linux-kernel - [PATCH v3 0/3] Binder: Enable App Freezing Capability

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210316011630.1121213-1-dualli@chromium.org>
Date:   Mon, 15 Mar 2021 18:16:27 -0700
From:   Li Li <dualli@...omium.org>
To:     dualli@...gle.com, tkjos@...gle.com, gregkh@...uxfoundation.org,
        christian@...uner.io, arve@...roid.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, maco@...gle.com, hridya@...gle.com,
        surenb@...gle.com
Cc:     joel@...lfernandes.org, kernel-team@...roid.com
Subject: [PATCH v3 0/3] Binder: Enable App Freezing Capability

From: Li Li <dualli@...gle.com>

To improve the user experience when switching between recently used
applications, the background applications which are not currently needed
are cached in the memory. Normally, a well designed application will not
consume valuable CPU resources in the background. However, it's possible
some applications are not able or willing to behave as expected, wasting
energy even after being cached.

It is a good idea to freeze those applications when they're only being
kept alive for the sake of faster startup and energy saving. These kernel
patches will provide the necessary infrastructure for user space framework
to freeze and thaw a cached process, check the current freezing status and
correctly deal with outstanding binder transactions to frozen processes.

Changes in v2: avoid panic by using pr_warn for unexpected cases.
Changes in v3: improved errcode logic in binder_proc_transaction().

Marco Ballesio (3):
  binder: BINDER_FREEZE ioctl
  binder: use EINTR for interrupted wait for work
  binder: BINDER_GET_FROZEN_INFO ioctl

 drivers/android/binder.c            | 198 ++++++++++++++++++++++++++--
 drivers/android/binder_internal.h   |  18 +++
 include/uapi/linux/android/binder.h |  20 +++
 3 files changed, 224 insertions(+), 12 deletions(-)

-- 
2.31.0.rc2.261.g7f71774620-goog