffffff81e37690>] cpu_hotplug+0xb0/0x100 [ 309.661817] ... acquired at: [ 309.661821] lock_acquire+0xc9/0x220 [ 309.661825] __mutex_lock+0x6e/0x990 [ 309.661829] mutex_lock_nested+0x16/0x20 [ 309.661833] get_online_cpus+0x61/0x80 [ 309.661837] _rcu_barrier+0x9f/0x160 [ 309.661841] rcu_barrier+0x10/0x20 [ 309.661847] netdev_run_todo+0x5f/0x310 [ 309.661852] rtnl_unlock+0x9/0x10 [ 309.661856] default_device_exit_batch+0x133/0x150 [ 309.661862] ops_exit_list.isra.0+0x4d/0x60 [ 309.661866] cleanup_net+0x1d8/0x2c0 [ 309.661872] process_one_work+0x1f4/0x6d0 [ 309.661876] worker_thread+0x49/0x4a0 [ 309.661881] kthread+0x107/0x140 [ 309.661884] ret_from_fork+0x2e/0x40 [ 309.661890] -> (rcu_preempt_state.barrier_mutex){+.+.-.} ops: 179 { [ 309.661896] HARDIRQ-ON-W at: [ 309.661901] __lock_acquire+0x5e5/0x1b50 [ 309.661905] lock_acquire+0xc9/0x220 [ 309.661910] __mutex_lock+0x6e/0x990 [ 309.661914] mutex_lock_nested+0x16/0x20 [ 309.661919] _rcu_barrier+0x31/0x160 [ 309.661923] rcu_barrier+0x10/0x20 [ 309.661928] netdev_run_todo+0x5f/0x310 [ 309.661932] rtnl_unlock+0x9/0x10 [ 309.661936] default_device_exit_batch+0x133/0x150 [ 309.661941] ops_exit_list.isra.0+0x4d/0x60 [ 309.661946] cleanup_net+0x1d8/0x2c0 [ 309.661951] process_one_work+0x1f4/0x6d0 [ 309.661955] worker_thread+0x49/0x4a0 [ 309.661960] kthread+0x107/0x140 [ 309.661964] ret_from_fork+0x2e/0x40 [ 309.661968] SOFTIRQ-ON-W at: [ 309.661972] __lock_acquire+0x611/0x1b50 [ 309.661977] lock_acquire+0xc9/0x220 [ 309.661981] __mutex_lock+0x6e/0x990 [ 309.661986] mutex_lock_nested+0x16/0x20 [ 309.661990] _rcu_barrier+0x31/0x160 [ 309.661995] rcu_barrier+0x10/0x20 [ 309.661999] netdev_run_todo+0x5f/0x310 [ 309.662003] rtnl_unlock+0x9/0x10 [ 309.662008] default_device_exit_batch+0x133/0x150 [ 309.662013] ops_exit_list.isra.0+0x4d/0x60 [ 309.662017] cleanup_net+0x1d8/0x2c0 [ 309.662022] process_one_work+0x1f4/0x6d0 [ 309.662027] worker_thread+0x49/0x4a0 [ 309.662031] kthread+0x107/0x140 [ 309.662035] ret_from_fork+0x2e/0x40 [ 309.662039] IN-RECLAIM_FS-W at: [ 309.662043] __lock_acquire+0x638/0x1b50 [ 309.662048] lock_acquire+0xc9/0x220 [ 309.662053] __mutex_lock+0x6e/0x990 [ 309.662058] mutex_lock_nested+0x16/0x20 [ 309.662062] _rcu_barrier+0x31/0x160 [ 309.662067] rcu_barrier+0x10/0x20 [ 309.662089] i915_gem_shrink_all+0x33/0x40 [i915] [ 309.662109] i915_drop_caches_set+0x141/0x150 [i915] [ 309.662114] simple_attr_write+0xc7/0xe0 [ 309.662119] full_proxy_write+0x4f/0x70 [ 309.662124] __vfs_write+0x23/0x120 [ 309.662128] vfs_write+0xc6/0x1f0 [ 309.662133] SyS_write+0x44/0xb0 [ 309.662138] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 309.662142] INITIAL USE at: [ 309.662147] __lock_acquire+0x234/0x1b50 [ 309.662151] lock_acquire+0xc9/0x220 [ 309.662156] __mutex_lock+0x6e/0x990 [ 309.662160] mutex_lock_nested+0x16/0x20 [ 309.662165] _rcu_barrier+0x31/0x160 [ 309.662169] rcu_barrier+0x10/0x20 [ 309.662174] netdev_run_todo+0x5f/0x310 [ 309.662178] rtnl_unlock+0x9/0x10 [ 309.662183] default_device_exit_batch+0x133/0x150 [ 309.662188] ops_exit_list.isra.0+0x4d/0x60 [ 309.662192] cleanup_net+0x1d8/0x2c0 [ 309.662197] process_one_work+0x1f4/0x6d0 [ 309.662202] worker_thread+0x49/0x4a0 [ 309.662206] kthread+0x107/0x140 [ 309.662210] ret_from_fork+0x2e/0x40 [ 309.662214] } [ 309.662220] ... key at: [<ffffffff81e4e1c8>] rcu_preempt_state+0x508/0x780 [ 309.662225] ... acquired at: [ 309.662229] check_usage_forwards+0x12b/0x130 [ 309.662233] mark_lock+0x360/0x6f0 [ 309.662237] __lock_acquire+0x638/0x1b50 [ 309.662241] lock_acquire+0xc9/0x220 [ 309.662245] __mutex_lock+0x6e/0x990 [ 309.662249] mutex_lock_nested+0x16/0x20 [ 309.662253] _rcu_barrier+0x31/0x160 [ 309.662257] rcu_barrier+0x10/0x20 [ 309.662279] i915_gem_shrink_all+0x33/0x40 [i915] [ 309.662298] i915_drop_caches_set+0x141/0x150 [i915] [ 309.662303] simple_attr_write+0xc7/0xe0 [ 309.662307] full_proxy_write+0x4f/0x70 [ 309.662311] __vfs_write+0x23/0x120 [ 309.662315] vfs_write+0xc6/0x1f0 [ 309.662319] SyS_write+0x44/0xb0 [ 309.662323] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 309.662329] stack backtrace: [ 309.662335] CPU: 1 PID: 6435 Comm: gem_exec_gttfil Tainted: G W 4.11.0-rc1-CI-CI_DRM_2333+ #1 [ 309.662342] Hardware name: Hewlett-Packard HP Compaq 8100 Elite SFF PC/304Ah, BIOS 786H1 v01.13 07/14/2011 [ 309.662348] Call Trace: [ 309.662354] dump_stack+0x67/0x92 [ 309.662359] print_irq_inversion_bug.part.19+0x1a4/0x1b0 [ 309.662365] check_usage_forwards+0x12b/0x130 [ 309.662369] mark_lock+0x360/0x6f0 [ 309.662374] ? print_shortest_lock_dependencies+0x1a0/0x1a0 [ 309.662379] __lock_acquire+0x638/0x1b50 [ 309.662383] ? __mutex_unlock_slowpath+0x3e/0x2e0 [ 309.662388] ? trace_hardirqs_on+0xd/0x10 [ 309.662392] ? _rcu_barrier+0x31/0x160 [ 309.662396] lock_acquire+0xc9/0x220 [ 309.662400] ? _rcu_barrier+0x31/0x160 [ 309.662404] ? _rcu_barrier+0x31/0x160 [ 309.662409] __mutex_lock+0x6e/0x990 [ 309.662412] ? _rcu_barrier+0x31/0x160 [ 309.662416] ? _rcu_barrier+0x31/0x160 [ 309.662421] ? synchronize_rcu_expedited+0x35/0xb0 [ 309.662426] ? _raw_spin_unlock_irqrestore+0x52/0x60 [ 309.662434] mutex_lock_nested+0x16/0x20 [ 309.662438] _rcu_barrier+0x31/0x160 [ 309.662442] rcu_barrier+0x10/0x20 [ 309.662464] i915_gem_shrink_all+0x33/0x40 [i915] [ 309.662484] i915_drop_caches_set+0x141/0x150 [i915] [ 309.662489] simple_attr_write+0xc7/0xe0 [ 309.662494] full_proxy_write+0x4f/0x70 [ 309.662498] __vfs_write+0x23/0x120 [ 309.662503] ? rcu_read_lock_sched_held+0x75/0x80 [ 309.662507] ? rcu_sync_lockdep_assert+0x2a/0x50 [ 309.662512] ? __sb_start_write+0x102/0x210 [ 309.662516] ? vfs_write+0x17d/0x1f0 [ 309.662520] vfs_write+0xc6/0x1f0 [ 309.662524] ? trace_hardirqs_on_caller+0xe7/0x200 [ 309.662529] SyS_write+0x44/0xb0 [ 309.662533] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 309.662537] RIP: 0033:0x7f507eac24a0 [ 309.662541] RSP: 002b:00007fffda8720e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 309.662548] RAX: ffffffffffffffda RBX: ffffffff81482bd3 RCX: 00007f507eac24a0 [ 309.662552] RDX: 0000000000000005 RSI: 00007fffda8720f0 RDI: 0000000000000005 [ 309.662557] RBP: ffffc9000048bf88 R08: 0000000000000000 R09: 000000000000002c [ 309.662561] R10: 0000000000000014 R11: 0000000000000246 R12: 00007fffda872230 [ 309.662566] R13: 00007fffda872228 R14: 0000000000000201 R15: 00007fffda8720f0 [ 309.662572] ? __this_cpu_preempt_check+0x13/0x20 Fixes: 0eafec6d ("drm/i915: Enable lockless lookup of request tracking via RCU") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100192Signed-off-by:Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit bd784b7c) Signed-off-by:
-
Andrzej Hajda authored
DSI forwards te-gpios interrupts to display controller, but if display controller works in HW-TRIGGER mode this interrupt is not necessary. Making te-gpios property optional allows to avoid generating spare interrupts. And also if panel device node of command mode panel device doesn't provide te-gpios property then the panel driver failed to probe. This was a critial issue. With this patch we can not only get rid of 60 interrupt callbacks per second but also fix the critial issues. Signed-off-by:
Andrzej Hajda <a.hajda@samsung.com> Signed-off-by:
Inki Dae <inki.dae@samsung.com>
-
Krzysztof Kozlowski authored
Printing raw kernel pointers might reveal information which sometimes we try to hide (e.g. with Kernel Address Space Layout Randomization). Use the "%pK" format so these pointers will be hidden for unprivileged users. Signed-off-by:
Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
-
Andrzej Hajda authored
The patch fixes copy/paste bug introduced during code refactoring. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Fixes: b93c2e8b ("drm/exynos/decon5433: configure sysreg in case of hardware trigger")Fixes: Signed-off-by:
-
Andrzej Hajda authored
VBLANK interrupt should be signalled as soon as scanout ends, front porch is the best moment. Signed-off-by:
-
Andrzej Hajda authored
DECON in case of video mode generates interrupt by default at start of vertical back porch. As this interrupt is used to generate VBLANK events more optimal point is start of vertical front porch. Signed-off-by: -
Andrzej Hajda authored
Current implementation of event handling assumes that vblank interrupt is always called at the right time. It is not true, it can be delayed due to various reasons. As a result different races can happen. The patch fixes the issue by using hardware frame counter present in DECON to serialize vblank and commit completion events. Signed-off-by:
-
Andrzej Hajda authored
CRTC event is currently send with next vblank, or instantly in case crtc is being disabled. This approach usually works, but in corner cases it can result in premature event generation. Only device driver is able to verify if the event can be sent. This patch is a first step in that direction - it moves event handling to the drivers. Signed-off-by:
-
Krzysztof Kozlowski authored
Support for Exynos4415 is going away because there are no internal nor external users. Since commit 46dcf0ff ("ARM: dts: exynos: Remove exynos4415.dtsi"), the platform cannot be instantiated so remove also the drivers. Signed-off-by:
Kukjin Kim <kgene@kernel.org> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
-
Dan Carpenter authored
"&" was obviously intended instead of "|". The original condition is always true. Fixes: b93c2e8b ("drm/exynos/decon5433: configure sysreg in case of hardware trigger") Signed-off-by:
-
- 20 Mar, 2017 6 commits
-
-
https://github.com/01org/gvt-linuxJani Nikula authored
gvt-fixes-2017-03-17 - force_nonpriv reg handling in cmd parser (Yan) - gvt error message cleanup (Tina) - i915_wait_request fix from Chris - KVM srcu warning fix (Changbin) - ensure shadow ctx pinned (Chuanxiao) - critical gvt scheduler interval time fix (Zhenyu) - etc. Signed-off-by: -
Linus Torvalds authored
-
Linus Torvalds authored
This BUG_ON() triggered for me once at shutdown, and I don't see a reason for the check. The code correctly checks whether the swap slot cache is usable or not, so an uninitialized swap slot cache is not actually problematic afaik. I've temporarily just switched the BUG_ON() to a WARN_ON_ONCE(), since I'm not sure why that seemingly pointless check was there. I suspect the real fix is to just remove it entirely, but for now we'll warn about it but not bring the machine down. Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by:Linus Torvalds <torvalds@linux-foundation.org>
-
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull more powerpc fixes from Michael Ellerman: "A couple of minor powerpc fixes for 4.11: - wire up statx() syscall - don't print a warning on memory hotplug when HPT resizing isn't available Thanks to: David Gibson, Chandan Rajendra" * tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries: Don't give a warning when HPT resizing isn't available powerpc: Wire up statx() syscall -
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc fixes from Helge Deller: - Mikulas Patocka added support for R_PARISC_SECREL32 relocations in modules with CONFIG_MODVERSIONS. - Dave Anglin optimized the cache flushing for vmap ranges. - Arvind Yadav provided a fix for a potential NULL pointer dereference in the parisc perf code (and some code cleanups). - I wired up the new statx system call, fixed some compiler warnings with the access_ok() macro and fixed shutdown code to really halt a system at shutdown instead of crashing & rebooting. * 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fix system shutdown halt parisc: perf: Fix potential NULL pointer dereference parisc: Avoid compiler warnings with access_ok() parisc: Wire up statx system call parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range parisc: support R_PARISC_SECREL32 relocation in modules
-
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds authored
Pull SCSI target fixes from Nicholas Bellinger: "The bulk of the changes are in qla2xxx target driver code to address various issues found during Cavium/QLogic's internal testing (stable CC's included), along with a few other stability and smaller miscellaneous improvements. There are also a couple of different patch sets from Mike Christie, which have been a result of his work to use target-core ALUA logic together with tcm-user backend driver. Finally, a patch to address some long standing issues with pass-through SCSI export of TYPE_TAPE + TYPE_MEDIUM_CHANGER devices, which will make folks using physical (or virtual) magnetic tape happy" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits) qla2xxx: Update driver version to 9.00.00.00-k qla2xxx: Fix delayed response to command for loop mode/direct connect. qla2xxx: Change scsi host lookup method. qla2xxx: Add DebugFS node to display Port Database qla2xxx: Use IOCB interface to submit non-critical MBX. qla2xxx: Add async new target notification qla2xxx: Export DIF stats via debugfs qla2xxx: Improve T10-DIF/PI handling in driver. qla2xxx: Allow relogin to proceed if remote login did not finish qla2xxx: Fix sess_lock & hardware_lock lock order problem. qla2xxx: Fix inadequate lock protection for ABTS. qla2xxx: Fix request queue corruption. qla2xxx: Fix memory leak for abts processing qla2xxx: Allow vref count to timeout on vport delete. tcmu: Convert cmd_time_out into backend device attribute tcmu: make cmd timeout configurable tcmu: add helper to check if dev was configured target: fix race during implicit transition work flushes target: allow userspace to set state to transitioning target: fix ALUA transition timeout handling ...
-
- 19 Mar, 2017 15 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull device-dax fixes from Dan Williams: "The device-dax driver was not being careful to handle falling back to smaller fault-granularity sizes. The driver already fails fault attempts that are smaller than the device's alignment, but it also needs to handle the cases where a larger page mapping could be established. For simplicity of the immediate fix the implementation just signals VM_FAULT_FALLBACK until fault-size == device-alignment. One fix is for -stable to address pmd-to-pte fallback from the original implementation, another fix is for the new (introduced in 4.11-rc1) pud-to-pmd regression, and a typo fix comes along for the ride. These have received a build success notification from the kbuild robot" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: device-dax: fix debug output typo device-dax: fix pud fault fallback handling device-dax: fix pmd/pte fault fallback handling
-
Himanshu Madhani authored
Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> signed-off-by:
Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org>
-
Quinn Tran authored
Current driver wait for FW to be in the ready state before processing in-coming commands. For Arbitrated Loop or Point-to- Point (not switch), FW Ready state can take a while. FW will transition to ready state after all Nports have been logged in. In the mean time, certain initiators have completed the login and starts IO. Driver needs to start processing all queues if FW is already started. Signed-off-by:
Quinn Tran <quinn.tran@cavium.com> Signed-off-by:
-
Quinn Tran authored
For target mode, when new scsi command arrive, driver first performs a look up of the SCSI Host. The current look up method is based on the ALPA portion of the NPort ID. For Cisco switch, the ALPA can not be used as the index. Instead, the new search method is based on the full value of the Nport_ID via btree lib. Signed-off-by:
-
Himanshu Madhani authored
Signed-off-by:
-
Quinn Tran authored
The Mailbox interface is currently over subscribed. We like to reserve the Mailbox interface for the chip managment and link initialization. Any non essential Mailbox command will be routed through the IOCB interface. The IOCB interface is able to absorb more commands. Following commands are being routed through IOCB interface - Get ID List (007Ch) - Get Port DB (0064h) - Get Link Priv Stats (006Dh) Signed-off-by:
-
Quinn Tran authored
Signed-off-by:
-
Anil Gurumurthy authored
Signed-off-by:
Anil Gurumurthy <anil.gurumurthy@cavium.com> Signed-off-by:
-
Quinn Tran authored
Add routines to support T10 DIF tag. Signed-off-by:
-
Quinn Tran authored
If the remote port have started the login process, then the PLOGI and PRLI should be back to back. Driver will allow the remote port to complete the process. For the case where the remote port decide to back off from sending PRLI, this local port sets an expiration timer for the PRLI. Once the expiration time passes, the relogin retry logic is allowed to go through and perform login with the remote port. Signed-off-by:
Quinn Tran <quinn.tran@qlogic.com> Signed-off-by:
-
Quinn Tran authored
The main lock that needs to be held for CMD or TMR submission to upper layer is the sess_lock. The sess_lock is used to serialize cmd submission and session deletion. The addition of hardware_lock being held is not necessary. This patch removes hardware_lock dependency from CMD/TMR submission. Use hardware_lock only for error response in this case. Path1 CPU0 CPU1 ---- ---- lock(&(&ha->tgt.sess_lock)->rlock); lock(&(&ha->hardware_lock)->rlock); lock(&(&ha->tgt.sess_lock)->rlock); lock(&(&ha->hardware_lock)->rlock); Path2/deadlock *** DEADLOCK *** Call Trace: dump_stack+0x85/0xc2 print_circular_bug+0x1e3/0x250 __lock_acquire+0x1425/0x1620 lock_acquire+0xbf/0x210 _raw_spin_lock_irqsave+0x53/0x70 qlt_sess_work_fn+0x21d/0x480 [qla2xxx] process_one_work+0x1f4/0x6e0 Cc: <stable@vger.kernel.org> Cc: Bart Van Assche <Bart.VanAssche@sandisk.com> Reported-by:Bart Van Assche <Bart.VanAssche@sandisk.com> Signed-off-by:
-
Quinn Tran authored
Normally, ABTS is sent to Target Core as Task MGMT command. In the case of error, qla2xxx needs to send response, hardware_lock is required to prevent request queue corruption. Cc: <stable@vger.kernel.org> Signed-off-by:
-
Quinn Tran authored
When FW notify driver or driver detects low FW resource, driver tries to send out Busy SCSI Status to tell Initiator side to back off. During the send process, the lock was not held. Cc: <stable@vger.kernel.org> Signed-off-by:
-
Quinn Tran authored
Cc: <stable@vger.kernel.org> Signed-off-by:
-
Joe Carnuccio authored
Cc: <stable@vger.kernel.org> Signed-off-by:
Joe Carnuccio <joe.carnuccio@cavium.com> Signed-off-by:
-
- 18 Mar, 2017 6 commits
-
-
Nicholas Bellinger authored
Instead of putting cmd_time_out under ../target/core/user_0/foo/control, which has historically been used by parameters needed for initial backend device configuration, go ahead and move cmd_time_out into a backend device attribute. In order to do this, tcmu_module_init() has been updated to create a local struct configfs_attribute **tcmu_attrs, that is based upon the existing passthrough_attrib_attrs along with the new cmd_time_out attribute. Once **tcm_attrs has been setup, go ahead and point it at tcmu_ops->tb_dev_attrib_attrs so it's picked up by target-core. Also following MNC's previous change, ->cmd_time_out is stored in milliseconds but exposed via configfs in seconds. Also, note this patch restricts the modification of ->cmd_time_out to before + after the TCMU device has been configured, but not while it has active fabric exports. Cc: Mike Christie <mchristi@redhat.com> Signed-off-by: -
Mike Christie authored
A single daemon could implement multiple types of devices using multuple types of real devices that may not support restarting from crashes and/or handling tcmu timeouts. This makes the cmd timeout configurable, so handlers that do not support it can turn if off for now. Signed-off-by:
Mike Christie <mchristi@redhat.com> Signed-off-by:
-
Mike Christie authored
This adds a helper to check if the dev was configured. It will be used in the next patch to prevent updates to some config settings after the device has been setup. Signed-off-by:
-
git://github.com/openrisc/linuxLinus Torvalds authored
Pull OpenRISC fixes from Stafford Horne: "OpenRISC fixes for build issues that were exposed by kbuild robots after 4.11 merge. All from allmodconfig builds. This includes: - bug in the handling of 8-byte get_user() calls - module build failure due to multile missing symbol exports" * tag 'openrisc-for-linus' of git://github.com/openrisc/linux: openrisc: Export symbols needed by modules openrisc: fix issue handling 8 byte get_user calls openrisc: xchg: fix `computed is not used` warning
-
Mike Christie authored
This fixes the following races: 1. core_alua_do_transition_tg_pt could have read tg_pt_gp_alua_access_state and gone into this if chunk: if (!explicit && atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) == ALUA_ACCESS_STATE_TRANSITION) { and then core_alua_do_transition_tg_pt_work could update the state. core_alua_do_transition_tg_pt would then only set tg_pt_gp_alua_pending_state and the tg_pt_gp_alua_access_state would not get updated with the second calls state. 2. core_alua_do_transition_tg_pt could be setting tg_pt_gp_transition_complete while the tg_pt_gp_transition_work is already completing. core_alua_do_transition_tg_pt then waits on the completion that will never be called. To handle these issues, we just call flush_work which will return when core_alua_do_transition_tg_pt_work has completed so there is no need to do the complete/wait. And, if core_alua_do_transition_tg_pt_work was running, instead of trying to sneak in the state change, we just schedule up another core_alua_do_transition_tg_pt_work call. Note that this does not handle a possible race where there are multiple threads call core_alua_do_transition_tg_pt at the same time. I think we need a mutex in target_tg_pt_gp_alua_access_state_store. Signed-off-by: -
Mike Christie authored
Userspace target_core_user handlers like tcmu-runner may want to set the ALUA state to transitioning while it does implicit transitions. This patch allows that state when set from configfs. Signed-off-by:
-
