On Mon, May 07, 2018 at 02:30:32PM -0700, Josh Hunt wrote: > On 05/07/2018 11:40 AM, Andi Kleen wrote: > > On Mon, May 07, 2018 at 02:24:16PM -0400, Josh Hunt wrote: > > > Add the ability to specify a DSO in the /tmp/perf-<PID>.map file. > > > The DSO should be the first line in the file and readable by the > > > running user. If a valid DSO is found all other contents of the > > > file will be ignored. This allows things like callchain unwinding > > > with DWARF to work. > > > > FWIW it's ok, but also obsolete with Kirill's large-pages-in-tmpfs > > work in newer kernels. With that you can just copy the executable into > > a 2MB tmpfs and disable the manual huge page copying and everything > > should work as usually. > > > > So essentially it's only a hack for old kernels and old binaries. > > > > But doesn't hurt I guess. > > Ah, very interesting. I wasn't aware of this. Can you point me to some more > details on this process?
See commit 5a6e75f8110c97e2a5488894d4e922187e6cb343 -Andi
