[igt-dev] [PATCH i-g-t 0/4] tests/perf: Add new tests for enabling the OA interrupt

[igt-dev] [PATCH i-g-t 0/4] tests/perf: Add new tests for enabling the OA interrupt

[Lionel Landwerlin]

This series is testing the new OA interrupt support we would like to
add in the i915/perf driver.

Cheers,

Lionel Landwerlin (4):
  bump headers
  tests/perf: new tests for parameterized OA buffer polling
  tests/perf: new tests for OA interrupt
  tests/perf: add flush data ioctl test

 include/drm-uapi/drm_fourcc.h |  23 ++
 include/drm-uapi/drm_mode.h   |  19 ++
 include/drm-uapi/i915_drm.h   |  35 +++
 include/drm-uapi/msm_drm.h    |  25 +-
 include/drm-uapi/v3d_drm.h    |  33 +++
 tests/perf.c                  | 499 +++++++++++++++++++++++++++++++---
 6 files changed, 592 insertions(+), 42 deletions(-)

--
2.20.1
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[igt-dev] [PATCH i-g-t 1/4] bump headers

[Lionel Landwerlin]

---
 include/drm-uapi/drm_fourcc.h | 23 +++++++++++++++++++++++
 include/drm-uapi/drm_mode.h   | 19 +++++++++++++++++++
 include/drm-uapi/i915_drm.h   | 35 +++++++++++++++++++++++++++++++++++
 include/drm-uapi/msm_drm.h    | 25 +++++++++++++++++++------
 include/drm-uapi/v3d_drm.h    | 33 +++++++++++++++++++++++++++++++++
 5 files changed, 129 insertions(+), 6 deletions(-)

diff --git a/include/drm-uapi/drm_fourcc.h b/include/drm-uapi/drm_fourcc.h
index 4ddf754b..9e90abaa 100644
--- a/include/drm-uapi/drm_fourcc.h
+++ b/include/drm-uapi/drm_fourcc.h
@@ -581,10 +581,18 @@ extern "C" {
  * Indicates the superblock size(s) used for the AFBC buffer. The buffer
  * size (in pixels) must be aligned to a multiple of the superblock size.
  * Four lowest significant bits(LSBs) are reserved for block size.
+ *
+ * Where one superblock size is specified, it applies to all planes of the
+ * buffer (e.g. 16x16, 32x8). When multiple superblock sizes are specified,
+ * the first applies to the Luma plane and the second applies to the Chroma
+ * plane(s). e.g. (32x8_64x4 means 32x8 Luma, with 64x4 Chroma).
+ * Multiple superblock sizes are only valid for multi-plane YCbCr formats.
  */
 #define AFBC_FORMAT_MOD_BLOCK_SIZE_MASK      0xf
 #define AFBC_FORMAT_MOD_BLOCK_SIZE_16x16     (1ULL)
 #define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8      (2ULL)
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_64x4      (3ULL)
+#define AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4 (4ULL)
 
 /*
  * AFBC lossless colorspace transform
@@ -644,6 +652,21 @@ extern "C" {
  */
 #define AFBC_FORMAT_MOD_SC      (1ULL <<  9)
 
+/*
+ * AFBC double-buffer
+ *
+ * Indicates that the buffer is allocated in a layout safe for front-buffer
+ * rendering.
+ */
+#define AFBC_FORMAT_MOD_DB      (1ULL << 10)
+
+/*
+ * AFBC buffer content hints
+ *
+ * Indicates that the buffer includes per-superblock content hints.
+ */
+#define AFBC_FORMAT_MOD_BCH     (1ULL << 11)
+
 #if defined(__cplusplus)
 }
 #endif
diff --git a/include/drm-uapi/drm_mode.h b/include/drm-uapi/drm_mode.h
index d3e0fe31..a439c2e6 100644
--- a/include/drm-uapi/drm_mode.h
+++ b/include/drm-uapi/drm_mode.h
@@ -888,6 +888,25 @@ struct drm_mode_revoke_lease {
 	__u32 lessee_id;
 };
 
+/**
+ * struct drm_mode_rect - Two dimensional rectangle.
+ * @x1: Horizontal starting coordinate (inclusive).
+ * @y1: Vertical starting coordinate (inclusive).
+ * @x2: Horizontal ending coordinate (exclusive).
+ * @y2: Vertical ending coordinate (exclusive).
+ *
+ * With drm subsystem using struct drm_rect to manage rectangular area this
+ * export it to user-space.
+ *
+ * Currently used by drm_mode_atomic blob property FB_DAMAGE_CLIPS.
+ */
+struct drm_mode_rect {
+	__s32 x1;
+	__s32 y1;
+	__s32 x2;
+	__s32 y2;
+};
+
 #if defined(__cplusplus)
 }
 #endif
diff --git a/include/drm-uapi/i915_drm.h b/include/drm-uapi/i915_drm.h
index e39b26d4..6822d087 100644
--- a/include/drm-uapi/i915_drm.h
+++ b/include/drm-uapi/i915_drm.h
@@ -1540,6 +1540,22 @@ enum drm_i915_perf_property_id {
 	 */
 	DRM_I915_PERF_PROP_OA_EXPONENT,
 
+	/**
+	 * Specifying this property sets up a hrtimer in nanoseconds at which
+	 * the i915 driver will check the OA buffer for available data. A
+	 * value of 0 means no hrtimer will be started. Values below 100
+	 * microseconds are not allowed.
+	 */
+	DRM_I915_PERF_PROP_POLL_OA_DELAY,
+
+	/**
+	 * Specifying this property sets up the interrupt mechanism for the OA
+	 * buffer in i915. This option in conjuction with a long polling delay
+	 * for avaibility of OA data can reduce CPU load significantly if you
+	 * do not care about OA data being read as soon as it's available.
+	 */
+	DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT,
+
 	DRM_I915_PERF_PROP_MAX /* non-ABI */
 };
 
@@ -1578,6 +1594,25 @@ struct drm_i915_perf_open_param {
  */
 #define I915_PERF_IOCTL_DISABLE	_IO('i', 0x1)
 
+/**
+ * Actively check the availability of data from a stream.
+ *
+ * A stream data availability can be driven by two types of events :
+ *
+ *   - if enabled, the kernel's hrtimer checking the amount of available data
+ *     in the OA buffer through head/tail registers.
+ *
+ *   - if enabled, the OA unit's interrupt mechanism
+ *
+ * The kernel hrtimer incur a cost of running callback at fixed time
+ * intervals, while the OA interrupt might only happen rarely. In the
+ * situation where the application has disabled the kernel's hrtimer and only
+ * uses the OA interrupt to know about available data, the application can
+ * request an active check of the available OA data through this ioctl. This
+ * will make any data in the OA buffer available with either poll() or read().
+ */
+#define I915_PERF_IOCTL_FLUSH_DATA _IO('i', 0x2)
+
 /**
  * Common to all i915 perf records
  */
diff --git a/include/drm-uapi/msm_drm.h b/include/drm-uapi/msm_drm.h
index c06d0a5b..91a16b33 100644
--- a/include/drm-uapi/msm_drm.h
+++ b/include/drm-uapi/msm_drm.h
@@ -105,14 +105,24 @@ struct drm_msm_gem_new {
 	__u32 handle;         /* out */
 };
 
-#define MSM_INFO_IOVA	0x01
-
-#define MSM_INFO_FLAGS (MSM_INFO_IOVA)
+/* Get or set GEM buffer info.  The requested value can be passed
+ * directly in 'value', or for data larger than 64b 'value' is a
+ * pointer to userspace buffer, with 'len' specifying the number of
+ * bytes copied into that buffer.  For info returned by pointer,
+ * calling the GEM_INFO ioctl with null 'value' will return the
+ * required buffer size in 'len'
+ */
+#define MSM_INFO_GET_OFFSET	0x00   /* get mmap() offset, returned by value */
+#define MSM_INFO_GET_IOVA	0x01   /* get iova, returned by value */
+#define MSM_INFO_SET_NAME	0x02   /* set the debug name (by pointer) */
+#define MSM_INFO_GET_NAME	0x03   /* get debug name, returned by pointer */
 
 struct drm_msm_gem_info {
 	__u32 handle;         /* in */
-	__u32 flags;	      /* in - combination of MSM_INFO_* flags */
-	__u64 offset;         /* out, mmap() offset or iova */
+	__u32 info;           /* in - one of MSM_INFO_* */
+	__u64 value;          /* in or out */
+	__u32 len;            /* in or out */
+	__u32 pad;
 };
 
 #define MSM_PREP_READ        0x01
@@ -188,8 +198,11 @@ struct drm_msm_gem_submit_cmd {
  */
 #define MSM_SUBMIT_BO_READ             0x0001
 #define MSM_SUBMIT_BO_WRITE            0x0002
+#define MSM_SUBMIT_BO_DUMP             0x0004
 
-#define MSM_SUBMIT_BO_FLAGS            (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE)
+#define MSM_SUBMIT_BO_FLAGS            (MSM_SUBMIT_BO_READ | \
+					MSM_SUBMIT_BO_WRITE | \
+					MSM_SUBMIT_BO_DUMP)
 
 struct drm_msm_gem_submit_bo {
 	__u32 flags;          /* in, mask of MSM_SUBMIT_BO_x */
diff --git a/include/drm-uapi/v3d_drm.h b/include/drm-uapi/v3d_drm.h
index b1e5de07..ea70669d 100644
--- a/include/drm-uapi/v3d_drm.h
+++ b/include/drm-uapi/v3d_drm.h
@@ -36,6 +36,7 @@ extern "C" {
 #define DRM_V3D_MMAP_BO                           0x03
 #define DRM_V3D_GET_PARAM                         0x04
 #define DRM_V3D_GET_BO_OFFSET                     0x05
+#define DRM_V3D_SUBMIT_TFU                        0x06
 
 #define DRM_IOCTL_V3D_SUBMIT_CL           DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_CL, struct drm_v3d_submit_cl)
 #define DRM_IOCTL_V3D_WAIT_BO             DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_WAIT_BO, struct drm_v3d_wait_bo)
@@ -43,6 +44,7 @@ extern "C" {
 #define DRM_IOCTL_V3D_MMAP_BO             DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_MMAP_BO, struct drm_v3d_mmap_bo)
 #define DRM_IOCTL_V3D_GET_PARAM           DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_GET_PARAM, struct drm_v3d_get_param)
 #define DRM_IOCTL_V3D_GET_BO_OFFSET       DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_GET_BO_OFFSET, struct drm_v3d_get_bo_offset)
+#define DRM_IOCTL_V3D_SUBMIT_TFU          DRM_IOW(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_TFU, struct drm_v3d_submit_tfu)
 
 /**
  * struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D
@@ -50,6 +52,14 @@ extern "C" {
  *
  * This asks the kernel to have the GPU execute an optional binner
  * command list, and a render command list.
+ *
+ * The L1T, slice, L2C, L2T, and GCA caches will be flushed before
+ * each CL executes.  The VCD cache should be flushed (if necessary)
+ * by the submitted CLs.  The TLB writes are guaranteed to have been
+ * flushed by the time the render done IRQ happens, which is the
+ * trigger for out_sync.  Any dirtying of cachelines by the job (only
+ * possible using TMU writes) must be flushed by the caller using the
+ * CL's cache flush commands.
  */
 struct drm_v3d_submit_cl {
 	/* Pointer to the binner command list.
@@ -179,6 +189,7 @@ enum drm_v3d_param {
 	DRM_V3D_PARAM_V3D_CORE0_IDENT0,
 	DRM_V3D_PARAM_V3D_CORE0_IDENT1,
 	DRM_V3D_PARAM_V3D_CORE0_IDENT2,
+	DRM_V3D_PARAM_SUPPORTS_TFU,
 };
 
 struct drm_v3d_get_param {
@@ -197,6 +208,28 @@ struct drm_v3d_get_bo_offset {
 	__u32 offset;
 };
 
+struct drm_v3d_submit_tfu {
+	__u32 icfg;
+	__u32 iia;
+	__u32 iis;
+	__u32 ica;
+	__u32 iua;
+	__u32 ioa;
+	__u32 ios;
+	__u32 coef[4];
+	/* First handle is the output BO, following are other inputs.
+	 * 0 for unused.
+	 */
+	__u32 bo_handles[4];
+	/* sync object to block on before running the TFU job.  Each TFU
+	 * job will execute in the order submitted to its FD.  Synchronization
+	 * against rendering jobs requires using sync objects.
+	 */
+	__u32 in_sync;
+	/* Sync object to signal when the TFU job is done. */
+	__u32 out_sync;
+};
+
 #if defined(__cplusplus)
 }
 #endif
-- 
2.20.1

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[igt-dev] [PATCH i-g-t 2/4] tests/perf: new tests for parameterized OA buffer polling

[Lionel Landwerlin]

2 new tests verifying that the OA buffer is properly checked at the
frequency specified by userspace.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 tests/perf.c | 147 ++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 111 insertions(+), 36 deletions(-)

diff --git a/tests/perf.c b/tests/perf.c
index 220c52ef..1a773455 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -210,6 +210,24 @@ get_oa_format(enum drm_i915_oa_format format)
 	return gen8_oa_formats[format];
 }
 
+static char *
+pretty_print_oa_period(uint64_t oa_period_ns)
+{
+	static char result[100];
+	static const char *units[4] = { "ns", "us", "ms", "s" };
+	double val = oa_period_ns;
+	int iter = 0;
+
+	while (iter < (ARRAY_SIZE(units) - 1) &&
+	       val >= 1000.0f) {
+		val /= 1000.0f;
+		iter++;
+	}
+
+	snprintf(result, sizeof(result), "%.3f%s", val, units[iter]);
+	return result;
+}
+
 static void
 __perf_close(int fd)
 {
@@ -1993,15 +2011,9 @@ get_time(void)
  * kernelspace.
  */
 static void
-test_blocking(void)
+test_blocking(uint64_t requested_oa_period, bool set_kernel_hrtimer, uint64_t kernel_hrtimer)
 {
-	/* ~40 milliseconds
-	 *
-	 * Having a period somewhat > sysconf(_SC_CLK_TCK) helps to stop
-	 * scheduling (liable to kick in when we make blocking poll()s/reads)
-	 * from interfering with the test.
-	 */
-	int oa_exponent = max_oa_exponent_for_period_lte(40000000);
+	int oa_exponent = max_oa_exponent_for_period_lte(requested_oa_period);
 	uint64_t oa_period = oa_exponent_to_ns(oa_exponent);
 	uint64_t properties[] = {
 		/* Include OA reports in samples */
@@ -2011,11 +2023,16 @@ test_blocking(void)
 		DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
 		DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
 		DRM_I915_PERF_PROP_OA_EXPONENT, oa_exponent,
+
+		/* Kernel configuration (optional) */
+		DRM_I915_PERF_PROP_POLL_OA_DELAY, kernel_hrtimer,
 	};
 	struct drm_i915_perf_open_param param = {
 		.flags = I915_PERF_FLAG_FD_CLOEXEC |
 			I915_PERF_FLAG_DISABLED,
-		.num_properties = sizeof(properties) / 16,
+		.num_properties = (set_kernel_hrtimer ?
+				   (ARRAY_SIZE(properties) / 2) :
+				   ((ARRAY_SIZE(properties) / 2) - 1)),
 		.properties_ptr = to_user_pointer(properties),
 	};
 	uint8_t buf[1024 * 1024];
@@ -2037,7 +2054,7 @@ test_blocking(void)
 	 * the knowledge that that the driver uses a 200Hz hrtimer (5ms period)
 	 * to check for data and giving some time to read().
 	 */
-	int min_iterations = (test_duration_ns / (oa_period + 6000000ull));
+	int min_iterations = (test_duration_ns / (oa_period + kernel_hrtimer + kernel_hrtimer / 5));
 
 	int64_t start, end;
 	int n = 0;
@@ -2047,9 +2064,10 @@ test_blocking(void)
 	times(&start_times);
 
 	igt_debug("tick length = %dns, test duration = %"PRIu64"ns, min iter. = %d,"
-		  " estimated max iter. = %d, oa_period = %"PRIu64"ns\n",
+		  " estimated max iter. = %d, oa_period = %s\n",
 		  (int)tick_ns, test_duration_ns,
-		  min_iterations, max_iterations, oa_period);
+		  min_iterations, max_iterations,
+		  pretty_print_oa_period(oa_period));
 
 	/* In the loop we perform blocking polls while the HW is sampling at
 	 * ~25Hz, with the expectation that we spend most of our time blocked
@@ -2151,15 +2169,9 @@ test_blocking(void)
 }
 
 static void
-test_polling(void)
+test_polling(uint64_t requested_oa_period, bool set_kernel_hrtimer, uint64_t kernel_hrtimer)
 {
-	/* ~40 milliseconds
-	 *
-	 * Having a period somewhat > sysconf(_SC_CLK_TCK) helps to stop
-	 * scheduling (liable to kick in when we make blocking poll()s/reads)
-	 * from interfering with the test.
-	 */
-	int oa_exponent = max_oa_exponent_for_period_lte(40000000);
+	int oa_exponent = max_oa_exponent_for_period_lte(requested_oa_period);
 	uint64_t oa_period = oa_exponent_to_ns(oa_exponent);
 	uint64_t properties[] = {
 		/* Include OA reports in samples */
@@ -2169,12 +2181,17 @@ test_polling(void)
 		DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
 		DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
 		DRM_I915_PERF_PROP_OA_EXPONENT, oa_exponent,
+
+		/* Kernel configuration (optional) */
+		DRM_I915_PERF_PROP_POLL_OA_DELAY, kernel_hrtimer,
 	};
 	struct drm_i915_perf_open_param param = {
 		.flags = I915_PERF_FLAG_FD_CLOEXEC |
 			I915_PERF_FLAG_DISABLED |
 			I915_PERF_FLAG_FD_NONBLOCK,
-		.num_properties = sizeof(properties) / 16,
+		.num_properties = (set_kernel_hrtimer ?
+				   (ARRAY_SIZE(properties) / 2) :
+				   ((ARRAY_SIZE(properties) / 2) - 1)),
 		.properties_ptr = to_user_pointer(properties),
 	};
 	uint8_t buf[1024 * 1024];
@@ -2188,24 +2205,24 @@ test_polling(void)
 	int n_extra_iterations = 0;
 
 	/* It's a bit tricky to put a lower limit here, but we expect a
-	 * relatively low latency for seeing reports, while we don't currently
-	 * give any control over this in the api.
+	 * relatively low latency for seeing reports.
 	 *
-	 * We assume a maximum latency of 6 millisecond to deliver a POLLIN and
-	 * read() after a new sample is written (46ms per iteration) considering
-	 * the knowledge that that the driver uses a 200Hz hrtimer (5ms period)
-	 * to check for data and giving some time to read().
+	 * We assume a maximum latency of kernel_hrtimer + some margin
+	 * to deliver a POLLIN and read() after a new sample is
+	 * written (40ms + hrtimer + margin per iteration) considering
+	 * the knowledge that that the driver uses a 200Hz hrtimer
+	 * (5ms period) to check for data and giving some time to
+	 * read().
 	 */
-	int min_iterations = (test_duration_ns / (oa_period + 6000000ull));
+	int min_iterations = (test_duration_ns / (oa_period + (kernel_hrtimer + kernel_hrtimer / 5)));
 	int64_t start, end;
 	int n = 0;
 
 	stream_fd = __perf_open(drm_fd, &param, true /* prevent_pm */);
 
-	times(&start_times);
-
-	igt_debug("tick length = %dns, test duration = %"PRIu64"ns, min iter. = %d, max iter. = %d\n",
-		  (int)tick_ns, test_duration_ns,
+	igt_debug("tick length = %dns, oa period = %s, "
+		  "test duration = %"PRIu64"ns, min iter. = %d, max iter. = %d\n",
+		  (int)tick_ns, pretty_print_oa_period(oa_period), test_duration_ns,
 		  min_iterations, max_iterations);
 
 	/* In the loop we perform blocking polls while the HW is sampling at
@@ -4082,6 +4099,32 @@ test_sysctl_defaults(void)
 	igt_assert_eq(max_freq, 100000);
 }
 
+static bool
+kernel_supports_open_option(int fd, uint64_t option, uint64_t value)
+{
+	uint64_t properties[] = {
+		/* Intentionally wrong handle */
+		DRM_I915_PERF_PROP_CTX_HANDLE, UINT64_MAX,
+
+		DRM_I915_PERF_PROP_SAMPLE_OA, true,
+		DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
+		DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
+		DRM_I915_PERF_PROP_OA_EXPONENT, max_oa_exponent_for_period_lte(5000),
+		option, value,
+	};
+	struct drm_i915_perf_open_param param = {
+		.flags = I915_PERF_FLAG_FD_CLOEXEC,
+		.num_properties = ARRAY_SIZE(properties) / 2,
+		.properties_ptr = to_user_pointer(properties),
+	};
+	int ret;
+
+	ret = igt_ioctl(fd, DRM_IOCTL_I915_PERF_OPEN, &param);
+	assert(ret == -1);
+
+	return errno == ENOENT;
+}
+
 igt_main
 {
 	igt_skip_on_simulation();
@@ -4165,11 +4208,43 @@ igt_main
 	igt_subtest("enable-disable")
 		test_enable_disable();
 
-	igt_subtest("blocking")
-		test_blocking();
+	igt_subtest("blocking") {
+		test_blocking(40 * 1000 * 1000 /* 40ms oa period */,
+			      false /* set_kernel_hrtimer */,
+			      5 * 1000 * 1000 /* default 5ms/200Hz hrtimer */);
+	}
 
-	igt_subtest("polling")
-		test_polling();
+	igt_subtest("blocking-parameterized") {
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_POLL_OA_DELAY,
+							40 * 1000 * 1000));
+
+		test_blocking(10 * 1000 * 1000 /* 10ms oa period */,
+			      true /* set_kernel_hrtimer */,
+			      40 * 1000 * 1000 /* default 40ms hrtimer */);
+		test_blocking(500 * 1000 /* 500us oa period */,
+			      true /* set_kernel_hrtimer */,
+			      500 * 1000 /* default 500us hrtimer */);
+	}
+
+	igt_subtest("polling") {
+		test_polling(40 * 1000 * 1000 /* 40ms oa period */,
+			     false /* set_kernel_hrtimer */,
+			     5 * 1000 * 1000 /* default 5ms/200Hz hrtimer */);
+	}
+
+	igt_subtest("polling-parameterized") {
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_POLL_OA_DELAY,
+							40 * 1000 * 1000));
+
+		test_polling(10 * 1000 * 1000 /* 10ms oa period */,
+			     true /* set_kernel_hrtimer */,
+			     40 * 1000 * 1000 /* default 40ms hrtimer */);
+		test_polling(500 * 1000 /* 500us oa period */,
+			     true /* set_kernel_hrtimer */,
+			     500 * 1000 /* default 500us hrtimer */);
+	}
 
 	igt_subtest("short-reads")
 		test_short_reads();
-- 
2.20.1

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[igt-dev] [PATCH i-g-t 3/4] tests/perf: new tests for OA interrupt

[Lionel Landwerlin]

Those tests verify that the interrupt wakes up userspace waiting on
the perf stream either with poll() or with read().

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 tests/perf.c | 218 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 218 insertions(+)

diff --git a/tests/perf.c b/tests/perf.c
index 1a773455..3effc34d 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -442,6 +442,20 @@ oa_exponent_to_ns(int exponent)
        return 1000000000ULL * (2ULL << exponent) / timestamp_frequency;
 }
 
+static int
+find_oa_exponent_for_buffer_fill_time(size_t oa_buf_size, size_t report_size, uint64_t fill_time_ns)
+{
+       size_t n_reports = oa_buf_size / report_size;
+
+       for (int e = 1; e < 32; e++) {
+               if (fill_time_ns < oa_exponent_to_ns(e) * n_reports)
+                       return e;
+       }
+
+       igt_assert(!"reached");
+       return -1;
+}
+
 static bool
 oa_report_is_periodic(uint32_t oa_exponent, const uint32_t *report)
 {
@@ -2354,6 +2368,111 @@ test_polling(uint64_t requested_oa_period, bool set_kernel_hrtimer, uint64_t ker
 	__perf_close(stream_fd);
 }
 
+static void
+test_interrupt(uint64_t oa_exponent,
+	       uint64_t kernel_oa_poll_delay,
+	       bool use_interrupt,
+	       bool expect_buffer_lost,
+	       bool use_polling,
+	       uint32_t expect_min_reports)
+{
+	uint64_t properties[] = {
+		/* Include OA reports in samples */
+		DRM_I915_PERF_PROP_SAMPLE_OA, true,
+
+		/* OA unit configuration */
+		DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
+		DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
+		DRM_I915_PERF_PROP_OA_EXPONENT, oa_exponent,
+		DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT, use_interrupt,
+
+		/* Kernel configuration */
+		DRM_I915_PERF_PROP_POLL_OA_DELAY, kernel_oa_poll_delay,
+	};
+	struct drm_i915_perf_open_param param = {
+		.flags = I915_PERF_FLAG_FD_CLOEXEC |
+			I915_PERF_FLAG_DISABLED |
+			(use_polling ? I915_PERF_FLAG_FD_NONBLOCK : 0),
+		.num_properties = ARRAY_SIZE(properties) / 2,
+		.properties_ptr = to_user_pointer(properties),
+	};
+	struct pollfd pollfd = { .events = POLLIN };
+	struct drm_i915_perf_record_header *header;
+	uint32_t n_reports = 0;
+	bool buffer_lost = false;
+	uint8_t *buf = malloc(MAX_OA_BUF_SIZE);
+	int ret;
+
+	stream_fd = __perf_open(drm_fd, &param, true /* prevent_pm */);
+	pollfd.fd = stream_fd;
+
+	igt_debug("OA period = %s, ",
+		  pretty_print_oa_period(oa_exponent_to_ns(oa_exponent)));
+	igt_debug("OA poll delay = %s, use interrupt = %i, "
+		  "expected min report = %u\n",
+		  pretty_print_oa_period(kernel_oa_poll_delay),
+		  use_interrupt, expect_min_reports);
+
+	do_ioctl(stream_fd, I915_PERF_IOCTL_ENABLE, 0);
+
+	if (use_polling) {
+		while ((ret = poll(&pollfd, 1, -1)) < 0 &&
+		       errno == EINTR)
+			;
+		igt_assert_eq(ret, 1);
+		igt_assert(pollfd.revents & POLLIN);
+	}
+
+	while ((ret = read(stream_fd, buf, MAX_OA_BUF_SIZE)) < 0 &&
+	       errno == EINTR)
+		;
+
+	if (ret < 0)
+		igt_debug("Unexpected error when reading after poll = %d\n", errno);
+	igt_assert_neq(ret, -1);
+
+	__perf_close(stream_fd);
+
+	/* For Haswell reports don't contain a well defined reason
+	 * field we so assume all reports to be 'periodic'. For gen8+
+	 * we want to to consider that the HW automatically writes some
+	 * non periodic reports (e.g. on context switch) which might
+	 * lead to more successful read()s than expected due to
+	 * periodic sampling and we don't want these extra reads to
+	 * cause the test to fail...
+	 */
+	for (int offset = 0; offset < ret; offset += header->size) {
+		header = (void *)(buf + offset);
+
+		switch (header->type) {
+		case DRM_I915_PERF_RECORD_SAMPLE:
+			n_reports++;
+			break;
+		case DRM_I915_PERF_RECORD_OA_BUFFER_LOST:
+			buffer_lost = true;
+			break;
+		}
+	}
+
+	igt_debug("Got %i report(s)\n", n_reports);
+
+	igt_assert_eq(buffer_lost, expect_buffer_lost);
+
+	/*
+	 * Leave a 5% error margin for 2 reasons :
+	 *
+	 * - the tail pointer race condition might remove a couple of
+	 *   reports because things have not yet landed in memory.
+	 *
+	 * - the OA unit sometimes drop a writing a report here and
+	 *   there, the algorithm is linked to pressure on memory
+	 *   controller but undocumented.
+	 */
+	igt_assert_lte(expect_min_reports * 0.95, n_reports);
+
+	free(buf);
+}
+
 static void
 test_buffer_fill(void)
 {
@@ -4227,6 +4346,56 @@ igt_main
 			      500 * 1000 /* default 500us hrtimer */);
 	}
 
+	igt_subtest("blocking-with-interrupt") {
+		uint64_t target_fill_time = /* 1000ms */ 1000 * 1000 * 1000ul;
+		size_t report_size = get_oa_format(test_oa_format).size;
+		uint32_t max_reports = MAX_OA_BUF_SIZE / report_size;
+		int oa_exponent =
+			find_oa_exponent_for_buffer_fill_time(MAX_OA_BUF_SIZE,
+							      report_size, target_fill_time);
+		uint64_t fill_time = oa_exponent_to_ns(oa_exponent) *
+			(MAX_OA_BUF_SIZE / report_size);
+
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_POLL_OA_DELAY,
+							target_fill_time));
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT,
+							true));
+
+		/*
+		 * We should be waken up by the HR timer but too late,
+		 * so we'll loose reports.
+		 */
+		test_interrupt(oa_exponent,
+			       fill_time + fill_time / 2,
+			       false /* interrupt */, true /* loss */, false /* use_polling */,
+			       0);
+
+		/*
+		 * We should get woken up by the HR timer and get the
+		 * appropriate number of report.
+		 */
+		test_interrupt(oa_exponent,
+			       /* 500us */ 500 * 1000,
+			       false /* interrupt */, false /* no loss */, false /* use_polling */,
+			       (500 * 1000 * max_reports) / fill_time);
+
+
+		/* We should be waken up by the interrupt first. */
+		test_interrupt(oa_exponent,
+			       2 * fill_time,
+			       true /* interrupt */, false /* no loss */, false /* use_polling */,
+			       max_reports / 2);
+
+		/* We should be waken up by the HR timer first. */
+		test_interrupt(oa_exponent,
+			       fill_time / 4,
+			       true /* interrupt */, false /* no loss */, false /* use_polling */,
+			       (fill_time / 4) * max_reports / fill_time);
+	}
+
+
 	igt_subtest("polling") {
 		test_polling(40 * 1000 * 1000 /* 40ms oa period */,
 			     false /* set_kernel_hrtimer */,
@@ -4246,6 +4415,55 @@ igt_main
 			     500 * 1000 /* default 500us hrtimer */);
 	}
 
+	igt_subtest("polling-with-interrupt") {
+		uint64_t target_fill_time = /* 1000ms */ 1000 * 1000 * 1000ul;
+		size_t report_size = get_oa_format(test_oa_format).size;
+		uint32_t max_reports = MAX_OA_BUF_SIZE / report_size;
+		int oa_exponent =
+			find_oa_exponent_for_buffer_fill_time(MAX_OA_BUF_SIZE,
+							      report_size, target_fill_time);
+		uint64_t fill_time = oa_exponent_to_ns(oa_exponent) *
+			(MAX_OA_BUF_SIZE / report_size);
+
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_POLL_OA_DELAY,
+							target_fill_time));
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT,
+							true));
+
+		/*
+		 * We should be waken up by the HR timer but too late,
+		 * so we'll loose reports.
+		 */
+		test_interrupt(oa_exponent,
+			       fill_time + fill_time / 2,
+			       false /* interrupt */, true /* loss */, true /* use_polling */,
+			       0);
+
+		/*
+		 * We should get woken up by the HR timer and get the
+		 * appropriate number of report.
+		 */
+		test_interrupt(oa_exponent,
+			       /* 500us */ 500 * 1000,
+			       false /* interrupt */, false /* no loss */, true /* use_polling */,
+			       (500 * 1000 * max_reports) / fill_time);
+
+
+		/* We should be waken up by the interrupt first. */
+		test_interrupt(oa_exponent,
+			       2 * fill_time,
+			       true /* interrupt */, false /* no loss */, true /* use_polling */,
+			       max_reports / 2);
+
+		/* We should be waken up by the HR timer first. */
+		test_interrupt(oa_exponent,
+			       fill_time / 4,
+			       true /* interrupt */, false /* no loss */, true /* use_polling */,
+			       (fill_time / 4) * max_reports / fill_time);
+	}
+
 	igt_subtest("short-reads")
 		test_short_reads();
 
-- 
2.20.1

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Re: [igt-dev] [PATCH i-g-t 3/4] tests/perf: new tests for OA interrupt

[Chris Wilson]

Quoting Lionel Landwerlin (2019-01-16 15:37:31)
> +       if (use_polling) {
> +               while ((ret = poll(&pollfd, 1, -1)) < 0 &&
> +                      errno == EINTR)
> +                       ;

Hmm, are we sending signals to ourself? Just wondering if EINTR here is
a kernel bug...

> +               igt_assert_eq(ret, 1);
> +               igt_assert(pollfd.revents & POLLIN);
> +       }
> +
> +       while ((ret = read(stream_fd, buf, MAX_OA_BUF_SIZE)) < 0 &&
> +              errno == EINTR)
> +               ;
> +
> +       if (ret < 0)
> +               igt_debug("Unexpected error when reading after poll = %d\n", errno);
> +       igt_assert_neq(ret, -1);

igt_assert_f(ret != -1,
		"Unexpected error when reading after poll, %m\n");
-Chris
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Re: [igt-dev] [PATCH i-g-t 3/4] tests/perf: new tests for OA interrupt

[Lionel Landwerlin]

On 16/01/2019 23:30, Chris Wilson wrote:
> Quoting Lionel Landwerlin (2019-01-16 15:37:31)
>> +       if (use_polling) {
>> +               while ((ret = poll(&pollfd, 1, -1)) < 0 &&
>> +                      errno == EINTR)
>> +                       ;
> Hmm, are we sending signals to ourself? Just wondering if EINTR here is
> a kernel bug...


Hmm nope. I just assumed anything could interrupt us.

I think igt_ioctl() does the same right?


>
>> +               igt_assert_eq(ret, 1);
>> +               igt_assert(pollfd.revents & POLLIN);
>> +       }
>> +
>> +       while ((ret = read(stream_fd, buf, MAX_OA_BUF_SIZE)) < 0 &&
>> +              errno == EINTR)
>> +               ;
>> +
>> +       if (ret < 0)
>> +               igt_debug("Unexpected error when reading after poll = %d\n", errno);
>> +       igt_assert_neq(ret, -1);
> igt_assert_f(ret != -1,
> 		"Unexpected error when reading after poll, %m\n");
> -Chris
>

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Re: [igt-dev] [PATCH i-g-t 3/4] tests/perf: new tests for OA interrupt

[Chris Wilson]

Quoting Lionel Landwerlin (2019-01-17 11:03:48)
> On 16/01/2019 23:30, Chris Wilson wrote:
> > Quoting Lionel Landwerlin (2019-01-16 15:37:31)
> >> +       if (use_polling) {
> >> +               while ((ret = poll(&pollfd, 1, -1)) < 0 &&
> >> +                      errno == EINTR)
> >> +                       ;
> > Hmm, are we sending signals to ourself? Just wondering if EINTR here is
> > a kernel bug...
> 
> 
> Hmm nope. I just assumed anything could interrupt us.
> 
> I think igt_ioctl() does the same right?

In the general case, we do need to restart on signals as we do interrupt
ourselves.

I was worrying in case you've observed EINTR here in practice, as I
couldn't see a reason why (hence fretting over whether the chain of
wake_ups is causing issues in the kernel).
-Chris
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[igt-dev] [PATCH i-g-t 4/4] tests/perf: add flush data ioctl test

[Lionel Landwerlin]

Ensure we have proper behavior for the new I915_PERF_IOCTL_FLUSH_DATA.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 tests/perf.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)

diff --git a/tests/perf.c b/tests/perf.c
index 3effc34d..2bf7e2c9 100644
--- a/tests/perf.c
+++ b/tests/perf.c
@@ -3724,6 +3724,129 @@ gen8_test_single_ctx_render_target_writes_a_counter(void)
 	} while (WEXITSTATUS(child_ret) == EAGAIN);
 }
 
+/*
+ * Verifies that the I915_PERF_IOCTL_FLUSH_DATA ioctl forces the
+ * i915-perf driver to look at the available data in the OA buffer.
+ */
+static void
+test_flush_data(void)
+{
+	size_t report_size = get_oa_format(test_oa_format).size;
+	int oa_exponent =
+		find_oa_exponent_for_buffer_fill_time(MAX_OA_BUF_SIZE,
+						      report_size,
+						      500 * 1000 * 1000 /* 500ms */);
+	uint64_t oa_period = oa_exponent_to_ns(oa_exponent);
+	size_t oa_buf_size = MAX_OA_BUF_SIZE;
+	int n_full_oa_reports = oa_buf_size / report_size;
+	uint64_t fill_duration = n_full_oa_reports * oa_period;
+	uint64_t properties[] = {
+		/* Include OA reports in samples */
+		DRM_I915_PERF_PROP_SAMPLE_OA, true,
+
+		/* OA unit configuration */
+		DRM_I915_PERF_PROP_OA_METRICS_SET, test_metric_set_id,
+		DRM_I915_PERF_PROP_OA_FORMAT, test_oa_format,
+		DRM_I915_PERF_PROP_OA_EXPONENT, oa_exponent,
+		DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT, true,
+
+		/* Kernel configuration */
+		DRM_I915_PERF_PROP_POLL_OA_DELAY, 0,
+	};
+	struct drm_i915_perf_open_param param = {
+		.flags = I915_PERF_FLAG_FD_CLOEXEC |
+		         I915_PERF_FLAG_FD_NONBLOCK |
+		         I915_PERF_FLAG_DISABLED,
+		.num_properties = ARRAY_SIZE(properties) / 2,
+		.properties_ptr = to_user_pointer(properties),
+	};
+	struct pollfd pollfd = { .events = POLLIN };
+	struct drm_i915_perf_record_header *header;
+	int buf_size = 65536 * (256 + sizeof(struct drm_i915_perf_record_header));
+	uint8_t *buf = malloc(buf_size);
+	uint32_t n_reports = 0, expected_reports, min_reports, max_reports;
+	int ret;
+
+	expected_reports = n_full_oa_reports / 5;
+	min_reports = expected_reports - expected_reports * 0.05;
+	max_reports = expected_reports + expected_reports * 0.05;
+
+	stream_fd = __perf_open(drm_fd, &param, false /* prevent_pm */);
+	pollfd.fd = stream_fd;
+
+	igt_debug("Fill duration for %s\n", pretty_print_oa_period(fill_duration));
+	igt_debug("Polling for %s\n", pretty_print_oa_period(fill_duration / 5));
+
+	do_ioctl(stream_fd, I915_PERF_IOCTL_ENABLE, 0);
+
+	/*
+	 * Wait for a fifth the fill duration, no data should be
+	 * available through poll()/read().
+	 */
+	while ((ret = poll(&pollfd, 1, fill_duration / (5 * 1000 * 1000))) < 0 &&
+	       errno == EINTR)
+		;
+
+	igt_assert_eq(ret, 0);
+	igt_assert_eq(pollfd.revents, 0);
+
+	while ((ret = read(stream_fd, buf, MAX_OA_BUF_SIZE)) < 0 &&
+	       errno == EINTR)
+		;
+
+	igt_assert_eq(ret, -1);
+	igt_assert_eq(errno, EAGAIN);
+
+	/* Now force the driver to look at the head/tail pointers. */
+	ret = igt_ioctl(stream_fd, I915_PERF_IOCTL_FLUSH_DATA, 0);
+
+	/* Is this supported on this kernel? */
+	igt_skip_on(ret == -1 && errno == EINVAL);
+
+	/* Now poll() should report available data. */
+	while ((ret = poll(&pollfd, 1, 0)) < 0 &&
+	       errno == EINTR)
+		;
+
+	igt_assert_eq(ret, 1);
+	igt_assert(pollfd.revents & POLLIN);
+
+	/* And we should be able to read it. */
+	while ((ret = read(stream_fd, buf, MAX_OA_BUF_SIZE)) < 0 &&
+	       errno == EINTR)
+		;
+
+	igt_assert_lte(report_size, ret);
+
+	for (int offset = 0; offset < ret; offset += header->size) {
+		header = (void *)(buf + offset);
+
+		switch (header->type) {
+		case DRM_I915_PERF_RECORD_SAMPLE:
+			n_reports++;
+			break;
+		case DRM_I915_PERF_RECORD_OA_BUFFER_LOST:
+			igt_assert(!"unexpected overflow");
+			break;
+		}
+	}
+
+	igt_debug("Got %i report(s), expected range [%u, %u]\n",
+		  n_reports, min_reports, max_reports);
+
+	/*
+	 * Verify that we get about a third of the OA buffer full of
+	 * report as we've waited for a third of the time it teakes to
+	 * fill the buffer.
+	 */
+	igt_assert_lte(n_reports, max_reports);
+	igt_assert_lte(min_reports, n_reports);
+
+	free(buf);
+
+	__perf_close(stream_fd);
+}
+
 static unsigned long rc6_residency_ms(void)
 {
 	return sysfs_read("power/rc6_residency_ms");
@@ -4464,6 +4587,17 @@ igt_main
 			       (fill_time / 4) * max_reports / fill_time);
 	}
 
+	igt_subtest("flush-data") {
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_POLL_OA_DELAY,
+							1000 * 1000 * 1000 /* 1 second */));
+		igt_require(kernel_supports_open_option(drm_fd,
+							DRM_I915_PERF_PROP_OA_ENABLE_INTERRUPT,
+							true));
+
+		test_flush_data();
+	}
+
 	igt_subtest("short-reads")
 		test_short_reads();
 
-- 
2.20.1

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[igt-dev] ✓ Fi.CI.BAT: success for tests/perf: Add new tests for enabling the OA interrupt

[Patchwork]

== Series Details ==

Series: tests/perf: Add new tests for enabling the OA interrupt
URL   : https://patchwork.freedesktop.org/series/55310/
State : success

== Summary ==

CI Bug Log - changes from IGT_4776 -> IGTPW_2248
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/55310/revisions/1/mbox/

Known issues
------------

  Here are the changes found in IGTPW_2248 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@i915_module_load@reload:
    - fi-kbl-7567u:       PASS -> DMESG-WARN [fdo#105602] / [fdo#108529]

  * igt@kms_chamelium@common-hpd-after-suspend:
    - fi-kbl-7567u:       PASS -> DMESG-FAIL [fdo#105079]

  * igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a:
    - fi-byt-clapper:     PASS -> FAIL [fdo#103191] / [fdo#107362] +1

  * igt@pm_rpm@module-reload:
    - fi-kbl-7567u:       NOTRUN -> DMESG-WARN [fdo#108529]

  
#### Possible fixes ####

  * igt@i915_module_load@reload-no-display:
    - fi-kbl-7567u:       DMESG-WARN [fdo#103558] / [fdo#105602] -> PASS

  * igt@i915_selftest@live_hangcheck:
    - fi-bwr-2160:        DMESG-FAIL [fdo#108735] -> PASS

  * igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a:
    - fi-blb-e6850:       INCOMPLETE [fdo#107718] -> PASS

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#103191]: https://bugs.freedesktop.org/show_bug.cgi?id=103191
  [fdo#103558]: https://bugs.freedesktop.org/show_bug.cgi?id=103558
  [fdo#105079]: https://bugs.freedesktop.org/show_bug.cgi?id=105079
  [fdo#105602]: https://bugs.freedesktop.org/show_bug.cgi?id=105602
  [fdo#107362]: https://bugs.freedesktop.org/show_bug.cgi?id=107362
  [fdo#107718]: https://bugs.freedesktop.org/show_bug.cgi?id=107718
  [fdo#108529]: https://bugs.freedesktop.org/show_bug.cgi?id=108529
  [fdo#108735]: https://bugs.freedesktop.org/show_bug.cgi?id=108735
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271


Participating hosts (49 -> 43)
------------------------------

  Missing    (6): fi-kbl-soraka fi-ilk-m540 fi-byt-squawks fi-bsw-cyan fi-ctg-p8600 fi-icl-y 


Build changes
-------------

    * IGT: IGT_4776 -> IGTPW_2248

  CI_DRM_5434: f7277432c1bb671177bdef59755cb88c4ad9f75f @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2248: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2248/
  IGT_4776: a76fa4d02cc806e30ed72ba1b8233c694ab1727b @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools



== Testlist changes ==

+igt@perf@blocking-parameterized
+igt@perf@blocking-with-interrupt
+igt@perf@flush-data
+igt@perf@polling-parameterized
+igt@perf@polling-with-interrupt

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2248/
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[igt-dev] ✓ Fi.CI.IGT: success for tests/perf: Add new tests for enabling the OA interrupt

[Patchwork]

== Series Details ==

Series: tests/perf: Add new tests for enabling the OA interrupt
URL   : https://patchwork.freedesktop.org/series/55310/
State : success

== Summary ==

CI Bug Log - changes from IGT_4776_full -> IGTPW_2248_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/55310/revisions/1/mbox/

Known issues
------------

  Here are the changes found in IGTPW_2248_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@kms_busy@extended-pageflip-hang-newfb-render-c:
    - shard-apl:          PASS -> DMESG-WARN [fdo#107956]
    - shard-glk:          NOTRUN -> DMESG-WARN [fdo#107956]

  * igt@kms_ccs@pipe-a-crc-sprite-planes-basic:
    - shard-glk:          PASS -> FAIL [fdo#108145] +1

  * igt@kms_cursor_crc@cursor-64x21-random:
    - shard-apl:          PASS -> FAIL [fdo#103232] +3

  * igt@kms_cursor_crc@cursor-64x64-dpms:
    - shard-kbl:          PASS -> FAIL [fdo#103232] +1

  * igt@kms_cursor_crc@cursor-size-change:
    - shard-glk:          PASS -> FAIL [fdo#103232] +1

  * igt@kms_frontbuffer_tracking@fbc-1p-primscrn-cur-indfb-draw-render:
    - shard-apl:          PASS -> FAIL [fdo#103167] +2
    - shard-kbl:          PASS -> FAIL [fdo#103167]

  * igt@kms_frontbuffer_tracking@fbc-1p-primscrn-spr-indfb-draw-mmap-gtt:
    - shard-glk:          PASS -> FAIL [fdo#103167] +3

  * igt@kms_plane@pixel-format-pipe-b-planes-source-clamping:
    - shard-apl:          PASS -> FAIL [fdo#108948]
    - shard-glk:          PASS -> FAIL [fdo#108948]

  * igt@kms_plane@plane-panning-bottom-right-suspend-pipe-b-planes:
    - shard-snb:          PASS -> INCOMPLETE [fdo#105411]

  * igt@kms_plane_alpha_blend@pipe-b-alpha-7efc:
    - shard-apl:          NOTRUN -> FAIL [fdo#108145]

  * igt@kms_plane_multiple@atomic-pipe-b-tiling-none:
    - shard-glk:          PASS -> FAIL [fdo#103166] +1
    - shard-apl:          PASS -> FAIL [fdo#103166] +4

  
#### Possible fixes ####

  * igt@kms_color@pipe-c-ctm-max:
    - shard-apl:          FAIL [fdo#108147] -> PASS

  * igt@kms_cursor_crc@cursor-128x128-suspend:
    - shard-glk:          FAIL [fdo#103232] -> PASS +2
    - shard-apl:          FAIL [fdo#103191] / [fdo#103232] -> PASS +1

  * igt@kms_cursor_crc@cursor-64x21-sliding:
    - shard-apl:          FAIL [fdo#103232] -> PASS +3

  * igt@kms_cursor_crc@cursor-64x64-suspend:
    - shard-kbl:          FAIL [fdo#103191] / [fdo#103232] -> PASS +1

  * igt@kms_draw_crc@draw-method-xrgb2101010-mmap-wc-xtiled:
    - shard-snb:          INCOMPLETE [fdo#105411] / [fdo#107469] -> PASS

  * igt@kms_flip@bo-too-big:
    - shard-kbl:          DMESG-WARN [fdo#105345] -> PASS

  * igt@kms_frontbuffer_tracking@fbc-1p-primscrn-spr-indfb-draw-mmap-wc:
    - shard-kbl:          FAIL [fdo#103167] -> PASS

  * igt@kms_frontbuffer_tracking@fbc-1p-primscrn-spr-indfb-onoff:
    - shard-apl:          FAIL [fdo#103167] -> PASS +1

  * igt@kms_frontbuffer_tracking@fbc-2p-primscrn-spr-indfb-draw-mmap-wc:
    - shard-glk:          FAIL [fdo#103167] -> PASS +3

  * igt@kms_plane@pixel-format-pipe-a-planes-source-clamping:
    - shard-apl:          FAIL [fdo#108948] -> PASS

  * igt@kms_plane_alpha_blend@pipe-c-constant-alpha-max:
    - shard-glk:          FAIL [fdo#108145] -> PASS
    - shard-apl:          FAIL [fdo#108145] -> PASS

  * igt@kms_plane_multiple@atomic-pipe-b-tiling-y:
    - shard-glk:          FAIL [fdo#103166] -> PASS +2

  * igt@kms_plane_multiple@atomic-pipe-c-tiling-yf:
    - shard-apl:          FAIL [fdo#103166] -> PASS
    - shard-kbl:          FAIL [fdo#103166] -> PASS +1

  * igt@kms_rotation_crc@primary-rotation-270:
    - shard-apl:          INCOMPLETE [fdo#103927] -> PASS

  * igt@kms_setmode@basic:
    - shard-kbl:          FAIL [fdo#99912] -> PASS

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#103166]: https://bugs.freedesktop.org/show_bug.cgi?id=103166
  [fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
  [fdo#103191]: https://bugs.freedesktop.org/show_bug.cgi?id=103191
  [fdo#103232]: https://bugs.freedesktop.org/show_bug.cgi?id=103232
  [fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
  [fdo#105345]: https://bugs.freedesktop.org/show_bug.cgi?id=105345
  [fdo#105411]: https://bugs.freedesktop.org/show_bug.cgi?id=105411
  [fdo#107469]: https://bugs.freedesktop.org/show_bug.cgi?id=107469
  [fdo#107956]: https://bugs.freedesktop.org/show_bug.cgi?id=107956
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#108147]: https://bugs.freedesktop.org/show_bug.cgi?id=108147
  [fdo#108948]: https://bugs.freedesktop.org/show_bug.cgi?id=108948
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109278]: https://bugs.freedesktop.org/show_bug.cgi?id=109278
  [fdo#99912]: https://bugs.freedesktop.org/show_bug.cgi?id=99912


Participating hosts (7 -> 5)
------------------------------

  Missing    (2): shard-skl shard-iclb 


Build changes
-------------

    * IGT: IGT_4776 -> IGTPW_2248

  CI_DRM_5434: f7277432c1bb671177bdef59755cb88c4ad9f75f @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2248: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2248/
  IGT_4776: a76fa4d02cc806e30ed72ba1b8233c694ab1727b @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2248/
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