[PATCH AUTOSEL for 4.14 012/100] perf annotate: Do not truncate instruction names at 6 chars

Sasha Levin
2018-01-28T22:26:11Z

From: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>

[ Upstream commit 05d0e62d9fa0f1002cf82009ef31b36174da5472 ]

There are many instructions, esp on PowerPC, whose mnemonics are longer
than 6 characters. Using precision limit causes truncation of such
mnemonics.

Fix this by removing precision limit. Note that, 'width' is still 6, so
alignment won't get affected for length <= 6.

Before:

li r11,-1
xscvdp vs1,vs1
add. r10,r10,r11

After:

li r11,-1
xscvdpsxds vs1,vs1
add. r10,r10,r11

Reported-by: Donald Stence <dstence@us.ibm.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20171114032540.4564-1-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
tools/perf/util/annotate.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index aa66791b1bfc..41d415707264 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -166,7 +166,7 @@ static void ins__delete(struct ins_operands *ops)
static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops)
{
- return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
+ return scnprintf(bf, size, "%-6s %s", ins->name, ops->raw);
}

int ins__scnprintf(struct ins *ins, char *bf, size_t size,
@@ -231,12 +231,12 @@ static int call__scnprintf(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops)
{
if (ops->target.name)
- return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
+ return scnprintf(bf, size, "%-6s %s", ins->name, ops->target.name);

if (ops->target.addr == 0)
return ins__raw_scnprintf(ins, bf, size, ops);

- return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
+ return scnprintf(bf, size, "%-6s *%" PRIx64, ins->name, ops->target.addr);
}

static struct ins_ops call_ops = {
@@ -300,7 +300,7 @@ static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
c++;
}

- return scnprintf(bf, size, "%-6.6s %.*s%" PRIx64,
+ return scnprintf(bf, size, "%-6s %.*s%" PRIx64,
ins->name, c ? c - ops->raw : 0, ops->raw,
ops->target.offset);
}
@@ -373,7 +373,7 @@ static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
if (ops->locked.ins.ops == NULL)
return ins__raw_scnprintf(ins, bf, size, ops);

- printed = scnprintf(bf, size, "%-6.6s ", ins->name);
+ printed = scnprintf(bf, size, "%-6s ", ins->name);
return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
size - printed, ops->locked.ops);
}
@@ -449,7 +449,7 @@ static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *m
static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops)
{
- return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
+ return scnprintf(bf, size, "%-6s %s,%s", ins->name,
ops->source.name ?: ops->source.raw,
ops->target.name ?: ops->target.raw);
}
@@ -489,7 +489,7 @@ static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops
static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops)
{
- return scnprintf(bf, size, "%-6.6s %s", ins->name,
+ return scnprintf(bf, size, "%-6s %s", ins->name,
ops->target.name ?: ops->target.raw);
}

@@ -501,7 +501,7 @@ static struct ins_ops dec_ops = {
static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
struct ins_operands *ops __maybe_unused)
{
- return scnprintf(bf, size, "%-6.6s", "nop");
+ return scnprintf(bf, size, "%-6s", "nop");
}

static struct ins_ops nop_ops = {
@@ -925,7 +925,7 @@ void disasm_line__free(struct disasm_line *dl)
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
{
if (raw || !dl->ins.ops)
- return scnprintf(bf, size, "%-6.6s %s", dl->ins.name, dl->ops.raw);
+ return scnprintf(bf, size, "%-6s %s", dl->ins.name, dl->ops.raw);

return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
}
--
2.11.0