mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-29 23:28:52 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
922
tools/perf/util/event.c
Normal file
922
tools/perf/util/event.c
Normal file
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@ -0,0 +1,922 @@
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#include <linux/types.h>
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#include <sys/mman.h>
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#include "event.h"
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#include "debug.h"
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#include "hist.h"
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#include "machine.h"
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#include "sort.h"
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#include "string.h"
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#include "strlist.h"
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#include "thread.h"
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#include "thread_map.h"
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#include "symbol/kallsyms.h"
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static const char *perf_event__names[] = {
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[0] = "TOTAL",
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[PERF_RECORD_MMAP] = "MMAP",
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[PERF_RECORD_MMAP2] = "MMAP2",
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[PERF_RECORD_LOST] = "LOST",
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[PERF_RECORD_COMM] = "COMM",
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[PERF_RECORD_EXIT] = "EXIT",
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[PERF_RECORD_THROTTLE] = "THROTTLE",
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[PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE",
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[PERF_RECORD_FORK] = "FORK",
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[PERF_RECORD_READ] = "READ",
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[PERF_RECORD_SAMPLE] = "SAMPLE",
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[PERF_RECORD_HEADER_ATTR] = "ATTR",
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[PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
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[PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
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[PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
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[PERF_RECORD_FINISHED_ROUND] = "FINISHED_ROUND",
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};
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const char *perf_event__name(unsigned int id)
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{
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if (id >= ARRAY_SIZE(perf_event__names))
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return "INVALID";
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if (!perf_event__names[id])
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return "UNKNOWN";
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return perf_event__names[id];
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}
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static struct perf_sample synth_sample = {
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.pid = -1,
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.tid = -1,
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.time = -1,
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.stream_id = -1,
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.cpu = -1,
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.period = 1,
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};
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static pid_t perf_event__get_comm_tgid(pid_t pid, char *comm, size_t len)
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{
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char filename[PATH_MAX];
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char bf[BUFSIZ];
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FILE *fp;
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size_t size = 0;
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pid_t tgid = -1;
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snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
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fp = fopen(filename, "r");
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if (fp == NULL) {
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pr_debug("couldn't open %s\n", filename);
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return 0;
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}
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while (!comm[0] || (tgid < 0)) {
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if (fgets(bf, sizeof(bf), fp) == NULL) {
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pr_warning("couldn't get COMM and pgid, malformed %s\n",
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filename);
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break;
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}
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if (memcmp(bf, "Name:", 5) == 0) {
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char *name = bf + 5;
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while (*name && isspace(*name))
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++name;
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size = strlen(name) - 1;
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if (size >= len)
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size = len - 1;
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memcpy(comm, name, size);
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comm[size] = '\0';
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} else if (memcmp(bf, "Tgid:", 5) == 0) {
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char *tgids = bf + 5;
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while (*tgids && isspace(*tgids))
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++tgids;
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tgid = atoi(tgids);
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}
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}
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fclose(fp);
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return tgid;
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}
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static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
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union perf_event *event, pid_t pid,
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perf_event__handler_t process,
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struct machine *machine)
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{
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size_t size;
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pid_t tgid;
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memset(&event->comm, 0, sizeof(event->comm));
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if (machine__is_host(machine))
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tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
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sizeof(event->comm.comm));
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else
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tgid = machine->pid;
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if (tgid < 0)
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goto out;
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event->comm.pid = tgid;
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event->comm.header.type = PERF_RECORD_COMM;
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size = strlen(event->comm.comm) + 1;
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size = PERF_ALIGN(size, sizeof(u64));
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memset(event->comm.comm + size, 0, machine->id_hdr_size);
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event->comm.header.size = (sizeof(event->comm) -
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(sizeof(event->comm.comm) - size) +
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machine->id_hdr_size);
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event->comm.tid = pid;
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if (process(tool, event, &synth_sample, machine) != 0)
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return -1;
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out:
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return tgid;
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}
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static int perf_event__synthesize_fork(struct perf_tool *tool,
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union perf_event *event, pid_t pid,
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pid_t tgid, perf_event__handler_t process,
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struct machine *machine)
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{
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memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
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/* this is really a clone event but we use fork to synthesize it */
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event->fork.ppid = tgid;
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event->fork.ptid = tgid;
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event->fork.pid = tgid;
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event->fork.tid = pid;
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event->fork.header.type = PERF_RECORD_FORK;
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event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
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if (process(tool, event, &synth_sample, machine) != 0)
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return -1;
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return 0;
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}
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int perf_event__synthesize_mmap_events(struct perf_tool *tool,
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union perf_event *event,
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pid_t pid, pid_t tgid,
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perf_event__handler_t process,
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struct machine *machine,
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bool mmap_data)
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{
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char filename[PATH_MAX];
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FILE *fp;
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int rc = 0;
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if (machine__is_default_guest(machine))
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return 0;
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snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
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machine->root_dir, pid);
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fp = fopen(filename, "r");
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if (fp == NULL) {
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/*
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* We raced with a task exiting - just return:
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*/
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pr_debug("couldn't open %s\n", filename);
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return -1;
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}
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event->header.type = PERF_RECORD_MMAP2;
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while (1) {
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char bf[BUFSIZ];
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char prot[5];
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char execname[PATH_MAX];
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char anonstr[] = "//anon";
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unsigned int ino;
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size_t size;
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ssize_t n;
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if (fgets(bf, sizeof(bf), fp) == NULL)
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break;
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/* ensure null termination since stack will be reused. */
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strcpy(execname, "");
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/* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
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n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
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&event->mmap2.start, &event->mmap2.len, prot,
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&event->mmap2.pgoff, &event->mmap2.maj,
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&event->mmap2.min,
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&ino, execname);
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/*
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* Anon maps don't have the execname.
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*/
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if (n < 7)
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continue;
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event->mmap2.ino = (u64)ino;
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/*
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* Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
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*/
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if (machine__is_host(machine))
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event->header.misc = PERF_RECORD_MISC_USER;
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else
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event->header.misc = PERF_RECORD_MISC_GUEST_USER;
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/* map protection and flags bits */
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event->mmap2.prot = 0;
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event->mmap2.flags = 0;
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if (prot[0] == 'r')
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event->mmap2.prot |= PROT_READ;
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if (prot[1] == 'w')
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event->mmap2.prot |= PROT_WRITE;
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if (prot[2] == 'x')
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event->mmap2.prot |= PROT_EXEC;
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if (prot[3] == 's')
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event->mmap2.flags |= MAP_SHARED;
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else
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event->mmap2.flags |= MAP_PRIVATE;
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if (prot[2] != 'x') {
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if (!mmap_data || prot[0] != 'r')
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continue;
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event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
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}
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if (!strcmp(execname, ""))
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strcpy(execname, anonstr);
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size = strlen(execname) + 1;
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memcpy(event->mmap2.filename, execname, size);
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size = PERF_ALIGN(size, sizeof(u64));
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event->mmap2.len -= event->mmap.start;
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event->mmap2.header.size = (sizeof(event->mmap2) -
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(sizeof(event->mmap2.filename) - size));
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memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
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event->mmap2.header.size += machine->id_hdr_size;
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event->mmap2.pid = tgid;
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event->mmap2.tid = pid;
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if (process(tool, event, &synth_sample, machine) != 0) {
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rc = -1;
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break;
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}
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}
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fclose(fp);
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return rc;
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}
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int perf_event__synthesize_modules(struct perf_tool *tool,
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perf_event__handler_t process,
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struct machine *machine)
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{
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int rc = 0;
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struct rb_node *nd;
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struct map_groups *kmaps = &machine->kmaps;
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union perf_event *event = zalloc((sizeof(event->mmap) +
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machine->id_hdr_size));
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if (event == NULL) {
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pr_debug("Not enough memory synthesizing mmap event "
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"for kernel modules\n");
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return -1;
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}
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event->header.type = PERF_RECORD_MMAP;
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/*
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* kernel uses 0 for user space maps, see kernel/perf_event.c
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* __perf_event_mmap
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*/
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if (machine__is_host(machine))
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event->header.misc = PERF_RECORD_MISC_KERNEL;
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else
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event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
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for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]);
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nd; nd = rb_next(nd)) {
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size_t size;
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struct map *pos = rb_entry(nd, struct map, rb_node);
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if (pos->dso->kernel)
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continue;
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size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
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event->mmap.header.type = PERF_RECORD_MMAP;
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event->mmap.header.size = (sizeof(event->mmap) -
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(sizeof(event->mmap.filename) - size));
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memset(event->mmap.filename + size, 0, machine->id_hdr_size);
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event->mmap.header.size += machine->id_hdr_size;
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event->mmap.start = pos->start;
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event->mmap.len = pos->end - pos->start;
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event->mmap.pid = machine->pid;
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memcpy(event->mmap.filename, pos->dso->long_name,
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pos->dso->long_name_len + 1);
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if (process(tool, event, &synth_sample, machine) != 0) {
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rc = -1;
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break;
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}
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}
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free(event);
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return rc;
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}
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static int __event__synthesize_thread(union perf_event *comm_event,
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union perf_event *mmap_event,
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union perf_event *fork_event,
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pid_t pid, int full,
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||||
perf_event__handler_t process,
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||||
struct perf_tool *tool,
|
||||
struct machine *machine, bool mmap_data)
|
||||
{
|
||||
char filename[PATH_MAX];
|
||||
DIR *tasks;
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||||
struct dirent dirent, *next;
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||||
pid_t tgid;
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|
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/* special case: only send one comm event using passed in pid */
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if (!full) {
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tgid = perf_event__synthesize_comm(tool, comm_event, pid,
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process, machine);
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||||
|
||||
if (tgid == -1)
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return -1;
|
||||
|
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return perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
|
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process, machine, mmap_data);
|
||||
}
|
||||
|
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if (machine__is_default_guest(machine))
|
||||
return 0;
|
||||
|
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snprintf(filename, sizeof(filename), "%s/proc/%d/task",
|
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machine->root_dir, pid);
|
||||
|
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tasks = opendir(filename);
|
||||
if (tasks == NULL) {
|
||||
pr_debug("couldn't open %s\n", filename);
|
||||
return 0;
|
||||
}
|
||||
|
||||
while (!readdir_r(tasks, &dirent, &next) && next) {
|
||||
char *end;
|
||||
int rc = 0;
|
||||
pid_t _pid;
|
||||
|
||||
_pid = strtol(dirent.d_name, &end, 10);
|
||||
if (*end)
|
||||
continue;
|
||||
|
||||
tgid = perf_event__synthesize_comm(tool, comm_event, _pid,
|
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process, machine);
|
||||
if (tgid == -1)
|
||||
return -1;
|
||||
|
||||
if (_pid == pid) {
|
||||
/* process the parent's maps too */
|
||||
rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
|
||||
process, machine, mmap_data);
|
||||
} else {
|
||||
/* only fork the tid's map, to save time */
|
||||
rc = perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
|
||||
process, machine);
|
||||
}
|
||||
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
closedir(tasks);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int perf_event__synthesize_thread_map(struct perf_tool *tool,
|
||||
struct thread_map *threads,
|
||||
perf_event__handler_t process,
|
||||
struct machine *machine,
|
||||
bool mmap_data)
|
||||
{
|
||||
union perf_event *comm_event, *mmap_event, *fork_event;
|
||||
int err = -1, thread, j;
|
||||
|
||||
comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
|
||||
if (comm_event == NULL)
|
||||
goto out;
|
||||
|
||||
mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
|
||||
if (mmap_event == NULL)
|
||||
goto out_free_comm;
|
||||
|
||||
fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
|
||||
if (fork_event == NULL)
|
||||
goto out_free_mmap;
|
||||
|
||||
err = 0;
|
||||
for (thread = 0; thread < threads->nr; ++thread) {
|
||||
if (__event__synthesize_thread(comm_event, mmap_event,
|
||||
fork_event,
|
||||
threads->map[thread], 0,
|
||||
process, tool, machine,
|
||||
mmap_data)) {
|
||||
err = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* comm.pid is set to thread group id by
|
||||
* perf_event__synthesize_comm
|
||||
*/
|
||||
if ((int) comm_event->comm.pid != threads->map[thread]) {
|
||||
bool need_leader = true;
|
||||
|
||||
/* is thread group leader in thread_map? */
|
||||
for (j = 0; j < threads->nr; ++j) {
|
||||
if ((int) comm_event->comm.pid == threads->map[j]) {
|
||||
need_leader = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* if not, generate events for it */
|
||||
if (need_leader &&
|
||||
__event__synthesize_thread(comm_event, mmap_event,
|
||||
fork_event,
|
||||
comm_event->comm.pid, 0,
|
||||
process, tool, machine,
|
||||
mmap_data)) {
|
||||
err = -1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
free(fork_event);
|
||||
out_free_mmap:
|
||||
free(mmap_event);
|
||||
out_free_comm:
|
||||
free(comm_event);
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
int perf_event__synthesize_threads(struct perf_tool *tool,
|
||||
perf_event__handler_t process,
|
||||
struct machine *machine, bool mmap_data)
|
||||
{
|
||||
DIR *proc;
|
||||
char proc_path[PATH_MAX];
|
||||
struct dirent dirent, *next;
|
||||
union perf_event *comm_event, *mmap_event, *fork_event;
|
||||
int err = -1;
|
||||
|
||||
if (machine__is_default_guest(machine))
|
||||
return 0;
|
||||
|
||||
comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
|
||||
if (comm_event == NULL)
|
||||
goto out;
|
||||
|
||||
mmap_event = malloc(sizeof(mmap_event->mmap) + machine->id_hdr_size);
|
||||
if (mmap_event == NULL)
|
||||
goto out_free_comm;
|
||||
|
||||
fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
|
||||
if (fork_event == NULL)
|
||||
goto out_free_mmap;
|
||||
|
||||
snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
|
||||
proc = opendir(proc_path);
|
||||
|
||||
if (proc == NULL)
|
||||
goto out_free_fork;
|
||||
|
||||
while (!readdir_r(proc, &dirent, &next) && next) {
|
||||
char *end;
|
||||
pid_t pid = strtol(dirent.d_name, &end, 10);
|
||||
|
||||
if (*end) /* only interested in proper numerical dirents */
|
||||
continue;
|
||||
/*
|
||||
* We may race with exiting thread, so don't stop just because
|
||||
* one thread couldn't be synthesized.
|
||||
*/
|
||||
__event__synthesize_thread(comm_event, mmap_event, fork_event, pid,
|
||||
1, process, tool, machine, mmap_data);
|
||||
}
|
||||
|
||||
err = 0;
|
||||
closedir(proc);
|
||||
out_free_fork:
|
||||
free(fork_event);
|
||||
out_free_mmap:
|
||||
free(mmap_event);
|
||||
out_free_comm:
|
||||
free(comm_event);
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
struct process_symbol_args {
|
||||
const char *name;
|
||||
u64 start;
|
||||
};
|
||||
|
||||
static int find_symbol_cb(void *arg, const char *name, char type,
|
||||
u64 start)
|
||||
{
|
||||
struct process_symbol_args *args = arg;
|
||||
|
||||
/*
|
||||
* Must be a function or at least an alias, as in PARISC64, where "_text" is
|
||||
* an 'A' to the same address as "_stext".
|
||||
*/
|
||||
if (!(symbol_type__is_a(type, MAP__FUNCTION) ||
|
||||
type == 'A') || strcmp(name, args->name))
|
||||
return 0;
|
||||
|
||||
args->start = start;
|
||||
return 1;
|
||||
}
|
||||
|
||||
u64 kallsyms__get_function_start(const char *kallsyms_filename,
|
||||
const char *symbol_name)
|
||||
{
|
||||
struct process_symbol_args args = { .name = symbol_name, };
|
||||
|
||||
if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
|
||||
return 0;
|
||||
|
||||
return args.start;
|
||||
}
|
||||
|
||||
int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
|
||||
perf_event__handler_t process,
|
||||
struct machine *machine)
|
||||
{
|
||||
size_t size;
|
||||
const char *mmap_name;
|
||||
char name_buff[PATH_MAX];
|
||||
struct map *map;
|
||||
struct kmap *kmap;
|
||||
int err;
|
||||
union perf_event *event;
|
||||
|
||||
if (machine->vmlinux_maps[0] == NULL)
|
||||
return -1;
|
||||
|
||||
/*
|
||||
* We should get this from /sys/kernel/sections/.text, but till that is
|
||||
* available use this, and after it is use this as a fallback for older
|
||||
* kernels.
|
||||
*/
|
||||
event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
|
||||
if (event == NULL) {
|
||||
pr_debug("Not enough memory synthesizing mmap event "
|
||||
"for kernel modules\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff));
|
||||
if (machine__is_host(machine)) {
|
||||
/*
|
||||
* kernel uses PERF_RECORD_MISC_USER for user space maps,
|
||||
* see kernel/perf_event.c __perf_event_mmap
|
||||
*/
|
||||
event->header.misc = PERF_RECORD_MISC_KERNEL;
|
||||
} else {
|
||||
event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
|
||||
}
|
||||
|
||||
map = machine->vmlinux_maps[MAP__FUNCTION];
|
||||
kmap = map__kmap(map);
|
||||
size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
|
||||
"%s%s", mmap_name, kmap->ref_reloc_sym->name) + 1;
|
||||
size = PERF_ALIGN(size, sizeof(u64));
|
||||
event->mmap.header.type = PERF_RECORD_MMAP;
|
||||
event->mmap.header.size = (sizeof(event->mmap) -
|
||||
(sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
|
||||
event->mmap.pgoff = kmap->ref_reloc_sym->addr;
|
||||
event->mmap.start = map->start;
|
||||
event->mmap.len = map->end - event->mmap.start;
|
||||
event->mmap.pid = machine->pid;
|
||||
|
||||
err = process(tool, event, &synth_sample, machine);
|
||||
free(event);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
|
||||
{
|
||||
const char *s;
|
||||
|
||||
if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
|
||||
s = " exec";
|
||||
else
|
||||
s = "";
|
||||
|
||||
return fprintf(fp, "%s: %s:%d\n", s, event->comm.comm, event->comm.tid);
|
||||
}
|
||||
|
||||
int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_comm_event(machine, event, sample);
|
||||
}
|
||||
|
||||
int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_lost_event(machine, event, sample);
|
||||
}
|
||||
|
||||
size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
|
||||
{
|
||||
return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64 "]: %c %s\n",
|
||||
event->mmap.pid, event->mmap.tid, event->mmap.start,
|
||||
event->mmap.len, event->mmap.pgoff,
|
||||
(event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
|
||||
event->mmap.filename);
|
||||
}
|
||||
|
||||
size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
|
||||
{
|
||||
return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
|
||||
" %02x:%02x %"PRIu64" %"PRIu64"]: %c%c%c%c %s\n",
|
||||
event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
|
||||
event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
|
||||
event->mmap2.min, event->mmap2.ino,
|
||||
event->mmap2.ino_generation,
|
||||
(event->mmap2.prot & PROT_READ) ? 'r' : '-',
|
||||
(event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
|
||||
(event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
|
||||
(event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
|
||||
event->mmap2.filename);
|
||||
}
|
||||
|
||||
int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_mmap_event(machine, event, sample);
|
||||
}
|
||||
|
||||
int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_mmap2_event(machine, event, sample);
|
||||
}
|
||||
|
||||
size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
|
||||
{
|
||||
return fprintf(fp, "(%d:%d):(%d:%d)\n",
|
||||
event->fork.pid, event->fork.tid,
|
||||
event->fork.ppid, event->fork.ptid);
|
||||
}
|
||||
|
||||
int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_fork_event(machine, event, sample);
|
||||
}
|
||||
|
||||
int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_exit_event(machine, event, sample);
|
||||
}
|
||||
|
||||
size_t perf_event__fprintf(union perf_event *event, FILE *fp)
|
||||
{
|
||||
size_t ret = fprintf(fp, "PERF_RECORD_%s",
|
||||
perf_event__name(event->header.type));
|
||||
|
||||
switch (event->header.type) {
|
||||
case PERF_RECORD_COMM:
|
||||
ret += perf_event__fprintf_comm(event, fp);
|
||||
break;
|
||||
case PERF_RECORD_FORK:
|
||||
case PERF_RECORD_EXIT:
|
||||
ret += perf_event__fprintf_task(event, fp);
|
||||
break;
|
||||
case PERF_RECORD_MMAP:
|
||||
ret += perf_event__fprintf_mmap(event, fp);
|
||||
break;
|
||||
case PERF_RECORD_MMAP2:
|
||||
ret += perf_event__fprintf_mmap2(event, fp);
|
||||
break;
|
||||
default:
|
||||
ret += fprintf(fp, "\n");
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int perf_event__process(struct perf_tool *tool __maybe_unused,
|
||||
union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine)
|
||||
{
|
||||
return machine__process_event(machine, event, sample);
|
||||
}
|
||||
|
||||
void thread__find_addr_map(struct thread *thread,
|
||||
struct machine *machine, u8 cpumode,
|
||||
enum map_type type, u64 addr,
|
||||
struct addr_location *al)
|
||||
{
|
||||
struct map_groups *mg = thread->mg;
|
||||
bool load_map = false;
|
||||
|
||||
al->machine = machine;
|
||||
al->thread = thread;
|
||||
al->addr = addr;
|
||||
al->cpumode = cpumode;
|
||||
al->filtered = 0;
|
||||
|
||||
if (machine == NULL) {
|
||||
al->map = NULL;
|
||||
return;
|
||||
}
|
||||
|
||||
if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
|
||||
al->level = 'k';
|
||||
mg = &machine->kmaps;
|
||||
load_map = true;
|
||||
} else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
|
||||
al->level = '.';
|
||||
} else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
|
||||
al->level = 'g';
|
||||
mg = &machine->kmaps;
|
||||
load_map = true;
|
||||
} else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
|
||||
al->level = 'u';
|
||||
} else {
|
||||
al->level = 'H';
|
||||
al->map = NULL;
|
||||
|
||||
if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
|
||||
cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
|
||||
!perf_guest)
|
||||
al->filtered |= (1 << HIST_FILTER__GUEST);
|
||||
if ((cpumode == PERF_RECORD_MISC_USER ||
|
||||
cpumode == PERF_RECORD_MISC_KERNEL) &&
|
||||
!perf_host)
|
||||
al->filtered |= (1 << HIST_FILTER__HOST);
|
||||
|
||||
return;
|
||||
}
|
||||
try_again:
|
||||
al->map = map_groups__find(mg, type, al->addr);
|
||||
if (al->map == NULL) {
|
||||
/*
|
||||
* If this is outside of all known maps, and is a negative
|
||||
* address, try to look it up in the kernel dso, as it might be
|
||||
* a vsyscall or vdso (which executes in user-mode).
|
||||
*
|
||||
* XXX This is nasty, we should have a symbol list in the
|
||||
* "[vdso]" dso, but for now lets use the old trick of looking
|
||||
* in the whole kernel symbol list.
|
||||
*/
|
||||
if (cpumode == PERF_RECORD_MISC_USER && machine &&
|
||||
mg != &machine->kmaps &&
|
||||
machine__kernel_ip(machine, al->addr)) {
|
||||
mg = &machine->kmaps;
|
||||
load_map = true;
|
||||
goto try_again;
|
||||
}
|
||||
} else {
|
||||
/*
|
||||
* Kernel maps might be changed when loading symbols so loading
|
||||
* must be done prior to using kernel maps.
|
||||
*/
|
||||
if (load_map)
|
||||
map__load(al->map, machine->symbol_filter);
|
||||
al->addr = al->map->map_ip(al->map, al->addr);
|
||||
}
|
||||
}
|
||||
|
||||
void thread__find_addr_location(struct thread *thread, struct machine *machine,
|
||||
u8 cpumode, enum map_type type, u64 addr,
|
||||
struct addr_location *al)
|
||||
{
|
||||
thread__find_addr_map(thread, machine, cpumode, type, addr, al);
|
||||
if (al->map != NULL)
|
||||
al->sym = map__find_symbol(al->map, al->addr,
|
||||
machine->symbol_filter);
|
||||
else
|
||||
al->sym = NULL;
|
||||
}
|
||||
|
||||
int perf_event__preprocess_sample(const union perf_event *event,
|
||||
struct machine *machine,
|
||||
struct addr_location *al,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
|
||||
struct thread *thread = machine__findnew_thread(machine, sample->pid,
|
||||
sample->tid);
|
||||
|
||||
if (thread == NULL)
|
||||
return -1;
|
||||
|
||||
dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
|
||||
/*
|
||||
* Have we already created the kernel maps for this machine?
|
||||
*
|
||||
* This should have happened earlier, when we processed the kernel MMAP
|
||||
* events, but for older perf.data files there was no such thing, so do
|
||||
* it now.
|
||||
*/
|
||||
if (cpumode == PERF_RECORD_MISC_KERNEL &&
|
||||
machine->vmlinux_maps[MAP__FUNCTION] == NULL)
|
||||
machine__create_kernel_maps(machine);
|
||||
|
||||
thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
|
||||
sample->ip, al);
|
||||
dump_printf(" ...... dso: %s\n",
|
||||
al->map ? al->map->dso->long_name :
|
||||
al->level == 'H' ? "[hypervisor]" : "<not found>");
|
||||
|
||||
if (thread__is_filtered(thread))
|
||||
al->filtered |= (1 << HIST_FILTER__THREAD);
|
||||
|
||||
al->sym = NULL;
|
||||
al->cpu = sample->cpu;
|
||||
|
||||
if (al->map) {
|
||||
struct dso *dso = al->map->dso;
|
||||
|
||||
if (symbol_conf.dso_list &&
|
||||
(!dso || !(strlist__has_entry(symbol_conf.dso_list,
|
||||
dso->short_name) ||
|
||||
(dso->short_name != dso->long_name &&
|
||||
strlist__has_entry(symbol_conf.dso_list,
|
||||
dso->long_name))))) {
|
||||
al->filtered |= (1 << HIST_FILTER__DSO);
|
||||
}
|
||||
|
||||
al->sym = map__find_symbol(al->map, al->addr,
|
||||
machine->symbol_filter);
|
||||
}
|
||||
|
||||
if (symbol_conf.sym_list &&
|
||||
(!al->sym || !strlist__has_entry(symbol_conf.sym_list,
|
||||
al->sym->name))) {
|
||||
al->filtered |= (1 << HIST_FILTER__SYMBOL);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool is_bts_event(struct perf_event_attr *attr)
|
||||
{
|
||||
return attr->type == PERF_TYPE_HARDWARE &&
|
||||
(attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
|
||||
attr->sample_period == 1;
|
||||
}
|
||||
|
||||
bool sample_addr_correlates_sym(struct perf_event_attr *attr)
|
||||
{
|
||||
if (attr->type == PERF_TYPE_SOFTWARE &&
|
||||
(attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
|
||||
attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
|
||||
attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
|
||||
return true;
|
||||
|
||||
if (is_bts_event(attr))
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
void perf_event__preprocess_sample_addr(union perf_event *event,
|
||||
struct perf_sample *sample,
|
||||
struct machine *machine,
|
||||
struct thread *thread,
|
||||
struct addr_location *al)
|
||||
{
|
||||
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
|
||||
|
||||
thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
|
||||
sample->addr, al);
|
||||
if (!al->map)
|
||||
thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
|
||||
sample->addr, al);
|
||||
|
||||
al->cpu = sample->cpu;
|
||||
al->sym = NULL;
|
||||
|
||||
if (al->map)
|
||||
al->sym = map__find_symbol(al->map, al->addr, NULL);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue