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perf expr: Add expr_scanner_ctx object

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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>
This commit is contained in:
Jiri Olsa 2020-04-02 02:03:35 +05:30 committed by Arnaldo Carvalho de Melo
parent aecce63e2b
commit 871f9f599d
3 changed files with 13 additions and 7 deletions
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6
tools/perf/util/expr.c
View File

@ -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;

4
tools/perf/util/expr.h
View File

@ -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);

10
tools/perf/util/expr.l
View File

@ -76,13 +76,13 @@ sym [0-9a-zA-Z_\.:@]+
symbol {spec}*{sym}*{spec}*{sym}*
%%
struct expr_scanner_ctx *sctx = expr_get_extra(yyscanner);
{
int start_token;
int start_token = sctx->start_token;
start_token = expr_get_extra(yyscanner);
if (start_token) {
expr_set_extra(NULL, yyscanner);
if (sctx->start_token) {
sctx->start_token = 0;
return start_token;
}
}