Messages in this thread | | | Date | Thu, 2 Nov 2023 18:59:01 +0000 | Subject | [PATCH 00/21] binder: convert alloc->mutex to spinlock | From | Carlos Llamas <> |
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This series refactors the binder buffer allocation space to be able to convert the alloc->mutex into a spinlock. Doing so decreases the latency of binder transactions seen under worst-case scenarios.
I attempted to organize and improve readability of things that were touched during this process. I also include a couple of fixes (unrelated to the lock convertion) for issues I found along the way.
Regards, Carlos Llamas
Cc: Todd Kjos <tkjos@google.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: John Stultz <jstultz@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Tim Murray <timmurray@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Carlos Llamas (21): binder: use EPOLLERR from eventpoll.h binder: fix use-after-free in shinker's callback binder: fix race between mmput() and do_exit() binder: fix async space check for 0-sized buffers binder: fix trivial typo of binder_free_buf_locked() binder: fix comment on binder_alloc_new_buf() return value binder: remove extern from function prototypes binder: keep vma addresses type as unsigned long binder: split up binder_update_page_range() binder: do unlocked work in binder_alloc_new_buf() binder: remove pid param in binder_alloc_new_buf() binder: separate the no-space debugging logic binder: relocate low space calculation binder: do not add pages to LRU in release path binder: relocate binder_alloc_clear_buf() binder: refactor page range allocation binder: malloc new_buffer outside of locks binder: initialize lru pages in mmap callback binder: perform page allocation outside of locks binder: reverse locking order in shrinker callback binder: switch alloc->mutex to spinlock_t
drivers/android/binder.c | 25 +- drivers/android/binder_alloc.c | 746 ++++++++++++------------ drivers/android/binder_alloc.h | 57 +- drivers/android/binder_alloc_selftest.c | 8 +- drivers/android/binder_trace.h | 2 +- 5 files changed, 428 insertions(+), 410 deletions(-)
base-commit: 21e80f3841c01aeaf32d7aee7bbc87b3db1aa0c6 -- 2.42.0.869.gea05f2083d-goog
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