On Wed, 14 Sep 2016 11:10:22 -0300 Carlos Eduardo Seo <c...@linux.vnet.ibm.com> wrote:
> On 9/14/16 8:28 AM, Nicholas Piggin wrote: > > > > How common it is for glibc to be built with elision? > > > > Not that common. We have it built with TLE support in Ubuntu (starting > in 15.04), SLES 12 (since SP2) and AT 9.0-0. > > However, it is only enabled by default in Ubuntu. For SLES and AT 9.0, > the user has to set an env var to enable it (it's a hack). > > There is some work upstream to add a tunables framework to glibc. That > will allow us to properly provide a way to users enable/disable TLE as > they wish. That patch is almost in, and as soon as it's committed, we'll > start working on the tunable for TLE. Okay, but for TLE-enabled case, we still want to skip the tabort before syscall on recent kernels, so we could add that now with a relatively small patch couldn't we? Thanks, Nick
