Messages in this thread | | | Date | Mon, 18 Feb 2019 00:06:37 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCH v3 perf,bpf 08/11] perf, bpf: save btf information as headers to perf.data |
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On Fri, Feb 15, 2019 at 01:53:51PM -0800, Song Liu wrote:
SNIP
> +static int process_btf(struct feat_fd *ff, void *data __maybe_unused) > +{ > + struct perf_env *env = &ff->ph->env; > + u32 count, i; > + > + if (do_read_u32(ff, &count)) > + return -1; > + > + down_write(&env->bpf_progs.bpf_info_lock); > + > + for (i = 0; i < count; ++i) { > + struct btf_node btf_node; > + struct btf_node *node; > + > + if (__do_read(ff, &btf_node, sizeof(struct btf_node))) > + return -1; > + > + node = malloc(sizeof(struct btf_node) + btf_node.data_size); > + if (!node) > + return -1; > + > + node->id = btf_node.id; > + node->data_size = btf_node.data_size; > + > + if (__do_read(ff, node->data, btf_node.data_size)) { > + free(node); > + return -1; > + }
hows endianity swap handled got struct btf_node and data in here?
thanks, jirka
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