From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 07/15] perf tools: Dedup events in expression parsing Date: Wed, 23 Aug 2017 16:36:06 -0300 Message-ID: <20170823193614.20394-8-acme@kernel.org> References: <20170823193614.20394-1-acme@kernel.org> Return-path: In-Reply-To: <20170823193614.20394-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Andi Kleen , Arnaldo Carvalho de Melo List-Id: linux-perf-users.vger.kernel.org From: Andi Kleen Avoid adding redundant events while parsing an expression. When we add an "other" event check first if it already exists. v2: Fix perf test failure. Signed-off-by: Andi Kleen Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/20170811232634.30465-10-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/expr.y | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index 5753c4f21534..432b8560cf51 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -181,6 +181,19 @@ void expr__ctx_init(struct parse_ctx *ctx) ctx->num_ids = 0; } +static bool already_seen(const char *val, const char *one, const char **other, + int num_other) +{ + int i; + + if (one && !strcasecmp(one, val)) + return true; + for (i = 0; i < num_other; i++) + if (!strcasecmp(other[i], val)) + return true; + return false; +} + int expr__find_other(const char *p, const char *one, const char ***other, int *num_otherp) { @@ -200,7 +213,7 @@ int expr__find_other(const char *p, const char *one, const char ***other, err = 0; break; } - if (tok == ID && (!one || strcasecmp(one, val.id))) { + if (tok == ID && !already_seen(val.id, one, *other, num_other)) { if (num_other >= EXPR_MAX_OTHER - 1) { pr_debug("Too many extra events in %s\n", orig); break; -- 2.13.5