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From: sourab.gupta@intel.com
To: intel-gfx@lists.freedesktop.org
Cc: Jabin Wu <jabin.wu@intel.com>, Sourab Gupta <sourab.gupta@intel.com>
Subject: [PATCH 04/11] drm/i915: Add ctx getparam ioctl parameter to retrieve ctx global id
Date: Tue, 16 Feb 2016 10:57:12 +0530	[thread overview]
Message-ID: <1455600439-18480-5-git-send-email-sourab.gupta@intel.com> (raw)
In-Reply-To: <1455600439-18480-1-git-send-email-sourab.gupta@intel.com>

From: Sourab Gupta <sourab.gupta@intel.com>

This patch adds a new ctx getparam ioctl parameter, which can be used to
retrieve ctx global_id for any particular ctx by userspace.

This can be used by userspace to map the i915 perf samples with their
particular ctx's, since those would be having ctx global_id's.
Otherwise the userspace has no way of maintaining this association,
since it has the knowledge of only per-drm file specific ctx handles.

Signed-off-by: Sourab Gupta <sourab.gupta@intel.com>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 3 +++
 include/uapi/drm/i915_drm.h             | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 3a90e79..18c545c 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -960,6 +960,9 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
 	case I915_CONTEXT_PARAM_NO_ZEROMAP:
 		args->value = ctx->flags & CONTEXT_NO_ZEROMAP;
 		break;
+	case I915_CONTEXT_PARAM_GLOBAL_ID:
+		args->value = ctx->global_id;
+		break;
 	default:
 		ret = -EINVAL;
 		break;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 4a67895..e1f13b4 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1131,6 +1131,7 @@ struct drm_i915_gem_context_param {
 	__u64 param;
 #define I915_CONTEXT_PARAM_BAN_PERIOD 0x1
 #define I915_CONTEXT_PARAM_NO_ZEROMAP 0x2
+#define I915_CONTEXT_PARAM_GLOBAL_ID 0x3
 	__u64 value;
 };
 
-- 
1.9.1

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  parent reply	other threads:[~2016-02-16  5:25 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-16  5:27 [PATCH 00/11] Framework to collect gpu metrics using i915 perf infrastructure sourab.gupta
2016-02-16  5:27 ` [PATCH 01/11] drm/i915: Introduce global id for contexts sourab.gupta
2016-02-16  5:27 ` [PATCH 02/11] drm/i915: Constrain intel_context::global_id to 20 bits sourab.gupta
2016-02-16  5:27 ` [PATCH 03/11] drm/i915: return ctx->global_id from intel_execlists_ctx_id() sourab.gupta
2016-02-16  9:34   ` Dave Gordon
2016-02-16  5:27 ` sourab.gupta [this message]
2016-02-16  5:27 ` [PATCH 05/11] drm/i915: Expose OA sample source to userspace sourab.gupta
2016-02-16  5:27 ` [PATCH 06/11] drm/i915: Framework for capturing command stream based OA reports sourab.gupta
2016-02-17 17:30   ` Robert Bragg
2016-02-19  6:51     ` sourab gupta
2016-02-16  5:27 ` [PATCH 07/11] drm/i915: Add support for having pid output with OA report sourab.gupta
2016-02-16  5:27 ` [PATCH 08/11] drm/i915: Add support to add execbuffer tags to OA counter reports sourab.gupta
2016-02-16  5:27 ` [PATCH 09/11] drm/i915: Extend i915 perf framework for collecting timestamps on all gpu engines sourab.gupta
2016-02-16  5:27 ` [PATCH 10/11] drm/i915: Support opening multiple concurrent perf streams sourab.gupta
2016-02-16  5:27 ` [PATCH 11/11] drm/i915: Support for capturing MMIO register values sourab.gupta

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