The heap statistics have been removed and currently even basics statistics
are missing.
This patch creates per heap debugfs directory /sys/kernel/debug/<heap_name>
and adds two counters - the number of allocated buffers and number of
allocated bytes.
Signed-off-by: Alexey Skidanov <alexey.skida...@intel.com>
---
drivers/staging/android/ion/ion.c | 40 +++++++++++++++++++++++++++++++--------
drivers/staging/android/ion/ion.h | 3 ++-
2 files changed, 34 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/android/ion/ion.c
b/drivers/staging/android/ion/ion.c
index 9907332..62335b9 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -95,6 +95,9 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap
*heap,
goto err1;
}
+ heap->num_of_buffers++;
+ heap->num_of_alloc_bytes += len;
+
INIT_LIST_HEAD(&buffer->attachments);
mutex_init(&buffer->lock);
mutex_lock(&dev->buffer_lock);
@@ -528,6 +531,8 @@ void ion_device_add_heap(struct ion_heap *heap)
{
struct ion_device *dev = internal_dev;
int ret;
+ struct dentry *heap_root;
+ char debug_name[64];
if (!heap->ops->allocate || !heap->ops->free)
pr_err("%s: can not add heap with invalid ops struct.\n",
@@ -546,6 +551,33 @@ void ion_device_add_heap(struct ion_heap *heap)
}
heap->dev = dev;
+ heap->num_of_buffers = 0;
+ heap->num_of_alloc_bytes = 0;
+
+ /* Create heap root directory. If creation is failed, we may continue */
+ heap_root = debugfs_create_dir(heap->name, dev->debug_root);
+ if (!IS_ERR_OR_NULL(heap_root)) {
+ debugfs_create_u64("num_of_buffers",
+ 0444, heap_root,
+ &heap->num_of_buffers);
+ debugfs_create_u64("num_of_alloc_bytes",
+ 0444,
+ heap_root,
+ &heap->num_of_alloc_bytes);
+
+ if (heap->shrinker.count_objects &&
+ heap->shrinker.scan_objects) {
+ snprintf(debug_name, 64, "%s_shrink", heap->name);
+ debugfs_create_file(debug_name,
+ 0644,
+ heap_root,
+ heap,
+ &debug_shrink_fops);
+ }
+ } else {
+ pr_err("%s: Failed to create heap dir in debugfs\n", __func__);
+ }
+
down_write(&dev->lock);
heap->id = heap_id++;
/*
@@ -555,14 +587,6 @@ void ion_device_add_heap(struct ion_heap *heap)
plist_node_init(&heap->node, -heap->id);
plist_add(&heap->node, &dev->heaps);
- if (heap->shrinker.count_objects && heap->shrinker.scan_objects) {
- char debug_name[64];
-
- snprintf(debug_name, 64, "%s_shrink", heap->name);
- debugfs_create_file(debug_name, 0644, dev->debug_root,
- heap, &debug_shrink_fops);
- }
-
dev->heap_cnt++;
up_write(&dev->lock);
}
diff --git a/drivers/staging/android/ion/ion.h
b/drivers/staging/android/ion/ion.h
index 16cbd38..8f1326a 100644
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -179,9 +179,10 @@ struct ion_heap {
spinlock_t free_lock;
wait_queue_head_t waitqueue;
struct task_struct *task;
-
int (*debug_show)(struct ion_heap *heap, struct seq_file *s,
void *unused);
+ u64 num_of_buffers;
+ u64 num_of_alloc_bytes;
};
/**
--
2.7.4
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