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Commit 91004426 authored by Sherry Yang's avatar Sherry Yang Committed by Mengjiao Yang
Browse files

FROMLIST: android: binder: Add page usage in binder stats 

(from https://patchwork.kernel.org/patch/9928611/

)

Add the number of active, lru, and free pages for
each binder process in binder stats

Bug: 63926541
Change-Id: I12618e4eb8ecc08f4f05fe4cba454a88830897f9
Signed-off-by: default avatarSherry Yang <sherryy@android.com>
parent 4a61ba65

drivers/android/binder.c

+2 −0
Original line number Diff line number Diff line
@@ -5426,6 +5426,8 @@ static void print_binder_proc_stats(struct seq_file *m, 
	count = binder_alloc_get_allocated_count(&proc->alloc);

	seq_printf(m, "  buffers: %d\n", count);



	binder_alloc_print_pages(m, &proc->alloc);



	count = 0;

	binder_inner_proc_lock(proc);

	list_for_each_entry(w, &proc->todo, entry) {

drivers/android/binder_alloc.c

+28 −0
Original line number Diff line number Diff line
@@ -831,6 +831,34 @@ void binder_alloc_print_allocated(struct seq_file *m, 
	mutex_unlock(&alloc->mutex);

}



/**

 * binder_alloc_print_pages() - print page usage

 * @m:     seq_file for output via seq_printf()

 * @alloc: binder_alloc for this proc

 */

void binder_alloc_print_pages(struct seq_file *m,

			      struct binder_alloc *alloc)

{

	struct binder_lru_page *page;

	int i;

	int active = 0;

	int lru = 0;

	int free = 0;



	mutex_lock(&alloc->mutex);

	for (i = 0; i < alloc->buffer_size / PAGE_SIZE; i++) {

		page = &alloc->pages[i];

		if (!page->page_ptr)

			free++;

		else if (list_empty(&page->lru))

			active++;

		else

			lru++;

	}

	mutex_unlock(&alloc->mutex);

	seq_printf(m, "  pages: %d:%d:%d\n", active, lru, free);

}



/**

 * binder_alloc_get_allocated_count() - return count of buffers

 * @alloc: binder_alloc for this proc

drivers/android/binder_alloc.h

+2 −0
Original line number Diff line number Diff line
@@ -142,6 +142,8 @@ extern void binder_alloc_deferred_release(struct binder_alloc *alloc); 
extern int binder_alloc_get_allocated_count(struct binder_alloc *alloc);

extern void binder_alloc_print_allocated(struct seq_file *m,

					 struct binder_alloc *alloc);

void binder_alloc_print_pages(struct seq_file *m,

			      struct binder_alloc *alloc);



/**

 * binder_alloc_get_free_async_space() - get free space available for async