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drm/ttm: add a debugfs file for the global page pools

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Instead of printing this on the per device pool.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/414956/
This commit is contained in:
Christian König 2020-11-17 16:28:30 +01:00
parent 3763d635de
commit ba051901d1
1 changed files with 50 additions and 20 deletions
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70
drivers/gpu/drm/ttm/ttm_pool.c
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@ -42,6 +42,8 @@
#include <drm/ttm/ttm_bo_driver.h> #include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_tt.h> #include <drm/ttm/ttm_tt.h>
#include "ttm_module.h"
/** /**
* struct ttm_pool_dma - Helper object for coherent DMA mappings * struct ttm_pool_dma - Helper object for coherent DMA mappings
* *
@ -543,6 +545,17 @@ static unsigned int ttm_pool_type_count(struct ttm_pool_type *pt)
return count; return count;
} }
/* Print a nice header for the order */
static void ttm_pool_debugfs_header(struct seq_file *m)
{
unsigned int i;
seq_puts(m, "\t ");
for (i = 0; i < MAX_ORDER; ++i)
seq_printf(m, " ---%2u---", i);
seq_puts(m, "\n");
}
/* Dump information about the different pool types */ /* Dump information about the different pool types */
static void ttm_pool_debugfs_orders(struct ttm_pool_type *pt, static void ttm_pool_debugfs_orders(struct ttm_pool_type *pt,
struct seq_file *m) struct seq_file *m)
@ -554,6 +567,35 @@ static void ttm_pool_debugfs_orders(struct ttm_pool_type *pt,
seq_puts(m, "\n"); seq_puts(m, "\n");
} }
/* Dump the total amount of allocated pages */
static void ttm_pool_debugfs_footer(struct seq_file *m)
{
seq_printf(m, "\ntotal\t: %8lu of %8lu\n",
atomic_long_read(&allocated_pages), page_pool_size);
}
/* Dump the information for the global pools */
static int ttm_pool_debugfs_globals_show(struct seq_file *m, void *data)
{
ttm_pool_debugfs_header(m);
spin_lock(&shrinker_lock);
seq_puts(m, "wc\t:");
ttm_pool_debugfs_orders(global_write_combined, m);
seq_puts(m, "uc\t:");
ttm_pool_debugfs_orders(global_uncached, m);
seq_puts(m, "wc 32\t:");
ttm_pool_debugfs_orders(global_dma32_write_combined, m);
seq_puts(m, "uc 32\t:");
ttm_pool_debugfs_orders(global_dma32_uncached, m);
spin_unlock(&shrinker_lock);
ttm_pool_debugfs_footer(m);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ttm_pool_debugfs_globals);
/** /**
* ttm_pool_debugfs - Debugfs dump function for a pool * ttm_pool_debugfs - Debugfs dump function for a pool
* *
@ -566,23 +608,9 @@ int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m)
{ {
unsigned int i; unsigned int i;
ttm_pool_debugfs_header(m);
spin_lock(&shrinker_lock); spin_lock(&shrinker_lock);
seq_puts(m, "\t ");
for (i = 0; i < MAX_ORDER; ++i)
seq_printf(m, " ---%2u---", i);
seq_puts(m, "\n");
seq_puts(m, "wc\t:");
ttm_pool_debugfs_orders(global_write_combined, m);
seq_puts(m, "uc\t:");
ttm_pool_debugfs_orders(global_uncached, m);
seq_puts(m, "wc 32\t:");
ttm_pool_debugfs_orders(global_dma32_write_combined, m);
seq_puts(m, "uc 32\t:");
ttm_pool_debugfs_orders(global_dma32_uncached, m);
for (i = 0; i < TTM_NUM_CACHING_TYPES; ++i) { for (i = 0; i < TTM_NUM_CACHING_TYPES; ++i) {
seq_puts(m, "DMA "); seq_puts(m, "DMA ");
switch (i) { switch (i) {
@ -598,12 +626,9 @@ int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m)
} }
ttm_pool_debugfs_orders(pool->caching[i].orders, m); ttm_pool_debugfs_orders(pool->caching[i].orders, m);
} }
seq_printf(m, "\ntotal\t: %8lu of %8lu\n",
atomic_long_read(&allocated_pages), page_pool_size);
spin_unlock(&shrinker_lock); spin_unlock(&shrinker_lock);
ttm_pool_debugfs_footer(m);
return 0; return 0;
} }
EXPORT_SYMBOL(ttm_pool_debugfs); EXPORT_SYMBOL(ttm_pool_debugfs);
@ -660,6 +685,11 @@ int ttm_pool_mgr_init(unsigned long num_pages)
ttm_uncached, i); ttm_uncached, i);
} }
#ifdef CONFIG_DEBUG_FS
debugfs_create_file("page_pool", 0444, ttm_debugfs_root, NULL,
&ttm_pool_debugfs_globals_fops);
#endif
mm_shrinker.count_objects = ttm_pool_shrinker_count; mm_shrinker.count_objects = ttm_pool_shrinker_count;
mm_shrinker.scan_objects = ttm_pool_shrinker_scan; mm_shrinker.scan_objects = ttm_pool_shrinker_scan;
mm_shrinker.seeks = 1; mm_shrinker.seeks = 1;