mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/
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49bd54b390
We soon want to start answering questions like how much GPU time is the context belonging to a client which exited still using. To enable this we start tracking all context belonging to a client on a separate list. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-5-tvrtko.ursulin@linux.intel.com
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2020 Intel Corporation
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include "i915_drm_client.h"
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#include "i915_gem.h"
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#include "i915_utils.h"
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void i915_drm_clients_init(struct i915_drm_clients *clients,
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struct drm_i915_private *i915)
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{
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clients->i915 = i915;
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clients->next_id = 0;
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xa_init_flags(&clients->xarray, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ);
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}
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struct i915_drm_client *i915_drm_client_add(struct i915_drm_clients *clients)
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{
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struct i915_drm_client *client;
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struct xarray *xa = &clients->xarray;
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int ret;
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client = kzalloc(sizeof(*client), GFP_KERNEL);
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if (!client)
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return ERR_PTR(-ENOMEM);
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xa_lock_irq(xa);
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ret = __xa_alloc_cyclic(xa, &client->id, client, xa_limit_32b,
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&clients->next_id, GFP_KERNEL);
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xa_unlock_irq(xa);
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if (ret < 0)
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goto err;
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kref_init(&client->kref);
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spin_lock_init(&client->ctx_lock);
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INIT_LIST_HEAD(&client->ctx_list);
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client->clients = clients;
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return client;
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err:
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kfree(client);
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return ERR_PTR(ret);
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}
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void __i915_drm_client_free(struct kref *kref)
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{
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struct i915_drm_client *client =
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container_of(kref, typeof(*client), kref);
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struct xarray *xa = &client->clients->xarray;
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unsigned long flags;
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xa_lock_irqsave(xa, flags);
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__xa_erase(xa, client->id);
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xa_unlock_irqrestore(xa, flags);
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kfree(client);
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}
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void i915_drm_clients_fini(struct i915_drm_clients *clients)
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{
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GEM_BUG_ON(!xa_empty(&clients->xarray));
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xa_destroy(&clients->xarray);
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}
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