From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 09 Aug 2018 16:38:43 +0200 (CEST) Received: from mx3-rdu2.redhat.com ([66.187.233.73]:36316 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by eddie.linux-mips.org with ESMTP id S23994542AbeHIOiiy1Iot (ORCPT ); Thu, 9 Aug 2018 16:38:38 +0200 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 713E640216EB; Thu, 9 Aug 2018 14:38:32 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.34.27.30]) by smtp.corp.redhat.com (Postfix) with SMTP id E80482026D66; Thu, 9 Aug 2018 14:38:28 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Thu, 9 Aug 2018 16:38:32 +0200 (CEST) Date: Thu, 9 Aug 2018 16:38:28 +0200 From: Oleg Nesterov To: Ravi Bangoria Cc: srikar@linux.vnet.ibm.com, rostedt@goodmis.org, mhiramat@kernel.org, liu.song.a23@gmail.com, peterz@infradead.org, mingo@redhat.com, acme@kernel.org, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, linux-kernel@vger.kernel.org, ananth@linux.vnet.ibm.com, alexis.berlemont@gmail.com, naveen.n.rao@linux.vnet.ibm.com, linux-arm-kernel@lists.infradead.org, linux-mips@linux-mips.org, linux@armlinux.org.uk, ralf@linux-mips.org, paul.burton@mips.com Subject: Re: [PATCH v8 3/6] Uprobes: Support SDT markers having reference count (semaphore) Message-ID: <20180809143827.GC22636@redhat.com> References: <20180809041856.1547-1-ravi.bangoria@linux.ibm.com> <20180809041856.1547-4-ravi.bangoria@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180809041856.1547-4-ravi.bangoria@linux.ibm.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Thu, 09 Aug 2018 14:38:32 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Thu, 09 Aug 2018 14:38:32 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'oleg@redhat.com' RCPT:'' Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 65496 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: oleg@redhat.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips I need to read this (hopefully final) version carefully. I'll try to do this before next Monday. just one note, On 08/09, Ravi Bangoria wrote: > > +static void delayed_uprobe_remove(struct uprobe *uprobe, struct mm_struct *mm) > +{ > + struct list_head *pos, *q; > + struct delayed_uprobe *du; > + > + if (!uprobe && !mm) > + return; > + > + list_for_each_safe(pos, q, &delayed_uprobe_list) { > + du = list_entry(pos, struct delayed_uprobe, list); > + > + if (uprobe && mm && du->uprobe == uprobe && du->mm == mm) > + delayed_uprobe_delete(du); > + else if (!uprobe && du->mm == mm) > + delayed_uprobe_delete(du); > + else if (!mm && du->uprobe == uprobe) > + delayed_uprobe_delete(du); > + } Sorry, I can't resist... this doesn't look very nice. How about list_for_each_safe(pos, q, &delayed_uprobe_list) { du = list_entry(pos, struct delayed_uprobe, list); if (uprobe && du->uprobe != uprobe) continue; if (mm && du->mm != mm) continue; delayed_uprobe_delete(); } I won't insist, this is cosmetic after all, but please consider this change in case you will need to send v9. Oleg. From mboxrd@z Thu Jan 1 00:00:00 1970 From: oleg@redhat.com (Oleg Nesterov) Date: Thu, 9 Aug 2018 16:38:28 +0200 Subject: [PATCH v8 3/6] Uprobes: Support SDT markers having reference count (semaphore) In-Reply-To: <20180809041856.1547-4-ravi.bangoria@linux.ibm.com> References: <20180809041856.1547-1-ravi.bangoria@linux.ibm.com> <20180809041856.1547-4-ravi.bangoria@linux.ibm.com> Message-ID: <20180809143827.GC22636@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org I need to read this (hopefully final) version carefully. I'll try to do this before next Monday. just one note, On 08/09, Ravi Bangoria wrote: > > +static void delayed_uprobe_remove(struct uprobe *uprobe, struct mm_struct *mm) > +{ > + struct list_head *pos, *q; > + struct delayed_uprobe *du; > + > + if (!uprobe && !mm) > + return; > + > + list_for_each_safe(pos, q, &delayed_uprobe_list) { > + du = list_entry(pos, struct delayed_uprobe, list); > + > + if (uprobe && mm && du->uprobe == uprobe && du->mm == mm) > + delayed_uprobe_delete(du); > + else if (!uprobe && du->mm == mm) > + delayed_uprobe_delete(du); > + else if (!mm && du->uprobe == uprobe) > + delayed_uprobe_delete(du); > + } Sorry, I can't resist... this doesn't look very nice. How about list_for_each_safe(pos, q, &delayed_uprobe_list) { du = list_entry(pos, struct delayed_uprobe, list); if (uprobe && du->uprobe != uprobe) continue; if (mm && du->mm != mm) continue; delayed_uprobe_delete(); } I won't insist, this is cosmetic after all, but please consider this change in case you will need to send v9. Oleg.