#include "debug.h"
#include "annotate.h"
#include "evsel.h"
+#include "block-range.h"
#include <regex.h>
#include <pthread.h>
#include <linux/bitops.h>
return ins__raw_scnprintf(ins, bf, size, ops);
}
-static int call__parse(struct ins_operands *ops)
+static int call__parse(struct ins_operands *ops, struct map *map)
{
char *endptr, *tok, *name;
return ops->target.name == NULL ? -1 : 0;
indirect_call:
- tok = strchr(endptr, '(');
- if (tok != NULL) {
- ops->target.addr = 0;
+ tok = strchr(endptr, '*');
+ if (tok == NULL) {
+ struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
+ if (sym != NULL)
+ ops->target.name = strdup(sym->name);
+ else
+ ops->target.addr = 0;
return 0;
}
- tok = strchr(endptr, '*');
- if (tok == NULL)
- return -1;
-
ops->target.addr = strtoull(tok + 1, NULL, 16);
return 0;
}
return ins->ops == &call_ops;
}
-static int jump__parse(struct ins_operands *ops)
+static int jump__parse(struct ins_operands *ops, struct map *map __maybe_unused)
{
const char *s = strchr(ops->raw, '+');
return 0;
}
-static int lock__parse(struct ins_operands *ops)
+static int lock__parse(struct ins_operands *ops, struct map *map)
{
char *name;
return 0;
if (ops->locked.ins->ops->parse &&
- ops->locked.ins->ops->parse(ops->locked.ops) < 0)
+ ops->locked.ins->ops->parse(ops->locked.ops, map) < 0)
goto out_free_ops;
return 0;
.scnprintf = lock__scnprintf,
};
-static int mov__parse(struct ins_operands *ops)
+static int mov__parse(struct ins_operands *ops, struct map *map __maybe_unused)
{
char *s = strchr(ops->raw, ','), *target, *comment, prev;
.scnprintf = mov__scnprintf,
};
-static int dec__parse(struct ins_operands *ops)
+static int dec__parse(struct ins_operands *ops, struct map *map __maybe_unused)
{
char *target, *comment, *s, prev;
return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp);
}
-int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
-{
- struct annotation *notes = symbol__annotation(sym);
- pthread_mutex_init(¬es->lock, NULL);
- return 0;
-}
-
int symbol__alloc_hist(struct symbol *sym)
{
struct annotation *notes = symbol__annotation(sym);
return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
}
-static void disasm_line__init_ins(struct disasm_line *dl)
+static void disasm_line__init_ins(struct disasm_line *dl, struct map *map)
{
dl->ins = ins__find(dl->name);
if (!dl->ins->ops)
return;
- if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
+ if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops, map) < 0)
dl->ins = NULL;
}
}
static struct disasm_line *disasm_line__new(s64 offset, char *line,
- size_t privsize, int line_nr)
+ size_t privsize, int line_nr,
+ struct map *map)
{
struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
goto out_free_line;
- disasm_line__init_ins(dl);
+ disasm_line__init_ins(dl, map);
}
}
return percent;
}
+static const char *annotate__address_color(struct block_range *br)
+{
+ double cov = block_range__coverage(br);
+
+ if (cov >= 0) {
+ /* mark red for >75% coverage */
+ if (cov > 0.75)
+ return PERF_COLOR_RED;
+
+ /* mark dull for <1% coverage */
+ if (cov < 0.01)
+ return PERF_COLOR_NORMAL;
+ }
+
+ return PERF_COLOR_MAGENTA;
+}
+
+static const char *annotate__asm_color(struct block_range *br)
+{
+ double cov = block_range__coverage(br);
+
+ if (cov >= 0) {
+ /* mark dull for <1% coverage */
+ if (cov < 0.01)
+ return PERF_COLOR_NORMAL;
+ }
+
+ return PERF_COLOR_BLUE;
+}
+
+static void annotate__branch_printf(struct block_range *br, u64 addr)
+{
+ bool emit_comment = true;
+
+ if (!br)
+ return;
+
+#if 1
+ if (br->is_target && br->start == addr) {
+ struct block_range *branch = br;
+ double p;
+
+ /*
+ * Find matching branch to our target.
+ */
+ while (!branch->is_branch)
+ branch = block_range__next(branch);
+
+ p = 100 *(double)br->entry / branch->coverage;
+
+ if (p > 0.1) {
+ if (emit_comment) {
+ emit_comment = false;
+ printf("\t#");
+ }
+
+ /*
+ * The percentage of coverage joined at this target in relation
+ * to the next branch.
+ */
+ printf(" +%.2f%%", p);
+ }
+ }
+#endif
+ if (br->is_branch && br->end == addr) {
+ double p = 100*(double)br->taken / br->coverage;
+
+ if (p > 0.1) {
+ if (emit_comment) {
+ emit_comment = false;
+ printf("\t#");
+ }
+
+ /*
+ * The percentage of coverage leaving at this branch, and
+ * its prediction ratio.
+ */
+ printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken);
+ }
+ }
+}
+
+
static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
int max_lines, struct disasm_line *queue)
s64 offset = dl->offset;
const u64 addr = start + offset;
struct disasm_line *next;
+ struct block_range *br;
next = disasm__get_next_ip_line(¬es->src->source, dl);
}
printf(" : ");
- color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
- color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
+
+ br = block_range__find(addr);
+ color_fprintf(stdout, annotate__address_color(br), " %" PRIx64 ":", addr);
+ color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line);
+ annotate__branch_printf(br, addr);
+ printf("\n");
if (ppercents != &percent)
free(ppercents);
parsed_line = tmp2 + 1;
}
- dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
+ dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, map);
free(line);
(*line_nr)++;
.addr = dl->ops.target.addr,
};
- if (!map_groups__find_ams(&target, NULL) &&
+ if (!map_groups__find_ams(&target) &&
target.sym->start == target.al_addr)
dl->ops.target.name = strdup(target.sym->name);
}
}
}
-int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
+int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
+ int errnum, char *buf, size_t buflen)
{
struct dso *dso = map->dso;
- char *filename = dso__build_id_filename(dso, NULL, 0);
- bool free_filename = true;
- char command[PATH_MAX * 2];
- FILE *file;
- int err = 0;
- char symfs_filename[PATH_MAX];
- struct kcore_extract kce;
- bool delete_extract = false;
- int lineno = 0;
- int nline;
- if (filename)
- symbol__join_symfs(symfs_filename, filename);
+ BUG_ON(buflen == 0);
+
+ if (errnum >= 0) {
+ str_error_r(errnum, buf, buflen);
+ return 0;
+ }
+
+ switch (errnum) {
+ case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
+ char bf[SBUILD_ID_SIZE + 15] = " with build id ";
+ char *build_id_msg = NULL;
- if (filename == NULL) {
if (dso->has_build_id) {
- pr_err("Can't annotate %s: not enough memory\n",
- sym->name);
- return -ENOMEM;
+ build_id__sprintf(dso->build_id,
+ sizeof(dso->build_id), bf + 15);
+ build_id_msg = bf;
}
+ scnprintf(buf, buflen,
+ "No vmlinux file%s\nwas found in the path.\n\n"
+ "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
+ "Please use:\n\n"
+ " perf buildid-cache -vu vmlinux\n\n"
+ "or:\n\n"
+ " --vmlinux vmlinux\n", build_id_msg ?: "");
+ }
+ break;
+ default:
+ scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
+ break;
+ }
+
+ return 0;
+}
+
+static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
+{
+ char linkname[PATH_MAX];
+ char *build_id_filename;
+
+ if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
+ !dso__is_kcore(dso))
+ return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
+
+ build_id_filename = dso__build_id_filename(dso, NULL, 0);
+ if (build_id_filename) {
+ __symbol__join_symfs(filename, filename_size, build_id_filename);
+ free(build_id_filename);
+ } else {
+ if (dso->has_build_id)
+ return ENOMEM;
goto fallback;
- } else if (dso__is_kcore(dso)) {
- goto fallback;
- } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
- strstr(command, DSO__NAME_KALLSYMS) ||
- access(symfs_filename, R_OK)) {
- free(filename);
+ }
+
+ if (dso__is_kcore(dso) ||
+ readlink(filename, linkname, sizeof(linkname)) < 0 ||
+ strstr(linkname, DSO__NAME_KALLSYMS) ||
+ access(filename, R_OK)) {
fallback:
/*
* If we don't have build-ids or the build-id file isn't in the
* cache, or is just a kallsyms file, well, lets hope that this
* DSO is the same as when 'perf record' ran.
*/
- filename = (char *)dso->long_name;
- symbol__join_symfs(symfs_filename, filename);
- free_filename = false;
+ __symbol__join_symfs(filename, filename_size, dso->long_name);
}
- if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
- !dso__is_kcore(dso)) {
- char bf[SBUILD_ID_SIZE + 15] = " with build id ";
- char *build_id_msg = NULL;
+ return 0;
+}
- if (dso->annotate_warned)
- goto out_free_filename;
+int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize)
+{
+ struct dso *dso = map->dso;
+ char command[PATH_MAX * 2];
+ FILE *file;
+ char symfs_filename[PATH_MAX];
+ struct kcore_extract kce;
+ bool delete_extract = false;
+ int stdout_fd[2];
+ int lineno = 0;
+ int nline;
+ pid_t pid;
+ int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
- if (dso->has_build_id) {
- build_id__sprintf(dso->build_id,
- sizeof(dso->build_id), bf + 15);
- build_id_msg = bf;
- }
- err = -ENOENT;
- dso->annotate_warned = 1;
- pr_err("Can't annotate %s:\n\n"
- "No vmlinux file%s\nwas found in the path.\n\n"
- "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
- "Please use:\n\n"
- " perf buildid-cache -vu vmlinux\n\n"
- "or:\n\n"
- " --vmlinux vmlinux\n",
- sym->name, build_id_msg ?: "");
- goto out_free_filename;
- }
+ if (err)
+ return err;
pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
- filename, sym->name, map->unmap_ip(map, sym->start),
+ symfs_filename, sym->name, map->unmap_ip(map, sym->start),
map->unmap_ip(map, sym->end));
pr_debug("annotating [%p] %30s : [%p] %30s\n",
delete_extract = true;
strlcpy(symfs_filename, kce.extract_filename,
sizeof(symfs_filename));
- if (free_filename) {
- free(filename);
- free_filename = false;
- }
- filename = symfs_filename;
}
} else if (dso__needs_decompress(dso)) {
char tmp[PATH_MAX];
bool ret;
if (kmod_path__parse_ext(&m, symfs_filename))
- goto out_free_filename;
+ goto out;
snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
fd = mkstemp(tmp);
if (fd < 0) {
free(m.ext);
- goto out_free_filename;
+ goto out;
}
ret = decompress_to_file(m.ext, symfs_filename, fd);
close(fd);
if (!ret)
- goto out_free_filename;
+ goto out;
strcpy(symfs_filename, tmp);
}
map__rip_2objdump(map, sym->end),
symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
symbol_conf.annotate_src ? "-S" : "",
- symfs_filename, filename);
+ symfs_filename, symfs_filename);
pr_debug("Executing: %s\n", command);
- file = popen(command, "r");
+ err = -1;
+ if (pipe(stdout_fd) < 0) {
+ pr_err("Failure creating the pipe to run %s\n", command);
+ goto out_remove_tmp;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ pr_err("Failure forking to run %s\n", command);
+ goto out_close_stdout;
+ }
+
+ if (pid == 0) {
+ close(stdout_fd[0]);
+ dup2(stdout_fd[1], 1);
+ close(stdout_fd[1]);
+ execl("/bin/sh", "sh", "-c", command, NULL);
+ perror(command);
+ exit(-1);
+ }
+
+ close(stdout_fd[1]);
+
+ file = fdopen(stdout_fd[0], "r");
if (!file) {
- pr_err("Failure running %s\n", command);
+ pr_err("Failure creating FILE stream for %s\n", command);
/*
* If we were using debug info should retry with
* original binary.
if (dso__is_kcore(dso))
delete_last_nop(sym);
- pclose(file);
-
+ fclose(file);
+ err = 0;
out_remove_tmp:
+ close(stdout_fd[0]);
+
if (dso__needs_decompress(dso))
unlink(symfs_filename);
-out_free_filename:
+
if (delete_extract)
kcore_extract__delete(&kce);
- if (free_filename)
- free(filename);
+out:
return err;
+
+out_close_stdout:
+ close(stdout_fd[1]);
+ goto out_remove_tmp;
}
static void insert_source_line(struct rb_root *root, struct source_line *src_line)
struct rb_root source_line = RB_ROOT;
u64 len;
- if (symbol__annotate(sym, map, 0) < 0)
+ if (symbol__disassemble(sym, map, 0) < 0)
return -1;
len = symbol__size(sym);
projects / linux-2.6-block.git / blobdiff