Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
rust_binder: add `transaction_received` tracepoint
Add Rust Binder `transaction_received` tracepoint decalaration and
wire in the corresponding trace call when a transaction work item is
accepted for execution.
Signed-off-by: Mohamad Alsadhan <mo@sdhn.cc>
Link: https://patch.msgid.link/20260317-rust-binder-trace-v3-4-6fae4fbcf637@sdhn.cc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
authored by
Mohamad Alsadhan
and committed by
Greg Kroah-Hartman
caf3719f
2335167a
+21
+12
drivers/android/binder/rust_binder_events.h
+12
drivers/android/binder/rust_binder_events.h
···
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__entry->reply, __entry->flags, __entry->code)
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);
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+
TRACE_EVENT(binder_transaction_received,
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TP_PROTO(rust_binder_transaction t),
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TP_ARGS(t),
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TP_STRUCT__entry(
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__field(int, debug_id)
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),
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TP_fast_assign(
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__entry->debug_id = rust_binder_transaction_debug_id(t);
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),
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TP_printk("transaction=%d", __entry->debug_id)
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);
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+
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#endif /* _RUST_BINDER_TRACE_H */
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/* This part must be outside protection */
+7
drivers/android/binder/trace.rs
+7
drivers/android/binder/trace.rs
···
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unsafe fn binder_write_done(ret: c_int);
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unsafe fn binder_wait_for_work(proc_work: bool, transaction_stack: bool, thread_todo: bool);
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unsafe fn binder_transaction(reply: bool, t: rust_binder_transaction, thread: *mut task_struct);
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unsafe fn binder_transaction_received(t: rust_binder_transaction);
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}
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#[inline]
···
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// SAFETY: The raw transaction is valid for the duration of this call. The thread pointer is
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// valid or null.
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unsafe { binder_transaction(reply, raw_transaction(t), thread) }
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}
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#[inline]
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pub(crate) fn trace_transaction_received(t: &Transaction) {
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// SAFETY: The raw transaction is valid for the duration of this call.
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unsafe { binder_transaction_received(raw_transaction(t)) }
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}
+2
drivers/android/binder/transaction.rs
+2
drivers/android/binder/transaction.rs
···
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self.drop_outstanding_txn();
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crate::trace::trace_transaction_received(&self);
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// When this is not a reply and not a oneway transaction, update `current_transaction`. If
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// it's a reply, `current_transaction` has already been updated appropriately.
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if self.target_node.is_some() && tr_sec.transaction_data.flags & TF_ONE_WAY == 0 {