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https://github.com/edk2-porting/linux-next.git
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568850eaad
The exported sample now contains a reference to the call_path_id that represents its callchain. While callchains themselves are nice to have, being able to associate them with samples makes them much more useful, and can allow for such things as determining how much cumulative time is spent in a particular function. This information is normally possible to get from the call return processor. However, when doing normal sampling, call/return information is not available, thus necessitating the need for associating samples directly with call paths. This commit include changes to db-export layer to make this information available for subsequent patches in this change set, but by itself, does not make any changes visible to the user. Signed-off-by: Chris Phlipot <cphlipot0@gmail.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1461831551-12213-5-git-send-email-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* db-export.h: Support for exporting data suitable for import to a database
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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_DB_EXPORT_H
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#define __PERF_DB_EXPORT_H
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#include <linux/types.h>
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#include <linux/list.h>
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struct perf_evsel;
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struct machine;
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struct thread;
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struct comm;
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struct dso;
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struct perf_sample;
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struct addr_location;
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struct call_return_processor;
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struct call_path_root;
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struct call_path;
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struct call_return;
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struct export_sample {
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union perf_event *event;
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struct perf_sample *sample;
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struct perf_evsel *evsel;
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struct addr_location *al;
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u64 db_id;
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u64 comm_db_id;
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u64 dso_db_id;
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u64 sym_db_id;
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u64 offset; /* ip offset from symbol start */
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u64 addr_dso_db_id;
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u64 addr_sym_db_id;
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u64 addr_offset; /* addr offset from symbol start */
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u64 call_path_id;
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};
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struct db_export {
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int (*export_evsel)(struct db_export *dbe, struct perf_evsel *evsel);
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int (*export_machine)(struct db_export *dbe, struct machine *machine);
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int (*export_thread)(struct db_export *dbe, struct thread *thread,
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u64 main_thread_db_id, struct machine *machine);
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int (*export_comm)(struct db_export *dbe, struct comm *comm);
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int (*export_comm_thread)(struct db_export *dbe, u64 db_id,
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struct comm *comm, struct thread *thread);
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int (*export_dso)(struct db_export *dbe, struct dso *dso,
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struct machine *machine);
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int (*export_symbol)(struct db_export *dbe, struct symbol *sym,
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struct dso *dso);
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int (*export_branch_type)(struct db_export *dbe, u32 branch_type,
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const char *name);
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int (*export_sample)(struct db_export *dbe, struct export_sample *es);
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int (*export_call_path)(struct db_export *dbe, struct call_path *cp);
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int (*export_call_return)(struct db_export *dbe,
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struct call_return *cr);
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struct call_return_processor *crp;
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struct call_path_root *cpr;
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u64 evsel_last_db_id;
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u64 machine_last_db_id;
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u64 thread_last_db_id;
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u64 comm_last_db_id;
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u64 comm_thread_last_db_id;
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u64 dso_last_db_id;
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u64 symbol_last_db_id;
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u64 sample_last_db_id;
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u64 call_path_last_db_id;
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u64 call_return_last_db_id;
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struct list_head deferred;
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};
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int db_export__init(struct db_export *dbe);
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int db_export__flush(struct db_export *dbe);
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void db_export__exit(struct db_export *dbe);
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int db_export__evsel(struct db_export *dbe, struct perf_evsel *evsel);
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int db_export__machine(struct db_export *dbe, struct machine *machine);
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int db_export__thread(struct db_export *dbe, struct thread *thread,
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struct machine *machine, struct comm *comm);
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int db_export__comm(struct db_export *dbe, struct comm *comm,
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struct thread *main_thread);
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int db_export__comm_thread(struct db_export *dbe, struct comm *comm,
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struct thread *thread);
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int db_export__dso(struct db_export *dbe, struct dso *dso,
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struct machine *machine);
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int db_export__symbol(struct db_export *dbe, struct symbol *sym,
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struct dso *dso);
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int db_export__branch_type(struct db_export *dbe, u32 branch_type,
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const char *name);
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int db_export__sample(struct db_export *dbe, union perf_event *event,
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struct perf_sample *sample, struct perf_evsel *evsel,
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struct addr_location *al);
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int db_export__branch_types(struct db_export *dbe);
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int db_export__call_path(struct db_export *dbe, struct call_path *cp);
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int db_export__call_return(struct db_export *dbe, struct call_return *cr);
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#endif
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