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35c6367f51
Due to a change in requirements that disallows tasklet_disable() being
called from atomic context, rearrange the selftest to avoid doing so.
<3> [324.942939] BUG: sleeping function called from invalid context at kernel/softirq.c:888
<3> [324.942952] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5601, name: i915_selftest
<4> [324.942960] 1 lock held by i915_selftest/5601:
<4> [324.942963] #0: ffff888101d19240 (&dev->mutex){....}-{3:3}, at: device_driver_attach+0x18/0x50
<3> [324.942987] Preemption disabled at:
<3> [324.942990] [<ffffffffa026fbd2>] live_hold_reset.part.65+0xc2/0x2f0 [i915]
<4> [324.943255] CPU: 0 PID: 5601 Comm: i915_selftest Tainted: G U 5.13.0-rc5-CI-CI_DRM_10197+ #1
<4> [324.943259] Hardware name: Intel Corp. Geminilake/GLK RVP2 LP4SD (07), BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017
<4> [324.943263] Call Trace:
<4> [324.943267] dump_stack+0x7f/0xad
<4> [324.943276] ___might_sleep.cold.123+0xf2/0x106
<4> [324.943286] tasklet_unlock_wait+0x2e/0xb0
<4> [324.943291] ? ktime_get_raw+0x81/0x120
<4> [324.943305] live_hold_reset.part.65+0x1ab/0x2f0 [i915]
<4> [324.943500] __i915_subtests.cold.7+0x42/0x92 [i915]
<4> [324.943723] ? __i915_live_teardown+0x50/0x50 [i915]
<4> [324.943922] ? __intel_gt_live_setup+0x30/0x30 [i915]
Fixes: da04474740 ("tasklets: Replace spin wait in tasklet_unlock_wait()")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210611060838.647973-1-thomas.hellstrom@linux.intel.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.