From: Arnaldo Carvalho de Melo Date: Wed, 16 Nov 2016 18:39:50 +0000 (-0300) Subject: perf annotate: Start supporting cross arch annotation X-Git-Tag: v4.14-rc1~1961^2~8^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=786c1b51844d858041166057c0c79e93c2015013;p=platform%2Fkernel%2Flinux-rpi.git perf annotate: Start supporting cross arch annotation Introduce a 'struct arch', where arch specific stuff will live, starting with objdump's choice of comment delimitation character, that is '#' in x86 while a ';' in arm. This has some bits and pieces from a patch submitted by Ravi. Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Chris Riyder Cc: David Ahern Cc: Jiri Olsa Cc: Kim Phillips Cc: Markus Trippelsdorf Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Pawel Moll Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Taeung Song Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-f337tzjjcl8vtapgvjxmhrbx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index fe3af95..3df4178 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -130,7 +130,7 @@ static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he) return err; } - err = symbol__disassemble(sym, map, 0); + err = symbol__disassemble(sym, map, NULL, 0); if (err == 0) { out_assign: top->sym_filter_entry = he; diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index 4c18271..e6e9f7d 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -1050,7 +1050,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, (nr_pcnt - 1); } - err = symbol__disassemble(sym, map, sizeof_bdl); + err = symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), sizeof_bdl); if (err) { char msg[BUFSIZ]; symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg)); diff --git a/tools/perf/ui/gtk/annotate.c b/tools/perf/ui/gtk/annotate.c index 42d3199..8c9308ac 100644 --- a/tools/perf/ui/gtk/annotate.c +++ b/tools/perf/ui/gtk/annotate.c @@ -167,7 +167,7 @@ static int symbol__gtk_annotate(struct symbol *sym, struct map *map, if (map->dso->annotate_warned) return -1; - err = symbol__disassemble(sym, map, 0); + err = symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0); if (err) { char msg[BUFSIZ]; symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg)); diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index aeb5a44..1ba41a2 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -18,9 +18,11 @@ #include "annotate.h" #include "evsel.h" #include "block-range.h" +#include "arch/common.h" #include #include #include +#include const char *disassembler_style; const char *objdump_path; @@ -29,6 +31,28 @@ static regex_t file_lineno; static struct ins *ins__find(const char *name); static int disasm_line__parse(char *line, char **namep, char **rawp); +struct arch { + const char *name; + struct { + char comment_char; + } objdump; +}; + +static struct arch architectures[] = { + { + .name = "arm", + .objdump = { + .comment_char = ';', + }, + }, + { + .name = "x86", + .objdump = { + .comment_char = '#', + }, + }, +}; + static void ins__delete(struct ins_operands *ops) { if (ops == NULL) @@ -54,7 +78,7 @@ int ins__scnprintf(struct ins *ins, char *bf, size_t size, return ins__raw_scnprintf(ins, bf, size, ops); } -static int call__parse(struct ins_operands *ops, struct map *map) +static int call__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map) { char *endptr, *tok, *name; @@ -118,7 +142,7 @@ bool ins__is_call(const struct ins *ins) return ins->ops == &call_ops; } -static int jump__parse(struct ins_operands *ops, struct map *map __maybe_unused) +static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused) { const char *s = strchr(ops->raw, '+'); @@ -173,7 +197,7 @@ static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) return 0; } -static int lock__parse(struct ins_operands *ops, struct map *map) +static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map) { char *name; @@ -194,7 +218,7 @@ static int lock__parse(struct ins_operands *ops, struct map *map) return 0; if (ops->locked.ins->ops->parse && - ops->locked.ins->ops->parse(ops->locked.ops, map) < 0) + ops->locked.ins->ops->parse(arch, ops->locked.ops, map) < 0) goto out_free_ops; return 0; @@ -237,7 +261,7 @@ static struct ins_ops lock_ops = { .scnprintf = lock__scnprintf, }; -static int mov__parse(struct ins_operands *ops, struct map *map __maybe_unused) +static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused) { char *s = strchr(ops->raw, ','), *target, *comment, prev; @@ -252,11 +276,7 @@ static int mov__parse(struct ins_operands *ops, struct map *map __maybe_unused) return -1; target = ++s; -#ifdef __arm__ - comment = strchr(s, ';'); -#else - comment = strchr(s, '#'); -#endif + comment = strchr(s, arch->objdump.comment_char); if (comment != NULL) s = comment - 1; @@ -304,7 +324,7 @@ static struct ins_ops mov_ops = { .scnprintf = mov__scnprintf, }; -static int dec__parse(struct ins_operands *ops, struct map *map __maybe_unused) +static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused) { char *target, *comment, *s, prev; @@ -492,6 +512,41 @@ static struct ins *ins__find(const char *name) return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp); } +static int arch__key_cmp(const void *name, const void *archp) +{ + const struct arch *arch = archp; + + return strcmp(name, arch->name); +} + +static int arch__cmp(const void *a, const void *b) +{ + const struct arch *aa = a; + const struct arch *ab = b; + + return strcmp(aa->name, ab->name); +} + +static void arch__sort(void) +{ + const int nmemb = ARRAY_SIZE(architectures); + + qsort(architectures, nmemb, sizeof(struct arch), arch__cmp); +} + +static struct arch *arch__find(const char *name) +{ + const int nmemb = ARRAY_SIZE(architectures); + static bool sorted; + + if (!sorted) { + arch__sort(); + sorted = true; + } + + return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp); +} + int symbol__alloc_hist(struct symbol *sym) { struct annotation *notes = symbol__annotation(sym); @@ -709,7 +764,7 @@ int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip) return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip); } -static void disasm_line__init_ins(struct disasm_line *dl, struct map *map) +static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map) { dl->ins = ins__find(dl->name); @@ -719,7 +774,7 @@ static void disasm_line__init_ins(struct disasm_line *dl, struct map *map) if (!dl->ins->ops) return; - if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops, map) < 0) + if (dl->ins->ops->parse && dl->ins->ops->parse(arch, &dl->ops, map) < 0) dl->ins = NULL; } @@ -762,6 +817,7 @@ out_free_name: static struct disasm_line *disasm_line__new(s64 offset, char *line, size_t privsize, int line_nr, + struct arch *arch, struct map *map) { struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); @@ -777,7 +833,7 @@ static struct disasm_line *disasm_line__new(s64 offset, char *line, if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0) goto out_free_line; - disasm_line__init_ins(dl, map); + disasm_line__init_ins(dl, arch, map); } } @@ -1087,6 +1143,7 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st * The ops.raw part will be parsed further according to type of the instruction. */ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, + struct arch *arch, FILE *file, size_t privsize, int *line_nr) { @@ -1149,7 +1206,7 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, parsed_line = tmp2 + 1; } - dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, map); + dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map); free(line); (*line_nr)++; @@ -1280,10 +1337,23 @@ fallback: return 0; } -int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize) +static const char *annotate__norm_arch(const char *arch_name) +{ + struct utsname uts; + + if (!arch_name) { /* Assume we are annotating locally. */ + if (uname(&uts) < 0) + return NULL; + arch_name = uts.machine; + } + return normalize_arch((char *)arch_name); +} + +int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize) { struct dso *dso = map->dso; char command[PATH_MAX * 2]; + struct arch *arch = NULL; FILE *file; char symfs_filename[PATH_MAX]; struct kcore_extract kce; @@ -1297,6 +1367,14 @@ int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize) if (err) return err; + arch_name = annotate__norm_arch(arch_name); + if (!arch_name) + return -1; + + arch = arch__find(arch_name); + if (arch == NULL) + return -ENOTSUP; + pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, symfs_filename, sym->name, map->unmap_ip(map, sym->start), map->unmap_ip(map, sym->end)); @@ -1395,7 +1473,7 @@ int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize) nline = 0; while (!feof(file)) { - if (symbol__parse_objdump_line(sym, map, file, privsize, + if (symbol__parse_objdump_line(sym, map, arch, file, privsize, &lineno) < 0) break; nline++; @@ -1793,7 +1871,7 @@ int symbol__tty_annotate(struct symbol *sym, struct map *map, struct rb_root source_line = RB_ROOT; u64 len; - if (symbol__disassemble(sym, map, 0) < 0) + if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0) return -1; len = symbol__size(sym); diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 5bbcec1..8e490b5 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -34,9 +34,11 @@ struct ins_operands { }; }; +struct arch; + struct ins_ops { void (*free)(struct ins_operands *ops); - int (*parse)(struct ins_operands *ops, struct map *map); + int (*parse)(struct arch *arch, struct ins_operands *ops, struct map *map); int (*scnprintf)(struct ins *ins, char *bf, size_t size, struct ins_operands *ops); }; @@ -156,7 +158,7 @@ int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 addr); int symbol__alloc_hist(struct symbol *sym); void symbol__annotate_zero_histograms(struct symbol *sym); -int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize); +int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize); enum symbol_disassemble_errno { SYMBOL_ANNOTATE_ERRNO__SUCCESS = 0,