445008273d
Frozen tasks can't process binder transactions, so a way is required to inform transmitting ends of communication failures due to the frozen state of their receiving counterparts. Additionally, races are possible between transitions to frozen state and binder transactions enqueued to a specific process. Implement BINDER_FREEZE ioctl for user space to inform the binder driver about the intention to freeze or unfreeze a process. When the ioctl is called, block the caller until any pending binder transactions toward the target process are flushed. Return an error to transactions to processes marked as frozen. Bug: 180989544 (cherry picked from commit 15949c3cdd97bccdcd45c0c0f6c31058520b6494 git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-testing) Co-developed-by: Todd Kjos <tkjos@google.com> Acked-by: Todd Kjos <tkjos@google.com> Signed-off-by: Marco Ballesio <balejs@google.com> Signed-off-by: Todd Kjos <tkjos@google.com> Signed-off-by: Li Li <dualli@google.com> Link: https://lore.kernel.org/r/20210316011630.1121213-2-dualli@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Change-Id: Ia1b5951cd99eeb98b59e06c3e27d59062dc725f6 |
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| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| drm | ||
| dt-bindings | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| vdso | ||
| video | ||
| xen | ||