From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752676AbbCSPlz (ORCPT ); Thu, 19 Mar 2015 11:41:55 -0400 Received: from smtprelay0226.hostedemail.com ([216.40.44.226]:37949 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750732AbbCSPls (ORCPT ); Thu, 19 Mar 2015 11:41:48 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1431:1437:1515:1516:1518:1534:1538:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3350:3622:3865:3867:3868:3870:3871:3872:5007:6119:6120:6261:6742:7875:7901:7904:10004:10400:10848:10967:11232:11658:11914:12296:12517:12519:12740:13069:13311:13357:13972:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: prose95_66cd13d99f83f X-Filterd-Recvd-Size: 1817 Date: Thu, 19 Mar 2015 11:41:45 -0400 From: Steven Rostedt To: Alexei Starovoitov Cc: Ingo Molnar , Namhyung Kim , Arnaldo Carvalho de Melo , Jiri Olsa , Masami Hiramatsu , "David S. Miller" , Daniel Borkmann , Peter Zijlstra , linux-api@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v7 tip 3/8] tracing: allow BPF programs to call bpf_ktime_get_ns() Message-ID: <20150319114145.53f0755d@gandalf.local.home> In-Reply-To: <550AED5D.3010700@plumgrid.com> References: <1426542584-9406-1-git-send-email-ast@plumgrid.com> <1426542584-9406-4-git-send-email-ast@plumgrid.com> <20150319111124.38f53061@gandalf.local.home> <550AED5D.3010700@plumgrid.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 19 Mar 2015 08:38:05 -0700 Alexei Starovoitov wrote: > > Hmm, a nanosecond value returned as integer? Is there a way to make > > this a 64 bit return type, or is RET_INTEGER default to 64 bits in BPF > > functions? > > RET_INTEGER doesn't mean C 'int' width. It means non-pointer and > non-void value. The return value is always promoted to full > register width which is 64-bit. > OK. Reviewed-by: Steven Rostedt -- Steve