Carlos Llamas 97830f3c30 binder: signal epoll threads of self-work ... In (e)poll mode, threads often depend on I/O events to determine when data is ready for consumption. Within binder, a thread may initiate a command via BINDER_WRITE_READ without a read buffer and then make use of epoll_wait() or similar to consume any responses afterwards. It is then crucial that epoll threads are signaled via wakeup when they queue their own work. Otherwise, they risk waiting indefinitely for an event leaving their work unhandled. What is worse, subsequent commands won't trigger a wakeup either as the thread has pending work. Fixes: 457b9a6f09 ("Staging: android: add binder driver") Cc: Arve Hjønnevåg <arve@android.com> Cc: Martijn Coenen <maco@android.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Steven Moreland <smoreland@google.com> Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20240131215347.1808751-1-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-31 14:08:28 -08:00
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binder_alloc_selftest.c	android: binder: fix a kernel-doc enum warning	2023-12-06 08:48:26 +09:00
binder_alloc.c	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
binder_alloc.h	binder: switch alloc->mutex to spinlock_t	2023-12-05 09:23:41 +09:00
binder_internal.h	Binder: Add async from to transaction record	2023-05-13 20:38:12 +09:00
binder_trace.h	binder: keep vma addresses type as unsigned long	2023-12-05 09:23:38 +09:00
binder.c	binder: signal epoll threads of self-work	2024-01-31 14:08:28 -08:00
binderfs.c	android: removed duplicate linux/errno	2024-01-07 09:48:26 +01:00
Kconfig	remove CONFIG_ANDROID	2022-07-01 10:41:09 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00