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Date: Fri, 24 Jan 2020 13:34:28 +0530
From: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To: acme@...nel.org, jolsa@...hat.com
Cc: namhyung@...nel.org, irogers@...gle.com, songliubraving@...com,
yao.jin@...ux.intel.com, linux-kernel@...r.kernel.org,
Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Subject: [PATCH v2 2/6] perf annotate: Simplify disasm_line allocation and freeing code
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@...ux.ibm.com>
---
tools/perf/util/annotate.c | 87 +++++++++++++-------------------------
tools/perf/util/annotate.h | 1 -
2 files changed, 29 insertions(+), 59 deletions(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index ea70bc050bce..a922bc7043d4 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -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 +1152,55 @@ 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 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 +1219,9 @@ void disasm_line__free(struct disasm_line *dl)
else
ins__delete(&dl->ops);
zfree(&dl->ins.name);
- annotation_line__delete(&dl->al);
+ free_srcline(dl->al.path);
+ zfree(&dl->al.line);
+ free(dl);
}
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
@@ -2152,11 +2125,9 @@ 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,
};
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index dade64781670..75c58a759b96 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -141,7 +141,6 @@ struct annotation_line {
u64 cycles;
u64 cycles_max;
u64 cycles_min;
- size_t privsize;
char *path;
u32 idx;
int idx_asm;
--
2.24.1
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