WebSep 17, 2001 · +BPF_CALL_2 (bpf_strcmp, void *, p1, void *, p2) +{ + char *str1 = (char *)p1; + char *str2 = (char *)p2; + + printk (KERN_DEBUG "I was here, bleh!\n"); + return strcmp (str1, str2); +} + +const struct bpf_func_proto bpf_strcmp_proto = { + .func = bpf_strcmp, + .gpl_only = false, + .ret_type = RET_INTEGER, + .arg1_type = … WebOn Thu, Nov 03, 2024 at 03:52:26PM -0400, eugene.loh--- via DTrace-devel wrote: > From: Eugene Loh > > The code branched depending on whether …
strcmp() in C - GeeksforGeeks
Web(2) the performance of home-made strncmp is not so good As shown in the benchmark of patch #2, the performance of bpf_strncmp helper is 80% better than home-made strncmp under x86-64, and 600% better under arm64 thanks to its arch-optimized strncmp(). But i'm concernt about whether the API of bpf_strncmp() is OK. WebThe partial revert is done in patch 7 anyway. Alexei Starovoitov (8): bpf: Invoke btf_struct_access() callback only for writes. bpf: Remove unused arguments from btf_struct_access(). bpf: Refactor btf_nested_type_is_trusted(). bpf: Teach verifier that certain helpers accept NULL pointer. bpf: Refactor NULL-ness check in check_reg_type(). counselling trans young people
bcc/inject.py at master · iovisor/bcc · GitHub
WebOn Thu, Nov 03, 2024 at 03:52:26PM -0400, eugene.loh--- via DTrace-devel wrote: > From: Eugene Loh > > The code branched depending on whether the first string is known > to be a pointer to D-managed storage. If we simply assume that > the storage is never D-managed, we can save two instructions as > well as a conditional … WebBut I'm not sure having separate headers for BPF programs and for kernel module would be better. This patchset also needs: 74bc3a5acc82 bpf: Add missing btf_put to register_btf_id_dtor_kfuncs which is only in bpf/master now. Webbpftrace. bpftrace is a high-level tracing language for Linux enhanced Berkeley Packet Filter (eBPF) available in recent Linux kernels (4.x). bpftrace uses LLVM as a backend to compile scripts to BPF-bytecode and makes use of BCC for interacting with the Linux BPF system, as well as existing Linux tracing capabilities: kernel dynamic tracing ... counselling transference