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80bcbdfc8c
Add a new entry in stats to for svm page faults. If CONFIG_DEBUG_FS is
enabled, the count can be viewed with per GT stat debugfs file.
This is similar to what is already in place for vma page faults.
Example output:
cat /sys/kernel/debug/dri/0/gt0/stats
svm_pagefault_count: 6
tlb_inval_count: 78
vma_pagefault_count: 0
vma_pagefault_kb: 0
v2: Fix build with CONFIG_DRM_GPUSVM disabled
v3: Update argument in kernel doc
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250312092749.164232-1-francois.dugast@intel.com
Signed-off-by: Francois Dugast <francois.dugast@intel.com>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2024 Intel Corporation
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*/
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#include <linux/atomic.h>
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#include <drm/drm_print.h>
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#include "xe_gt.h"
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#include "xe_gt_stats.h"
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/**
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* xe_gt_stats_incr - Increments the specified stats counter
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* @gt: GT structure
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* @id: xe_gt_stats_id type id that needs to be incremented
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* @incr: value to be incremented with
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*
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* Increments the specified stats counter.
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*/
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void xe_gt_stats_incr(struct xe_gt *gt, const enum xe_gt_stats_id id, int incr)
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{
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if (id >= __XE_GT_STATS_NUM_IDS)
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return;
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atomic64_add(incr, >->stats.counters[id]);
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}
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static const char *const stat_description[__XE_GT_STATS_NUM_IDS] = {
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"svm_pagefault_count",
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"tlb_inval_count",
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"vma_pagefault_count",
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"vma_pagefault_kb",
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};
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/**
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* xe_gt_stats_print_info - Print the GT stats
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* @gt: GT structure
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* @p: drm_printer where it will be printed out.
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*
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* This prints out all the available GT stats.
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*/
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int xe_gt_stats_print_info(struct xe_gt *gt, struct drm_printer *p)
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{
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enum xe_gt_stats_id id;
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for (id = 0; id < __XE_GT_STATS_NUM_IDS; ++id)
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drm_printf(p, "%s: %lld\n", stat_description[id],
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atomic64_read(>->stats.counters[id]));
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return 0;
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}
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