On Wed, 05 Mar 2025 15:28:38 -0800, Namhyung Kim wrote: > The length of PERF_RECORD_KSYMBOL for BPF is a size of JITed code so > it'd be 0 when it's not JITed. The ksymbol is needed to symbolize the > code when it gets samples in the region but non-JITed code cannot get > samples. Thus it'd be ok to ignore them. > > Actually it caused a performance issue in the perf tools on old ARM > kernels where it can refuse to JIT some BPF codes. It ended up > splitting the existing kernel map (kallsyms). And later lookup for a > kernel symbol would create a new kernel map from kallsyms and then > split it again and again. :( > > [...] Applied to perf-tools-next, thanks! Best regards, Namhyung
