From 3e05531243d032bbff157999c99a30a969966927 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 21 Mar 2019 14:07:10 +0000 Subject: [PATCH] drm/i915: Stop storing ctx->user_handle The user_handle need only be known by userspace for it to lookup the context via the idr; internally we have no use for it. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20190321140711.11190-3-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 5 ++-- drivers/gpu/drm/i915/i915_gem_context.c | 23 ++++++++----------- drivers/gpu/drm/i915/i915_gem_context.h | 5 ---- drivers/gpu/drm/i915/i915_gem_context_types.h | 9 -------- drivers/gpu/drm/i915/i915_gpu_error.c | 11 ++++----- drivers/gpu/drm/i915/i915_gpu_error.h | 1 - drivers/gpu/drm/i915/selftests/mock_context.c | 2 +- 7 files changed, 16 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 0dd8b3fa7fb9..47bf07a59b5e 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -409,9 +409,8 @@ static void print_context_stats(struct seq_file *m, rcu_read_lock(); task = pid_task(ctx->pid ?: file->pid, PIDTYPE_PID); - snprintf(name, sizeof(name), "%s/%d", - task ? task->comm : "", - ctx->user_handle); + snprintf(name, sizeof(name), "%s", + task ? task->comm : ""); rcu_read_unlock(); print_file_stats(m, name, stats); diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 9c6987ee27e5..9187910391d8 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -602,20 +602,15 @@ static int gem_context_register(struct i915_gem_context *ctx, /* And finally expose ourselves to userspace via the idr */ mutex_lock(&fpriv->context_idr_lock); - ret = idr_alloc(&fpriv->context_idr, ctx, - DEFAULT_CONTEXT_HANDLE, 0, GFP_KERNEL); - if (ret >= 0) - ctx->user_handle = ret; + ret = idr_alloc(&fpriv->context_idr, ctx, 0, 0, GFP_KERNEL); mutex_unlock(&fpriv->context_idr_lock); - if (ret < 0) - goto err_name; - - return 0; + if (ret >= 0) + goto out; -err_name: kfree(fetch_and_zero(&ctx->name)); err_pid: put_pid(fetch_and_zero(&ctx->pid)); +out: return ret; } @@ -638,11 +633,11 @@ int i915_gem_context_open(struct drm_i915_private *i915, } err = gem_context_register(ctx, file_priv); - if (err) + if (err < 0) goto err_ctx; - GEM_BUG_ON(ctx->user_handle != DEFAULT_CONTEXT_HANDLE); GEM_BUG_ON(i915_gem_context_is_kernel(ctx)); + GEM_BUG_ON(err > 0); return 0; @@ -852,10 +847,10 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, return PTR_ERR(ctx); ret = gem_context_register(ctx, file_priv); - if (ret) + if (ret < 0) goto err_ctx; - args->ctx_id = ctx->user_handle; + args->ctx_id = ret; DRM_DEBUG("HW context %d created\n", args->ctx_id); return 0; @@ -877,7 +872,7 @@ int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, if (args->pad != 0) return -EINVAL; - if (args->ctx_id == DEFAULT_CONTEXT_HANDLE) + if (!args->ctx_id) return -ENOENT; if (mutex_lock_interruptible(&file_priv->context_idr_lock)) diff --git a/drivers/gpu/drm/i915/i915_gem_context.h b/drivers/gpu/drm/i915/i915_gem_context.h index 5a32c4b4816f..7e79d1ffbaef 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.h +++ b/drivers/gpu/drm/i915/i915_gem_context.h @@ -126,11 +126,6 @@ static inline void i915_gem_context_unpin_hw_id(struct i915_gem_context *ctx) atomic_dec(&ctx->hw_id_pin_count); } -static inline bool i915_gem_context_is_default(const struct i915_gem_context *c) -{ - return c->user_handle == DEFAULT_CONTEXT_HANDLE; -} - static inline bool i915_gem_context_is_kernel(struct i915_gem_context *ctx) { return !ctx->file_priv; diff --git a/drivers/gpu/drm/i915/i915_gem_context_types.h b/drivers/gpu/drm/i915/i915_gem_context_types.h index 2bf19730eaa9..63ae8eb21939 100644 --- a/drivers/gpu/drm/i915/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/i915_gem_context_types.h @@ -129,15 +129,6 @@ struct i915_gem_context { struct list_head active_engines; struct mutex mutex; - /** - * @user_handle: userspace identifier - * - * A unique per-file identifier is generated from - * &drm_i915_file_private.contexts. - */ - u32 user_handle; -#define DEFAULT_CONTEXT_HANDLE 0 - struct i915_sched_attr sched; /** hw_contexts: per-engine logical HW state */ diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 26bac517e383..a9557f92756f 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -454,8 +454,8 @@ static void error_print_context(struct drm_i915_error_state_buf *m, const char *header, const struct drm_i915_error_context *ctx) { - err_printf(m, "%s%s[%d] user_handle %d hw_id %d, prio %d, guilty %d active %d\n", - header, ctx->comm, ctx->pid, ctx->handle, ctx->hw_id, + err_printf(m, "%s%s[%d] hw_id %d, prio %d, guilty %d active %d\n", + header, ctx->comm, ctx->pid, ctx->hw_id, ctx->sched_attr.priority, ctx->guilty, ctx->active); } @@ -758,11 +758,9 @@ static void __err_print_to_sgl(struct drm_i915_error_state_buf *m, if (obj) { err_puts(m, m->i915->engine[i]->name); if (ee->context.pid) - err_printf(m, " (submitted by %s [%d], ctx %d [%d])", + err_printf(m, " (submitted by %s [%d])", ee->context.comm, - ee->context.pid, - ee->context.handle, - ee->context.hw_id); + ee->context.pid); err_printf(m, " --- gtt_offset = 0x%08x %08x\n", upper_32_bits(obj->gtt_offset), lower_32_bits(obj->gtt_offset)); @@ -1330,7 +1328,6 @@ static void record_context(struct drm_i915_error_context *e, rcu_read_unlock(); } - e->handle = ctx->user_handle; e->hw_id = ctx->hw_id; e->sched_attr = ctx->sched; e->guilty = atomic_read(&ctx->guilty_count); diff --git a/drivers/gpu/drm/i915/i915_gpu_error.h b/drivers/gpu/drm/i915/i915_gpu_error.h index 99d6b7b270c2..302a14240b45 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.h +++ b/drivers/gpu/drm/i915/i915_gpu_error.h @@ -116,7 +116,6 @@ struct i915_gpu_state { struct drm_i915_error_context { char comm[TASK_COMM_LEN]; pid_t pid; - u32 handle; u32 hw_id; int active; int guilty; diff --git a/drivers/gpu/drm/i915/selftests/mock_context.c b/drivers/gpu/drm/i915/selftests/mock_context.c index ad3875b01722..bc14e9aec274 100644 --- a/drivers/gpu/drm/i915/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/selftests/mock_context.c @@ -98,7 +98,7 @@ live_context(struct drm_i915_private *i915, struct drm_file *file) return ctx; err = gem_context_register(ctx, file->driver_priv); - if (err) + if (err < 0) goto err_ctx; return ctx; -- 2.30.2