bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: add new trace event for page table update

Browse Source 
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 <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Shashank Sharma
2020-07-29 16:39:39 +05:30
committed by Alex Deucher
parent 125b1deb60
commit 72e71a82d6
2 changed files with 52 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h
View File

@@ -321,6 +321,49 @@ DEFINE_EVENT(amdgpu_vm_mapping, amdgpu_vm_bo_cs,
TP_ARGS(mapping)
);
TRACE_EVENT(amdgpu_vm_update_ptes,
TP_PROTO(struct amdgpu_vm_update_params *p,
uint64_t start, uint64_t end,
unsigned int nptes, uint64_t dst,
uint64_t incr, uint64_t flags,
pid_t pid, uint64_t vm_ctx),
TP_ARGS(p, start, end, nptes, dst, incr, flags, pid, vm_ctx),
TP_STRUCT__entry(
__field(u64, start)
__field(u64, end)
__field(u64, flags)
__field(unsigned int, nptes)
__field(u64, incr)
__field(pid_t, pid)
__field(u64, vm_ctx)
__dynamic_array(u64, dst, nptes)
),
TP_fast_assign(
unsigned int i;
__entry->start = start;
__entry->end = end;
__entry->flags = flags;
__entry->incr = incr;
__entry->nptes = nptes;
__entry->pid = pid;
__entry->vm_ctx = vm_ctx;
for (i = 0; i < nptes; ++i) {
u64 addr = p->pages_addr ? amdgpu_vm_map_gart(
p->pages_addr, dst) : dst;
((u64 *)__get_dynamic_array(dst))[i] = addr;
dst += incr;
}
),
TP_printk("pid:%u vm_ctx:0x%llx start:0x%010llx end:0x%010llx,"
" flags:0x%llx, incr:%llu, dst:\n%s", __entry->pid,
__entry->vm_ctx, __entry->start, __entry->end,
__entry->flags, __entry->incr, __print_array(
__get_dynamic_array(dst), __entry->nptes, 8))
);
TRACE_EVENT(amdgpu_vm_set_ptes,
TP_PROTO(uint64_t pe, uint64_t addr, unsigned count,
uint32_t incr, uint64_t flags, bool direct),