From mboxrd@z Thu Jan 1 00:00:00 1970 From: otavio@ossystems.com.br (Otavio Salvador) Date: Mon, 4 Nov 2013 15:37:41 -0200 Subject: [lttng-dev] lttng-modules build failure for 3.12-rc6 In-Reply-To: <468459233.56635.1383586483940.JavaMail.zimbra@efficios.com> References: <1567008261.54443.1383229577346.JavaMail.zimbra@efficios.com> <544819642.54467.1383230288963.JavaMail.zimbra@efficios.com> <1328648078.54590.1383242720354.JavaMail.zimbra@efficios.com> <468459233.56635.1383586483940.JavaMail.zimbra@efficios.com> Message-ID: On Mon, Nov 4, 2013 at 3:34 PM, Mathieu Desnoyers wrote: > ----- Original Message ----- >> From: "Otavio Salvador" >> To: "Mathieu Desnoyers" >> Cc: "lttng-dev" >> Sent: Thursday, October 31, 2013 2:21:21 PM >> Subject: Re: lttng-modules build failure for 3.12-rc6 >> >> On Thu, Oct 31, 2013 at 4:05 PM, Mathieu Desnoyers >> wrote: >> ... >> >> >> Great; can you backport those to stable-2.3? I'd like to send the >> >> >> update for Yocto including these changes and fix it for us directly >> >> >> there. >> >> > >> >> > Strictly speaking, supporting a new kernel can be seen as a new feature. >> >> > stable-2.3 was released for 3.11. Moreover, 3.12 kernel is still in rc >> >> > stage, so things can still change (and even be reverted, this has >> >> > happened >> >> > in the past). >> >> > >> >> > Unfortunately, we don't add features in the stable branches, only bug >> >> > fixes. But keep in mind that 2.4 should come within the coming weeks. >> >> >> >> Humm in this case stable-2.3 should had a #warning saying it support >> >> kernels up to 3.11 only. As it does not state it somewhere it seems >> >> like a fix for me. >> >> >> >> I will end doing the backport in this case, but it is something which >> >> could be fixed for 2.4 than and include such warning. >> > >> > I just discussed this with David and Julien, and here is what we came up >> > with: >> > >> > - when a final kernel release comes up (e.g. 3.12), it makes sense to add >> > support for it into a stable release if the modifications are small, >> > - however, it does not make sense to add support for a release candidate >> > Linux kernel, since those are known to change a lot during the RC cycle, >> > (chasing a moving target is never fun) >> > >> > Therefore, I'd be open to cherry-pick the master commits into stable-2.3 >> > when 3.12 final comes out. I don't promise I'll remember to do so, so a >> > gentle "ping" when 3.12 final comes out to remind me which commit ID I >> > should cherry-pick from master into stable-2.3 would be welcome, >> >> Right; it is fine with me. We're close to it as we're in 3.12-rc7. > > FYI, I just pushed 3.12 linux kernel support in lttng-modules master and stable-2.3 branches. Please let me know if you see any issue. Great; thanks. -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9981-7854 Mobile: +1 (347) 903-9750