Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751437AbdHaS4t (ORCPT ); Thu, 31 Aug 2017 14:56:49 -0400 Received: from mail-pf0-f171.google.com ([209.85.192.171]:36638 "EHLO mail-pf0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750996AbdHaS4s (ORCPT ); Thu, 31 Aug 2017 14:56:48 -0400 X-Google-Smtp-Source: ADKCNb7iLC3m0JG8iNXzr7SQX4y14nSUII+Za7TLTRc0sfKLx1Gzo2kbySkzA9c76kr7qFQUFzEmqA== From: Sherry Yang To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org Cc: tkjos@google.com, maco@google.com, Sherry Yang , =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Riley Andrews , devel@driverdev.osuosl.org (open list:ANDROID DRIVERS) Subject: [PATCH] android: binder: Add page usage in binder stats Date: Thu, 31 Aug 2017 11:56:36 -0700 Message-Id: <20170831185636.59240-1-sherryy@android.com> X-Mailer: git-send-email 2.14.1.581.gf28d330327-goog In-Reply-To: <20170831184746.GA16515@kroah.com> References: <20170831184746.GA16515@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2530 Lines: 77 Add the number of active, lru, and free pages for each binder process in binder stats Signed-off-by: Sherry Yang --- drivers/android/binder.c | 2 ++ drivers/android/binder_alloc.c | 28 ++++++++++++++++++++++++++++ drivers/android/binder_alloc.h | 2 ++ 3 files changed, 32 insertions(+) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index ba9e613b42d6..56b380292cc5 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -5047,6 +5047,8 @@ 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) { 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 diff --git a/drivers/android/binder_alloc.h b/drivers/android/binder_alloc.h index fa707cc63393..a3a3602c689c 100644 --- a/drivers/android/binder_alloc.h +++ b/drivers/android/binder_alloc.h @@ -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 -- 2.14.1.581.gf28d330327-goog