d001c7a7f4
Support data type profiling output on TUI.
Testing from Arnaldo:
First make sure that the debug information for your workload binaries
in embedded in them by building it with '-g' or install the debuginfo
packages, since our workload is 'find':
root@number:~# type find
find is hashed (/usr/bin/find)
root@number:~# rpm -qf /usr/bin/find
findutils-4.9.0-5.fc39.x86_64
root@number:~# dnf debuginfo-install findutils
<SNIP>
root@number:~#
Then collect some data:
root@number:~# echo 1 > /proc/sys/vm/drop_caches
root@number:~# perf mem record find / > /dev/null
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.331 MB perf.data (3982 samples) ]
root@number:~#
Finally do data-type annotation with the following command, that will
default, as 'perf report' to the --tui mode, with lines colored to
highlight the hotspots, etc.
root@number:~# perf annotate --data-type
Annotate type: 'struct predicate' (58 samples)
Percent Offset Size Field
100.00 0 312 struct predicate {
0.00 0 8 PRED_FUNC pred_func;
0.00 8 8 char* p_name;
0.00 16 4 enum predicate_type p_type;
0.00 20 4 enum predicate_precedence p_prec;
0.00 24 1 _Bool side_effects;
0.00 25 1 _Bool no_default_print;
0.00 26 1 _Bool need_stat;
0.00 27 1 _Bool need_type;
0.00 28 1 _Bool need_inum;
0.00 32 4 enum EvaluationCost p_cost;
0.00 36 4 float est_success_rate;
0.00 40 1 _Bool literal_control_chars;
0.00 41 1 _Bool artificial;
0.00 48 8 char* arg_text;
<SNIP>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240411033256.2099646-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
209 lines
5.4 KiB
C
209 lines
5.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_ANNOTATE_DATA_H
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#define _PERF_ANNOTATE_DATA_H
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#include <errno.h>
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#include <linux/compiler.h>
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#include <linux/rbtree.h>
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#include <linux/types.h>
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struct annotated_op_loc;
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struct debuginfo;
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struct evsel;
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struct hist_browser_timer;
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struct hist_entry;
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struct map_symbol;
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struct thread;
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/**
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* struct annotated_member - Type of member field
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* @node: List entry in the parent list
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* @children: List head for child nodes
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* @type_name: Name of the member type
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* @var_name: Name of the member variable
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* @offset: Offset from the outer data type
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* @size: Size of the member field
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*
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* This represents a member type in a data type.
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*/
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struct annotated_member {
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struct list_head node;
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struct list_head children;
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char *type_name;
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char *var_name;
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int offset;
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int size;
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};
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/**
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* struct type_hist_entry - Histogram entry per offset
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* @nr_samples: Number of samples
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* @period: Count of event
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*/
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struct type_hist_entry {
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int nr_samples;
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u64 period;
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};
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/**
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* struct type_hist - Type histogram for each event
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* @nr_samples: Total number of samples in this data type
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* @period: Total count of the event in this data type
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* @offset: Array of histogram entry
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*/
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struct type_hist {
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u64 nr_samples;
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u64 period;
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struct type_hist_entry addr[];
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};
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/**
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* struct annotated_data_type - Data type to profile
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* @node: RB-tree node for dso->type_tree
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* @self: Actual type information
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* @nr_histogram: Number of histogram entries
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* @histograms: An array of pointers to histograms
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*
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* This represents a data type accessed by samples in the profile data.
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*/
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struct annotated_data_type {
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struct rb_node node;
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struct annotated_member self;
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int nr_histograms;
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struct type_hist **histograms;
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};
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extern struct annotated_data_type unknown_type;
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extern struct annotated_data_type stackop_type;
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extern struct annotated_data_type canary_type;
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/**
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* struct data_loc_info - Data location information
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* @arch: CPU architecture info
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* @thread: Thread info
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* @ms: Map and Symbol info
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* @ip: Instruction address
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* @var_addr: Data address (for global variables)
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* @cpumode: CPU execution mode
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* @op: Instruction operand location (regs and offset)
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* @di: Debug info
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* @fbreg: Frame base register
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* @fb_cfa: Whether the frame needs to check CFA
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* @type_offset: Final offset in the type
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*/
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struct data_loc_info {
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/* These are input field, should be filled by caller */
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struct arch *arch;
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struct thread *thread;
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struct map_symbol *ms;
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u64 ip;
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u64 var_addr;
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u8 cpumode;
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struct annotated_op_loc *op;
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/* These are used internally */
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struct debuginfo *di;
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int fbreg;
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bool fb_cfa;
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/* This is for the result */
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int type_offset;
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};
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/**
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* struct annotated_data_stat - Debug statistics
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* @total: Total number of entry
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* @no_sym: No symbol or map found
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* @no_insn: Failed to get disasm line
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* @no_insn_ops: The instruction has no operands
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* @no_mem_ops: The instruction has no memory operands
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* @no_reg: Failed to extract a register from the operand
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* @no_dbginfo: The binary has no debug information
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* @no_cuinfo: Failed to find a compile_unit
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* @no_var: Failed to find a matching variable
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* @no_typeinfo: Failed to get a type info for the variable
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* @invalid_size: Failed to get a size info of the type
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* @bad_offset: The access offset is out of the type
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*/
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struct annotated_data_stat {
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int total;
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int no_sym;
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int no_insn;
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int no_insn_ops;
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int no_mem_ops;
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int no_reg;
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int no_dbginfo;
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int no_cuinfo;
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int no_var;
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int no_typeinfo;
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int invalid_size;
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int bad_offset;
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int insn_track;
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};
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extern struct annotated_data_stat ann_data_stat;
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#ifdef HAVE_DWARF_SUPPORT
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/* Returns data type at the location (ip, reg, offset) */
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struct annotated_data_type *find_data_type(struct data_loc_info *dloc);
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/* Update type access histogram at the given offset */
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int annotated_data_type__update_samples(struct annotated_data_type *adt,
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struct evsel *evsel, int offset,
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int nr_samples, u64 period);
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/* Release all data type information in the tree */
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void annotated_data_type__tree_delete(struct rb_root *root);
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/* Release all global variable information in the tree */
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void global_var_type__tree_delete(struct rb_root *root);
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int hist_entry__annotate_data_tty(struct hist_entry *he, struct evsel *evsel);
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#else /* HAVE_DWARF_SUPPORT */
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static inline struct annotated_data_type *
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find_data_type(struct data_loc_info *dloc __maybe_unused)
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{
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return NULL;
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}
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static inline int
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annotated_data_type__update_samples(struct annotated_data_type *adt __maybe_unused,
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struct evsel *evsel __maybe_unused,
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int offset __maybe_unused,
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int nr_samples __maybe_unused,
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u64 period __maybe_unused)
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{
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return -1;
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}
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static inline void annotated_data_type__tree_delete(struct rb_root *root __maybe_unused)
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{
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}
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static inline void global_var_type__tree_delete(struct rb_root *root __maybe_unused)
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{
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}
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static inline int hist_entry__annotate_data_tty(struct hist_entry *he __maybe_unused,
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struct evsel *evsel __maybe_unused)
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{
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return -1;
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}
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#endif /* HAVE_DWARF_SUPPORT */
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#ifdef HAVE_SLANG_SUPPORT
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int hist_entry__annotate_data_tui(struct hist_entry *he, struct evsel *evsel,
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struct hist_browser_timer *hbt);
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#else
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static inline int hist_entry__annotate_data_tui(struct hist_entry *he __maybe_unused,
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struct evsel *evsel __maybe_unused,
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struct hist_browser_timer *hbt __maybe_unused)
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{
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return -1;
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}
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#endif /* HAVE_SLANG_SUPPORT */
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#endif /* _PERF_ANNOTATE_DATA_H */
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