Messages in this thread | | | From | Oded Gabbay <> | Subject | [PATCH v2 0/7] habanalabs: support info queries by multiple processes | Date | Tue, 30 Jul 2019 12:47:17 +0300 |
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Today, the driver allows only a single user application (the deep-learning application) to perform queries of the device's stats, information, idle state and more.
This is a serious limitation in data centers, where there are multiple system/monitorining applications that want to continuously retrieve that information, while allowing the deep-learning application to perform work on the device.
This patch-set allows unlimited number of user applications to perform the above queries (by calling the INFO IOCTL), while the deep-learning application is running.
This is done by creating an additional char device per ASIC, that is dedicated to information retrieval only (allows only to call the INFO IOCTL). This method will maintain backward compatibility with existing userspace applications.
- Patches 1-4 makes small improvements to existing code. - Patch 5 removes the accounting of the number of open file-descriptors and replace it with tracking of the driver's internal file private data strcuture. - Patch 6 is a pre-requisite to creating the two char devices - Patch 7 introduce the additional char device
Thanks, Oded
Oded Gabbay (7): habanalabs: add handle field to context structure habanalabs: kill user process after CS rollback habanalabs: show the process context dram usage habanalabs: rename user_ctx as compute_ctx habanalabs: maintain a list of file private data objects habanalabs: change device_setup_cdev() to be more generic habanalabs: create two char devices per ASIC
drivers/misc/habanalabs/context.c | 38 +-- drivers/misc/habanalabs/debugfs.c | 4 +- drivers/misc/habanalabs/device.c | 256 ++++++++++++--------- drivers/misc/habanalabs/goya/goya_hwmgr.c | 11 +- drivers/misc/habanalabs/habanalabs.h | 53 +++-- drivers/misc/habanalabs/habanalabs_drv.c | 125 ++++++---- drivers/misc/habanalabs/habanalabs_ioctl.c | 104 ++++++--- 7 files changed, 374 insertions(+), 217 deletions(-)
-- 2.17.1
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