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