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This is handled properly by both DPM and PP externally.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Adds support for PM locks around access to registers that might
have race conditions on PG transistions.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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UVD/VCE
This adds a mutex lock for both DPM/PP around the changes in
power gating state so that userspace can poll registers without
a race condition on power state.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Now that the implementation is complete.
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This patch adds DPM running checking back, because the DPM issue is
fixed.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This patch adds the deep sleep initialization at DPM, it needs send a
message to SMC to enable this feature before enable voltage controller.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It's able to enable iceland powerplay manually via the module
parameter. The default state is disabled.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This patch introduces the iceland HW manager of powerplay which
includes HW manager, clockpowergating, thermal, and powertune.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The system management unit (SMU) is a subcomponent of the northbridge
that is responsible for a variety of system and power management tasks
during boot and runtime for GPU. In powerplay, it will be used on
firmware loading and power task management. This patch adds SMU
mananger for iceland.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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v2: cleanup headers, add copyright
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Saves us quite a bunch of code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Saves us quite a bunch of code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Saves us some code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Warn when we try to get the address and the BO isn't locked or reserved.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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They can't move anyway, but just to be clean here.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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We often allocate, pin and map things at the same time in the kernel.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check gpu status first, if MC/VMC/DISPLAY hang, directly triger full reset.
If engine hangs, then triger engine soft reset, if soft reset fails, will
fallback to full reset.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It will be used before soft_reset to do some preparing work for reset.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It is used to identify if the ip block is hang.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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drm_connector_register_all requires a few too many locks because our
connector_list locking is busted. Add another FIXME+hack to work
around this. This should address the below lockdep splat:
======================================================
[ INFO: possible circular locking dependency detected ]
4.7.0-rc5+ #524 Tainted: G O
-------------------------------------------------------
kworker/u8:0/6 is trying to acquire lock:
(&dev->mode_config.mutex){+.+.+.}, at: [<ffffffff815afde0>] drm_modeset_lock_all+0x40/0x120
but task is already holding lock:
((fb_notifier_list).rwsem){++++.+}, at: [<ffffffff810ac195>] __blocking_notifier_call_chain+0x35/0x70
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 ((fb_notifier_list).rwsem){++++.+}:
[<ffffffff810df611>] lock_acquire+0xb1/0x200
[<ffffffff819a55b4>] down_write+0x44/0x80
[<ffffffff810abf91>] blocking_notifier_chain_register+0x21/0xb0
[<ffffffff814c7448>] fb_register_client+0x18/0x20
[<ffffffff814c6c86>] backlight_device_register+0x136/0x260
[<ffffffffa0127eb2>] intel_backlight_device_register+0xa2/0x160 [i915]
[<ffffffffa00f46be>] intel_connector_register+0xe/0x10 [i915]
[<ffffffffa0112bfb>] intel_dp_connector_register+0x1b/0x80 [i915]
[<ffffffff8159dfea>] drm_connector_register+0x4a/0x80
[<ffffffff8159fe44>] drm_connector_register_all+0x64/0xf0
[<ffffffff815a2a64>] drm_modeset_register_all+0x174/0x1c0
[<ffffffff81599b72>] drm_dev_register+0xc2/0xd0
[<ffffffffa00621d7>] i915_driver_load+0x1547/0x2200 [i915]
[<ffffffffa006d80f>] i915_pci_probe+0x4f/0x70 [i915]
[<ffffffff814a2135>] local_pci_probe+0x45/0xa0
[<ffffffff814a349b>] pci_device_probe+0xdb/0x130
[<ffffffff815c07e3>] driver_probe_device+0x223/0x440
[<ffffffff815c0ad5>] __driver_attach+0xd5/0x100
[<ffffffff815be386>] bus_for_each_dev+0x66/0xa0
[<ffffffff815c002e>] driver_attach+0x1e/0x20
[<ffffffff815bf9be>] bus_add_driver+0x1ee/0x280
[<ffffffff815c1810>] driver_register+0x60/0xe0
[<ffffffff814a1a10>] __pci_register_driver+0x60/0x70
[<ffffffffa01a905b>] i915_init+0x5b/0x62 [i915]
[<ffffffff8100042d>] do_one_initcall+0x3d/0x150
[<ffffffff811a935b>] do_init_module+0x5f/0x1d9
[<ffffffff81124416>] load_module+0x20e6/0x27e0
[<ffffffff81124d63>] SYSC_finit_module+0xc3/0xf0
[<ffffffff81124dae>] SyS_finit_module+0xe/0x10
[<ffffffff819a83a9>] entry_SYSCALL_64_fastpath+0x1c/0xac
-> #0 (&dev->mode_config.mutex){+.+.+.}:
[<ffffffff810df0ac>] __lock_acquire+0x10fc/0x1260
[<ffffffff810df611>] lock_acquire+0xb1/0x200
[<ffffffff819a3097>] mutex_lock_nested+0x67/0x3c0
[<ffffffff815afde0>] drm_modeset_lock_all+0x40/0x120
[<ffffffff8158f79b>] drm_fb_helper_restore_fbdev_mode_unlocked+0x2b/0x80
[<ffffffff8158f81d>] drm_fb_helper_set_par+0x2d/0x50
[<ffffffffa0105f7a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[<ffffffff814c13c6>] fbcon_init+0x586/0x610
[<ffffffff8154d16a>] visual_init+0xca/0x130
[<ffffffff8154e611>] do_bind_con_driver+0x1c1/0x3a0
[<ffffffff8154eaf6>] do_take_over_console+0x116/0x180
[<ffffffff814bd3a7>] do_fbcon_takeover+0x57/0xb0
[<ffffffff814c1e48>] fbcon_event_notify+0x658/0x750
[<ffffffff810abcae>] notifier_call_chain+0x3e/0xb0
[<ffffffff810ac1ad>] __blocking_notifier_call_chain+0x4d/0x70
[<ffffffff810ac1e6>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff814c748b>] fb_notifier_call_chain+0x1b/0x20
[<ffffffff814c86b1>] register_framebuffer+0x251/0x330
[<ffffffff8158fa9f>] drm_fb_helper_initial_config+0x25f/0x3f0
[<ffffffffa0106b48>] intel_fbdev_initial_config+0x18/0x30 [i915]
[<ffffffff810adfd8>] async_run_entry_fn+0x48/0x150
[<ffffffff810a3947>] process_one_work+0x1e7/0x750
[<ffffffff810a3efb>] worker_thread+0x4b/0x4f0
[<ffffffff810aad4f>] kthread+0xef/0x110
[<ffffffff819a85ef>] ret_from_fork+0x1f/0x40
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((fb_notifier_list).rwsem);
lock(&dev->mode_config.mutex);
lock((fb_notifier_list).rwsem);
lock(&dev->mode_config.mutex);
*** DEADLOCK ***
6 locks held by kworker/u8:0/6:
#0: ("events_unbound"){.+.+.+}, at: [<ffffffff810a38c9>] process_one_work+0x169/0x750
#1: ((&entry->work)){+.+.+.}, at: [<ffffffff810a38c9>] process_one_work+0x169/0x750
#2: (registration_lock){+.+.+.}, at: [<ffffffff814c8487>] register_framebuffer+0x27/0x330
#3: (console_lock){+.+.+.}, at: [<ffffffff814c86ce>] register_framebuffer+0x26e/0x330
#4: (&fb_info->lock){+.+.+.}, at: [<ffffffff814c78dd>] lock_fb_info+0x1d/0x40
#5: ((fb_notifier_list).rwsem){++++.+}, at: [<ffffffff810ac195>] __blocking_notifier_call_chain+0x35/0x70
stack backtrace:
CPU: 2 PID: 6 Comm: kworker/u8:0 Tainted: G O 4.7.0-rc5+ #524
Hardware name: Intel Corp. Broxton P/NOTEBOOK, BIOS APLKRVPA.X64.0138.B33.1606250842 06/25/2016
Workqueue: events_unbound async_run_entry_fn
0000000000000000 ffff8800758577f0 ffffffff814507a5 ffffffff828b9900
ffffffff828b9900 ffff880075857830 ffffffff810dc6fa ffff880075857880
ffff88007584d688 0000000000000005 0000000000000006 ffff88007584d6b0
Call Trace:
[<ffffffff814507a5>] dump_stack+0x67/0x92
[<ffffffff810dc6fa>] print_circular_bug+0x1aa/0x200
[<ffffffff810df0ac>] __lock_acquire+0x10fc/0x1260
[<ffffffff810df611>] lock_acquire+0xb1/0x200
[<ffffffff815afde0>] ? drm_modeset_lock_all+0x40/0x120
[<ffffffff815afde0>] ? drm_modeset_lock_all+0x40/0x120
[<ffffffff819a3097>] mutex_lock_nested+0x67/0x3c0
[<ffffffff815afde0>] ? drm_modeset_lock_all+0x40/0x120
[<ffffffff810fa85f>] ? rcu_read_lock_sched_held+0x7f/0x90
[<ffffffff81208218>] ? kmem_cache_alloc_trace+0x248/0x2b0
[<ffffffff815afdc5>] ? drm_modeset_lock_all+0x25/0x120
[<ffffffff815afde0>] drm_modeset_lock_all+0x40/0x120
[<ffffffff8158f79b>] drm_fb_helper_restore_fbdev_mode_unlocked+0x2b/0x80
[<ffffffff8158f81d>] drm_fb_helper_set_par+0x2d/0x50
[<ffffffffa0105f7a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[<ffffffff814c13c6>] fbcon_init+0x586/0x610
[<ffffffff8154d16a>] visual_init+0xca/0x130
[<ffffffff8154e611>] do_bind_con_driver+0x1c1/0x3a0
[<ffffffff8154eaf6>] do_take_over_console+0x116/0x180
[<ffffffff814bd3a7>] do_fbcon_takeover+0x57/0xb0
[<ffffffff814c1e48>] fbcon_event_notify+0x658/0x750
[<ffffffff810abcae>] notifier_call_chain+0x3e/0xb0
[<ffffffff810ac1ad>] __blocking_notifier_call_chain+0x4d/0x70
[<ffffffff810ac1e6>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff814c748b>] fb_notifier_call_chain+0x1b/0x20
[<ffffffff814c86b1>] register_framebuffer+0x251/0x330
[<ffffffff815b7e8d>] ? vga_switcheroo_client_fb_set+0x5d/0x70
[<ffffffff8158fa9f>] drm_fb_helper_initial_config+0x25f/0x3f0
[<ffffffffa0106b48>] intel_fbdev_initial_config+0x18/0x30 [i915]
[<ffffffff810adfd8>] async_run_entry_fn+0x48/0x150
[<ffffffff810a3947>] process_one_work+0x1e7/0x750
[<ffffffff810a38c9>] ? process_one_work+0x169/0x750
[<ffffffff810a3efb>] worker_thread+0x4b/0x4f0
[<ffffffff810a3eb0>] ? process_one_work+0x750/0x750
[<ffffffff810aad4f>] kthread+0xef/0x110
[<ffffffff819a85ef>] ret_from_fork+0x1f/0x40
[<ffffffff810aac60>] ? kthread_stop+0x2e0/0x2e0
v2: Rebase onto the right branch (hand-editing patches ftw) and add more
reporters.
Reported-by: Imre Deak <imre.deak@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Jiri Kosina <jikos@kernel.org>
Cc: Jiri Kosina <jikos@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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The conversion of the rcar-du driver from the I2C slave encoder to the
DRM bridge API left the HDMI encoder's bridge pointer NULL, preventing
the bridge from being handled automatically by the DRM core. Fix it.
Fixes: 1d926114d8f4 ("drm: rcar-du: Remove i2c slave encoder interface for hdmi encoder")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pull more block fixes from Jens Axboe:
"As mentioned in the pull the other day, a few more fixes for this
round, all related to the bio op changes in this series.
Two fixes, and then a cleanup, renaming bio->bi_rw to bio->bi_opf. I
wanted to do that change right after or right before -rc1, so that
risk of conflict was reduced. I just rebased the series on top of
current master, and no new ->bi_rw usage has snuck in"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: rename bio bi_rw to bi_opf
target: iblock_execute_sync_cache() should use bio_set_op_attrs()
mm: make __swap_writepage() use bio_set_op_attrs()
block/mm: make bdev_ops->rw_page() take a bool for read/write
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Pull drm zpos property support from Dave Airlie:
"This tree was waiting on some media stuff I hadn't had time to get a
stable branchpoint off, so I just waited until it was all in your tree
first.
It's been around a bit on the list and shouldn't affect anything
outside adding the generic API and moving some ARM drivers to using
it"
* tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux:
drm: rcar: use generic code for managing zpos plane property
drm/exynos: use generic code for managing zpos plane property
drm: sti: use generic zpos for plane
drm: add generic zpos property
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Since commit 63a4cc24867d, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.
No intended functional changes in this commit.
Signed-off-by: Jens Axboe <axboe@fb.com>
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The original commit missed this function, it needs to mark it a
write flush.
Cc: Mike Christie <mchristi@redhat.com>
Fixes: e742fc32fcb4 ("target: use bio op accessors")
Signed-off-by: Jens Axboe <axboe@fb.com>
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Cleaner than manipulating bio->bi_rw flags directly.
Signed-off-by: Jens Axboe <axboe@fb.com>
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Commit abf545484d31 changed it from an 'rw' flags type to the
newer ops based interface, but now we're effectively leaking
some bdev internals to the rest of the kernel. Since we only
care about whether it's a read or a write at that level, just
pass in a bool 'is_write' parameter instead.
Then we can also move op_is_write() and friends back under
CONFIG_BLOCK protection.
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull documentation fixes from Jonathan Corbet:
"Three fixes for the docs build, including removing an annoying warning
on 'make help' if sphinx isn't present"
* tag 'doc-4.8-fixes' of git://git.lwn.net/linux:
DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1
Documenation: update cgroup's document path
Documentation/sphinx: do not warn about missing tools in 'make help'
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc
Pull binfmt_misc update from James Bottomley:
"This update is to allow architecture emulation containers to function
such that the emulation binary can be housed outside the container
itself. The container and fs parts both have acks from relevant
experts.
To use the new feature you have to add an F option to your binfmt_misc
configuration"
From the docs:
"The usual behaviour of binfmt_misc is to spawn the binary lazily when
the misc format file is invoked. However, this doesn't work very well
in the face of mount namespaces and changeroots, so the F mode opens
the binary as soon as the emulation is installed and uses the opened
image to spawn the emulator, meaning it is always available once
installed, regardless of how the environment changes"
* tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc:
binfmt_misc: add F option description to documentation
binfmt_misc: add persistent opened binary handler for containers
fs: add filp_clone_open API
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In most cases, EPERM is returned on immutable inode, and there're only a
few places returning EACCES. I noticed this when running LTP on
overlayfs, setxattr03 failed due to unexpected EACCES on immutable
inode.
So converting all EACCES to EPERM on immutable inode.
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
"Assorted cleanups and fixes.
In the "trivial API change" department - ->d_compare() losing 'parent'
argument"
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
cachefiles: Fix race between inactivating and culling a cache object
9p: use clone_fid()
9p: fix braino introduced in "9p: new helper - v9fs_parent_fid()"
vfs: make dentry_needs_remove_privs() internal
vfs: remove file_needs_remove_privs()
vfs: fix deadlock in file_remove_privs() on overlayfs
get rid of 'parent' argument of ->d_compare()
cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()
affs ->d_compare(): don't bother with ->d_inode
fold _d_rehash() and __d_rehash() together
fold dentry_rcuwalk_invalidate() into its only remaining caller
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git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs
Pull more xfs updates from Dave Chinner:
"This is the second part of the XFS updates for this merge cycle, and
contains the new reverse block mapping feature for XFS.
Reverse mapping allows us to track the owner of a specific block on
disk precisely. It is implemented as a set of btrees (one per
allocation group) that track the owners of allocated extents.
Effectively it is a "used space tree" that is updated when we allocate
or free extents. i.e. it is coherent with the free space btrees we
already maintain and never overlaps with them.
This reverse mapping infrastructure is the building block of several
upcoming features - reflink, copy-on-write data, dedupe, online
metadata and data scrubbing, highly accurate bad sector/data loss
reporting to users, and significantly improved reconstruction of
damaged and corrupted filesystems. There's a lot of new stuff coming
along in the next couple of cycles,a nd it all builds in the rmap
infrastructure.
As such, it's a huge chunk of new code with new on-disk format
features and internal infrastructure. It warns at mount time as an
experimental feature and that it may eat data (as we do with all new
on-disk features until they stabilise). We have not released
userspace suport for it yet - userspace support currently requires
download from Darrick's xfsprogs repo and build from source, so the
access to this feature is really developer/tester only at this point.
Initial userspace support will be released at the same time kernel
with this code in it is released.
The new rmap enabled code regresses 3 xfstests - all are ENOSPC
related corner cases, one of which Darrick posted a fix for a few
hours ago. The other two are fixed by infrastructure that is part of
the upcoming reflink patchset. This new ENOSPC infrastructure
requires a on-disk format tweak required to keep mount times in
check - we need to keep an on-disk count of allocated rmapbt blocks so
we don't have to scan the entire btrees at mount time to count them.
This is currently being tested and will be part of the fixes sent in
the next week or two so users will not be exposed to this change"
* tag 'xfs-rmap-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (52 commits)
xfs: move (and rename) the deferred bmap-free tracepoints
xfs: collapse single use static functions
xfs: remove unnecessary parentheses from log redo item recovery functions
xfs: remove the extents array from the rmap update done log item
xfs: in btree_lshift, only allocate temporary cursor when needed
xfs: remove unnecesary lshift/rshift key initialization
xfs: remove the get*keys and update_keys btree ops pointers
xfs: enable the rmap btree functionality
xfs: don't update rmapbt when fixing agfl
xfs: disable XFS_IOC_SWAPEXT when rmap btree is enabled
xfs: add rmap btree block detection to log recovery
xfs: add rmap btree geometry feature flag
xfs: propagate bmap updates to rmapbt
xfs: enable the xfs_defer mechanism to process rmaps to update
xfs: log rmap intent items
xfs: create rmap update intent log items
xfs: add rmap btree insert and delete helpers
xfs: convert unwritten status of reverse mappings
xfs: remove an extent from the rmap btree
xfs: add an extent to the rmap btree
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull qstr constification updates from Al Viro:
"Fairly self-contained bunch - surprising lot of places passes struct
qstr * as an argument when const struct qstr * would suffice; it
complicates analysis for no good reason.
I'd prefer to feed that separately from the assorted fixes (those are
in #for-linus and with somewhat trickier topology)"
* 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
qstr: constify instances in adfs
qstr: constify instances in lustre
qstr: constify instances in f2fs
qstr: constify instances in ext2
qstr: constify instances in vfat
qstr: constify instances in procfs
qstr: constify instances in fuse
qstr constify instances in fs/dcache.c
qstr: constify instances in nfs
qstr: constify instances in ocfs2
qstr: constify instances in autofs4
qstr: constify instances in hfs
qstr: constify instances in hfsplus
qstr: constify instances in logfs
qstr: constify dentry_init_security
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull mailcap fixlets from Mauro Carvalho Chehab:
"A small fixup for my and Shuah's entries in .mailcap.
Basically, those entries were with a syntax that makes
get_maintainer.pl to do the wrong thing"
* tag 'media/v4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
.mailmap: Correct entries for Mauro Carvalho Chehab and Shuah Khan
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Pull virtio/vhost updates from Michael Tsirkin:
- new vsock device support in host and guest
- platform IOMMU support in host and guest, including compatibility
quirks for legacy systems.
- misc fixes and cleanups.
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
VSOCK: Use kvfree()
vhost: split out vringh Kconfig
vhost: detect 32 bit integer wrap around
vhost: new device IOTLB API
vhost: drop vringh dependency
vhost: convert pre sorted vhost memory array to interval tree
vhost: introduce vhost memory accessors
VSOCK: Add Makefile and Kconfig
VSOCK: Introduce vhost_vsock.ko
VSOCK: Introduce virtio_transport.ko
VSOCK: Introduce virtio_vsock_common.ko
VSOCK: defer sock removal to transports
VSOCK: transport-specific vsock_transport functions
vhost: drop vringh dependency
vop: pull in vhost Kconfig
virtio: new feature to detect IOMMU device quirk
balloon: check the number of available pages in leak balloon
vhost: lockless enqueuing
vhost: simplify work flushing
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Pull more KVM updates from Paolo Bonzini:
- ARM bugfix and MSI injection support
- x86 nested virt tweak and OOPS fix
- Simplify pvclock code (vdso bits acked by Andy Lutomirski).
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
nvmx: mark ept single context invalidation as supported
nvmx: remove comment about missing nested vpid support
KVM: lapic: fix access preemption timer stuff even if kernel_irqchip=off
KVM: documentation: fix KVM_CAP_X2APIC_API information
x86: vdso: use __pvclock_read_cycles
pvclock: introduce seqcount-like API
arm64: KVM: Set cpsr before spsr on fault injection
KVM: arm: vgic-irqfd: Workaround changing kvm_set_routing_entry prototype
KVM: arm/arm64: Enable MSI routing
KVM: arm/arm64: Enable irqchip routing
KVM: Move kvm_setup_default/empty_irq_routing declaration in arch specific header
KVM: irqchip: Convey devid to kvm_set_msi
KVM: Add devid in kvm_kernel_irq_routing_entry
KVM: api: Pass the devid in the msi routing entry
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