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Date: Wed, 10 Nov 2021 16:21:08 -0800
From: Ian Rogers <irogers@...gle.com>
To: Andi Kleen <ak@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
John Garry <john.garry@...wei.com>,
Kajol Jain <kjain@...ux.ibm.com>,
"Paul A . Clarke" <pc@...ibm.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Riccardo Mancini <rickyman7@...il.com>,
Kan Liang <kan.liang@...ux.intel.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Madhavan Srinivasan <maddy@...ux.ibm.com>,
Song Liu <song@...nel.org>, Wan Jiabing <wanjiabing@...o.com>,
Yury Norov <yury.norov@...il.com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Ian Rogers <irogers@...gle.com>
Subject: [PATCH v2 7/8] perf expr: Move ID handling to its own function
This will facilitate sharing in a follow-on change.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/util/expr.y | 60 ++++++++++++++++++++++++------------------
1 file changed, 34 insertions(+), 26 deletions(-)
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index ba6c6dbf30c8..d90addf9b937 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -3,6 +3,7 @@
#define YYDEBUG 1
#include <assert.h>
#include <math.h>
+#include <stdlib.h>
#include "util/debug.h"
#define IN_EXPR_Y 1
#include "expr.h"
@@ -82,6 +83,38 @@ static struct ids union_expr(struct ids ids1, struct ids ids2)
return result;
}
+static struct ids handle_id(struct expr_parse_ctx *ctx, char *id,
+ bool compute_ids)
+{
+ struct ids result;
+ if (!compute_ids) {
+ /*
+ * Compute the event's value from ID. If the ID isn't known then
+ * it isn't used to compute the formula so set to NAN.
+ */
+ struct expr_id_data *data;
+
+ result.val = NAN;
+ if (expr__resolve_id(ctx, id, &data) == 0)
+ result.val = expr_id_data__value(data);
+
+ result.ids = NULL;
+ free(id);
+ } else {
+ /*
+ * Set the value to BOTTOM to show that any value is possible
+ * when the event is computed. Create a set of just the ID.
+ */
+ result.val = BOTTOM;
+ result.ids = ids__new();
+ if (!result.ids || ids__insert(result.ids, id)) {
+ pr_err("Error creating IDs for '%s'", id);
+ free(id);
+ }
+ }
+ return result;
+}
+
/*
* If we're not computing ids or $1 and $3 are constants, compute the new
* constant value using OP. Its invariant that there are no ids. If computing
@@ -167,32 +200,7 @@ expr: NUMBER
$$.val = $1;
$$.ids = NULL;
}
-| ID
-{
- if (!compute_ids) {
- /*
- * Compute the event's value from ID. If the ID isn't known then
- * it isn't used to compute the formula so set to NAN.
- */
- struct expr_id_data *data;
-
- $$.val = NAN;
- if (expr__resolve_id(ctx, $1, &data) == 0)
- $$.val = expr_id_data__value(data);
-
- $$.ids = NULL;
- free($1);
- } else {
- /*
- * Set the value to BOTTOM to show that any value is possible
- * when the event is computed. Create a set of just the ID.
- */
- $$.val = BOTTOM;
- $$.ids = ids__new();
- if (!$$.ids || ids__insert($$.ids, $1))
- YYABORT;
- }
-}
+| ID { $$ = handle_id(ctx, $1, compute_ids); }
| expr '|' expr { BINARY_LONG_OP($$, |, $1, $3); }
| expr '&' expr { BINARY_LONG_OP($$, &, $1, $3); }
| expr '^' expr { BINARY_LONG_OP($$, ^, $1, $3); }
--
2.34.0.rc1.387.gb447b232ab-goog
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