On Mon, 27 Nov 2017 13:34:13 -0800 Andi Kleen <[email protected]> wrote:
> From: Andi Kleen <[email protected]> > > gcc 5 supports a new -mcount-record option to generate ftrace > tables directly. This avoids the need to run record_mcount > manually. > > Use this option when available. > > So far doesn't use -mcount-nop, which also exists now. > > This is needed to make ftrace work with LTO because the > normal record-mcount script doesn't run over the link > time output. > > It should also improve build times slightly in the general > case. > > Cc: [email protected] > Signed-off-by: Andi Kleen <[email protected]> > --- Hi Andi, Thanks for sending this. I'm currently trying to catch up on all the changes that need to get into 4.15 and will be doing a bit of traveling. I plan on looking at this in a week or two, and add it to the 4.16 queue. -- Steve
