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ANDROID: vendor_hooks: Add hooks for binder

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We want to add some hooks in the binder module so that we can reduce
block time until binder thread is available
Here are what new hooks do for:
1、android_vh_binder_looper_state_registered: choose a binder thread(do proc work) as a low-level thread.Only this thread has power to excute background binder transaction.
2、android_vh_binder_thread_read: let binder thread do works which come from
our list.
3、android_vh_binder_free_proc: free some pointers and variable.
4、android_vh_binder_thread_release: free the list that we create before.
5、android_vh_binder_has_work_ilocked: to check if our list has work.
6、android_vh_binder_read_done: because of we add hook in binder_has_work_ilocked,
binder_has_work_ilocked may return true, so we try to wake up low-level thread immediately.

Bug: 212483521
Change-Id: Ic40f452cc4dcf8fc85422e23e6f1a7ad77547309
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
This commit is contained in:
Liujie Xie
2021-12-29 10:16:50 +08:00
committed by Todd Kjos
parent e99926fdfa
commit 05c23b7a50
3 changed files with 35 additions and 1 deletions
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6
drivers/android/vendor_hooks.c
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@@ -402,3 +402,9 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_css_online);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_free);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_alloc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_subpage_dma_contig_alloc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_looper_state_registered);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_thread_read);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_free_proc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_thread_release);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_has_work_ilocked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_read_done);