linux-kernel - [tip: perf/core] perf expr: Make expr_

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Message-ID: <158462705032.28353.2819488994049030835.tip-bot2@tip-bot2>
Date:   Thu, 19 Mar 2020 14:10:50 -0000
From:   "tip-bot2 for Jiri Olsa" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Jiri Olsa <jolsa@...nel.org>, Andi Kleen <ak@...ux.intel.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: perf/core] perf expr: Make expr__parse() return -1 on error

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     d942815a76463fa53b81d3d1c064f76bb3f80ead
Gitweb:        https://git.kernel.org/tip/d942815a76463fa53b81d3d1c064f76bb3f80ead
Author:        Jiri Olsa <jolsa@...nel.org>
AuthorDate:    Fri, 28 Feb 2020 10:36:16 +01:00
Committer:     Arnaldo Carvalho de Melo <acme@...hat.com>
CommitterDate: Mon, 09 Mar 2020 21:43:25 -03:00

perf expr: Make expr__parse() return -1 on error

To match the error value of the expr__find_other function, so all
exported expr functions return the same values:
0 on success, -1 on error.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: John Garry <john.garry@...wei.com>
Cc: Kajol Jain <kjain@...ux.ibm.com>
Cc: Michael Petlan <mpetlan@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Link: http://lore.kernel.org/lkml/20200228093616.67125-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/tests/expr.c | 4 ++--
 tools/perf/util/expr.c  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c
index 755d73c..28313e5 100644
--- a/tools/perf/tests/expr.c
+++ b/tools/perf/tests/expr.c
@@ -45,11 +45,11 @@ int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
 
 	p = "FOO/0";
 	ret = expr__parse(&val, &ctx, p);
-	TEST_ASSERT_VAL("division by zero", ret == 1);
+	TEST_ASSERT_VAL("division by zero", ret == -1);
 
 	p = "BAR/";
 	ret = expr__parse(&val, &ctx, p);
-	TEST_ASSERT_VAL("missing operand", ret == 1);
+	TEST_ASSERT_VAL("missing operand", ret == -1);
 
 	TEST_ASSERT_VAL("find other",
 			expr__find_other("FOO + BAR + BAZ + BOZO", "FOO", &other, &num_other) == 0);
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index 45b2553..fd192dd 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -54,7 +54,7 @@ __expr__parse(double *val, struct parse_ctx *ctx, const char *expr,
 
 int expr__parse(double *final_val, struct parse_ctx *ctx, const char *expr)
 {
-	return __expr__parse(final_val, ctx, expr, EXPR_PARSE);
+	return __expr__parse(final_val, ctx, expr, EXPR_PARSE) ? -1 : 0;
 }
 
 static bool