cregit-Linux how code gets into the kernel

Release 4.14 tools/perf/builtin-kallsyms.c

Directory: tools/perf
 * builtin-kallsyms.c
 * Builtin command: Look for a symbol in the running kernel and its modules
 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <>
 * Released under the GPL v2. (and only v2, not any later version)
#include <inttypes.h>
#include "builtin.h"
#include <linux/compiler.h>
#include <subcmd/parse-options.h>
#include "debug.h"
#include "machine.h"
#include "symbol.h"

static int __cmd_kallsyms(int argc, const char **argv) { int i; struct machine *machine = machine__new_kallsyms(); if (machine == NULL) { pr_err("Couldn't read /proc/kallsyms\n"); return -1; } for (i = 0; i < argc; ++i) { struct map *map; struct symbol *symbol = machine__find_kernel_function_by_name(machine, argv[i], &map); if (symbol == NULL) { printf("%s: not found\n", argv[i]); continue; } printf("%s: %s %s %#" PRIx64 "-%#" PRIx64 " (%#" PRIx64 "-%#" PRIx64")\n", symbol->name, map->dso->short_name, map->dso->long_name, map->unmap_ip(map, symbol->start), map->unmap_ip(map, symbol->end), symbol->start, symbol->end); } machine__delete(machine); return 0; }


Arnaldo Carvalho de Melo167100.00%1100.00%

int cmd_kallsyms(int argc, const char **argv) { const struct option options[] = { OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"), OPT_END() }; const char * const kallsyms_usage[] = { "perf kallsyms [<options>] symbol_name", NULL }; argc = parse_options(argc, argv, options, kallsyms_usage, 0); if (argc < 1) usage_with_options(kallsyms_usage, options); symbol_conf.sort_by_name = true; symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL); if (symbol__init(NULL) < 0) return -1; return __cmd_kallsyms(argc, argv); }


Arnaldo Carvalho de Melo117100.00%1100.00%

Overall Contributors

Arnaldo Carvalho de Melo306100.00%2100.00%
Directory: tools/perf
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.