@@ -338,7 +338,8 @@ static const struct i915_oa_format gen12_oa_formats[I915_OA_FORMAT_MAX] = {
* @single_context: Whether a single or all gpu contexts should be monitored
* @hold_preemption: Whether the preemption is disabled for the filtered
* context
- * @ctx_handle: A gem ctx handle for use with @single_context
+ * @n_ctx_handles: Length of @ctx_handles
+ * @ctx_handles: An array of gem context handles
* @metrics_set: An ID for an OA unit metric set advertised via sysfs
* @oa_format: An OA unit HW report format
* @oa_periodic: Whether to enable periodic OA unit sampling
@@ -356,9 +357,10 @@ static const struct i915_oa_format gen12_oa_formats[I915_OA_FORMAT_MAX] = {
struct perf_open_properties {
u32 sample_flags;
- u64 single_context:1;
u64 hold_preemption:1;
- u64 ctx_handle;
+
+ u32 n_ctx_handles;
+ u32 ctx_handles[I915_PERF_MAX_FILTER_CONTEXTS];
/* OA sampling state */
int metrics_set;
@@ -641,6 +643,19 @@ static int append_oa_sample(struct i915_perf_stream *stream,
return 0;
}
+static inline bool ctx_id_match(struct i915_perf_stream *stream,
+ u32 masked_ctx_id)
+{
+ int i;
+
+ for (i = 0; i < stream->n_ctxs; i++) {
+ if (masked_ctx_id == stream->ctx_ids[i])
+ return true;
+ }
+
+ return false;
+}
+
/**
* Copies all buffered OA reports into userspace read() buffer.
* @stream: An i915-perf stream opened for OA metrics
@@ -761,7 +776,7 @@ static int gen8_append_oa_reports(struct i915_perf_stream *stream,
continue;
}
- ctx_id = report32[2] & stream->specific_ctx_id_mask;
+ ctx_id = report32[2] & stream->ctx_id_mask;
/*
* Squash whatever is in the CTX_ID field if it's marked as
@@ -806,26 +821,32 @@ static int gen8_append_oa_reports(struct i915_perf_stream *stream,
* switches since it's not-uncommon for periodic samples to
* identify a switch before any 'context switch' report.
*/
- if (!stream->perf->exclusive_stream->ctx ||
- stream->specific_ctx_id == ctx_id ||
- stream->oa_buffer.last_ctx_id == stream->specific_ctx_id ||
- reason & OAREPORT_REASON_CTX_SWITCH) {
-
- /*
- * While filtering for a single context we avoid
- * leaking the IDs of other contexts.
- */
- if (stream->perf->exclusive_stream->ctx &&
- stream->specific_ctx_id != ctx_id) {
- report32[2] = INVALID_CTX_ID;
- }
-
+ if (!stream->perf->exclusive_stream->n_ctxs) {
ret = append_oa_sample(stream, buf, count, offset,
report);
if (ret)
break;
+ } else {
+ bool ctx_match = ctx_id_match(stream, ctx_id);
+
+ if (ctx_match ||
+ stream->oa_buffer.last_ctx_match ||
+ reason & OAREPORT_REASON_CTX_SWITCH) {
+
+ /*
+ * While filtering for a single context we avoid
+ * leaking the IDs of other contexts.
+ */
+ if (!ctx_match)
+ report32[2] = INVALID_CTX_ID;
+
+ ret = append_oa_sample(stream, buf, count, offset,
+ report);
+ if (ret)
+ break;
+ }
- stream->oa_buffer.last_ctx_id = ctx_id;
+ stream->oa_buffer.last_ctx_match = ctx_match;
}
/*
@@ -1228,138 +1249,163 @@ static int i915_oa_read(struct i915_perf_stream *stream,
return stream->perf->ops.read(stream, buf, count, offset);
}
-static struct intel_context *oa_pin_context(struct i915_perf_stream *stream)
+static u32 get_ctx_id_mask(struct intel_engine_cs *engine)
{
- struct i915_gem_engines_iter it;
- struct i915_gem_context *ctx = stream->ctx;
- struct intel_context *ce;
- int err;
+ switch (INTEL_GEN(engine->i915)) {
+ case 7:
+ /*
+ * On Haswell we don't do any post processing of the reports
+ * and don't need to use the mask.
+ */
+ return 0;
- for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
- if (ce->engine != stream->engine) /* first match! */
- continue;
+ case 8:
+ case 9:
+ case 10:
+ if (intel_engine_in_execlists_submission_mode(engine))
+ return (1U << GEN8_CTX_ID_WIDTH) - 1;
/*
- * As the ID is the gtt offset of the context's vma we
- * pin the vma to ensure the ID remains fixed.
+ * GuC uses the top bit to signal proxy submission, so ignore
+ * that bit.
*/
- err = intel_context_pin(ce);
- if (err == 0) {
- stream->pinned_ctx = ce;
- break;
- }
- }
- i915_gem_context_unlock_engines(ctx);
+ return (1U << (GEN8_CTX_ID_WIDTH - 1)) - 1;
+
+ case 11:
+ case 12:
+ /*
+ * 0x7ff is used by idle context.
+ */
+ BUILD_BUG_ON((GEN12_MAX_CONTEXT_HW_ID - 1) < NUM_CONTEXT_TAG);
+ return ((1U << GEN11_SW_CTX_ID_WIDTH) - 1) << (GEN11_SW_CTX_ID_SHIFT - 32);
- return stream->pinned_ctx;
+ default:
+ MISSING_CASE(INTEL_GEN(engine->i915));
+ return 0;
+ }
}
-/**
- * oa_get_render_ctx_id - determine and hold ctx hw id
- * @stream: An i915-perf stream opened for OA metrics
- *
- * Determine the render context hw id, and ensure it remains fixed for the
- * lifetime of the stream. This ensures that we don't have to worry about
- * updating the context ID in OACONTROL on the fly.
- *
- * Returns: zero on success or a negative error code
- */
-static int oa_get_render_ctx_id(struct i915_perf_stream *stream)
+static u32 get_ctx_id(struct intel_context *ce, int idx)
{
- struct intel_context *ce;
-
- ce = oa_pin_context(stream);
- if (IS_ERR(ce))
- return PTR_ERR(ce);
switch (INTEL_GEN(ce->engine->i915)) {
- case 7: {
- /*
- * On Haswell we don't do any post processing of the reports
- * and don't need to use the mask.
- */
- stream->specific_ctx_id = i915_ggtt_offset(ce->state);
- stream->specific_ctx_id_mask = 0;
- break;
- }
+ case 7:
+ return i915_ggtt_offset(ce->state);
case 8:
case 9:
case 10:
- if (intel_engine_in_execlists_submission_mode(ce->engine)) {
- stream->specific_ctx_id_mask =
- (1U << GEN8_CTX_ID_WIDTH) - 1;
- stream->specific_ctx_id = stream->specific_ctx_id_mask;
- } else {
- /*
- * When using GuC, the context descriptor we write in
- * i915 is read by GuC and rewritten before it's
- * actually written into the hardware. The LRCA is
- * what is put into the context id field of the
- * context descriptor by GuC. Because it's aligned to
- * a page, the lower 12bits are always at 0 and
- * dropped by GuC. They won't be part of the context
- * ID in the OA reports, so squash those lower bits.
- */
- stream->specific_ctx_id =
- lower_32_bits(ce->lrc_desc) >> 12;
+ if (intel_engine_in_execlists_submission_mode(ce->engine))
+ return (1U << GEN8_CTX_ID_WIDTH) - 1 - idx;
- /*
- * GuC uses the top bit to signal proxy submission, so
- * ignore that bit.
- */
- stream->specific_ctx_id_mask =
- (1U << (GEN8_CTX_ID_WIDTH - 1)) - 1;
- }
- break;
+ /*
+ * When using GuC, the context descriptor we write in i915 is
+ * read by GuC and rewritten before it's actually written into
+ * the hardware. The LRCA is what is put into the context id
+ * field of the context descriptor by GuC. Because it's
+ * aligned to a page, the lower 12bits are always at 0 and
+ * dropped by GuC. They won't be part of the context ID in the
+ * OA reports, so squash those lower bits.
+ */
+ return lower_32_bits(ce->lrc_desc) >> 12;
case 11:
- case 12: {
- stream->specific_ctx_id_mask =
- ((1U << GEN11_SW_CTX_ID_WIDTH) - 1) << (GEN11_SW_CTX_ID_SHIFT - 32);
+ case 12:
/*
- * Pick an unused context id
- * 0 - (NUM_CONTEXT_TAG - 1) are used by other contexts
- * GEN12_MAX_CONTEXT_HW_ID (0x7ff) is used by idle context
+ * Pick an unused context id 0 -
+ * (NUM_CONTEXT_TAG - 1) are used by other
+ * contexts GEN12_MAX_CONTEXT_HW_ID (0x7ff) is
+ * used by idle context
*/
- stream->specific_ctx_id = (GEN12_MAX_CONTEXT_HW_ID - 1) << (GEN11_SW_CTX_ID_SHIFT - 32);
- BUILD_BUG_ON((GEN12_MAX_CONTEXT_HW_ID - 1) < NUM_CONTEXT_TAG);
- break;
- }
+ return ((GEN12_MAX_CONTEXT_HW_ID - 1) - idx) << (GEN11_SW_CTX_ID_SHIFT - 32);
default:
MISSING_CASE(INTEL_GEN(ce->engine->i915));
+ return 0;
}
+}
+
+static int oa_get_render_ctx_ids(struct i915_perf_stream *stream)
+{
+ struct intel_context *ce;
+ int i, err;
+
+ stream->ctx_id_mask = get_ctx_id_mask(stream->engine);
+
+ for (i = 0; i < stream->n_ctxs; i++) {
+ struct i915_gem_context *ctx = stream->ctxs[i];
+ struct i915_gem_engines_iter it;
- ce->tag = stream->specific_ctx_id;
+ for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
+ if (ce->engine != stream->engine) /* first match! */
+ continue;
- drm_dbg(&stream->perf->i915->drm,
- "filtering on ctx_id=0x%x ctx_id_mask=0x%x\n",
- stream->specific_ctx_id,
- stream->specific_ctx_id_mask);
+ /*
+ * As the ID is the gtt offset of the context's vma we
+ * pin the vma to ensure the ID remains fixed.
+ */
+ err = intel_context_pin(ce);
+ if (err) {
+ i915_gem_context_unlock_engines(ctx);
+ goto err;
+ }
+
+ stream->pinned_ctxs[i] = ce;
+ stream->ctx_ids[i] = get_ctx_id(ce, i);
+
+ drm_dbg(&stream->perf->i915->drm,
+ "filtering on ctx_id%i=0x%x ctx_id_mask=0x%x\n",
+ i, stream->ctx_ids[i], stream->ctx_id_mask);
+
+ ce->tag = stream->ctx_ids[i];
+
+ break;
+ }
+ i915_gem_context_unlock_engines(ctx);
+ }
return 0;
+
+err:
+ while (i--) {
+ ce = fetch_and_zero(&stream->pinned_ctxs[i]);
+ if (ce) {
+ ce->tag = 0; /* recomputed on next submission after parking */
+ intel_context_unpin(ce);
+ }
+
+ stream->ctx_ids[i] = INVALID_CTX_ID;
+ }
+
+ stream->ctx_id_mask = 0;
+
+ return err;
}
/**
- * oa_put_render_ctx_id - counterpart to oa_get_render_ctx_id releases hold
+ * oa_put_render_ctx_id - counterpart to oa_get_render_ctx_ids releases hold
* @stream: An i915-perf stream opened for OA metrics
*
* In case anything needed doing to ensure the context HW ID would remain valid
* for the lifetime of the stream, then that can be undone here.
*/
-static void oa_put_render_ctx_id(struct i915_perf_stream *stream)
+static void oa_put_render_ctx_ids(struct i915_perf_stream *stream)
{
- struct intel_context *ce;
+ int i;
- ce = fetch_and_zero(&stream->pinned_ctx);
- if (ce) {
- ce->tag = 0; /* recomputed on next submission after parking */
- intel_context_unpin(ce);
+ for (i = 0; i < stream->n_ctxs; i++) {
+ struct intel_context *ce;
+
+ ce = fetch_and_zero(&stream->pinned_ctxs[i]);
+ if (ce) {
+ ce->tag = 0; /* recomputed on next submission after parking */
+ intel_context_unpin(ce);
+ }
+
+ stream->ctx_ids[i] = INVALID_CTX_ID;
}
- stream->specific_ctx_id = INVALID_CTX_ID;
- stream->specific_ctx_id_mask = 0;
+ stream->ctx_id_mask = 0;
}
static void
@@ -1407,8 +1453,7 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
intel_uncore_forcewake_put(stream->uncore, FORCEWAKE_ALL);
intel_engine_pm_put(stream->engine);
- if (stream->ctx)
- oa_put_render_ctx_id(stream);
+ oa_put_render_ctx_ids(stream);
free_oa_configs(stream);
free_noa_wait(stream);
@@ -1502,7 +1547,7 @@ static void gen8_init_oa_buffer(struct i915_perf_stream *stream)
* reports we will forward to userspace while filtering for a single
* context.
*/
- stream->oa_buffer.last_ctx_id = INVALID_CTX_ID;
+ stream->oa_buffer.last_ctx_match = false;
spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags);
@@ -1558,7 +1603,7 @@ static void gen12_init_oa_buffer(struct i915_perf_stream *stream)
* reports we will forward to userspace while filtering for a single
* context.
*/
- stream->oa_buffer.last_ctx_id = INVALID_CTX_ID;
+ stream->oa_buffer.last_ctx_match = false;
spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags);
@@ -2001,6 +2046,7 @@ static struct i915_request *
emit_oa_config(struct i915_perf_stream *stream,
struct i915_oa_config *oa_config,
struct intel_context *ce,
+ struct i915_request *parent_rq,
bool global)
{
struct i915_oa_config_bo *oa_bo;
@@ -2027,6 +2073,12 @@ emit_oa_config(struct i915_perf_stream *stream,
goto err_vma_unpin;
}
+ if (parent_rq) {
+ err = i915_request_await_dma_fence(rq, &parent_rq->fence);
+ if (err)
+ goto err_add_request;
+ }
+
i915_vma_lock(vma);
err = i915_request_await_object(rq, vma->obj, 0);
if (!err)
@@ -2051,11 +2103,6 @@ emit_oa_config(struct i915_perf_stream *stream,
return err ? ERR_PTR(err) : rq;
}
-static struct intel_context *oa_context(struct i915_perf_stream *stream)
-{
- return stream->pinned_ctx ?: stream->engine->kernel_context;
-}
-
static struct i915_request *
hsw_enable_metric_set(struct i915_perf_stream *stream)
{
@@ -2079,13 +2126,13 @@ hsw_enable_metric_set(struct i915_perf_stream *stream)
rq = emit_oa_config(stream, stream->oa_config,
stream->engine->kernel_context,
- false /* global */);
+ NULL, false /* global */);
if (IS_ERR(rq))
return rq;
return emit_oa_config(stream, stream->oa_config,
stream->engine->kernel_context,
- true /* global */);
+ NULL, true /* global */);
}
static void hsw_disable_metric_set(struct i915_perf_stream *stream)
@@ -2279,10 +2326,9 @@ static int gen8_configure_context(struct i915_gem_context *ctx,
return err;
}
-static int gen12_configure_oar_context(struct i915_perf_stream *stream, bool enable)
+static int gen12_configure_oar_contexts(struct i915_perf_stream *stream, bool enable)
{
- int err;
- struct intel_context *ce = stream->pinned_ctx;
+ int i;
u32 format = stream->oa_buffer.format;
struct flex regs_context[] = {
{
@@ -2303,7 +2349,7 @@ static int gen12_configure_oar_context(struct i915_perf_stream *stream, bool ena
(enable ? GEN12_OAR_OACONTROL_COUNTER_ENABLE : 0)
},
{
- RING_CONTEXT_CONTROL(ce->engine->mmio_base),
+ RING_CONTEXT_CONTROL(stream->engine->mmio_base),
CTX_CONTEXT_CONTROL,
_MASKED_FIELD(GEN12_CTX_CTRL_OAR_CONTEXT_ENABLE,
enable ?
@@ -2312,18 +2358,27 @@ static int gen12_configure_oar_context(struct i915_perf_stream *stream, bool ena
},
};
- /* Modify the context image of pinned context with regs_context*/
- err = intel_context_lock_pinned(ce);
- if (err)
- return err;
+ for (i = 0; i < stream->n_ctxs; i++) {
+ struct intel_context *ce = stream->pinned_ctxs[i];
+ int err;
- err = gen8_modify_context(ce, regs_context, ARRAY_SIZE(regs_context));
- intel_context_unlock_pinned(ce);
- if (err)
- return err;
+ /* Modify the context image of pinned context with regs_context*/
+ err = intel_context_lock_pinned(ce);
+ if (err)
+ return err;
+
+ err = gen8_modify_context(ce, regs_context, ARRAY_SIZE(regs_context));
+ intel_context_unlock_pinned(ce);
+ if (err)
+ return err;
+
+ /* Apply regs_lri using LRI with pinned context */
+ err = gen8_modify_self(ce, regs_lri, ARRAY_SIZE(regs_lri));
+ if (err)
+ return err;
+ }
- /* Apply regs_lri using LRI with pinned context */
- return gen8_modify_self(ce, regs_lri, ARRAY_SIZE(regs_lri));
+ return 0;
}
/*
@@ -2516,13 +2571,13 @@ gen8_enable_metric_set(struct i915_perf_stream *stream)
rq = emit_oa_config(stream, oa_config,
stream->engine->kernel_context,
- false /* global */);
+ NULL, false /* global */);
if (IS_ERR(rq))
return rq;
return emit_oa_config(stream, stream->oa_config,
stream->engine->kernel_context,
- true /* global */);
+ NULL, true /* global */);
}
static u32 oag_report_ctx_switches(const struct i915_perf_stream *stream)
@@ -2572,19 +2627,19 @@ gen12_enable_metric_set(struct i915_perf_stream *stream)
* another set of performance registers. Configure the unit dealing
* with those.
*/
- ret = gen12_configure_oar_context(stream, true);
+ ret = gen12_configure_oar_contexts(stream, true);
if (ret)
return ERR_PTR(ret);
rq = emit_oa_config(stream, oa_config,
stream->engine->kernel_context,
- false /* global */);
+ NULL, false /* global */);
if (IS_ERR(rq))
return rq;
return emit_oa_config(stream, stream->oa_config,
stream->engine->kernel_context,
- true /* global */);
+ NULL, true /* global */);
}
static void gen8_disable_metric_set(struct i915_perf_stream *stream)
@@ -2616,8 +2671,7 @@ static void gen12_disable_metric_set(struct i915_perf_stream *stream)
gen12_configure_all_contexts(stream, NULL);
/* disable the context save/restore or OAR counters */
- if (stream->ctx)
- gen12_configure_oar_context(stream, false);
+ gen12_configure_oar_contexts(stream, false);
/* Make sure we disable noa to save power. */
intel_uncore_rmw(uncore, RPM_CONFIG1, GEN10_GT_NOA_ENABLE, 0);
@@ -2626,8 +2680,7 @@ static void gen12_disable_metric_set(struct i915_perf_stream *stream)
static void gen7_oa_enable(struct i915_perf_stream *stream)
{
struct intel_uncore *uncore = stream->uncore;
- struct i915_gem_context *ctx = stream->ctx;
- u32 ctx_id = stream->specific_ctx_id;
+ u32 ctx_id = stream->ctx_ids[0];
bool periodic = stream->periodic;
u32 period_exponent = stream->period_exponent;
u32 report_format = stream->oa_buffer.format;
@@ -2649,7 +2702,7 @@ static void gen7_oa_enable(struct i915_perf_stream *stream)
GEN7_OACONTROL_TIMER_PERIOD_SHIFT) |
(periodic ? GEN7_OACONTROL_TIMER_ENABLE : 0) |
(report_format << GEN7_OACONTROL_FORMAT_SHIFT) |
- (ctx ? GEN7_OACONTROL_PER_CTX_ENABLE : 0) |
+ (stream->n_ctxs ? GEN7_OACONTROL_PER_CTX_ENABLE : 0) |
GEN7_OACONTROL_ENABLE);
}
@@ -2877,7 +2930,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
}
if (!(props->sample_flags & SAMPLE_OA_REPORT) &&
- (INTEL_GEN(perf->i915) < 12 || !stream->ctx)) {
+ (INTEL_GEN(perf->i915) < 12 || !stream->n_ctxs)) {
DRM_DEBUG("Only OA report sampling supported\n");
return -EINVAL;
}
@@ -2925,12 +2978,10 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
if (stream->periodic)
stream->period_exponent = props->oa_period_exponent;
- if (stream->ctx) {
- ret = oa_get_render_ctx_id(stream);
- if (ret) {
- DRM_DEBUG("Invalid context id to filter with\n");
- return ret;
- }
+ ret = oa_get_render_ctx_ids(stream);
+ if (ret) {
+ DRM_DEBUG("Invalid context id to filter with\n");
+ return ret;
}
ret = alloc_noa_wait(stream);
@@ -3003,8 +3054,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
free_noa_wait(stream);
err_noa_wait_alloc:
- if (stream->ctx)
- oa_put_render_ctx_id(stream);
+ oa_put_render_ctx_ids(stream);
return ret;
}
@@ -3239,8 +3289,12 @@ static void i915_perf_enable_locked(struct i915_perf_stream *stream)
if (stream->ops->enable)
stream->ops->enable(stream);
- if (stream->hold_preemption)
- intel_context_set_nopreempt(stream->pinned_ctx);
+ if (stream->hold_preemption) {
+ int i;
+
+ for (i = 0; i < stream->n_ctxs; i++)
+ intel_context_set_nopreempt(stream->pinned_ctxs[i]);
+ }
}
/**
@@ -3265,8 +3319,12 @@ static void i915_perf_disable_locked(struct i915_perf_stream *stream)
/* Allow stream->ops->disable() to refer to this */
stream->enabled = false;
- if (stream->hold_preemption)
- intel_context_clear_nopreempt(stream->pinned_ctx);
+ if (stream->hold_preemption) {
+ int i;
+
+ for (i = 0; i < stream->n_ctxs; i++)
+ intel_context_clear_nopreempt(stream->pinned_ctxs[i]);
+ }
if (stream->ops->disable)
stream->ops->disable(stream);
@@ -3283,36 +3341,42 @@ static long i915_perf_config_locked(struct i915_perf_stream *stream,
return -EINVAL;
if (config != stream->oa_config) {
- struct i915_request *rq;
+ struct i915_request *rq, *prev_rq = NULL;
+ int i;
- /*
- * If OA is bound to a specific context, emit the
- * reconfiguration inline from that context. The update
- * will then be ordered with respect to submission on that
- * context.
- *
- * When set globally, we use a low priority kernel context,
- * so it will effectively take effect when idle.
- */
- rq = emit_oa_config(stream, config,
- oa_context(stream),
- false /* global */);
- if (IS_ERR(rq)) {
- ret = PTR_ERR(rq);
- goto err;
- }
+ for (i = 0; i < stream->n_ctxs; i++) {
+ /*
+ * If OA is bound to a specific context, emit the
+ * reconfiguration inline from that context. The
+ * update will then be ordered with respect to
+ * submission on that context.
+ *
+ * When set globally, we use a low priority kernel
+ * context, so it will effectively take effect when
+ * idle.
+ */
+ rq = emit_oa_config(stream, config,
+ stream->pinned_ctxs[i],
+ prev_rq, false /* global */);
+ if (IS_ERR(rq)) {
+ ret = PTR_ERR(rq);
+ goto err;
+ }
- i915_request_put(rq);
+ i915_request_put(prev_rq);
+ prev_rq = rq;
+ }
rq = emit_oa_config(stream, config,
- oa_context(stream),
- true /* global */);
+ stream->pinned_ctxs[0],
+ prev_rq, true /* global */);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
goto err;
}
config = xchg(&stream->oa_config, config);
+ i915_request_put(prev_rq);
i915_request_put(rq);
}
@@ -3396,8 +3460,8 @@ static void i915_perf_destroy_locked(struct i915_perf_stream *stream)
if (stream->ops->destroy)
stream->ops->destroy(stream);
- if (stream->ctx)
- i915_gem_context_put(stream->ctx);
+ while (stream->n_ctxs--)
+ i915_gem_context_put(stream->ctxs[stream->n_ctxs]);
kfree(stream);
}
@@ -3473,25 +3537,12 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,
struct perf_open_properties *props,
struct drm_file *file)
{
- struct i915_gem_context *specific_ctx = NULL;
+ struct drm_i915_file_private *file_priv = file->driver_priv;
struct i915_perf_stream *stream = NULL;
unsigned long f_flags = 0;
bool privileged_op = true;
int stream_fd;
- int ret;
-
- if (props->single_context) {
- u32 ctx_handle = props->ctx_handle;
- struct drm_i915_file_private *file_priv = file->driver_priv;
-
- specific_ctx = i915_gem_context_lookup(file_priv, ctx_handle);
- if (!specific_ctx) {
- DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n",
- ctx_handle);
- ret = -ENOENT;
- goto err;
- }
- }
+ int i, ret;
/*
* On Haswell the OA unit supports clock gating off for a specific
@@ -3512,17 +3563,16 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,
* doesn't request global stream access (i.e. query based sampling
* using MI_RECORD_PERF_COUNT.
*/
- if (IS_HASWELL(perf->i915) && specific_ctx)
+ if (IS_HASWELL(perf->i915) && props->n_ctx_handles > 0)
privileged_op = false;
- else if (IS_GEN(perf->i915, 12) && specific_ctx &&
+ else if (IS_GEN(perf->i915, 12) && (props->n_ctx_handles > 0) &&
(props->sample_flags & SAMPLE_OA_REPORT) == 0)
privileged_op = false;
if (props->hold_preemption) {
- if (!props->single_context) {
+ if (!props->n_ctx_handles) {
DRM_DEBUG("preemption disable with no context\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
privileged_op = true;
}
@@ -3543,22 +3593,31 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,
if (privileged_op &&
i915_perf_stream_paranoid && !capable(CAP_SYS_ADMIN)) {
DRM_DEBUG("Insufficient privileges to open i915 perf stream\n");
- ret = -EACCES;
- goto err_ctx;
+ return -EACCES;
}
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
- if (!stream) {
- ret = -ENOMEM;
- goto err_ctx;
- }
+ if (!stream)
+ return -ENOMEM;
stream->perf = perf;
- stream->ctx = specific_ctx;
+ for (i = 0; i < props->n_ctx_handles; i++) {
+ stream->ctxs[i] = i915_gem_context_lookup(file_priv,
+ props->ctx_handles[i]);
+ if (!stream->ctxs[i]) {
+ DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n",
+ props->ctx_handles[i]);
+
+ ret = -ENOENT;
+ goto err_ctx;
+ }
+
+ stream->n_ctxs++;
+ }
ret = i915_oa_stream_init(stream, param, props);
if (ret)
- goto err_alloc;
+ goto err_ctx;
/* we avoid simply assigning stream->sample_flags = props->sample_flags
* to have _stream_init check the combination of sample flags more
@@ -3593,12 +3652,10 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,
err_flags:
if (stream->ops->destroy)
stream->ops->destroy(stream);
-err_alloc:
- kfree(stream);
err_ctx:
- if (specific_ctx)
- i915_gem_context_put(specific_ctx);
-err:
+ while (stream->n_ctxs--)
+ i915_gem_context_put(stream->ctxs[stream->n_ctxs]);
+ kfree(stream);
return ret;
}
@@ -3678,8 +3735,12 @@ static int read_properties_unlocked(struct i915_perf *perf,
switch ((enum drm_i915_perf_property_id)id) {
case DRM_I915_PERF_PROP_CTX_HANDLE:
- props->single_context = 1;
- props->ctx_handle = value;
+ if (props->n_ctx_handles > 0) {
+ DRM_DEBUG("Context handle specified multiple times\n");
+ return -EINVAL;
+ }
+ props->ctx_handles[0] = value;
+ props->n_ctx_handles = 1;
break;
case DRM_I915_PERF_PROP_SAMPLE_OA:
if (value)
@@ -28,6 +28,8 @@ struct i915_vma;
struct intel_context;
struct intel_engine_cs;
+#define I915_PERF_MAX_FILTER_CONTEXTS (4)
+
struct i915_oa_format {
u32 format;
int size;
@@ -159,10 +161,15 @@ struct i915_perf_stream {
int sample_size;
/**
- * @ctx: %NULL if measuring system-wide across all contexts or a
- * specific context that is being monitored.
+ * @n_ctxs: Number of contexts pinned for the recording.
+ */
+ u32 n_ctxs;
+
+ /**
+ * @ctxs: All to %NULL if measuring system-wide across all contexts or
+ * a list specific contexts that are being monitored.
*/
- struct i915_gem_context *ctx;
+ struct i915_gem_context *ctxs[I915_PERF_MAX_FILTER_CONTEXTS];
/**
* @enabled: Whether the stream is currently enabled, considering
@@ -199,17 +206,17 @@ struct i915_perf_stream {
/**
* @pinned_ctx: The OA context specific information.
*/
- struct intel_context *pinned_ctx;
+ struct intel_context *pinned_ctxs[I915_PERF_MAX_FILTER_CONTEXTS];
/**
- * @specific_ctx_id: The id of the specific context.
+ * @ctx_id: The ids of the specific contexts.
*/
- u32 specific_ctx_id;
+ u32 ctx_ids[I915_PERF_MAX_FILTER_CONTEXTS];
/**
- * @specific_ctx_id_mask: The mask used to masking specific_ctx_id bits.
+ * @ctx_id_mask: The mask used to masking specific_ctx_id bits.
*/
- u32 specific_ctx_id_mask;
+ u32 ctx_id_mask;
/**
* @poll_check_timer: High resolution timer that will periodically
@@ -245,7 +252,7 @@ struct i915_perf_stream {
struct {
struct i915_vma *vma;
u8 *vaddr;
- u32 last_ctx_id;
+ bool last_ctx_match;
int format;
int format_size;
int size_exponent;
Make all the internal necessary changes before we flip the switch. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> --- drivers/gpu/drm/i915/i915_perf.c | 493 ++++++++++++++----------- drivers/gpu/drm/i915/i915_perf_types.h | 25 +- 2 files changed, 293 insertions(+), 225 deletions(-)