From: Oded Gabbay <oded.gabbay@gmail.com>
To: linux-kernel@vger.kernel.org, oshpigelman@habana.ai,
ttayar@habana.ai, gregkh@linuxfoundation.org
Subject: [PATCH v2 1/7] habanalabs: add handle field to context structure
Date: Tue, 30 Jul 2019 12:47:18 +0300 [thread overview]
Message-ID: <20190730094724.18691-2-oded.gabbay@gmail.com> (raw)
In-Reply-To: <20190730094724.18691-1-oded.gabbay@gmail.com>
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>
---
drivers/misc/habanalabs/context.c | 27 ++++++++++++++++-----------
drivers/misc/habanalabs/habanalabs.h | 2 ++
2 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/drivers/misc/habanalabs/context.c b/drivers/misc/habanalabs/context.c
index 8682590e3f6e..1d8390418234 100644
--- a/drivers/misc/habanalabs/context.c
+++ b/drivers/misc/habanalabs/context.c
@@ -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:
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index 57183ae9b95d..e41800e68578 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -631,6 +631,7 @@ 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);
@@ -652,6 +653,7 @@ struct hl_ctx {
atomic_t thread_ctx_switch_token;
u32 thread_ctx_switch_wait_token;
u32 asid;
+ u32 handle;
};
/**
--
2.17.1
next prev parent reply other threads:[~2019-07-30 9:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 9:47 [PATCH v2 0/7] habanalabs: support info queries by multiple processes Oded Gabbay
2019-07-30 9:47 ` Oded Gabbay [this message]
2019-07-30 9:47 ` [PATCH v2 2/7] habanalabs: kill user process after CS rollback Oded Gabbay
2019-07-30 9:47 ` [PATCH v2 3/7] habanalabs: show the process context dram usage Oded Gabbay
2019-07-30 9:47 ` [PATCH v2 4/7] habanalabs: rename user_ctx as compute_ctx Oded Gabbay
2019-07-30 9:47 ` [PATCH v2 5/7] habanalabs: maintain a list of file private data objects Oded Gabbay
2019-07-30 9:47 ` [PATCH v2 6/7] habanalabs: change device_setup_cdev() to be more generic Oded Gabbay
2019-07-30 9:47 ` [PATCH v2 7/7] habanalabs: create two char devices per ASIC Oded Gabbay
2019-07-30 10:42 ` Greg KH
2019-07-30 11:23 ` Oded Gabbay
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