Re: [PATCH RFC] rethook: inline arch_rethook_trampoline_callback() in assembly code

On Wed, Apr 24, 2024 at 5:02 PM Andrii Nakryiko wrote: > > At the lowest level, rethook-based kretprobes on x86-64 architecture go > through arch_rethoook_trampoline() function, manually written in > assembly, which calls into a simple arch_rethook_trampoline_callback() > function, written in C,

Re: [PATCH bpf-next] bpf: add support to read cpu_entry in bpf program

On 4/27/24 8:18 AM, Florian Lehner wrote: Add new field "cpu_entry" to bpf_perf_event_data which could be read by bpf programs attached to perf events. The value contains the CPU value recorded by specifying sample_type with PERF_SAMPLE_CPU when calling perf_event_open(). You can use

Re: [PATCH 5.15,5.10,5.4,4.19 0/2] Fix warning when tracing with large filenames

On Wed, Apr 24, 2024 at 07:20:07PM -0300, Thadeu Lima de Souza Cascardo wrote: > The warning described on patch "tracing: Increase PERF_MAX_TRACE_SIZE to > handle Sentinel1 and docker together" can be triggered with a perf probe on > do_execve with a large path. As PATH_MAX is larger than