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perf annotate: Simplify disasm_line allocation and freeing code

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We are allocating disasm_line object in annotation_line__new() instead
of disasm_line__new(). Similarly annotation_line__delete() is actually
freeing disasm_line object as well. This complexity is because of
privsize.  But we don't need privsize anymore so get rid of privsize and
simplify disasm_line allocation and freeing code.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lore.kernel.org/lkml/20200204045233.474937-3-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ravi Bangoria 2020-02-04 10:22:29 +05:30 committed by Arnaldo Carvalho de Melo
parent e0ad4d6854
commit 2316f861ae
2 changed files with 34 additions and 59 deletions
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92
tools/perf/util/annotate.c
View file

@ -1143,7 +1143,6 @@ static int disasm_line__parse(char *line, const char **namep, char **rawp)
}
struct annotate_args {
size_t privsize;
struct arch *arch;
struct map_symbol ms;
struct evsel *evsel;
@ -1153,83 +1152,61 @@ struct annotate_args {
int line_nr;
};
static void annotation_line__delete(struct annotation_line *al)
static void annotation_line__init(struct annotation_line *al,
struct annotate_args *args,
int nr)
{
void *ptr = (void *) al - al->privsize;
free_srcline(al->path);
zfree(&al->line);
free(ptr);
al->offset = args->offset;
al->line = strdup(args->line);
al->line_nr = args->line_nr;
al->data_nr = nr;
}
/*
* Allocating the annotation line data with following
* structure:
*
* --------------------------------------
* private space | struct annotation_line
* --------------------------------------
*
* Size of the private space is stored in 'struct annotation_line'.
*
*/
static struct annotation_line *
annotation_line__new(struct annotate_args *args, size_t privsize)
static void annotation_line__exit(struct annotation_line *al)
{
free_srcline(al->path);
zfree(&al->line);
}
static size_t disasm_line_size(int nr)
{
struct annotation_line *al;
struct evsel *evsel = args->evsel;
size_t size = privsize + sizeof(*al);
int nr = 1;
if (perf_evsel__is_group_event(evsel))
nr = evsel->core.nr_members;
size += sizeof(al->data[0]) * nr;
al = zalloc(size);
if (al) {
al = (void *) al + privsize;
al->privsize = privsize;
al->offset = args->offset;
al->line = strdup(args->line);
al->line_nr = args->line_nr;
al->data_nr = nr;
}
return al;
return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr));
}
/*
* Allocating the disasm annotation line data with
* following structure:
*
* ------------------------------------------------------------
* privsize space | struct disasm_line | struct annotation_line
* ------------------------------------------------------------
* -------------------------------------------
* struct disasm_line | struct annotation_line
* -------------------------------------------
*
* We have 'struct annotation_line' member as last member
* of 'struct disasm_line' to have an easy access.
*
*/
static struct disasm_line *disasm_line__new(struct annotate_args *args)
{
struct disasm_line *dl = NULL;
struct annotation_line *al;
size_t privsize = args->privsize + offsetof(struct disasm_line, al);
int nr = 1;
al = annotation_line__new(args, privsize);
if (al != NULL) {
dl = disasm_line(al);
if (perf_evsel__is_group_event(args->evsel))
nr = args->evsel->core.nr_members;
if (dl->al.line == NULL)
goto out_delete;
dl = zalloc(disasm_line_size(nr));
if (!dl)
return NULL;
if (args->offset != -1) {
if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
goto out_free_line;
annotation_line__init(&dl->al, args, nr);
if (dl->al.line == NULL)
goto out_delete;
disasm_line__init_ins(dl, args->arch, &args->ms);
}
if (args->offset != -1) {
if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
goto out_free_line;
disasm_line__init_ins(dl, args->arch, &args->ms);
}
return dl;
@ -1248,7 +1225,8 @@ void disasm_line__free(struct disasm_line *dl)
else
ins__delete(&dl->ops);
zfree(&dl->ins.name);
annotation_line__delete(&dl->al);
annotation_line__exit(&dl->al);
free(dl);
}
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
@ -2152,11 +2130,9 @@ void symbol__calc_percent(struct symbol *sym, struct evsel *evsel)
int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
struct annotation_options *options, struct arch **parch)
{
size_t privsize = 0;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct annotate_args args = {
.privsize = privsize,
.evsel = evsel,
.options = options,
};

1
tools/perf/util/annotate.h
View file

@ -139,7 +139,6 @@ struct annotation_line {
u64 cycles;
u64 cycles_max;
u64 cycles_min;
size_t privsize;
char *path;
u32 idx;
int idx_asm;