From 72e71a82d6986b2259168575b1cea7fb78f9da32 Mon Sep 17 00:00:00 2001 From: Shashank Sharma Date: Wed, 29 Jul 2020 16:39:39 +0530 Subject: drm/amdgpu: add new trace event for page table update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds a new trace event to track the PTE update events. This specific event will provide information like: - start and end of virtual memory mapping - HW engine flags for the map - physical address for mapping This will be particularly useful for memory profiling tools (like RMV) which are monitoring the page table update events. V2: Added physical address lookup logic in trace point V3: switch to use __dynamic_array added nptes int the TPprint arguments list added page size in the arg list V4: Addressed Christian's review comments add start/end instead of seg use incr instead of page_sz to be accurate V5: Addressed Christian's review comments: add pid and vm context information in the event V6: Re-sequence the variables (put pid and ctx_id first) Cc: Christian König Cc: Alex Deucher Signed-off-by: Christian König Signed-off-by: Shashank Sharma Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 420931d36732..a4efc903349e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1513,19 +1513,26 @@ static int amdgpu_vm_update_ptes(struct amdgpu_vm_update_params *params, entry_end = min(entry_end, end); do { + struct amdgpu_vm *vm = params->vm; uint64_t upd_end = min(entry_end, frag_end); unsigned nptes = (upd_end - frag_start) >> shift; + uint64_t upd_flags = flags | AMDGPU_PTE_FRAG(frag); /* This can happen when we set higher level PDs to * silent to stop fault floods. */ nptes = max(nptes, 1u); + + trace_amdgpu_vm_update_ptes(params, frag_start, upd_end, + nptes, dst, incr, upd_flags, + vm->task_info.pid, + vm->immediate.fence_context); amdgpu_vm_update_flags(params, pt, cursor.level, pe_start, dst, nptes, incr, - flags | AMDGPU_PTE_FRAG(frag)); + upd_flags); pe_start += nptes * 8; - dst += (uint64_t)nptes * AMDGPU_GPU_PAGE_SIZE << shift; + dst += nptes * incr; frag_start = upd_end; if (frag_start >= frag_end) { -- cgit v1.2.3