drm/i915/guc: Enable guc logging on guc log relay write

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Creating and opening the GuC log relay file enables and starts
the relay potentially before the caller is ready to consume logs.
Change the behavior so that relay starts only on an explicit call
to the write function (with a value of '1'). Other values flush
the log relay as before.

v2: Style changes and fix typos. Add guc_log_relay_stop()
function. (Daniele)

Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Robert M. Fosha <robert.m.fosha@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022163754.23870-1-robert.m.fosha@intel.com

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Robert M. Fosha 2019-10-22 09:37:52 -07:00 • committed by Daniele Ceraolo Spurio

parent 37c92dc303

commit 853ddb6993

3 changed files with 62 additions and 17 deletions

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57

drivers/gpu/drm/i915/gt/uc/intel_guc_log.c

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4

drivers/gpu/drm/i915/gt/uc/intel_guc_log.h

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22

drivers/gpu/drm/i915/i915_debugfs.c

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