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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/tools/perf/util/thread-stack.h
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@@ -1,16 +1,7 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * thread-stack.h: Synthesize a thread's stack using call / return events
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  * Copyright (c) 2014, Intel Corporation.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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  */
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 #ifndef __PERF_THREAD_STACK_H
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@@ -35,10 +26,13 @@
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  *
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  * CALL_RETURN_NO_CALL: 'return' but no matching 'call'
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  * CALL_RETURN_NO_RETURN: 'call' but no matching 'return'
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+ * CALL_RETURN_NON_CALL: a branch but not a 'call' to the start of a different
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+ *                       symbol
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  */
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 enum {
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 	CALL_RETURN_NO_CALL	= 1 << 0,
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 	CALL_RETURN_NO_RETURN	= 1 << 1,
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+	CALL_RETURN_NON_CALL	= 1 << 2,
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 };
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 /**
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@@ -49,9 +43,12 @@
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  * @call_time: timestamp of call (if known)
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  * @return_time: timestamp of return (if known)
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  * @branch_count: number of branches seen between call and return
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+ * @insn_count: approx. number of instructions between call and return
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+ * @cyc_count: approx. number of cycles between call and return
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  * @call_ref: external reference to 'call' sample (e.g. db_id)
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  * @return_ref:  external reference to 'return' sample (e.g. db_id)
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  * @db_id: id used for db-export
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+ * @parent_db_id: id of parent call used for db-export
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  * @flags: Call/Return flags
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  */
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 struct call_return {
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@@ -61,9 +58,12 @@
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 	u64 call_time;
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 	u64 return_time;
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 	u64 branch_count;
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+	u64 insn_count;
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+	u64 cyc_count;
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 	u64 call_ref;
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 	u64 return_ref;
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 	u64 db_id;
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+	u64 parent_db_id;
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 	u32 flags;
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 };
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@@ -76,21 +76,30 @@
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  */
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 struct call_return_processor {
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 	struct call_path_root *cpr;
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-	int (*process)(struct call_return *cr, void *data);
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+	int (*process)(struct call_return *cr, u64 *parent_db_id, void *data);
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 	void *data;
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 };
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-int thread_stack__event(struct thread *thread, u32 flags, u64 from_ip,
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-			u64 to_ip, u16 insn_len, u64 trace_nr);
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-void thread_stack__set_trace_nr(struct thread *thread, u64 trace_nr);
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-void thread_stack__sample(struct thread *thread, struct ip_callchain *chain,
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+int thread_stack__event(struct thread *thread, int cpu, u32 flags, u64 from_ip,
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+			u64 to_ip, u16 insn_len, u64 trace_nr, bool callstack,
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+			unsigned int br_stack_sz, bool mispred_all);
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+void thread_stack__set_trace_nr(struct thread *thread, int cpu, u64 trace_nr);
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+void thread_stack__sample(struct thread *thread, int cpu, struct ip_callchain *chain,
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 			  size_t sz, u64 ip, u64 kernel_start);
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+void thread_stack__sample_late(struct thread *thread, int cpu,
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+			       struct ip_callchain *chain, size_t sz, u64 ip,
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+			       u64 kernel_start);
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+void thread_stack__br_sample(struct thread *thread, int cpu,
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+			     struct branch_stack *dst, unsigned int sz);
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+void thread_stack__br_sample_late(struct thread *thread, int cpu,
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+				  struct branch_stack *dst, unsigned int sz,
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+				  u64 sample_ip, u64 kernel_start);
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 int thread_stack__flush(struct thread *thread);
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 void thread_stack__free(struct thread *thread);
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-size_t thread_stack__depth(struct thread *thread);
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+size_t thread_stack__depth(struct thread *thread, int cpu);
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 struct call_return_processor *
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-call_return_processor__new(int (*process)(struct call_return *cr, void *data),
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+call_return_processor__new(int (*process)(struct call_return *cr, u64 *parent_db_id, void *data),
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 			   void *data);
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 void call_return_processor__free(struct call_return_processor *crp);
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 int thread_stack__process(struct thread *thread, struct comm *comm,