258 lines
7.5 KiB
C
258 lines
7.5 KiB
C
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#ifndef PERF_UTIL_KWORK_H
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#define PERF_UTIL_KWORK_H
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#include "util/tool.h"
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#include "util/time-utils.h"
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#include <linux/bitmap.h>
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include <linux/types.h>
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struct perf_sample;
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struct perf_session;
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enum kwork_class_type {
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KWORK_CLASS_IRQ,
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KWORK_CLASS_SOFTIRQ,
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KWORK_CLASS_WORKQUEUE,
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KWORK_CLASS_MAX,
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};
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enum kwork_report_type {
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KWORK_REPORT_RUNTIME,
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KWORK_REPORT_LATENCY,
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KWORK_REPORT_TIMEHIST,
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};
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enum kwork_trace_type {
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KWORK_TRACE_RAISE,
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KWORK_TRACE_ENTRY,
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KWORK_TRACE_EXIT,
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KWORK_TRACE_MAX,
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};
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/*
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* data structure:
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*
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* +==================+ +============+ +======================+
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* | class | | work | | atom |
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* +==================+ +============+ +======================+
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* +------------+ | +-----+ | | +------+ | | +-------+ +-----+ |
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* | perf_kwork | +-> | irq | --------|+-> | eth0 | --+-> | raise | - | ... | --+ +-----------+
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* +-----+------+ || +-----+ ||| +------+ ||| +-------+ +-----+ | | | |
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* | || ||| ||| | +-> | atom_page |
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* | || ||| ||| +-------+ +-----+ | | |
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* | class_list ||| |+-> | entry | - | ... | ----> | |
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* | || ||| ||| +-------+ +-----+ | | |
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* | || ||| ||| | +-> | |
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* | || ||| ||| +-------+ +-----+ | | | |
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* | || ||| |+-> | exit | - | ... | --+ +-----+-----+
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* | || ||| | | +-------+ +-----+ | |
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* | || ||| | | | |
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* | || ||| +-----+ | | | |
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* | || |+-> | ... | | | | |
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* | || | | +-----+ | | | |
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* | || | | | | | |
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* | || +---------+ | | +-----+ | | +-------+ +-----+ | |
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* | +-> | softirq | -------> | RCU | ---+-> | raise | - | ... | --+ +-----+-----+
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* | || +---------+ | | +-----+ ||| +-------+ +-----+ | | | |
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* | || | | ||| | +-> | atom_page |
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* | || | | ||| +-------+ +-----+ | | |
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* | || | | |+-> | entry | - | ... | ----> | |
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* | || | | ||| +-------+ +-----+ | | |
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* | || | | ||| | +-> | |
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* | || | | ||| +-------+ +-----+ | | | |
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* | || | | |+-> | exit | - | ... | --+ +-----+-----+
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* | || | | | | +-------+ +-----+ | |
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* | || | | | | | |
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* | || +-----------+ | | +-----+ | | | |
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* | +-> | workqueue | -----> | ... | | | | |
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* | | +-----------+ | | +-----+ | | | |
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* | +==================+ +============+ +======================+ |
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* | |
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* +----> atom_page_list ---------------------------------------------------------+
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*
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*/
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struct kwork_atom {
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struct list_head list;
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u64 time;
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struct kwork_atom *prev;
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void *page_addr;
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unsigned long bit_inpage;
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};
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#define NR_ATOM_PER_PAGE 128
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struct kwork_atom_page {
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struct list_head list;
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struct kwork_atom atoms[NR_ATOM_PER_PAGE];
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DECLARE_BITMAP(bitmap, NR_ATOM_PER_PAGE);
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};
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struct kwork_class;
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struct kwork_work {
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/*
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* class field
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*/
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struct rb_node node;
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struct kwork_class *class;
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/*
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* work field
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*/
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u64 id;
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int cpu;
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char *name;
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/*
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* atom field
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*/
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u64 nr_atoms;
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struct list_head atom_list[KWORK_TRACE_MAX];
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/*
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* runtime report
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*/
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u64 max_runtime;
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u64 max_runtime_start;
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u64 max_runtime_end;
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u64 total_runtime;
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/*
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* latency report
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*/
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u64 max_latency;
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u64 max_latency_start;
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u64 max_latency_end;
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u64 total_latency;
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};
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struct kwork_class {
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struct list_head list;
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const char *name;
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enum kwork_class_type type;
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unsigned int nr_tracepoints;
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const struct evsel_str_handler *tp_handlers;
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struct rb_root_cached work_root;
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int (*class_init)(struct kwork_class *class,
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struct perf_session *session);
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void (*work_init)(struct kwork_class *class,
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struct kwork_work *work,
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struct evsel *evsel,
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struct perf_sample *sample,
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struct machine *machine);
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void (*work_name)(struct kwork_work *work,
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char *buf, int len);
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};
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struct perf_kwork;
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struct trace_kwork_handler {
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int (*raise_event)(struct perf_kwork *kwork,
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struct kwork_class *class, struct evsel *evsel,
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struct perf_sample *sample, struct machine *machine);
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int (*entry_event)(struct perf_kwork *kwork,
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struct kwork_class *class, struct evsel *evsel,
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struct perf_sample *sample, struct machine *machine);
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int (*exit_event)(struct perf_kwork *kwork,
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struct kwork_class *class, struct evsel *evsel,
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struct perf_sample *sample, struct machine *machine);
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};
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struct perf_kwork {
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/*
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* metadata
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*/
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struct perf_tool tool;
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struct list_head class_list;
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struct list_head atom_page_list;
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struct list_head sort_list, cmp_id;
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struct rb_root_cached sorted_work_root;
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const struct trace_kwork_handler *tp_handler;
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/*
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* profile filters
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*/
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const char *profile_name;
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const char *cpu_list;
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DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
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const char *time_str;
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struct perf_time_interval ptime;
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/*
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* options for command
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*/
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bool force;
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const char *event_list_str;
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enum kwork_report_type report;
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/*
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* options for subcommand
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*/
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bool summary;
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const char *sort_order;
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bool show_callchain;
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unsigned int max_stack;
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bool use_bpf;
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/*
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* statistics
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*/
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u64 timestart;
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u64 timeend;
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unsigned long nr_events;
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unsigned long nr_lost_chunks;
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unsigned long nr_lost_events;
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u64 all_runtime;
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u64 all_count;
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u64 nr_skipped_events[KWORK_TRACE_MAX + 1];
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};
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struct kwork_work *perf_kwork_add_work(struct perf_kwork *kwork,
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struct kwork_class *class,
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struct kwork_work *key);
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#ifdef HAVE_BPF_SKEL
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int perf_kwork__trace_prepare_bpf(struct perf_kwork *kwork);
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int perf_kwork__report_read_bpf(struct perf_kwork *kwork);
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void perf_kwork__report_cleanup_bpf(void);
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void perf_kwork__trace_start(void);
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void perf_kwork__trace_finish(void);
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#else /* !HAVE_BPF_SKEL */
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static inline int
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perf_kwork__trace_prepare_bpf(struct perf_kwork *kwork __maybe_unused)
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{
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return -1;
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}
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static inline int
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perf_kwork__report_read_bpf(struct perf_kwork *kwork __maybe_unused)
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{
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return -1;
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}
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static inline void perf_kwork__report_cleanup_bpf(void) {}
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static inline void perf_kwork__trace_start(void) {}
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static inline void perf_kwork__trace_finish(void) {}
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#endif /* HAVE_BPF_SKEL */
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#endif /* PERF_UTIL_KWORK_H */
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