Re: Difficulties for compilation without extra optimisation

2017-12-04 Thread SF Markus Elfring
>> Will the compilation be a bit quicker when extra data processing >> could be omitted? > > Why would you care more about the time it takes to compile the kernel, > than the time it takes for executing it? I am also interested in the evolution of compilation time frames. > Benchmarks are all a

Re: Difficulties for compilation without extra optimisation

2017-12-04 Thread SF Markus Elfring
>> Can the software areas distinguished where such special handling matters? > > No idea. I would like to point another example out. > That's something you are going to have to figure out on your own. How do you think about information from an other clarification request for the topic “caif: U

Re: Difficulties for compilation without extra optimisation

2017-12-04 Thread Steven Rostedt
On Mon, 4 Dec 2017 10:00:54 +0100 SF Markus Elfring wrote: > > Why would you compile the kernel without optimization? > > Can another reason be occasionally still relevant? No. > > Will the compilation be a bit quicker when extra data processing > could be omitted? Why would you care more

Re: Difficulties for compilation without extra optimisation

2017-12-04 Thread SF Markus Elfring
> Why would you compile the kernel without optimization? Can another reason be occasionally still relevant? Will the compilation be a bit quicker when extra data processing could be omitted? > There's many places in the kernel that WILL NOT BUILD without optimization. Would you like to keep th

Re: Difficulties for compilation without extra optimisation

2017-12-03 Thread Steven Rostedt
On Sun, 3 Dec 2017 22:56:51 +0100 SF Markus Elfring wrote: > Can the software areas distinguished where such special handling matters? No idea. That's something you are going to have to figure out on your own. -- Steve

Re: Difficulties for compilation without extra optimisation

2017-12-03 Thread SF Markus Elfring
> Why would you compile the kernel without optimization? I would like to see how big an effect finally is in such a build configuration after specific source code adjustments. > There's many places in the kernel that WILL NOT BUILD without optimization. I did not really know this detail so far.

Re: Difficulties for compilation without extra optimisation

2017-12-03 Thread Steven Rostedt
On Sun, 3 Dec 2017 15:17:32 + Trond Myklebust wrote: > > I would like to check corresponding build results then without extra > > optimisation applied by the compiler. > > But I got surprised by error messages for a command like the > > following. > > > > elfring@Sonne:~/Projekte/Linux/next-

Re: Difficulties for compilation without extra optimisation

2017-12-03 Thread Trond Myklebust
On Sun, 2017-12-03 at 15:15 +0100, SF Markus Elfring wrote: > Hello, > > I came along some software modules where I suggested source code > adjustments. > > Example: > nfs/write: Use common error handling code in > nfs_lock_and_join_requests() > > https://lkml.org/lkml/2017/11/7/599 > https://pa