Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751913AbdH3ArP (ORCPT ); Tue, 29 Aug 2017 20:47:15 -0400 Received: from mail-pg0-f53.google.com ([74.125.83.53]:34649 "EHLO mail-pg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751862AbdH3ArN (ORCPT ); Tue, 29 Aug 2017 20:47:13 -0400 From: Sherry Yang To: linux-kernel@vger.kernel.org Cc: tkjos@google.com, maco@google.com, Sherry Yang , Greg Kroah-Hartman , =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Riley Andrews , devel@driverdev.osuosl.org (open list:ANDROID DRIVERS) Subject: [PATCH v3 1/6] android: binder: Refactor prev and next buffer into a helper function Date: Tue, 29 Aug 2017 17:46:57 -0700 Message-Id: <20170830004702.120371-2-sherryy@android.com> X-Mailer: git-send-email 2.14.1.342.g6490525c54-goog In-Reply-To: <20170830004702.120371-1-sherryy@android.com> References: <20170830004702.120371-1-sherryy@android.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2995 Lines: 79 Use helper functions buffer_next and buffer_prev instead of list_entry to get the next and previous buffers. Signed-off-by: Sherry Yang --- drivers/android/binder_alloc.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 40f31df60580..f15af2b55a62 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -48,14 +48,23 @@ module_param_named(debug_mask, binder_alloc_debug_mask, pr_info(x); \ } while (0) +static struct binder_buffer *binder_buffer_next(struct binder_buffer *buffer) +{ + return list_entry(buffer->entry.next, struct binder_buffer, entry); +} + +static struct binder_buffer *binder_buffer_prev(struct binder_buffer *buffer) +{ + return list_entry(buffer->entry.prev, struct binder_buffer, entry); +} + static size_t binder_alloc_buffer_size(struct binder_alloc *alloc, struct binder_buffer *buffer) { if (list_is_last(&buffer->entry, &alloc->buffers)) return alloc->buffer + alloc->buffer_size - (void *)buffer->data; - return (size_t)list_entry(buffer->entry.next, - struct binder_buffer, entry) - (size_t)buffer->data; + return (size_t)binder_buffer_next(buffer) - (size_t)buffer->data; } static void binder_insert_free_buffer(struct binder_alloc *alloc, @@ -470,7 +479,7 @@ static void binder_delete_free_buffer(struct binder_alloc *alloc, int free_page_start = 1; BUG_ON(alloc->buffers.next == &buffer->entry); - prev = list_entry(buffer->entry.prev, struct binder_buffer, entry); + prev = binder_buffer_prev(buffer); BUG_ON(!prev->free); if (buffer_end_page(prev) == buffer_start_page(buffer)) { free_page_start = 0; @@ -482,8 +491,7 @@ static void binder_delete_free_buffer(struct binder_alloc *alloc, } if (!list_is_last(&buffer->entry, &alloc->buffers)) { - next = list_entry(buffer->entry.next, - struct binder_buffer, entry); + next = binder_buffer_next(buffer); if (buffer_start_page(next) == buffer_end_page(buffer)) { free_page_end = 0; if (buffer_start_page(next) == @@ -544,8 +552,7 @@ static void binder_free_buf_locked(struct binder_alloc *alloc, rb_erase(&buffer->rb_node, &alloc->allocated_buffers); buffer->free = 1; if (!list_is_last(&buffer->entry, &alloc->buffers)) { - struct binder_buffer *next = list_entry(buffer->entry.next, - struct binder_buffer, entry); + struct binder_buffer *next = binder_buffer_next(buffer); if (next->free) { rb_erase(&next->rb_node, &alloc->free_buffers); @@ -553,8 +560,7 @@ static void binder_free_buf_locked(struct binder_alloc *alloc, } } if (alloc->buffers.next != &buffer->entry) { - struct binder_buffer *prev = list_entry(buffer->entry.prev, - struct binder_buffer, entry); + struct binder_buffer *prev = binder_buffer_prev(buffer); if (prev->free) { binder_delete_free_buffer(alloc, buffer); -- 2.14.1.342.g6490525c54-goog