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ANDROID: vendor_hooks: Add hooks for oem percpu-rwsem optimaton

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Recently we have discovered many lag issues caused by percpu_rwsem
lock-holding tasks not being scheduled for a long time. we need to
identify them and provide appropriate scheduling protection in our
oem scheduler.
To support this, we add one hook below:
    trace_android_vh_percpu_rwsem_wq_add

Bug: 301066838
Change-Id: Id770c1a7978842abfc62d3fa9aeb5ac7a1904972
Signed-off-by: xieliujie <xieliujie@oppo.com>
(cherry picked from commit f451f4a59950135ea9a6ede218c58f10dbb3abaa)
This commit is contained in:
xieliujie
2023-09-26 10:26:32 +08:00
parent 180ea0f6d4
commit d3961f624b
3 changed files with 8 additions and 0 deletions
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drivers/android/vendor_hooks.c
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@@ -106,6 +106,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_binder_wakeup_ilocked);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_do_send_sig_info);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_process_killed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_killed_process);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_percpu_rwsem_wq_add);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_init);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_wake);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_write_finished);