Re: 4.19.21: perf does not work on Ryzen, OK with 4.19.20

2019-02-13 Thread Peter Zijlstra
On Wed, Feb 13, 2019 at 12:08:03PM +0100, Sami Farin wrote: > The same .config, BIOS, and kernel boot parameters in both kernels. > > # perf top -v >┌─Error:┐ >│Failed to mmap with 12 (Cannot allocate memory)│ I think you got bit by

4.19.21: perf does not work on Ryzen, OK with 4.19.20

2019-02-13 Thread Sami Farin
The same .config, BIOS, and kernel boot parameters in both kernels. # perf top -v ┌─Error:┐ │Failed to mmap with 12 (Cannot allocate memory)│ mmap size 528384B [0.015080] smpboot: CPU0: AMD Ryzen 5 1600X Six-Core Processor (family