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habanalabs: add handle field to context structure 

This patch adds a field to the context's structure that will hold a unique
handle for the context.

This will be needed when the user will create the context.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oded Gabbay 2019-07-15 21:55:57 +03:00
parent 30f273222c
commit b888751a02
2 changed files with 18 additions and 11 deletions
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27
drivers/misc/habanalabs/context.c
View File

@ -67,9 +67,20 @@ int hl_ctx_create(struct hl_device *hdev, struct hl_fpriv *hpriv)
goto out_err;
}
mutex_lock(&mgr->ctx_lock);
rc = idr_alloc(&mgr->ctx_handles, ctx, 1, 0, GFP_KERNEL);
mutex_unlock(&mgr->ctx_lock);
if (rc < 0) {
dev_err(hdev->dev, "Failed to allocate IDR for a new CTX\n");
goto free_ctx;
}
ctx->handle = rc;
rc = hl_ctx_init(hdev, ctx, false);
if (rc)
goto free_ctx;
goto remove_from_idr;
hl_hpriv_get(hpriv);
ctx->hpriv = hpriv;
@ -78,18 +89,12 @@ int hl_ctx_create(struct hl_device *hdev, struct hl_fpriv *hpriv)
hpriv->ctx = ctx;
hdev->user_ctx = ctx;
mutex_lock(&mgr->ctx_lock);
rc = idr_alloc(&mgr->ctx_handles, ctx, 1, 0, GFP_KERNEL);
mutex_unlock(&mgr->ctx_lock);
if (rc < 0) {
dev_err(hdev->dev, "Failed to allocate IDR for a new CTX\n");
hl_ctx_free(hdev, ctx);
goto out_err;
}
return 0;
remove_from_idr:
mutex_lock(&mgr->ctx_lock);
idr_remove(&mgr->ctx_handles, ctx->handle);
mutex_unlock(&mgr->ctx_lock);
free_ctx:
kfree(ctx);
out_err:

2
drivers/misc/habanalabs/habanalabs.h
View File

@ -636,6 +636,7 @@ struct hl_va_range {
* execution phase before the context switch phase
* has finished.
* @asid: context's unique address space ID in the device's MMU.
* @handle: context's opaque handle for user
*/
struct hl_ctx {
DECLARE_HASHTABLE(mem_hash, MEM_HASH_TABLE_BITS);
@ -657,6 +658,7 @@ struct hl_ctx {
atomic_t thread_ctx_switch_token;
u32 thread_ctx_switch_wait_token;
u32 asid;
u32 handle;
};
/**