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Add two new IOCTL APIs to allocate/free pma stream. Add two new functions to handle this : nvgpu_prof_ioctl_alloc_pma_stream() nvgpu_prof_ioctl_free_pma_stream() Allocation of pma stream includes below steps : - Initializing perfbuf VM - Mapping PMA buffer into perfbuf VM - Mapping PMA byte buffer into perfbuf VM - Mapping PMA byte buffer to CPU virtual address space Store all of above data in struct nvgpu_profiler_object for reference. OS specific data is stored in struct nvgpu_profiler_object_priv Update HWPM streamout bind/unbind sequence to enable/disable perfbuf respectively. Also take care of releasing the pma stream resources in profiler object close path if they are not explicitly released by user space by IOCTL call. Bug 2510974 Jira NVGPU-5360 Change-Id: I126633746cabc4e293c7ad7c49806866a897949d Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2406483 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Antony Clince Alex <aalex@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>