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052747700e
With the existing symbol_from/symbol_to, branches captured in the same function would be collapsed into a single function if the latencies associated with the each branch (cycles) were all the same. That is the case on Intel Broadwell, for instance. Since Intel Skylake, the latency is captured by hardware and therefore is used to disambiguate branches. Add addr_from/addr_to sort dimensions to sort branches based on their addresses and not the function there are in. The output is still the function name but the offset within the function is provided to uniquely identify each branch. These new sort dimensions also help with annotate because they create different entries in the histogram which, in turn, generates proper branch annotations. Here is an example using AMD's branch sampling: $ perf record -a -b -c 1000037 -e cpu/branch-brs/ test_prg $ perf report Samples: 6M of event 'cpu/branch-brs/', Event count (approx.): 6901276 Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycle 99.65% test_prg test_prg [.] test_thread [.] test_thread - 0.02% test_prg [kernel.vmlinux] [k] asm_sysvec_apic_timer_interrupt [k] error_entry - $ perf report -F overhead,comm,dso,addr_from,addr_to Samples: 6M of event 'cpu/branch-brs/', Event count (approx.): 6901276 Overhead Command Shared Object Source Address Target Address 4.22% test_prg test_prg [.] test_thread+0x3c [.] test_thread+0x4 4.13% test_prg test_prg [.] test_thread+0x4 [.] test_thread+0x3a 4.09% test_prg test_prg [.] test_thread+0x3a [.] test_thread+0x6 4.08% test_prg test_prg [.] test_thread+0x2 [.] test_thread+0x3c 4.06% test_prg test_prg [.] test_thread+0x3e [.] test_thread+0x2 3.87% test_prg test_prg [.] test_thread+0x6 [.] test_thread+0x38 3.84% test_prg test_prg [.] test_thread [.] test_thread+0x3e 3.76% test_prg test_prg [.] test_thread+0x1e [.] test_thread 3.76% test_prg test_prg [.] test_thread+0x38 [.] test_thread+0x8 3.56% test_prg test_prg [.] test_thread+0x22 [.] test_thread+0x1e 3.54% test_prg test_prg [.] test_thread+0x8 [.] test_thread+0x36 3.47% test_prg test_prg [.] test_thread+0x1c [.] test_thread+0x22 3.45% test_prg test_prg [.] test_thread+0x36 [.] test_thread+0xa 3.28% test_prg test_prg [.] test_thread+0x24 [.] test_thread+0x1c 3.25% test_prg test_prg [.] test_thread+0xa [.] test_thread+0x34 3.24% test_prg test_prg [.] test_thread+0x1a [.] test_thread+0x24 3.20% test_prg test_prg [.] test_thread+0x34 [.] test_thread+0xc 3.04% test_prg test_prg [.] test_thread+0x26 [.] test_thread+0x1a 3.01% test_prg test_prg [.] test_thread+0xc [.] test_thread+0x32 2.98% test_prg test_prg [.] test_thread+0x18 [.] test_thread+0x26 2.94% test_prg test_prg [.] test_thread+0x32 [.] test_thread+0xe 2.76% test_prg test_prg [.] test_thread+0x28 [.] test_thread+0x18 2.73% test_prg test_prg [.] test_thread+0xe [.] test_thread+0x30 2.67% test_prg test_prg [.] test_thread+0x30 [.] test_thread+0x10 2.67% test_prg test_prg [.] test_thread+0x16 [.] test_thread+0x28 2.46% test_prg test_prg [.] test_thread+0x10 [.] test_thread+0x2e 2.44% test_prg test_prg [.] test_thread+0x2a [.] test_thread+0x16 2.38% test_prg test_prg [.] test_thread+0x14 [.] test_thread+0x2a 2.32% test_prg test_prg [.] test_thread+0x2e [.] test_thread+0x12 2.28% test_prg test_prg [.] test_thread+0x12 [.] test_thread+0x2c 2.16% test_prg test_prg [.] test_thread+0x2c [.] test_thread+0x14 0.02% test_prg [kernel.vmlinux] [k] asm_sysvec_apic_ti+0x5 [k] error_entry Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Link: http://lore.kernel.org/lkml/20220208211637.2221872-13-eranian@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
330 lines
7.3 KiB
C
330 lines
7.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_SORT_H
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#define __PERF_SORT_H
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#include <regex.h>
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#include <stdbool.h>
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include "map_symbol.h"
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#include "symbol_conf.h"
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#include "callchain.h"
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#include "values.h"
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#include "hist.h"
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#include "stat.h"
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#include "spark.h"
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struct option;
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struct thread;
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extern regex_t parent_regex;
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extern const char *sort_order;
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extern const char *field_order;
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extern const char default_parent_pattern[];
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extern const char *parent_pattern;
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extern const char *default_sort_order;
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extern regex_t ignore_callees_regex;
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extern int have_ignore_callees;
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extern enum sort_mode sort__mode;
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extern struct sort_entry sort_comm;
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extern struct sort_entry sort_dso;
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extern struct sort_entry sort_sym;
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extern struct sort_entry sort_parent;
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extern struct sort_entry sort_dso_from;
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extern struct sort_entry sort_dso_to;
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extern struct sort_entry sort_sym_from;
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extern struct sort_entry sort_sym_to;
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extern struct sort_entry sort_srcline;
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extern enum sort_type sort__first_dimension;
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extern const char default_mem_sort_order[];
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struct res_sample {
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u64 time;
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int cpu;
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int tid;
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};
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struct he_stat {
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u64 period;
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u64 period_sys;
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u64 period_us;
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u64 period_guest_sys;
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u64 period_guest_us;
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u32 nr_events;
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};
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struct namespace_id {
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u64 dev;
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u64 ino;
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};
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struct hist_entry_diff {
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bool computed;
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union {
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/* PERF_HPP__DELTA */
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double period_ratio_delta;
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/* PERF_HPP__RATIO */
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double period_ratio;
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/* HISTC_WEIGHTED_DIFF */
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s64 wdiff;
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/* PERF_HPP_DIFF__CYCLES */
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s64 cycles;
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};
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struct stats stats;
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unsigned long svals[NUM_SPARKS];
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};
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struct hist_entry_ops {
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void *(*new)(size_t size);
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void (*free)(void *ptr);
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};
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/**
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* struct hist_entry - histogram entry
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*
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* @row_offset - offset from the first callchain expanded to appear on screen
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* @nr_rows - rows expanded in callchain, recalculated on folding/unfolding
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*/
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struct hist_entry {
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struct rb_node rb_node_in;
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struct rb_node rb_node;
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union {
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struct list_head node;
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struct list_head head;
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} pairs;
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struct he_stat stat;
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struct he_stat *stat_acc;
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struct map_symbol ms;
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struct thread *thread;
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struct comm *comm;
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struct namespace_id cgroup_id;
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u64 cgroup;
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u64 ip;
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u64 transaction;
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s32 socket;
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s32 cpu;
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u64 code_page_size;
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u64 weight;
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u64 ins_lat;
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u64 p_stage_cyc;
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u8 cpumode;
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u8 depth;
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/* We are added by hists__add_dummy_entry. */
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bool dummy;
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bool leaf;
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char level;
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u8 filtered;
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u16 callchain_size;
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union {
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/*
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* Since perf diff only supports the stdio output, TUI
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* fields are only accessed from perf report (or perf
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* top). So make it a union to reduce memory usage.
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*/
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struct hist_entry_diff diff;
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struct /* for TUI */ {
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u16 row_offset;
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u16 nr_rows;
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bool init_have_children;
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bool unfolded;
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bool has_children;
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bool has_no_entry;
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};
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};
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char *srcline;
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char *srcfile;
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struct symbol *parent;
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struct branch_info *branch_info;
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long time;
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struct hists *hists;
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struct mem_info *mem_info;
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struct block_info *block_info;
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void *raw_data;
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u32 raw_size;
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int num_res;
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struct res_sample *res_samples;
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void *trace_output;
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struct perf_hpp_list *hpp_list;
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struct hist_entry *parent_he;
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struct hist_entry_ops *ops;
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union {
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/* this is for hierarchical entry structure */
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struct {
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struct rb_root_cached hroot_in;
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struct rb_root_cached hroot_out;
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}; /* non-leaf entries */
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struct rb_root sorted_chain; /* leaf entry has callchains */
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};
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struct callchain_root callchain[0]; /* must be last member */
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};
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static __pure inline bool hist_entry__has_callchains(struct hist_entry *he)
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{
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return he->callchain_size != 0;
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}
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int hist_entry__sym_snprintf(struct hist_entry *he, char *bf, size_t size, unsigned int width);
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static inline bool hist_entry__has_pairs(struct hist_entry *he)
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{
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return !list_empty(&he->pairs.node);
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}
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static inline struct hist_entry *hist_entry__next_pair(struct hist_entry *he)
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{
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if (hist_entry__has_pairs(he))
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return list_entry(he->pairs.node.next, struct hist_entry, pairs.node);
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return NULL;
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}
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static inline void hist_entry__add_pair(struct hist_entry *pair,
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struct hist_entry *he)
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{
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list_add_tail(&pair->pairs.node, &he->pairs.head);
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}
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static inline float hist_entry__get_percent_limit(struct hist_entry *he)
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{
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u64 period = he->stat.period;
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u64 total_period = hists__total_period(he->hists);
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if (unlikely(total_period == 0))
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return 0;
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if (symbol_conf.cumulate_callchain)
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period = he->stat_acc->period;
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return period * 100.0 / total_period;
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}
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enum sort_mode {
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SORT_MODE__NORMAL,
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SORT_MODE__BRANCH,
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SORT_MODE__MEMORY,
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SORT_MODE__TOP,
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SORT_MODE__DIFF,
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SORT_MODE__TRACEPOINT,
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};
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enum sort_type {
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/* common sort keys */
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SORT_PID,
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SORT_COMM,
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SORT_DSO,
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SORT_SYM,
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SORT_PARENT,
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SORT_CPU,
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SORT_SOCKET,
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SORT_SRCLINE,
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SORT_SRCFILE,
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SORT_LOCAL_WEIGHT,
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SORT_GLOBAL_WEIGHT,
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SORT_TRANSACTION,
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SORT_TRACE,
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SORT_SYM_SIZE,
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SORT_DSO_SIZE,
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SORT_CGROUP,
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SORT_CGROUP_ID,
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SORT_SYM_IPC_NULL,
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SORT_TIME,
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SORT_CODE_PAGE_SIZE,
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SORT_LOCAL_INS_LAT,
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SORT_GLOBAL_INS_LAT,
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SORT_LOCAL_PIPELINE_STAGE_CYC,
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SORT_GLOBAL_PIPELINE_STAGE_CYC,
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/* branch stack specific sort keys */
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__SORT_BRANCH_STACK,
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SORT_DSO_FROM = __SORT_BRANCH_STACK,
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SORT_DSO_TO,
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SORT_SYM_FROM,
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SORT_SYM_TO,
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SORT_MISPREDICT,
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SORT_ABORT,
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SORT_IN_TX,
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SORT_CYCLES,
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SORT_SRCLINE_FROM,
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SORT_SRCLINE_TO,
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SORT_SYM_IPC,
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SORT_ADDR_FROM,
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SORT_ADDR_TO,
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/* memory mode specific sort keys */
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__SORT_MEMORY_MODE,
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SORT_MEM_DADDR_SYMBOL = __SORT_MEMORY_MODE,
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SORT_MEM_DADDR_DSO,
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SORT_MEM_LOCKED,
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SORT_MEM_TLB,
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SORT_MEM_LVL,
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SORT_MEM_SNOOP,
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SORT_MEM_DCACHELINE,
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SORT_MEM_IADDR_SYMBOL,
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SORT_MEM_PHYS_DADDR,
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SORT_MEM_DATA_PAGE_SIZE,
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SORT_MEM_BLOCKED,
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};
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/*
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* configurable sorting bits
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*/
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struct sort_entry {
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const char *se_header;
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int64_t (*se_cmp)(struct hist_entry *, struct hist_entry *);
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int64_t (*se_collapse)(struct hist_entry *, struct hist_entry *);
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int64_t (*se_sort)(struct hist_entry *, struct hist_entry *);
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int (*se_snprintf)(struct hist_entry *he, char *bf, size_t size,
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unsigned int width);
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int (*se_filter)(struct hist_entry *he, int type, const void *arg);
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u8 se_width_idx;
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};
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struct block_hist {
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struct hists block_hists;
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struct perf_hpp_list block_list;
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struct perf_hpp_fmt block_fmt;
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int block_idx;
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bool valid;
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struct hist_entry he;
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};
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extern struct sort_entry sort_thread;
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extern struct list_head hist_entry__sort_list;
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struct evlist;
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struct tep_handle;
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int setup_sorting(struct evlist *evlist);
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int setup_output_field(void);
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void reset_output_field(void);
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void sort__setup_elide(FILE *fp);
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void perf_hpp__set_elide(int idx, bool elide);
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char *sort_help(const char *prefix);
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int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset);
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bool is_strict_order(const char *order);
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int hpp_dimension__add_output(unsigned col);
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void reset_dimensions(void);
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int sort_dimension__add(struct perf_hpp_list *list, const char *tok,
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struct evlist *evlist,
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int level);
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int output_field_add(struct perf_hpp_list *list, char *tok);
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int64_t
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sort__iaddr_cmp(struct hist_entry *left, struct hist_entry *right);
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int64_t
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sort__daddr_cmp(struct hist_entry *left, struct hist_entry *right);
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int64_t
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sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right);
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int64_t
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_sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r);
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char *hist_entry__srcline(struct hist_entry *he);
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#endif /* __PERF_SORT_H */
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