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habanalabs: use get_task_pid() to take PID

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The previous function we used, find_get_pid(), wasn't good in case
the user process was run inside docker.

As a result, we didn't had the PID and we couldn't kill the user
process in case the device got stuck and we needed to reset the
device.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Oded Gabbay 2021-07-03 11:50:32 +03:00
parent fbcd0efefc
commit e79e745b20
2 changed files with 6 additions and 2 deletions
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6
drivers/misc/habanalabs/common/device.c
View File

@ -7,11 +7,11 @@
#define pr_fmt(fmt) "habanalabs: " fmt
#include <uapi/misc/habanalabs.h>
#include "habanalabs.h"
#include <linux/pci.h>
#include <linux/hwmon.h>
#include <uapi/misc/habanalabs.h>
enum hl_device_status hl_device_status(struct hl_device *hdev)
{
@ -819,6 +819,10 @@ static int device_kill_open_processes(struct hl_device *hdev, u32 timeout)
usleep_range(1000, 10000);
put_task_struct(task);
} else {
dev_warn(hdev->dev,
"Can't get task struct for PID so giving up on killing process\n");
return -ETIME;
}
}

2
drivers/misc/habanalabs/common/habanalabs_drv.c
View File

@ -141,7 +141,7 @@ int hl_device_open(struct inode *inode, struct file *filp)
hl_cb_mgr_init(&hpriv->cb_mgr);
hl_ctx_mgr_init(&hpriv->ctx_mgr);
hpriv->taskpid = find_get_pid(current->pid);
hpriv->taskpid = get_task_pid(current, PIDTYPE_PID);
mutex_lock(&hdev->fpriv_list_lock);