[PATCH 23/26] perf expr: Add expr_ prefix for parse_ctx and parse_id

[PATCH 23/26] perf expr: Add expr_ prefix for parse_ctx and parse_id

[Arnaldo Carvalho de Melo]

From: Jiri Olsa <jolsa@kernel.org>

Adding expr_ prefix for parse_ctx and parse_id, to straighten out the
expr* namespace.

There's no functional change.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Mamatha Inamdar <mamatha4@linux.vnet.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20200401203340.31402-2-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/tests/expr.c       |  4 ++--
 tools/perf/util/expr.c        | 10 +++++-----
 tools/perf/util/expr.h        | 12 ++++++------
 tools/perf/util/expr.y        |  6 +++---
 tools/perf/util/stat-shadow.c |  2 +-
 5 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c
index 28313e59d6f6..ea10fc4412c4 100644
--- a/tools/perf/tests/expr.c
+++ b/tools/perf/tests/expr.c
@@ -6,7 +6,7 @@
 #include <string.h>
 #include <linux/zalloc.h>
 
-static int test(struct parse_ctx *ctx, const char *e, double val2)
+static int test(struct expr_parse_ctx *ctx, const char *e, double val2)
 {
 	double val;
 
@@ -22,7 +22,7 @@ int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
 	const char **other;
 	double val;
 	int i, ret;
-	struct parse_ctx ctx;
+	struct expr_parse_ctx ctx;
 	int num_other;
 
 	expr__ctx_init(&ctx);
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index fd192ddf93c1..c8ccc548a585 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -11,7 +11,7 @@ extern int expr_debug;
 #endif
 
 /* Caller must make sure id is allocated */
-void expr__add_id(struct parse_ctx *ctx, const char *name, double val)
+void expr__add_id(struct expr_parse_ctx *ctx, const char *name, double val)
 {
 	int idx;
 
@@ -21,13 +21,13 @@ void expr__add_id(struct parse_ctx *ctx, const char *name, double val)
 	ctx->ids[idx].val = val;
 }
 
-void expr__ctx_init(struct parse_ctx *ctx)
+void expr__ctx_init(struct expr_parse_ctx *ctx)
 {
 	ctx->num_ids = 0;
 }
 
 static int
-__expr__parse(double *val, struct parse_ctx *ctx, const char *expr,
+__expr__parse(double *val, struct expr_parse_ctx *ctx, const char *expr,
 	      int start)
 {
 	YY_BUFFER_STATE buffer;
@@ -52,7 +52,7 @@ __expr__parse(double *val, struct parse_ctx *ctx, const char *expr,
 	return ret;
 }
 
-int expr__parse(double *final_val, struct parse_ctx *ctx, const char *expr)
+int expr__parse(double *final_val, struct expr_parse_ctx *ctx, const char *expr)
 {
 	return __expr__parse(final_val, ctx, expr, EXPR_PARSE) ? -1 : 0;
 }
@@ -75,7 +75,7 @@ int expr__find_other(const char *expr, const char *one, const char ***other,
 		     int *num_other)
 {
 	int err, i = 0, j = 0;
-	struct parse_ctx ctx;
+	struct expr_parse_ctx ctx;
 
 	expr__ctx_init(&ctx);
 	err = __expr__parse(NULL, &ctx, expr, EXPR_OTHER);
diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
index 9377538f4097..b9e53f2b5844 100644
--- a/tools/perf/util/expr.h
+++ b/tools/perf/util/expr.h
@@ -5,19 +5,19 @@
 #define EXPR_MAX_OTHER 20
 #define MAX_PARSE_ID EXPR_MAX_OTHER
 
-struct parse_id {
+struct expr_parse_id {
 	const char *name;
 	double val;
 };
 
-struct parse_ctx {
+struct expr_parse_ctx {
 	int num_ids;
-	struct parse_id ids[MAX_PARSE_ID];
+	struct expr_parse_id ids[MAX_PARSE_ID];
 };
 
-void expr__ctx_init(struct parse_ctx *ctx);
-void expr__add_id(struct parse_ctx *ctx, const char *id, double val);
-int expr__parse(double *final_val, struct parse_ctx *ctx, const char *expr);
+void expr__ctx_init(struct expr_parse_ctx *ctx);
+void expr__add_id(struct expr_parse_ctx *ctx, const char *id, double val);
+int expr__parse(double *final_val, struct expr_parse_ctx *ctx, const char *expr);
 int expr__find_other(const char *expr, const char *one, const char ***other,
 		int *num_other);
 
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index 4720cbe79357..cd17486c1c5d 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -15,7 +15,7 @@
 %define api.pure full
 
 %parse-param { double *final_val }
-%parse-param { struct parse_ctx *ctx }
+%parse-param { struct expr_parse_ctx *ctx }
 %parse-param {void *scanner}
 %lex-param {void* scanner}
 
@@ -39,14 +39,14 @@
 
 %{
 static void expr_error(double *final_val __maybe_unused,
-		       struct parse_ctx *ctx __maybe_unused,
+		       struct expr_parse_ctx *ctx __maybe_unused,
 		       void *scanner,
 		       const char *s)
 {
 	pr_debug("%s\n", s);
 }
 
-static int lookup_id(struct parse_ctx *ctx, char *id, double *val)
+static int lookup_id(struct expr_parse_ctx *ctx, char *id, double *val)
 {
 	int i;
 
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 03ecb8cd0eec..1ad5c5be7e97 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -729,7 +729,7 @@ static void generic_metric(struct perf_stat_config *config,
 			   struct runtime_stat *st)
 {
 	print_metric_t print_metric = out->print_metric;
-	struct parse_ctx pctx;
+	struct expr_parse_ctx pctx;
 	double ratio, scale;
 	int i;
 	void *ctxp = out->ctx;
-- 
2.21.1

[PATCH 24/26] perf expr: Add expr_scanner_ctx object

[Arnaldo Carvalho de Melo]

From: Jiri Olsa <jolsa@kernel.org>

Add the expr_scanner_ctx object to hold user data for the expr scanner.
Currently it holds only start_token, Kajol Jain will use it to hold 24x7
runtime param.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Mamatha Inamdar <mamatha4@linux.vnet.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20200401203340.31402-3-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/expr.c |  6 ++++--
 tools/perf/util/expr.h |  4 ++++
 tools/perf/util/expr.l | 10 +++++-----
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index c8ccc548a585..c3382d58cf40 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -3,7 +3,6 @@
 #include <assert.h>
 #include "expr.h"
 #include "expr-bison.h"
-#define YY_EXTRA_TYPE int
 #include "expr-flex.h"
 
 #ifdef PARSER_DEBUG
@@ -30,11 +29,14 @@ static int
 __expr__parse(double *val, struct expr_parse_ctx *ctx, const char *expr,
 	      int start)
 {
+	struct expr_scanner_ctx scanner_ctx = {
+		.start_token = start,
+	};
 	YY_BUFFER_STATE buffer;
 	void *scanner;
 	int ret;
 
-	ret = expr_lex_init_extra(start, &scanner);
+	ret = expr_lex_init_extra(&scanner_ctx, &scanner);
 	if (ret)
 		return ret;
 
diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
index b9e53f2b5844..0938ad166ece 100644
--- a/tools/perf/util/expr.h
+++ b/tools/perf/util/expr.h
@@ -15,6 +15,10 @@ struct expr_parse_ctx {
 	struct expr_parse_id ids[MAX_PARSE_ID];
 };
 
+struct expr_scanner_ctx {
+	int start_token;
+};
+
 void expr__ctx_init(struct expr_parse_ctx *ctx);
 void expr__add_id(struct expr_parse_ctx *ctx, const char *id, double val);
 int expr__parse(double *final_val, struct expr_parse_ctx *ctx, const char *expr);
diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l
index eaad29243c23..2582c2464938 100644
--- a/tools/perf/util/expr.l
+++ b/tools/perf/util/expr.l
@@ -76,13 +76,13 @@ sym		[0-9a-zA-Z_\.:@]+
 symbol		{spec}*{sym}*{spec}*{sym}*
 
 %%
-	{
-		int start_token;
+	struct expr_scanner_ctx *sctx = expr_get_extra(yyscanner);
 
-		start_token = expr_get_extra(yyscanner);
+	{
+		int start_token = sctx->start_token;
 
-		if (start_token) {
-			expr_set_extra(NULL, yyscanner);
+		if (sctx->start_token) {
+			sctx->start_token = 0;
 			return start_token;
 		}
 	}
-- 
2.21.1

[PATCH 25/26] perf metrictroup: Split the metricgroup__add_metric function

[Arnaldo Carvalho de Melo]

From: Kajol Jain <kjain@linux.ibm.com>

This patch refactors metricgroup__add_metric function where some part of
it move to function metricgroup__add_metric_param.  No logic change.

Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Mamatha Inamdar <mamatha4@linux.vnet.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20200401203340.31402-4-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/metricgroup.c | 60 ++++++++++++++++++++---------------
 1 file changed, 35 insertions(+), 25 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 926449a7cdbf..7ad81c8177ea 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -485,6 +485,39 @@ static bool metricgroup__has_constraint(struct pmu_event *pe)
 	return false;
 }
 
+static int __metricgroup__add_metric(struct strbuf *events,
+			struct list_head *group_list, struct pmu_event *pe)
+{
+
+	const char **ids;
+	int idnum;
+	struct egroup *eg;
+
+	if (expr__find_other(pe->metric_expr, NULL, &ids, &idnum) < 0)
+		return -EINVAL;
+
+	if (events->len > 0)
+		strbuf_addf(events, ",");
+
+	if (metricgroup__has_constraint(pe))
+		metricgroup__add_metric_non_group(events, ids, idnum);
+	else
+		metricgroup__add_metric_weak_group(events, ids, idnum);
+
+	eg = malloc(sizeof(*eg));
+	if (!eg)
+		return -ENOMEM;
+
+	eg->ids = ids;
+	eg->idnum = idnum;
+	eg->metric_name = pe->metric_name;
+	eg->metric_expr = pe->metric_expr;
+	eg->metric_unit = pe->unit;
+	list_add_tail(&eg->nd, group_list);
+
+	return 0;
+}
+
 static int metricgroup__add_metric(const char *metric, struct strbuf *events,
 				   struct list_head *group_list)
 {
@@ -504,35 +537,12 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
 			continue;
 		if (match_metric(pe->metric_group, metric) ||
 		    match_metric(pe->metric_name, metric)) {
-			const char **ids;
-			int idnum;
-			struct egroup *eg;
 
 			pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
 
-			if (expr__find_other(pe->metric_expr,
-					     NULL, &ids, &idnum) < 0)
-				continue;
-			if (events->len > 0)
-				strbuf_addf(events, ",");
-
-			if (metricgroup__has_constraint(pe))
-				metricgroup__add_metric_non_group(events, ids, idnum);
-			else
-				metricgroup__add_metric_weak_group(events, ids, idnum);
-
-			eg = malloc(sizeof(struct egroup));
-			if (!eg) {
-				ret = -ENOMEM;
+			ret = __metricgroup__add_metric(events,	group_list, pe);
+			if (ret == -ENOMEM)
 				break;
-			}
-			eg->ids = ids;
-			eg->idnum = idnum;
-			eg->metric_name = pe->metric_name;
-			eg->metric_expr = pe->metric_expr;
-			eg->metric_unit = pe->unit;
-			list_add_tail(&eg->nd, group_list);
-			ret = 0;
 		}
 	}
 	return ret;
-- 
2.21.1