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bpftool: Dump the kernel symbol's module name

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If the kernel symbol is in a module, we will dump the module name as
well. The square brackets around the module name are trimmed.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230709025630.3735-3-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yafang Shao 2023-07-09 02:56:22 +00:00 • committed by Alexei Starovoitov
parent 7ac8d0d261
commit dc6519445b
2 changed files with 7 additions and 1 deletions
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6
tools/bpf/bpftool/xlated_dumper.c
View file

@ -46,7 +46,11 @@ out:
} }
dd->sym_mapping = tmp; dd->sym_mapping = tmp;
sym = &dd->sym_mapping[dd->sym_count]; sym = &dd->sym_mapping[dd->sym_count];
if (sscanf(buff, "%p %*c %s", &address, sym->name) != 2)
/* module is optional */
sym->module[0] = '\0';
/* trim the square brackets around the module name */
if (sscanf(buff, "%p %*c %s [%[^]]s", &address, sym->name, sym->module) < 2)
continue; continue;
sym->address = (unsigned long)address; sym->address = (unsigned long)address;
if (!strcmp(sym->name, "__bpf_call_base")) { if (!strcmp(sym->name, "__bpf_call_base")) {

2
tools/bpf/bpftool/xlated_dumper.h
View file

@ -5,12 +5,14 @@
#define __BPF_TOOL_XLATED_DUMPER_H #define __BPF_TOOL_XLATED_DUMPER_H
#define SYM_MAX_NAME 256 #define SYM_MAX_NAME 256
#define MODULE_MAX_NAME 64
struct bpf_prog_linfo; struct bpf_prog_linfo;
struct kernel_sym { struct kernel_sym {
unsigned long address; unsigned long address;
char name[SYM_MAX_NAME]; char name[SYM_MAX_NAME];
char module[MODULE_MAX_NAME];
}; };
struct dump_data { struct dump_data {