xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ANDROID: vendor_hooks: Add hooks for binder

Browse Source 
Add hooks to support oem's binder feature of improving binder_thread->task sched priority

1) Check if it is a specific task in trace_android_vh_alloc_oem_binder_struct() and store the flag to t->android_vendor_data1
2) If it is a specific binder task and binder_thread selected, raise the sched priority of binder_thread->task in runqueue.
3) If it is a specific binder task but no binder_thread selected (e.g pending_async or no free threads), insert t->work to the appropriate position in the list.
4) Reset the sched priority when BR_TRANSACTION or BC_FREE_BUFFER.
Some high-priority async binder task reset the sched priority when BC_FREE_BUFFER in trace_android_vh_binder_free_buf().
Some middle-priority async binder task reset the sched priority when driver return server "BR_TRANSACTION" in trace_android_vh_binder_transaction_received().

Bug: 308391339

Change-Id: Iab4939fe4a4881b31961aaa2fef500b51c944743
Signed-off-by: lfc <lfc@oppo.com>
This commit is contained in:
lfc
2023-09-21 14:09:38 +08:00
committed by Fuchun Liao
parent ba88bbf1bb
commit 464ef3ee59
3 changed files with 53 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/android/vendor_hooks.c
View File

@@ -499,6 +499,12 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_madvise_cold_or_pageout_abort);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_compact_finished);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_wakeup_bypass);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_skip_swapcache);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_proc_transaction_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alloc_oem_binder_struct);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_transaction_received);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_free_oem_binder_struct);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_special_task);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_free_buf);
/*
* For type visibility
*/