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| author | Matthew Brost <matthew.brost@intel.com> | 2024-08-01 08:41:18 -0700 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2024-08-01 11:00:14 -0700 |
| commit | 4f04d07c0a94b0b30db839e44f1b8364a1b508ac (patch) | |
| tree | fe60010678240176b646168b77de038368d351db /tools/perf/scripts/python/flamegraph.py | |
| parent | drm/printer: Allow NULL data in devcoredump printer (diff) | |
| download | linux-4f04d07c0a94b0b30db839e44f1b8364a1b508ac.tar.gz linux-4f04d07c0a94b0b30db839e44f1b8364a1b508ac.zip | |
drm/xe: Faster devcoredump
The current algorithm to read out devcoredump is O(N*N) where N is the
size of coredump due to usage of the drm_coredump_printer in
xe_devcoredump_read. Switch to a O(N) algorithm which prints the
devcoredump into a readable format in snapshot work and update
xe_devcoredump_read to memcpy from the readable format directly.
v2:
- Fix double free on devcoredump removal (Testing)
- Set read_data_size after snap work flush
- Adjust remaining in iterator upon realloc (Testing)
- Set read_data upon realloc (Testing)
v3:
- Kernel doc
v4:
- Two pass algorithm to determine size (Maarten)
v5:
- Use scope for reading variables (Johnathan)
Reported-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2408
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240801154118.2547543-4-matthew.brost@intel.com
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
0 files changed, 0 insertions, 0 deletions