openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

habanalabs: add dedicated define for hard reset 

Gaudi requires longer waiting during reset due to closing of network ports.
Add this explanation to the relevant comment in the code and add a
dedicated define for this reset timeout period, instead of multiplying
another define.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Omer Shpigelman 2020-05-09 12:18:01 +03:00 committed by Oded Gabbay
parent 9e5e49cd5b
commit e09498b078
2 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/misc/habanalabs/device.c
View File

@ -1326,11 +1326,12 @@ void hl_device_fini(struct hl_device *hdev)
* This function is competing with the reset function, so try to
* take the reset atomic and if we are already in middle of reset,
* wait until reset function is finished. Reset function is designed
* to always finish (could take up to a few seconds in worst case).
* to always finish. However, in Gaudi, because of all the network
* ports, the hard reset could take between 10-30 seconds
*/
timeout = ktime_add_us(ktime_get(),
HL_PENDING_RESET_PER_SEC * 1000 * 1000 * 4);
HL_HARD_RESET_MAX_TIMEOUT * 1000 * 1000);
rc = atomic_cmpxchg(&hdev->in_reset, 0, 1);
while (rc) {
usleep_range(50, 200);

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

@ -25,6 +25,8 @@
#define HL_PENDING_RESET_PER_SEC 30
#define HL_HARD_RESET_MAX_TIMEOUT 120
#define HL_DEVICE_TIMEOUT_USEC 1000000 /* 1 s */
#define HL_HEARTBEAT_PER_USEC 5000000 /* 5 s */