LIB_H += ../../include/linux/perf_counter.h
LIB_H += perf.h
+LIB_H += types.h
LIB_H += util/list.h
LIB_H += util/rbtree.h
LIB_H += util/levenshtein.h
struct ip_event {
struct perf_event_header header;
- __u64 ip;
- __u32 pid, tid;
+ u64 ip;
+ u32 pid, tid;
};
struct mmap_event {
struct perf_event_header header;
- __u32 pid, tid;
- __u64 start;
- __u64 len;
- __u64 pgoff;
+ u32 pid, tid;
+ u64 start;
+ u64 len;
+ u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
- __u32 pid, tid;
+ u32 pid, tid;
char comm[16];
};
struct fork_event {
struct perf_event_header header;
- __u32 pid, ppid;
+ u32 pid, ppid;
};
struct period_event {
struct perf_event_header header;
- __u64 time;
- __u64 id;
- __u64 sample_period;
+ u64 time;
+ u64 id;
+ u64 sample_period;
};
typedef union event_union {
dso__fprintf(pos, fp);
}
-static struct symbol *vdso__find_symbol(struct dso *dso, __u64 ip)
+static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
return dso__find_symbol(kernel_dso, ip);
}
struct map {
struct list_head node;
- __u64 start;
- __u64 end;
- __u64 pgoff;
- __u64 (*map_ip)(struct map *, __u64);
+ u64 start;
+ u64 end;
+ u64 pgoff;
+ u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
-static __u64 map__map_ip(struct map *map, __u64 ip)
+static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
-static __u64 vdso__map_ip(struct map *map, __u64 ip)
+static u64 vdso__map_ip(struct map *map, u64 ip)
{
return ip;
}
return 0;
}
-static struct map *thread__find_map(struct thread *self, __u64 ip)
+static struct map *thread__find_map(struct thread *self, u64 ip)
{
struct map *pos;
struct map *map;
struct dso *dso;
struct symbol *sym;
- __u64 ip;
+ u64 ip;
char level;
uint32_t count;
if (self->dso)
return fprintf(fp, "%-25s", self->dso->name);
- return fprintf(fp, "%016llx ", (__u64)self->ip);
+ return fprintf(fp, "%016llx ", (u64)self->ip);
}
static struct sort_entry sort_dso = {
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
- __u64 ip_l, ip_r;
+ u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
size_t ret = 0;
if (verbose)
- ret += fprintf(fp, "%#018llx ", (__u64)self->ip);
+ ret += fprintf(fp, "%#018llx ", (u64)self->ip);
if (self->sym) {
ret += fprintf(fp, "[%c] %s",
self->dso == kernel_dso ? 'k' : '.', self->sym->name);
} else {
- ret += fprintf(fp, "%#016llx", (__u64)self->ip);
+ ret += fprintf(fp, "%#016llx", (u64)self->ip);
}
return ret;
/*
* collect histogram counts
*/
-static void hist_hit(struct hist_entry *he, __u64 ip)
+static void hist_hit(struct hist_entry *he, u64 ip)
{
unsigned int sym_size, offset;
struct symbol *sym = he->sym;
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
- struct symbol *sym, __u64 ip, char level)
+ struct symbol *sym, u64 ip, char level)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
int show = 0;
struct dso *dso = NULL;
struct thread *thread = threads__findnew(event->ip.pid);
- __u64 ip = event->ip.ip;
+ u64 ip = event->ip.ip;
struct map *map = NULL;
dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p\n",
}
static int
-parse_line(FILE *file, struct symbol *sym, __u64 start, __u64 len)
+parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
{
char *line = NULL, *tmp, *tmp2;
static const char *prev_line;
static const char *prev_color;
unsigned int offset;
size_t line_len;
- __u64 line_ip;
+ u64 line_ip;
int ret;
char *c;
/* Get the filename:line for the colored entries */
static void
-get_source_line(struct symbol *sym, __u64 start, int len, char *filename)
+get_source_line(struct symbol *sym, u64 start, int len, char *filename)
{
int i;
char cmd[PATH_MAX * 2];
for (i = 0; i < len; i++) {
char *path = NULL;
size_t line_len;
- __u64 offset;
+ u64 offset;
FILE *fp;
sym_ext[i].percent = 100.0 * sym->hist[i] / sym->hist_sum;
static void annotate_sym(struct dso *dso, struct symbol *sym)
{
char *filename = dso->name;
- __u64 start, end, len;
+ u64 start, end, len;
char command[PATH_MAX*2];
FILE *file;
if (verbose >= 2)
printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
- sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (__u64)start, (__u64)end, filename);
+ sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (u64)start, (u64)end, filename);
if (verbose >= 3)
printf("doing: %s\n", command);
static struct timeval last_read;
static struct timeval this_read;
-static __u64 bytes_written;
+static u64 bytes_written;
static struct pollfd event_array[MAX_NR_CPUS * MAX_COUNTERS];
struct mmap_event {
struct perf_event_header header;
- __u32 pid;
- __u32 tid;
- __u64 start;
- __u64 len;
- __u64 pgoff;
+ u32 pid;
+ u32 tid;
+ u64 start;
+ u64 len;
+ u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
- __u32 pid;
- __u32 tid;
+ u32 pid;
+ u32 tid;
char comm[16];
};
comm_ev.pid = pid;
comm_ev.header.type = PERF_EVENT_COMM;
- size = ALIGN(size, sizeof(__u64));
+ size = ALIGN(size, sizeof(u64));
comm_ev.header.size = sizeof(comm_ev) - (sizeof(comm_ev.comm) - size);
if (!full) {
size = strlen(execname);
execname[size - 1] = '\0'; /* Remove \n */
memcpy(mmap_ev.filename, execname, size);
- size = ALIGN(size, sizeof(__u64));
+ size = ALIGN(size, sizeof(u64));
mmap_ev.len -= mmap_ev.start;
mmap_ev.header.size = (sizeof(mmap_ev) -
(sizeof(mmap_ev.filename) - size));
struct ip_event {
struct perf_event_header header;
- __u64 ip;
- __u32 pid, tid;
+ u64 ip;
+ u32 pid, tid;
unsigned char __more_data[];
};
struct ip_callchain {
- __u64 nr;
- __u64 ips[0];
+ u64 nr;
+ u64 ips[0];
};
struct mmap_event {
struct perf_event_header header;
- __u32 pid, tid;
- __u64 start;
- __u64 len;
- __u64 pgoff;
+ u32 pid, tid;
+ u64 start;
+ u64 len;
+ u64 pgoff;
char filename[PATH_MAX];
};
struct comm_event {
struct perf_event_header header;
- __u32 pid, tid;
+ u32 pid, tid;
char comm[16];
};
struct fork_event {
struct perf_event_header header;
- __u32 pid, ppid;
+ u32 pid, ppid;
};
struct period_event {
struct perf_event_header header;
- __u64 time;
- __u64 id;
- __u64 sample_period;
+ u64 time;
+ u64 id;
+ u64 sample_period;
};
struct lost_event {
struct perf_event_header header;
- __u64 id;
- __u64 lost;
+ u64 id;
+ u64 lost;
};
typedef union event_union {
dso__fprintf(pos, fp);
}
-static struct symbol *vdso__find_symbol(struct dso *dso, __u64 ip)
+static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
return dso__find_symbol(kernel_dso, ip);
}
struct map {
struct list_head node;
- __u64 start;
- __u64 end;
- __u64 pgoff;
- __u64 (*map_ip)(struct map *, __u64);
+ u64 start;
+ u64 end;
+ u64 pgoff;
+ u64 (*map_ip)(struct map *, u64);
struct dso *dso;
};
-static __u64 map__map_ip(struct map *map, __u64 ip)
+static u64 map__map_ip(struct map *map, u64 ip)
{
return ip - map->start + map->pgoff;
}
-static __u64 vdso__map_ip(struct map *map, __u64 ip)
+static u64 vdso__map_ip(struct map *map, u64 ip)
{
return ip;
}
return 0;
}
-static struct map *thread__find_map(struct thread *self, __u64 ip)
+static struct map *thread__find_map(struct thread *self, u64 ip)
{
struct map *pos;
struct dso *dso;
struct symbol *sym;
struct symbol *parent;
- __u64 ip;
+ u64 ip;
char level;
- __u64 count;
+ u64 count;
};
/*
if (self->dso)
return fprintf(fp, "%-25s", self->dso->name);
- return fprintf(fp, "%016llx ", (__u64)self->ip);
+ return fprintf(fp, "%016llx ", (u64)self->ip);
}
static struct sort_entry sort_dso = {
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
- __u64 ip_l, ip_r;
+ u64 ip_l, ip_r;
if (left->sym == right->sym)
return 0;
size_t ret = 0;
if (verbose)
- ret += fprintf(fp, "%#018llx ", (__u64)self->ip);
+ ret += fprintf(fp, "%#018llx ", (u64)self->ip);
if (self->sym) {
ret += fprintf(fp, "[%c] %s",
self->dso == kernel_dso ? 'k' : '.', self->sym->name);
} else {
- ret += fprintf(fp, "%#016llx", (__u64)self->ip);
+ ret += fprintf(fp, "%#016llx", (u64)self->ip);
}
return ret;
}
static size_t
-hist_entry__fprintf(FILE *fp, struct hist_entry *self, __u64 total_samples)
+hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
{
struct sort_entry *se;
size_t ret;
static struct symbol *
resolve_symbol(struct thread *thread, struct map **mapp,
- struct dso **dsop, __u64 *ipp)
+ struct dso **dsop, u64 *ipp)
{
struct dso *dso = dsop ? *dsop : NULL;
struct map *map = mapp ? *mapp : NULL;
static int
hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
- struct symbol *sym, __u64 ip, struct ip_callchain *chain,
- char level, __u64 count)
+ struct symbol *sym, u64 ip, struct ip_callchain *chain,
+ char level, u64 count)
{
struct rb_node **p = &hist.rb_node;
struct rb_node *parent = NULL;
int cmp;
if (sort__has_parent && chain) {
- __u64 context = PERF_CONTEXT_MAX;
+ u64 context = PERF_CONTEXT_MAX;
int i;
for (i = 0; i < chain->nr; i++) {
- __u64 ip = chain->ips[i];
+ u64 ip = chain->ips[i];
struct dso *dso = NULL;
struct symbol *sym;
}
}
-static size_t output__fprintf(FILE *fp, __u64 total_samples)
+static size_t output__fprintf(FILE *fp, u64 total_samples)
{
struct hist_entry *pos;
struct sort_entry *se;
fprintf(fp, "\n");
fprintf(fp, "#\n");
- fprintf(fp, "# (%Ld samples)\n", (__u64)total_samples);
+ fprintf(fp, "# (%Ld samples)\n", (u64)total_samples);
fprintf(fp, "#\n");
fprintf(fp, "# Overhead");
chain_size = event->header.size;
chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
- if (chain->nr*sizeof(__u64) > chain_size)
+ if (chain->nr*sizeof(u64) > chain_size)
return -1;
return 0;
int show = 0;
struct dso *dso = NULL;
struct thread *thread = threads__findnew(event->ip.pid);
- __u64 ip = event->ip.ip;
- __u64 period = 1;
+ u64 ip = event->ip.ip;
+ u64 period = 1;
struct map *map = NULL;
void *more_data = event->ip.__more_data;
struct ip_callchain *chain = NULL;
if (event->header.type & PERF_SAMPLE_PERIOD) {
- period = *(__u64 *)more_data;
- more_data += sizeof(__u64);
+ period = *(u64 *)more_data;
+ more_data += sizeof(u64);
}
dprintf("%p [%p]: PERF_EVENT (IP, %d): %d: %p period: %Ld\n",
static int run_count = 1;
static int run_idx = 0;
-static __u64 event_res[MAX_RUN][MAX_COUNTERS][3];
-static __u64 event_scaled[MAX_RUN][MAX_COUNTERS];
+static u64 event_res[MAX_RUN][MAX_COUNTERS][3];
+static u64 event_scaled[MAX_RUN][MAX_COUNTERS];
-//static __u64 event_hist[MAX_RUN][MAX_COUNTERS][3];
+//static u64 event_hist[MAX_RUN][MAX_COUNTERS][3];
-static __u64 runtime_nsecs[MAX_RUN];
-static __u64 walltime_nsecs[MAX_RUN];
-static __u64 runtime_cycles[MAX_RUN];
+static u64 runtime_nsecs[MAX_RUN];
+static u64 walltime_nsecs[MAX_RUN];
+static u64 runtime_cycles[MAX_RUN];
-static __u64 event_res_avg[MAX_COUNTERS][3];
-static __u64 event_res_noise[MAX_COUNTERS][3];
+static u64 event_res_avg[MAX_COUNTERS][3];
+static u64 event_res_noise[MAX_COUNTERS][3];
-static __u64 event_scaled_avg[MAX_COUNTERS];
+static u64 event_scaled_avg[MAX_COUNTERS];
-static __u64 runtime_nsecs_avg;
-static __u64 runtime_nsecs_noise;
+static u64 runtime_nsecs_avg;
+static u64 runtime_nsecs_noise;
-static __u64 walltime_nsecs_avg;
-static __u64 walltime_nsecs_noise;
+static u64 walltime_nsecs_avg;
+static u64 walltime_nsecs_noise;
-static __u64 runtime_cycles_avg;
-static __u64 runtime_cycles_noise;
+static u64 runtime_cycles_avg;
+static u64 runtime_cycles_noise;
static void create_perf_stat_counter(int counter)
{
*/
static void read_counter(int counter)
{
- __u64 *count, single_count[3];
+ u64 *count, single_count[3];
ssize_t res;
int cpu, nv;
int scaled;
if (fd[cpu][counter] < 0)
continue;
- res = read(fd[cpu][counter], single_count, nv * sizeof(__u64));
- assert(res == nv * sizeof(__u64));
+ res = read(fd[cpu][counter], single_count, nv * sizeof(u64));
+ assert(res == nv * sizeof(u64));
close(fd[cpu][counter]);
fd[cpu][counter] = -1;
return WEXITSTATUS(status);
}
-static void print_noise(__u64 *count, __u64 *noise)
+static void print_noise(u64 *count, u64 *noise)
{
if (run_count > 1)
fprintf(stderr, " ( +- %7.3f%% )",
(double)noise[0]/(count[0]+1)*100.0);
}
-static void nsec_printout(int counter, __u64 *count, __u64 *noise)
+static void nsec_printout(int counter, u64 *count, u64 *noise)
{
double msecs = (double)count[0] / 1000000;
print_noise(count, noise);
}
-static void abs_printout(int counter, __u64 *count, __u64 *noise)
+static void abs_printout(int counter, u64 *count, u64 *noise)
{
fprintf(stderr, " %14Ld %-20s", count[0], event_name(counter));
*/
static void print_counter(int counter)
{
- __u64 *count, *noise;
+ u64 *count, *noise;
int scaled;
count = event_res_avg[counter];
/*
* normalize_noise noise values down to stddev:
*/
-static void normalize_noise(__u64 *val)
+static void normalize_noise(u64 *val)
{
double res;
res = (double)*val / (run_count * sqrt((double)run_count));
- *val = (__u64)res;
+ *val = (u64)res;
}
-static void update_avg(const char *name, int idx, __u64 *avg, __u64 *val)
+static void update_avg(const char *name, int idx, u64 *avg, u64 *val)
{
*avg += *val;
for (i = 0; i < run_count; i++) {
runtime_nsecs_noise +=
- abs((__s64)(runtime_nsecs[i] - runtime_nsecs_avg));
+ abs((s64)(runtime_nsecs[i] - runtime_nsecs_avg));
walltime_nsecs_noise +=
- abs((__s64)(walltime_nsecs[i] - walltime_nsecs_avg));
+ abs((s64)(walltime_nsecs[i] - walltime_nsecs_avg));
runtime_cycles_noise +=
- abs((__s64)(runtime_cycles[i] - runtime_cycles_avg));
+ abs((s64)(runtime_cycles[i] - runtime_cycles_avg));
for (j = 0; j < nr_counters; j++) {
event_res_noise[j][0] +=
- abs((__s64)(event_res[i][j][0] - event_res_avg[j][0]));
+ abs((s64)(event_res[i][j][0] - event_res_avg[j][0]));
event_res_noise[j][1] +=
- abs((__s64)(event_res[i][j][1] - event_res_avg[j][1]));
+ abs((s64)(event_res[i][j][1] - event_res_avg[j][1]));
event_res_noise[j][2] +=
- abs((__s64)(event_res[i][j][2] - event_res_avg[j][2]));
+ abs((s64)(event_res[i][j][2] - event_res_avg[j][2]));
}
}
static int default_interval = 100000;
-static __u64 count_filter = 5;
+static u64 count_filter = 5;
static int print_entries = 15;
static int target_pid = -1;
* Symbols
*/
-static __u64 min_ip;
-static __u64 max_ip = -1ll;
+static u64 min_ip;
+static u64 max_ip = -1ll;
struct sym_entry {
struct rb_node rb_node;
100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
if (nr_counters == 1) {
- printf("%Ld", attrs[0].sample_period);
+ printf("%Ld", (u64)attrs[0].sample_period);
if (freq)
printf("Hz ");
else
/*
* Binary search in the histogram table and record the hit:
*/
-static void record_ip(__u64 ip, int counter)
+static void record_ip(u64 ip, int counter)
{
struct symbol *sym = dso__find_symbol(kernel_dso, ip);
samples--;
}
-static void process_event(__u64 ip, int counter)
+static void process_event(u64 ip, int counter)
{
samples++;
for (; old != head;) {
struct ip_event {
struct perf_event_header header;
- __u64 ip;
- __u32 pid, target_pid;
+ u64 ip;
+ u32 pid, target_pid;
};
struct mmap_event {
struct perf_event_header header;
- __u32 pid, target_pid;
- __u64 start;
- __u64 len;
- __u64 pgoff;
+ u32 pid, target_pid;
+ u64 start;
+ u64 len;
+ u64 pgoff;
char filename[PATH_MAX];
};
#include <sys/syscall.h>
#include "../../include/linux/perf_counter.h"
+#include "types.h"
/*
* prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
#define MAX_NR_CPUS 256
struct perf_file_header {
- __u64 version;
- __u64 sample_type;
- __u64 data_size;
+ u64 version;
+ u64 sample_type;
+ u64 data_size;
};
#endif
--- /dev/null
+#ifndef _PERF_TYPES_H
+#define _PERF_TYPES_H
+
+/*
+ * We define u64 as unsigned long long for every architecture
+ * so that we can print it with %Lx without getting warnings.
+ */
+typedef unsigned long long u64;
+typedef signed long long s64;
+typedef unsigned int u32;
+typedef signed int s32;
+typedef unsigned short u16;
+typedef signed short s16;
+typedef unsigned char u8;
+typedef signed char s8;
+
+#endif /* _PERF_TYPES_H */
struct perf_counter_attr attrs[MAX_COUNTERS];
struct event_symbol {
- __u8 type;
- __u64 config;
+ u8 type;
+ u64 config;
char *symbol;
};
char *event_name(int counter)
{
- __u64 config = attrs[counter].config;
+ u64 config = attrs[counter].config;
int type = attrs[counter].type;
static char buf[32];
return "unknown-hardware";
case PERF_TYPE_HW_CACHE: {
- __u8 cache_type, cache_op, cache_result;
+ u8 cache_type, cache_op, cache_result;
static char name[100];
cache_type = (config >> 0) & 0xff;
*/
static int parse_event_symbols(const char *str, struct perf_counter_attr *attr)
{
- __u64 config, id;
+ u64 config, id;
int type;
unsigned int i;
const char *sep, *pstr;
* While we find nice hex chars, build a long_val.
* Return number of chars processed.
*/
-int hex2u64(const char *ptr, __u64 *long_val)
+int hex2u64(const char *ptr, u64 *long_val)
{
const char *p = ptr;
*long_val = 0;
#ifndef _PERF_STRING_H_
#define _PERF_STRING_H_
-#include <linux/types.h>
+#include "../types.h"
-int hex2u64(const char *ptr, __u64 *val);
+int hex2u64(const char *ptr, u64 *val);
#endif
const char *sym_hist_filter;
-static struct symbol *symbol__new(__u64 start, __u64 len,
+static struct symbol *symbol__new(u64 start, u64 len,
const char *name, unsigned int priv_size,
- __u64 obj_start, int verbose)
+ u64 obj_start, int verbose)
{
size_t namelen = strlen(name) + 1;
struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
if (verbose >= 2)
printf("new symbol: %016Lx [%08lx]: %s, hist: %p, obj_start: %p\n",
- (__u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
+ (u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
self->obj_start= obj_start;
self->hist = NULL;
self->hist_sum = 0;
if (sym_hist_filter && !strcmp(name, sym_hist_filter))
- self->hist = calloc(sizeof(__u64), len);
+ self->hist = calloc(sizeof(u64), len);
if (priv_size) {
memset(self, 0, priv_size);
{
struct rb_node **p = &self->syms.rb_node;
struct rb_node *parent = NULL;
- const __u64 ip = sym->start;
+ const u64 ip = sym->start;
struct symbol *s;
while (*p != NULL) {
rb_insert_color(&sym->rb_node, &self->syms);
}
-struct symbol *dso__find_symbol(struct dso *self, __u64 ip)
+struct symbol *dso__find_symbol(struct dso *self, u64 ip)
{
struct rb_node *n;
goto out_failure;
while (!feof(file)) {
- __u64 start;
+ u64 start;
struct symbol *sym;
int line_len, len;
char symbol_type;
goto out_failure;
while (!feof(file)) {
- __u64 start, size;
+ u64 start, size;
struct symbol *sym;
int line_len, len;
{
uint32_t nr_rel_entries, idx;
GElf_Sym sym;
- __u64 plt_offset;
+ u64 plt_offset;
GElf_Shdr shdr_plt;
struct symbol *f;
GElf_Shdr shdr_rel_plt;
elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
struct symbol *f;
- __u64 obj_start;
+ u64 obj_start;
if (!elf_sym__is_function(&sym))
continue;
#define _PERF_SYMBOL_ 1
#include <linux/types.h>
+#include "../types.h"
#include "list.h"
#include "rbtree.h"
struct symbol {
struct rb_node rb_node;
- __u64 start;
- __u64 end;
- __u64 obj_start;
- __u64 hist_sum;
- __u64 *hist;
+ u64 start;
+ u64 end;
+ u64 obj_start;
+ u64 hist_sum;
+ u64 *hist;
void *priv;
char name[0];
};
struct list_head node;
struct rb_root syms;
unsigned int sym_priv_size;
- struct symbol *(*find_symbol)(struct dso *, __u64 ip);
+ struct symbol *(*find_symbol)(struct dso *, u64 ip);
char name[0];
};
return ((void *)sym) - self->sym_priv_size;
}
-struct symbol *dso__find_symbol(struct dso *self, __u64 ip);
+struct symbol *dso__find_symbol(struct dso *self, u64 ip);
int dso__load_kernel(struct dso *self, const char *vmlinux,
symbol_filter_t filter, int verbose);
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