[PATCH 5/8] drm/i915: Allow userspace to configure the watchdog
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Fri Mar 12 10:18:19 UTC 2021
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
...
I915_CONTEXT_PARAM_WATCHDOG
...
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 57 +++++++++++++++++++
.../gpu/drm/i915/gem/i915_gem_context_types.h | 4 ++
drivers/gpu/drm/i915/gt/intel_context_param.h | 11 +++-
include/uapi/drm/i915_drm.h | 5 +-
4 files changed, 75 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index ca37d93ef5e7..af69c27c7518 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -233,6 +233,8 @@ static void intel_context_set_gem(struct intel_context *ce,
if (ctx->sched.priority >= I915_PRIORITY_NORMAL &&
intel_engine_has_timeslices(ce->engine))
__set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
+
+ intel_context_set_watchdog_us(ce, ctx->watchdog.timeout_us);
}
static void __free_engines(struct i915_gem_engines *e, unsigned int count)
@@ -1397,6 +1399,27 @@ static int set_ringsize(struct i915_gem_context *ctx,
__intel_context_ring_size(args->value));
}
+static int __apply_watchdog(struct intel_context *ce, void *timeout_us)
+{
+ return intel_context_set_watchdog_us(ce, (u64)timeout_us);
+}
+
+static int set_watchdog(struct i915_gem_context *ctx,
+ struct drm_i915_gem_context_param *args)
+{
+ int ret;
+
+ if (args->size)
+ return -EINVAL;
+
+ ret = context_apply_all(ctx, __apply_watchdog, (void *)args->value);
+
+ if (!ret)
+ ctx->watchdog.timeout_us = args->value;
+
+ return ret;
+}
+
static int __get_ringsize(struct intel_context *ce, void *arg)
{
long sz;
@@ -1426,6 +1449,17 @@ static int get_ringsize(struct i915_gem_context *ctx,
return 0;
}
+static int get_watchdog(struct i915_gem_context *ctx,
+ struct drm_i915_gem_context_param *args)
+{
+ if (args->size)
+ return -EINVAL;
+
+ args->value = ctx->watchdog.timeout_us;
+
+ return 0;
+}
+
int
i915_gem_user_to_context_sseu(struct intel_gt *gt,
const struct drm_i915_gem_context_param_sseu *user,
@@ -2075,6 +2109,10 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv,
ret = set_ringsize(ctx, args);
break;
+ case I915_CONTEXT_PARAM_WATCHDOG:
+ ret = set_watchdog(ctx, args);
+ break;
+
case I915_CONTEXT_PARAM_BAN_PERIOD:
default:
ret = -EINVAL;
@@ -2196,6 +2234,20 @@ static int clone_schedattr(struct i915_gem_context *dst,
return 0;
}
+static int clone_watchdog(struct i915_gem_context *dst,
+ struct i915_gem_context *src)
+{
+ int ret;
+
+ ret = context_apply_all(dst, __apply_watchdog,
+ (void *)src->watchdog.timeout_us);
+
+ if (!ret)
+ dst->watchdog = src->watchdog;
+
+ return ret;
+}
+
static int clone_sseu(struct i915_gem_context *dst,
struct i915_gem_context *src)
{
@@ -2279,6 +2331,7 @@ static int create_clone(struct i915_user_extension __user *ext, void *data)
MAP(SSEU, clone_sseu),
MAP(TIMELINE, clone_timeline),
MAP(VM, clone_vm),
+ MAP(WATCHDOG, clone_watchdog),
#undef MAP
};
struct drm_i915_gem_context_create_ext_clone local;
@@ -2532,6 +2585,10 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
ret = get_ringsize(ctx, args);
break;
+ case I915_CONTEXT_PARAM_WATCHDOG:
+ ret = get_watchdog(ctx, args);
+ break;
+
case I915_CONTEXT_PARAM_BAN_PERIOD:
default:
ret = -EINVAL;
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 d5bc75508048..f17da7e26c43 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -150,6 +150,10 @@ struct i915_gem_context {
*/
atomic_t active_count;
+ struct {
+ u64 timeout_us;
+ } watchdog;
+
/**
* @hang_timestamp: The last time(s) this context caused a GPU hang
*/
diff --git a/drivers/gpu/drm/i915/gt/intel_context_param.h b/drivers/gpu/drm/i915/gt/intel_context_param.h
index f053d8633fe2..3ecacc675f41 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_param.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_param.h
@@ -6,9 +6,18 @@
#ifndef INTEL_CONTEXT_PARAM_H
#define INTEL_CONTEXT_PARAM_H
-struct intel_context;
+#include <linux/types.h>
+
+#include "intel_context.h"
int intel_context_set_ring_size(struct intel_context *ce, long sz);
long intel_context_get_ring_size(struct intel_context *ce);
+static inline int
+intel_context_set_watchdog_us(struct intel_context *ce, u64 timeout_us)
+{
+ ce->watchdog.timeout_us = timeout_us;
+ return 0;
+}
+
#endif /* INTEL_CONTEXT_PARAM_H */
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 1987e2ea79a3..a4c65780850c 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1694,6 +1694,8 @@ struct drm_i915_gem_context_param {
* Default is 16 KiB.
*/
#define I915_CONTEXT_PARAM_RINGSIZE 0xc
+
+#define I915_CONTEXT_PARAM_WATCHDOG 0xd
/* Must be kept compact -- no holes and well documented */
__u64 value;
@@ -1863,7 +1865,8 @@ struct drm_i915_gem_context_create_ext_clone {
#define I915_CONTEXT_CLONE_SSEU (1u << 3)
#define I915_CONTEXT_CLONE_TIMELINE (1u << 4)
#define I915_CONTEXT_CLONE_VM (1u << 5)
-#define I915_CONTEXT_CLONE_UNKNOWN -(I915_CONTEXT_CLONE_VM << 1)
+#define I915_CONTEXT_CLONE_WATCHDOG (1u << 6)
+#define I915_CONTEXT_CLONE_UNKNOWN -(I915_CONTEXT_CLONE_WATCHDOG << 1)
__u64 rsvd;
};
--
2.27.0
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