From 8ef4665aa129a14f3733efc651c53a3c6c47b500 Mon Sep 17 00:00:00 2001 From: Sherry Yang Date: Thu, 31 Aug 2017 11:56:36 -0700 Subject: android: binder: Add page usage in binder stats Add the number of active, lru, and free pages for each binder process in binder stats Signed-off-by: Sherry Yang Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder_alloc.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers/android/binder_alloc.c') diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 2624a502fcde..8fe165844e47 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -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 -- cgit v1.2.3