From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AC95C10DCE for ; Thu, 12 Mar 2020 10:53:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61AF720737 for ; Thu, 12 Mar 2020 10:53:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BPcPXBcX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727024AbgCLKw7 (ORCPT ); Thu, 12 Mar 2020 06:52:59 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:37250 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726044AbgCLKw6 (ORCPT ); Thu, 12 Mar 2020 06:52:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584010377; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Qh0eXeonMgy20ck7YawIUlc8xJ7ukIA09ot5F0zPtg4=; b=BPcPXBcXMDiLhTIirLez1u3855R0hn2v5Z8En8r7jqz/Gm6tbCvSu8c3hb/DyccNcY0d2F IARAID12KJdc49dJeTdm85O7SSiCffg2zpxu3B0HuxAWm1PzKDw8wBezJF4pmbnP94CHpt I7qmJxIxZbnbKRUnZYX5Nzsgam6T5do= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-140-KYVpkvHxM6yhQfbW7eF_NQ-1; Thu, 12 Mar 2020 06:52:55 -0400 X-MC-Unique: KYVpkvHxM6yhQfbW7eF_NQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D8FA3800D5B; Thu, 12 Mar 2020 10:52:52 +0000 (UTC) Received: from krava (ovpn-204-40.brq.redhat.com [10.40.204.40]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3C307388; Thu, 12 Mar 2020 10:52:44 +0000 (UTC) Date: Thu, 12 Mar 2020 11:52:31 +0100 From: Jiri Olsa To: Kajol Jain Cc: acme@kernel.org, linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, sukadev@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, anju@linux.vnet.ibm.com, maddy@linux.vnet.ibm.com, ravi.bangoria@linux.ibm.com, peterz@infradead.org, yao.jin@linux.intel.com, ak@linux.intel.com, jolsa@kernel.org, kan.liang@linux.intel.com, jmario@redhat.com, alexander.shishkin@linux.intel.com, mingo@kernel.org, paulus@ozlabs.org, namhyung@kernel.org, mpetlan@redhat.com, gregkh@linuxfoundation.org, benh@kernel.crashing.org, mamatha4@linux.vnet.ibm.com, mark.rutland@arm.com, tglx@linutronix.de Subject: Re: [PATCH v4 6/8] perf/tools: Enhance JSON/metric infrastructure to handle "?" Message-ID: <20200312105231.GE311223@krava> References: <20200309062552.29911-1-kjain@linux.ibm.com> <20200309062552.29911-7-kjain@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200309062552.29911-7-kjain@linux.ibm.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 09, 2020 at 11:55:50AM +0530, Kajol Jain wrote: SNIP > diff --git a/tools/perf/util/expr.h b/tools/perf/util/expr.h > index 9377538f4097..d17664e628db 100644 > --- a/tools/perf/util/expr.h > +++ b/tools/perf/util/expr.h > @@ -15,6 +15,7 @@ struct parse_ctx { > struct parse_id ids[MAX_PARSE_ID]; > }; > > +int expr__runtimeparam; > 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); > diff --git a/tools/perf/util/expr.l b/tools/perf/util/expr.l > index 1928f2a3dddc..ec4b00671f67 100644 > --- a/tools/perf/util/expr.l > +++ b/tools/perf/util/expr.l > @@ -45,6 +45,21 @@ static char *normalize(char *str) > *dst++ = '/'; > else if (*str == '\\') > *dst++ = *++str; > + else if (*str == '?') { > + > + int size = snprintf(NULL, 0, "%d", expr__runtimeparam); > + char * paramval = (char *)malloc(size); can't we agree that any reasonable number in here wouldn't cross 20 bytes in string or so and use buffer for that instead of that malloc exercise? thanks, jirka > + int i = 0; > + > + if(!paramval) > + *dst++ = '0'; > + else { > + sprintf(paramval, "%d", expr__runtimeparam); > + while(i < size) > + *dst++ = paramval[i++]; > + free(paramval); > + } > + } SNIP