admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/xe/uapi: restrict system wide accounting

Browse Source 
Since this is considered an info leak (system wide accounting), rather
hide behind perfmon_capable().

v2:
  - Without perfmon_capable() it likely makes more sense to report as zero,
    instead of reporting as used == total size. This should give similar
    behaviour as i915 which rather tracks free instead of used.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Filip Hazubski <filip.hazubski@intel.com>
Cc: Carl Zhang <carl.zhang@intel.com>
Cc: Effie Yu <effie.yu@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Matthew Auld
2023-03-31 09:46:24 +01:00
committed by Rodrigo Vivi
parent 1bc56a934f
commit 1105ac15d2
1 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/xe/xe_query.c
View File

@@ -128,7 +128,8 @@ static int query_memory_usage(struct xe_device *xe,
usage->regions[0].min_page_size = PAGE_SIZE;
usage->regions[0].max_page_size = PAGE_SIZE;
usage->regions[0].total_size = man->size << PAGE_SHIFT;
usage->regions[0].used = ttm_resource_manager_usage(man);
if (perfmon_capable())
usage->regions[0].used = ttm_resource_manager_usage(man);
usage->num_regions = 1;
for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) {
@@ -145,8 +146,13 @@ static int query_memory_usage(struct xe_device *xe,
SZ_1G;
usage->regions[usage->num_regions].total_size =
man->size;
usage->regions[usage->num_regions++].used =
ttm_resource_manager_usage(man);
if (perfmon_capable()) {
usage->regions[usage->num_regions].used =
ttm_resource_manager_usage(man);
}
usage->num_regions++;
}
}