Some events are dependent on firmware/kernel enablement. Allow such
events to be detected when the metric is parsed so that the metric's
event parsing doesn't fail.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Sohom Datta <sohomdatta1@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20230623151016.4193660-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
TEST_ASSERT_VAL("source count", hashmap__size(ctx->ids) == 1);
TEST_ASSERT_VAL("source count", hashmap__find(ctx->ids, "EVENT1", &val_ptr));
+ /* has_event returns 1 when an event exists. */
+ expr__add_id_val(ctx, strdup("cycles"), 2);
+ ret = test(ctx, "has_event(cycles)", 1);
+
expr__ctx_free(ctx);
return 0;
#include "cpumap.h"
#include "cputopo.h"
#include "debug.h"
+#include "evlist.h"
#include "expr.h"
#include "expr-bison.h"
#include "expr-flex.h"
pr_debug2("literal: %s = %f\n", literal, result);
return result;
}
+
+/* Does the event 'id' parse? Determine via ctx->ids if possible. */
+double expr__has_event(const struct expr_parse_ctx *ctx, bool compute_ids, const char *id)
+{
+ struct evlist *tmp;
+ double ret;
+
+ if (hashmap__find(ctx->ids, id, /*value=*/NULL))
+ return 1.0;
+
+ if (!compute_ids)
+ return 0.0;
+
+ tmp = evlist__new();
+ if (!tmp)
+ return NAN;
+ ret = parse_event(tmp, id) ? 0 : 1;
+ evlist__delete(tmp);
+ return ret;
+}
double expr_id_data__value(const struct expr_id_data *data);
double expr_id_data__source_count(const struct expr_id_data *data);
double expr__get_literal(const char *literal, const struct expr_scanner_ctx *ctx);
+double expr__has_event(const struct expr_parse_ctx *ctx, bool compute_ids, const char *id);
#endif
if { return IF; }
else { return ELSE; }
source_count { return SOURCE_COUNT; }
+has_event { return HAS_EVENT; }
{literal} { return literal(yyscanner, sctx); }
{number} { return value(yyscanner); }
{symbol} { return str(yyscanner, ID, sctx->runtime); }
} ids;
}
-%token ID NUMBER MIN MAX IF ELSE LITERAL D_RATIO SOURCE_COUNT EXPR_ERROR
+%token ID NUMBER MIN MAX IF ELSE LITERAL D_RATIO SOURCE_COUNT HAS_EVENT EXPR_ERROR
%left MIN MAX IF
%left '|'
%left '^'
}
| ID { $$ = handle_id(ctx, $1, compute_ids, /*source_count=*/false); }
| SOURCE_COUNT '(' ID ')' { $$ = handle_id(ctx, $3, compute_ids, /*source_count=*/true); }
+| HAS_EVENT '(' ID ')'
+{
+ $$.val = expr__has_event(ctx, compute_ids, $3);
+ $$.ids = NULL;
+ free($3);
+}
| expr '|' expr
{
if (is_const($1.val) && is_const($3.val)) {