Re: [PATCH 02/19] perf metric: Add expr__add_id function

kajoljain
2020-07-26T09:17:08Z

On 7/19/20 11:43 PM, Jiri Olsa wrote:
> Adding expr__add_id function to data for ID
> with zero value, which is used when scanning
> the expression for IDs.
>

Reviewed-By : Kajol Jain<kjain@linux.ibm.com>

Thanks,
Kajol Jain

> Acked-by: Ian Rogers <irogers@google.com>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
> tools/perf/util/expr.c | 31 +++++++++++++++++++++++++------
> tools/perf/util/expr.h | 1 +
> tools/perf/util/expr.y | 2 +-
> 3 files changed, 27 insertions(+), 7 deletions(-)
>
> diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> index 578a173d4873..9228f60e2a20 100644
> --- a/tools/perf/util/expr.c
> +++ b/tools/perf/util/expr.c
> @@ -32,6 +32,26 @@ static bool key_equal(const void *key1, const void *key2,
> return !strcmp((const char *)key1, (const char *)key2);
> }
>
> +/* Caller must make sure id is allocated */
> +int expr__add_id(struct expr_parse_ctx *ctx, const char *id)
> +{
> + struct expr_id_data *data_ptr = NULL, *old_data = NULL;
> + char *old_key = NULL;
> + int ret;
> +
> + data_ptr = malloc(sizeof(*data_ptr));
> + if (!data_ptr)
> + return -ENOMEM;
> +
> + ret = hashmap__set(&ctx->ids, id, data_ptr,
> + (const void **)&old_key, (void **)&old_data);
> + if (ret)
> + free(data_ptr);
> + free(old_key);
> + free(old_data);
> + return ret;
> +}
> +
> /* Caller must make sure id is allocated */
> int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val)
> {
> @@ -39,12 +59,11 @@ int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val)
> char *old_key = NULL;
> int ret;
>
> - if (val != 0.0) {
> - data_ptr = malloc(sizeof(*data_ptr));
> - if (!data_ptr)
> - return -ENOMEM;
> - data_ptr->val = val;
> - }
> + data_ptr = malloc(sizeof(*data_ptr));
> + if (!data_ptr)
> + return -ENOMEM;
> + data_ptr->val = val;
> +
> ret = hashmap__set(&ctx->ids, id, data_ptr,
> (const void **)&old_key, (void **)&old_data);
> if (ret)
> diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h
> index 21fe5bd85718..ac32cda42006 100644
> --- a/tools/perf/util/expr.h
> +++ b/tools/perf/util/expr.h
> @@ -26,6 +26,7 @@ struct expr_scanner_ctx {
>
> void expr__ctx_init(struct expr_parse_ctx *ctx);
> void expr__ctx_clear(struct expr_parse_ctx *ctx);
> +int expr__add_id(struct expr_parse_ctx *ctx, const char *id);
> int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val);
> int expr__get_id(struct expr_parse_ctx *ctx, const char *id, double *val_ptr);
> int expr__parse(double *final_val, struct expr_parse_ctx *ctx,
> diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
> index b2b3420ea6ec..8befe4a46f87 100644
> --- a/tools/perf/util/expr.y
> +++ b/tools/perf/util/expr.y
> @@ -69,7 +69,7 @@ all_other: all_other other
>
> other: ID
> {
> - expr__add_id_val(ctx, $1, 0.0);
> + expr__add_id(ctx, $1);
> }
> |
> MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/' | '%' | '(' | ')' | ','
>