* [Intel-gfx] [PATCH v7 1/3] drm/i915: Get active pending request for given context
2020-03-16 13:29 [Intel-gfx] [PATCH v7 0/3] drm/i915: Context aware user agnostic EU/Slice/Sub-slice control within kernel Ankit Navik
@ 2020-03-16 13:29 ` Ankit Navik
2020-03-16 13:43 ` Chris Wilson
2020-03-16 13:29 ` [Intel-gfx] [PATCH v7 2/3] drm/i915: set optimum eu/slice/sub-slice configuration based on load type Ankit Navik
` (2 subsequent siblings)
3 siblings, 1 reply; 6+ messages in thread
From: Ankit Navik @ 2020-03-16 13:29 UTC (permalink / raw)
To: intel-gfx; +Cc: ankit.p.navik
This patch gives us the active pending request count which is yet
to be submitted to the GPU.
V2:
* Change 64-bit to atomic for request count. (Tvrtko Ursulin)
V3:
* Remove mutex for request count.
* Rebase.
* Fixes hitting underflow for predictive request. (Tvrtko Ursulin)
V4:
* Rebase.
V5:
* Rebase.
V6:
* Rebase.
V7:
* Rebase.
* Add GEM_BUG_ON for req_cnt.
Cc: Vipin Anand <vipin.anand@intel.com>
Signed-off-by: Ankit Navik <ankit.p.navik@intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 1 +
drivers/gpu/drm/i915/gem/i915_gem_context_types.h | 5 +++++
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 ++
drivers/gpu/drm/i915/gt/intel_lrc.c | 9 +++++++++
4 files changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 026999b34abd..d0ff999429ff 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -879,6 +879,7 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags)
}
trace_i915_context_create(ctx);
+ atomic_set(&ctx->req_cnt, 0);
return ctx;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index 28760bd03265..a9ba13f8865e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -171,6 +171,11 @@ struct i915_gem_context {
*/
struct radix_tree_root handles_vma;
+ /** req_cnt: tracks the pending commands, based on which we decide to
+ * go for low/medium/high load configuration of the GPU.
+ */
+ atomic_t req_cnt;
+
/**
* @name: arbitrary name, used for user debug
*
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index d3f4f28e9468..f90c968f95cd 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -2565,6 +2565,8 @@ i915_gem_do_execbuffer(struct drm_device *dev,
if (batch->private)
intel_engine_pool_mark_active(batch->private, eb.request);
+ atomic_inc(&eb.gem_context->req_cnt);
+
trace_i915_request_queue(eb.request, eb.batch_flags);
err = eb_submit(&eb, batch);
err_request:
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 112531b29f59..ccfebebb0071 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2143,6 +2143,8 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
}
if (__i915_request_submit(rq)) {
+ struct i915_gem_context *ctx;
+
if (!merge) {
*port = execlists_schedule_in(last, port - execlists->pending);
port++;
@@ -2158,6 +2160,13 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
submit = true;
last = rq;
+
+ ctx = rcu_dereference_protected(
+ rq->context->gem_context, true);
+
+ GEM_BUG_ON(atomic_read(&ctx->req_cnt));
+ if (atomic_read(&ctx->req_cnt) > 0)
+ atomic_dec(&ctx->req_cnt);
}
}
--
2.7.4
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 6+ messages in thread* [Intel-gfx] [PATCH v7 2/3] drm/i915: set optimum eu/slice/sub-slice configuration based on load type
2020-03-16 13:29 [Intel-gfx] [PATCH v7 0/3] drm/i915: Context aware user agnostic EU/Slice/Sub-slice control within kernel Ankit Navik
2020-03-16 13:29 ` [Intel-gfx] [PATCH v7 1/3] drm/i915: Get active pending request for given context Ankit Navik
@ 2020-03-16 13:29 ` Ankit Navik
2020-03-16 13:29 ` [Intel-gfx] [PATCH v7 3/3] drm/i915: Predictive governor to control slice/subslice/eu Ankit Navik
2020-03-16 21:50 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for drm/i915: Context aware user agnostic EU/Slice/Sub-slice control within kernel (rev3) Patchwork
3 siblings, 0 replies; 6+ messages in thread
From: Ankit Navik @ 2020-03-16 13:29 UTC (permalink / raw)
To: intel-gfx; +Cc: ankit.p.navik
This patch will select optimum eu/slice/sub-slice configuration based on
type of load (low, medium, high) as input.
Based on our readings and experiments we have predefined set of optimum
configuration for each platform(CHT, KBL).
i915_gem_context_set_load_type will select optimum configuration from
pre-defined optimum configuration table(opt_config).
It also introduce flag update_render_config which can set by any governor.
v2:
* Move static optimum_config to device init time.
* Rename function to appropriate name, fix data types and patch ordering.
* Rename prev_load_type to pending_load_type. (Tvrtko Ursulin)
v3:
* Add safe guard check in i915_gem_context_set_load_type.
* Rename struct from optimum_config to i915_sseu_optimum_config to
avoid namespace clashes.
* Reduces memcpy for space efficient.
* Rebase.
* Improved commit message. (Tvrtko Ursulin)
v4:
* Move optimum config table to file scope. (Tvrtko Ursulin)
v5:
* Adds optimal table of slice/sub-slice/EU for Gen 9 GT1.
* Rebase.
v6:
* Rebase.
* Fix warnings.
v7:
* Fix return conditions.
* Remove i915_gem_context_set_load_type and move logic to
__execlists_update_reg_state. (Tvrtko Ursulin)
Cc: Vipin Anand <vipin.anand@intel.com>
Signed-off-by: Ankit Navik <ankit.p.navik@intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 3 +
drivers/gpu/drm/i915/gem/i915_gem_context_types.h | 32 +++++++++++
drivers/gpu/drm/i915/gt/intel_context_sseu.c | 2 +
drivers/gpu/drm/i915/gt/intel_context_types.h | 2 +
drivers/gpu/drm/i915/gt/intel_lrc.c | 70 ++++++++++++++++++++++-
drivers/gpu/drm/i915/i915_drv.h | 5 ++
drivers/gpu/drm/i915/intel_device_info.c | 55 +++++++++++++++++-
7 files changed, 165 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index d0ff999429ff..3aad45b0ba5a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -880,6 +880,9 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags)
trace_i915_context_create(ctx);
atomic_set(&ctx->req_cnt, 0);
+ ctx->slice_cnt = hweight8(RUNTIME_INFO(i915)->sseu.slice_mask);
+ ctx->subslice_cnt = hweight8(RUNTIME_INFO(i915)->sseu.subslice_mask[0]);
+ ctx->eu_cnt = RUNTIME_INFO(i915)->sseu.eu_per_subslice;
return ctx;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index a9ba13f8865e..1af1acd73794 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -46,6 +46,19 @@ struct i915_gem_engines_iter {
const struct i915_gem_engines *engines;
};
+enum gem_load_type {
+ LOAD_TYPE_LOW,
+ LOAD_TYPE_MEDIUM,
+ LOAD_TYPE_HIGH,
+ LOAD_TYPE_LAST
+};
+
+struct i915_sseu_optimum_config {
+ u8 slice;
+ u8 subslice;
+ u8 eu;
+};
+
/**
* struct i915_gem_context - client state
*
@@ -155,6 +168,25 @@ struct i915_gem_context {
*/
atomic_t active_count;
+ /** slice_cnt: used to set the # of slices to be enabled. */
+ u8 slice_cnt;
+
+ /** subslice_cnt: used to set the # of subslices to be enabled. */
+ u8 subslice_cnt;
+
+ /** eu_cnt: used to set the # of eu to be enabled. */
+ u8 eu_cnt;
+
+ /** load_type: The designated load_type (high/medium/low) for a given
+ * number of pending commands in the command queue.
+ */
+ enum gem_load_type load_type;
+
+ /** pending_load_type: The earlier load type that the GPU was configured
+ * for (high/medium/low).
+ */
+ enum gem_load_type pending_load_type;
+
/**
* @hang_timestamp: The last time(s) this context caused a GPU hang
*/
diff --git a/drivers/gpu/drm/i915/gt/intel_context_sseu.c b/drivers/gpu/drm/i915/gt/intel_context_sseu.c
index 57a30956c922..4f51bfb9690c 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_context_sseu.c
@@ -84,6 +84,8 @@ intel_context_reconfigure_sseu(struct intel_context *ce,
if (ret)
return ret;
+ ce->user_sseu = true;
+
/* Nothing to do if unmodified. */
if (!memcmp(&ce->sseu, &sseu, sizeof(sseu)))
goto unlock;
diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h
index 0f3b68b95c56..fd5811110026 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_types.h
@@ -93,6 +93,8 @@ struct intel_context {
const struct intel_context_ops *ops;
+ bool user_sseu;
+
/** sseu: Control eu/slice partitioning */
struct intel_sseu sseu;
};
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index ccfebebb0071..7c5f05886278 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -177,6 +177,14 @@
/* Typical size of the average request (2 pipecontrols and a MI_BB) */
#define EXECLISTS_REQUEST_SIZE 64 /* bytes */
+/*
+ * Anything above threshold is considered as HIGH load, less is considered
+ * as LOW load and equal is considered as MEDIUM load.
+ *
+ * The threshold value of three active requests pending.
+ */
+#define PENDING_THRESHOLD_MEDIUM 3
+
struct virtual_engine {
struct intel_engine_cs base;
struct intel_context context;
@@ -3002,6 +3010,36 @@ static void execlists_context_unpin(struct intel_context *ce)
i915_gem_object_unpin_map(ce->state->obj);
}
+static u32
+get_context_rpcs_config(struct i915_gem_context *ctx)
+{
+ u32 rpcs = 0;
+ struct drm_i915_private *dev_priv = ctx->i915;
+
+ if (INTEL_GEN(dev_priv) < 8)
+ return 0;
+
+ if (RUNTIME_INFO(dev_priv)->sseu.has_slice_pg) {
+ rpcs |= GEN8_RPCS_S_CNT_ENABLE;
+ rpcs |= ctx->slice_cnt << GEN8_RPCS_S_CNT_SHIFT;
+ rpcs |= GEN8_RPCS_ENABLE;
+ }
+
+ if (RUNTIME_INFO(dev_priv)->sseu.has_subslice_pg) {
+ rpcs |= GEN8_RPCS_SS_CNT_ENABLE;
+ rpcs |= ctx->subslice_cnt << GEN8_RPCS_SS_CNT_SHIFT;
+ rpcs |= GEN8_RPCS_ENABLE;
+ }
+
+ if (RUNTIME_INFO(dev_priv)->sseu.has_eu_pg) {
+ rpcs |= ctx->eu_cnt << GEN8_RPCS_EU_MIN_SHIFT;
+ rpcs |= ctx->eu_cnt << GEN8_RPCS_EU_MAX_SHIFT;
+ rpcs |= GEN8_RPCS_ENABLE;
+ }
+
+ return rpcs;
+}
+
static void
__execlists_update_reg_state(const struct intel_context *ce,
const struct intel_engine_cs *engine,
@@ -3009,6 +3047,10 @@ __execlists_update_reg_state(const struct intel_context *ce,
{
struct intel_ring *ring = ce->ring;
u32 *regs = ce->lrc_reg_state;
+ const struct i915_sseu_optimum_config *cfg;
+ struct i915_gem_context *ctx;
+ enum gem_load_type load_type;
+ u32 req_pending;
GEM_BUG_ON(!intel_ring_offset_valid(ring, head));
GEM_BUG_ON(!intel_ring_offset_valid(ring, ring->tail));
@@ -3018,10 +3060,31 @@ __execlists_update_reg_state(const struct intel_context *ce,
regs[CTX_RING_TAIL] = ring->tail;
regs[CTX_RING_CTL] = RING_CTL_SIZE(ring->size) | RING_VALID;
+ GEM_BUG_ON(ce->engine->class != RENDER_CLASS);
+ ctx = rcu_dereference_protected(ce->gem_context, true);
+
+ req_pending = atomic_read(&ctx->req_cnt);
+
+ if (req_pending > PENDING_THRESHOLD_MEDIUM)
+ load_type = LOAD_TYPE_HIGH;
+ else if (req_pending == PENDING_THRESHOLD_MEDIUM)
+ load_type = LOAD_TYPE_MEDIUM;
+ else
+ load_type = LOAD_TYPE_LOW;
+
+ cfg = &ctx->i915->opt_config[load_type];
+
/* RPCS */
if (engine->class == RENDER_CLASS) {
- regs[CTX_R_PWR_CLK_STATE] =
- intel_sseu_make_rpcs(engine->i915, &ce->sseu);
+
+ if (!ctx || !ctx->i915->predictive_load_enable
+ || ce->user_sseu) {
+ regs[CTX_R_PWR_CLK_STATE] =
+ intel_sseu_make_rpcs(engine->i915, &ce->sseu);
+ } else {
+ regs[CTX_R_PWR_CLK_STATE] =
+ get_context_rpcs_config(ce->gem_context);
+ }
i915_oa_init_reg_state(ce, engine);
}
@@ -3046,6 +3109,9 @@ __execlists_context_pin(struct intel_context *ce,
ce->lrc_reg_state = vaddr + LRC_STATE_PN * PAGE_SIZE;
__execlists_update_reg_state(ce, engine, ce->ring->tail);
+ if (ce->gem_context->load_type != ce->gem_context->pending_load_type)
+ ce->gem_context->load_type = ce->gem_context->pending_load_type;
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1f5b9a584f71..304d95aa4974 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -926,6 +926,11 @@ struct drm_i915_private {
/* protects panel power sequencer state */
struct mutex pps_mutex;
+ /* optimal slice/subslice/EU configration state */
+ struct i915_sseu_optimum_config *opt_config;
+
+ bool predictive_load_enable;
+
unsigned int fsb_freq, mem_freq, is_ddr3;
unsigned int skl_preferred_vco_freq;
unsigned int max_cdclk_freq;
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index d7fe12734db8..53d966a9097e 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -899,6 +899,34 @@ void intel_device_info_subplatform_init(struct drm_i915_private *i915)
RUNTIME_INFO(i915)->platform_mask[pi] |= mask;
}
+/* static table of slice/subslice/EU for Cherryview */
+static const struct i915_sseu_optimum_config chv_config[LOAD_TYPE_LAST] = {
+ {1, 1, 4}, /* Low */
+ {1, 1, 6}, /* Medium */
+ {1, 2, 6} /* High */
+};
+
+/* static table of slice/subslice/EU for GLK GT1 */
+static const struct i915_sseu_optimum_config glk_gt1_config[LOAD_TYPE_LAST] = {
+ {1, 2, 2}, /* Low */
+ {1, 2, 3}, /* Medium */
+ {1, 2, 6} /* High */
+};
+
+/* static table of slice/subslice/EU for KBL GT2 */
+static const struct i915_sseu_optimum_config kbl_gt2_config[LOAD_TYPE_LAST] = {
+ {1, 3, 2}, /* Low */
+ {1, 3, 4}, /* Medium */
+ {1, 3, 8} /* High */
+};
+
+/* static table of slice/subslice/EU for KBL GT3 */
+static const struct i915_sseu_optimum_config kbl_gt3_config[LOAD_TYPE_LAST] = {
+ {2, 3, 4}, /* Low */
+ {2, 3, 6}, /* Medium */
+ {2, 3, 8} /* High */
+};
+
/**
* intel_device_info_runtime_init - initialize runtime info
* @dev_priv: the i915 device
@@ -1027,12 +1055,35 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
/* Initialize slice/subslice/EU info */
if (IS_HASWELL(dev_priv))
hsw_sseu_info_init(dev_priv);
- else if (IS_CHERRYVIEW(dev_priv))
+ else if (IS_CHERRYVIEW(dev_priv)) {
cherryview_sseu_info_init(dev_priv);
+ BUILD_BUG_ON(ARRAY_SIZE(chv_config) != LOAD_TYPE_LAST);
+ dev_priv->opt_config = chv_config;
+ }
else if (IS_BROADWELL(dev_priv))
bdw_sseu_info_init(dev_priv);
- else if (IS_GEN(dev_priv, 9))
+ else if (IS_GEN(dev_priv, 9)) {
gen9_sseu_info_init(dev_priv);
+
+ switch (info->gt) {
+ default: /* fall through */
+ case 1:
+ BUILD_BUG_ON(ARRAY_SIZE(glk_gt1_config) !=
+ LOAD_TYPE_LAST);
+ dev_priv->opt_config = glk_gt1_config;
+ break;
+ case 2:
+ BUILD_BUG_ON(ARRAY_SIZE(kbl_gt2_config) !=
+ LOAD_TYPE_LAST);
+ dev_priv->opt_config = kbl_gt2_config;
+ break;
+ case 3:
+ BUILD_BUG_ON(ARRAY_SIZE(kbl_gt3_config) !=
+ LOAD_TYPE_LAST);
+ dev_priv->opt_config = kbl_gt3_config;
+ break;
+ }
+ }
else if (IS_GEN(dev_priv, 10))
gen10_sseu_info_init(dev_priv);
else if (IS_GEN(dev_priv, 11))
--
2.7.4
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 6+ messages in thread* [Intel-gfx] [PATCH v7 3/3] drm/i915: Predictive governor to control slice/subslice/eu
2020-03-16 13:29 [Intel-gfx] [PATCH v7 0/3] drm/i915: Context aware user agnostic EU/Slice/Sub-slice control within kernel Ankit Navik
2020-03-16 13:29 ` [Intel-gfx] [PATCH v7 1/3] drm/i915: Get active pending request for given context Ankit Navik
2020-03-16 13:29 ` [Intel-gfx] [PATCH v7 2/3] drm/i915: set optimum eu/slice/sub-slice configuration based on load type Ankit Navik
@ 2020-03-16 13:29 ` Ankit Navik
2020-03-16 21:50 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for drm/i915: Context aware user agnostic EU/Slice/Sub-slice control within kernel (rev3) Patchwork
3 siblings, 0 replies; 6+ messages in thread
From: Ankit Navik @ 2020-03-16 13:29 UTC (permalink / raw)
To: intel-gfx; +Cc: ankit.p.navik
Load classification is used for predictive governor to control
eu/slice/subslice based on workloads.
sysfs is provided to enable/disable the feature
V2:
* Fix code style.
* Move predictive_load_timer into a drm_i915_private
structure.
* Make generic function to set optimum config. (Tvrtko Ursulin)
V3:
* Rebase.
* Fix race condition for predictive load set.
* Add slack to start hrtimer for more power efficient. (Tvrtko Ursulin)
V4:
* Fix data type and initialization of mutex to protect predictive load
state.
* Move predictive timer init to i915_gem_init_early. (Tvrtko Ursulin)
* Move debugfs to kernel parameter.
V5:
* Rebase.
* Remove mutex for pred_timer
V6:
* Rebase.
* Fix warnings.
V7:
* Drop timer and move logic to __execlists_update_reg_state. (Tvrtko Ursulin)
* Remove kernel boot param and make it to sysfs entry. (Jani Nikula)
Cc: Vipin Anand <vipin.anand@intel.com>
Signed-off-by: Ankit Navik <ankit.p.navik@intel.com>
---
drivers/gpu/drm/i915/i915_sysfs.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 45d32ef42787..5d76e4992c8d 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -433,12 +433,43 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
return ret ?: count;
}
+static ssize_t deu_enable_show(struct device *kdev, struct device_attribute *attr, char *buf)
+{
+ struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", i915->predictive_load_enable);
+}
+
+static ssize_t deu_enable_store(struct device *kdev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
+ ssize_t ret;
+ u32 val;
+
+ ret = kstrtou32(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ /* Check invalid values */
+ if (val != 0 && val != 1)
+ ret = -EINVAL;
+
+ i915->predictive_load_enable = val;
+
+ return count;
+}
+
static DEVICE_ATTR_RO(gt_act_freq_mhz);
static DEVICE_ATTR_RO(gt_cur_freq_mhz);
static DEVICE_ATTR_RW(gt_boost_freq_mhz);
static DEVICE_ATTR_RW(gt_max_freq_mhz);
static DEVICE_ATTR_RW(gt_min_freq_mhz);
+static DEVICE_ATTR_RW(deu_enable);
+
static DEVICE_ATTR_RO(vlv_rpe_freq_mhz);
static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf);
@@ -474,6 +505,7 @@ static const struct attribute * const gen6_attrs[] = {
&dev_attr_gt_RP0_freq_mhz.attr,
&dev_attr_gt_RP1_freq_mhz.attr,
&dev_attr_gt_RPn_freq_mhz.attr,
+ &dev_attr_deu_enable.attr,
NULL,
};
--
2.7.4
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