drm/xe: Add pagefault chaining stats

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Add GT stats to quantify pagefault chaining behavior during fault storms.

Track total chained faults, faults chained directly from the IRQ
handler, cases where IRQ chaining also drained the queue, chained faults
that had to be requeued due to range mismatch, and cases where the last
serviced range allowed immediate ack.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Link: https://patch.msgid.link/20260806185202.3922432-10-matthew.brost@intel.com

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This commit is contained in:

Matthew Brost 2026-08-06 11:51:59 -07:00

parent f2b4b3f814

commit d67f040466

3 changed files with 38 additions and 2 deletions

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5

drivers/gpu/drm/xe/xe_gt_stats.c

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16

drivers/gpu/drm/xe/xe_gt_stats_types.h

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19

drivers/gpu/drm/xe/xe_pagefault.c

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