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Instead of synchronously cancelling the timer and re-enabling it inside the reset callbacks, keep the timer enabled and let it die on its next wakeup if no longer required. This allows intel_engine_reset_breadcrumbs() to be used from an atomic (timer/softirq) context such as required for resetting an engine. It also allows us to react better to the user poking around debugfs for testing missed irqs. v2: Tighten the order of del_timer_sync as the fake_irq timer may trigger the hangcheck timer, and so we should cancel it first and then cancel the hangcheck (Mika) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180424142945.6787-1-chris@chris-wilson.co.uk
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.