linux-kernel - [PATCH v9 03/13] perf expr: Remove unused headers and inline d

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Date:   Thu, 23 Sep 2021 00:46:06 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        Paul Clarke <pc@...ibm.com>, kajoljain <kjain@...ux.ibm.com>,
        linux-perf-users@...r.kernel.org
Cc:     Stephane Eranian <eranian@...gle.com>,
        Sandeep Dasgupta <sdasgup@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH v9 03/13] perf expr: Remove unused headers and inline d_ratio

No functional change. Inlining d_ratio makes it easier to special case
for constants in a later patch.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/expr.y | 22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)

diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index 41c9cd4efadd..e6005450feae 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -2,23 +2,10 @@
 %{
 #define YYDEBUG 1
 #include <math.h>
-#include <stdio.h>
-#include "util.h"
 #include "util/debug.h"
-#include <stdlib.h> // strtod()
+#include "smt.h"
 #define IN_EXPR_Y 1
 #include "expr.h"
-#include "smt.h"
-#include <string.h>
-
-static double d_ratio(double val0, double val1)
-{
-	if (val1 == 0) {
-		return 0;
-	}
-	return  val0 / val1;
-}
-
 %}
 
 %define api.pure full
@@ -120,7 +107,12 @@ expr:	  NUMBER
 	| MIN '(' expr ',' expr ')' { $$ = $3 < $5 ? $3 : $5; }
 	| MAX '(' expr ',' expr ')' { $$ = $3 > $5 ? $3 : $5; }
 	| SMT_ON		 { $$ = smt_on() > 0; }
-	| D_RATIO '(' expr ',' expr ')' { $$ = d_ratio($3,$5); }
+	| D_RATIO '(' expr ',' expr ')' { if ($5 == 0) {
+						$$ = 0;
+					  } else {
+						$$ = $3 / $5;
+					  }
+					}
 	;
 
 %%
-- 
2.33.0.464.g1972c5931b-goog