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01db38f08e
Add support for Serial Id feature which will be used by Nsight for buffer tracking purpose. This feature expects a unique serial id per buffer even if it is shared across multiple client processes. Add following code: - Create a new global counter field for serial id in nvmap device. Initialize it to 0 when nvmap device is initialized. - Introduce a new field for serial_id in nvmap_handle struct. - When nvmap_handle is created, assign it's serial_id field with global counter's value, and increment global counter. - During NvRmMemQueryHandleParameters return this serial_id associated with the handle. - Do not decrement counter for serial_id even after freeing the handle. Bug 4138373 Change-Id: Ic1fe22b082eefb352986f8fa44d4c38d186a366f Signed-off-by: Ketan Patil <ketanp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2918510 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>