17 files changed, 136 insertions, 105 deletions

diff --git a/tools/perf/util/abspath.c b/tools/perf/util/abspath.c
index 61d33b81fc97..a791dd467261 100644
--- a/tools/perf/util/abspath.c
+++ b/tools/perf/util/abspath.c
@@ -50,7 +50,8 @@ const char *make_absolute_path(const char *path)
                         die ("Could not get current working directory");
 
                 if (last_elem) {
-                        int len = strlen(buf);
+                        len = strlen(buf);
+
                         if (len + strlen(last_elem) + 2 > PATH_MAX)
                                 die ("Too long path name: '%s/%s'",
                                                 buf, last_elem);
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 4b50c412b9c5..6f8ea9d210b6 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -52,7 +52,6 @@ extern const char *perf_mailmap_file;
 extern void maybe_flush_or_die(FILE *, const char *);
 extern int copy_fd(int ifd, int ofd);
 extern int copy_file(const char *dst, const char *src, int mode);
-extern ssize_t read_in_full(int fd, void *buf, size_t count);
 extern ssize_t write_in_full(int fd, const void *buf, size_t count);
 extern void write_or_die(int fd, const void *buf, size_t count);
 extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 011473411642..3b8380f1b478 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -50,6 +50,7 @@ rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
                         else
                                 p = &(*p)->rb_right;
                         break;
+                case CHAIN_NONE:
                 default:
                         break;
                 }
@@ -143,6 +144,7 @@ int register_callchain_param(struct callchain_param *param)
         case CHAIN_FLAT:
                 param->sort = sort_chain_flat;
                 break;
+        case CHAIN_NONE:
         default:
                 return -1;
         }
diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c
index 90a044d1fe7d..e47fdeb85391 100644
--- a/tools/perf/util/color.c
+++ b/tools/perf/util/color.c
@@ -242,9 +242,9 @@ int color_fwrite_lines(FILE *fp, const char *color,
         return 0;
 }
 
-char *get_percent_color(double percent)
+const char *get_percent_color(double percent)
 {
-        char *color = PERF_COLOR_NORMAL;
+        const char *color = PERF_COLOR_NORMAL;
 
         /*
          * We color high-overhead entries in red, mid-overhead
@@ -263,7 +263,7 @@ char *get_percent_color(double percent)
 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
 {
         int r;
-        char *color;
+        const char *color;
 
         color = get_percent_color(percent);
         r = color_fprintf(fp, color, fmt, percent);
diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h
index 706cec50bd25..43d0d1b67c45 100644
--- a/tools/perf/util/color.h
+++ b/tools/perf/util/color.h
@@ -36,6 +36,6 @@ int color_fprintf(FILE *fp, const char *color, const char *fmt, ...);
 int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...);
 int color_fwrite_lines(FILE *fp, const char *color, size_t count, const char *buf);
 int percent_color_fprintf(FILE *fp, const char *fmt, double percent);
-char *get_percent_color(double percent);
+const char *get_percent_color(double percent);
 
 #endif /* COLOR_H */
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 780df541006d..8784649109ce 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -160,17 +160,18 @@ static int get_extended_base_var(char *name, int baselen, int c)
         name[baselen++] = '.';
 
         for (;;) {
-                int c = get_next_char();
-                if (c == '\n')
+                int ch = get_next_char();
+
+                if (ch == '\n')
                         return -1;
-                if (c == '"')
+                if (ch == '"')
                         break;
-                if (c == '\\') {
-                        c = get_next_char();
-                        if (c == '\n')
+                if (ch == '\\') {
+                        ch = get_next_char();
+                        if (ch == '\n')
                                 return -1;
                 }
-                name[baselen++] = c;
+                name[baselen++] = ch;
                 if (baselen > MAXNAME / 2)
                         return -1;
         }
@@ -530,6 +531,8 @@ static int store_aux(const char* key, const char* value, void *cb __used)
                                         store.offset[store.seen] = ftell(config_file);
                         }
                 }
+        default:
+                break;
         }
         return 0;
 }
@@ -619,6 +622,7 @@ contline:
                 switch (contents[offset]) {
                         case '=': equal_offset = offset; break;
                         case ']': bracket_offset = offset; break;
+                        default: break;
                 }
         if (offset > 0 && contents[offset-1] == '\\') {
                 offset_ = offset;
@@ -742,9 +746,9 @@ int perf_config_set_multivar(const char* key, const char* value,
                         goto write_err_out;
         } else {
                 struct stat st;
-                char* contents;
+                char *contents;
                 ssize_t contents_sz, copy_begin, copy_end;
-                int i, new_line = 0;
+                int new_line = 0;
 
                 if (value_regex == NULL)
                         store.value_regex = NULL;
diff --git a/tools/perf/util/exec_cmd.c b/tools/perf/util/exec_cmd.c
index 34a352867382..2745605dba11 100644
--- a/tools/perf/util/exec_cmd.c
+++ b/tools/perf/util/exec_cmd.c
@@ -6,7 +6,6 @@
 
 #define MAX_ARGS        32
 
-extern char **environ;
 static const char *argv_exec_path;
 static const char *argv0_path;
 
diff --git a/tools/perf/util/module.c b/tools/perf/util/module.c
index ddabe925d65d..3d567fe59c79 100644
--- a/tools/perf/util/module.c
+++ b/tools/perf/util/module.c
@@ -436,9 +436,9 @@ static int mod_dso__load_module_paths(struct mod_dso *self)
                 goto out_failure;
 
         while (!feof(file)) {
-                char *path, *name, *tmp;
+                char *name, *tmp;
                 struct module *module;
-                int line_len, len;
+                int line_len;
 
                 line_len = getline(&line, &n, file);
                 if (line_len < 0)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 044178408783..1cda97b39118 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -14,10 +14,10 @@ int					nr_counters;
 struct perf_counter_attr                attrs[MAX_COUNTERS];
 
 struct event_symbol {
-        u8      type;
-        u64     config;
-        char    *symbol;
-        char    *alias;
+        u8              type;
+        u64             config;
+        const char      *symbol;
+        const char      *alias;
 };
 
 char debugfs_path[MAXPATHLEN];
@@ -51,7 +51,7 @@ static struct event_symbol event_symbols[] = {
 #define PERF_COUNTER_TYPE(config)       __PERF_COUNTER_FIELD(config, TYPE)
 #define PERF_COUNTER_ID(config)         __PERF_COUNTER_FIELD(config, EVENT)
 
-static char *hw_event_names[] = {
+static const char *hw_event_names[] = {
         "cycles",
         "instructions",
         "cache-references",
@@ -61,7 +61,7 @@ static char *hw_event_names[] = {
         "bus-cycles",
 };
 
-static char *sw_event_names[] = {
+static const char *sw_event_names[] = {
         "cpu-clock-msecs",
         "task-clock-msecs",
         "page-faults",
@@ -73,7 +73,7 @@ static char *sw_event_names[] = {
 
 #define MAX_ALIASES 8
 
-static char *hw_cache[][MAX_ALIASES] = {
+static const char *hw_cache[][MAX_ALIASES] = {
  { "L1-dcache", "l1-d",         "l1d",          "L1-data",              },
  { "L1-icache", "l1-i",         "l1i",          "L1-instruction",       },
  { "LLC",       "L2"                                                    },
@@ -82,13 +82,13 @@ static char *hw_cache[][MAX_ALIASES] = {
  { "branch",    "branches",     "bpu",          "btb",          "bpc",  },
 };
 
-static char *hw_cache_op[][MAX_ALIASES] = {
+static const char *hw_cache_op[][MAX_ALIASES] = {
  { "load",      "loads",        "read",                                 },
  { "store",     "stores",       "write",                                },
  { "prefetch",  "prefetches",   "speculative-read", "speculative-load", },
 };
 
-static char *hw_cache_result[][MAX_ALIASES] = {
+static const char *hw_cache_result[][MAX_ALIASES] = {
  { "refs",      "Reference",    "ops",          "access",               },
  { "misses",    "miss",                                                 },
 };
@@ -158,7 +158,7 @@ int valid_debugfs_mount(const char *debugfs)
         return 0;
 }
 
-static char *tracepoint_id_to_name(u64 config)
+static const char *tracepoint_id_to_name(u64 config)
 {
         static char tracepoint_name[2 * MAX_EVENT_LENGTH];
         DIR *sys_dir, *evt_dir;
@@ -235,7 +235,7 @@ static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
         return name;
 }
 
-char *event_name(int counter)
+const char *event_name(int counter)
 {
         u64 config = attrs[counter].config;
         int type = attrs[counter].type;
@@ -243,7 +243,7 @@ char *event_name(int counter)
         return __event_name(type, config);
 }
 
-char *__event_name(int type, u64 config)
+const char *__event_name(int type, u64 config)
 {
         static char buf[32];
 
@@ -294,7 +294,7 @@ char *__event_name(int type, u64 config)
         return "unknown";
 }
 
-static int parse_aliases(const char **str, char *names[][MAX_ALIASES], int size)
+static int parse_aliases(const char **str, const char *names[][MAX_ALIASES], int size)
 {
         int i, j;
         int n, longest = -1;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 192a962e3a0f..9b1aeea01636 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -9,8 +9,8 @@ extern int			nr_counters;
 
 extern struct perf_counter_attr attrs[MAX_COUNTERS];
 
-extern char *event_name(int ctr);
-extern char *__event_name(int type, u64 config);
+extern const char *event_name(int ctr);
+extern const char *__event_name(int type, u64 config);
 
 extern int parse_events(const struct option *opt, const char *str, int unset);
 
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index 1bf67190c820..6d8af48c925e 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -53,6 +53,12 @@ static int get_value(struct parse_opt_ctx_t *p,
                 case OPTION_SET_INT:
                 case OPTION_SET_PTR:
                         return opterror(opt, "takes no value", flags);
+                case OPTION_END:
+                case OPTION_ARGUMENT:
+                case OPTION_GROUP:
+                case OPTION_STRING:
+                case OPTION_INTEGER:
+                case OPTION_LONG:
                 default:
                         break;
                 }
@@ -130,6 +136,9 @@ static int get_value(struct parse_opt_ctx_t *p,
                         return opterror(opt, "expects a numerical value", flags);
                 return 0;
 
+        case OPTION_END:
+        case OPTION_ARGUMENT:
+        case OPTION_GROUP:
         default:
                 die("should not happen, someone must be hit on the forehead");
         }
@@ -296,6 +305,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                                 return parse_options_usage(usagestr, options);
                         case -2:
                                 goto unknown;
+                        default:
+                                break;
                         }
                         if (ctx->opt)
                                 check_typos(arg + 1, options);
@@ -314,6 +325,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                                         ctx->argv[0] = strdup(ctx->opt - 1);
                                         *(char *)ctx->argv[0] = '-';
                                         goto unknown;
+                                default:
+                                        break;
                                 }
                         }
                         continue;
@@ -336,6 +349,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                         return parse_options_usage(usagestr, options);
                 case -2:
                         goto unknown;
+                default:
+                        break;
                 }
                 continue;
 unknown:
@@ -456,6 +471,13 @@ int usage_with_options_internal(const char * const *usagestr,
                         }
                         break;
                 default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
+                case OPTION_END:
+                case OPTION_GROUP:
+                case OPTION_BIT:
+                case OPTION_BOOLEAN:
+                case OPTION_SET_INT:
+                case OPTION_SET_PTR:
+                case OPTION_LONG:
                         break;
                 }
 
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c
index a501a40dd2cb..fd1f2faaade4 100644
--- a/tools/perf/util/path.c
+++ b/tools/perf/util/path.c
@@ -17,7 +17,7 @@ static char bad_path[] = "/bad-path/";
  * Two hacks:
  */
 
-static char *get_perf_dir(void)
+static const char *get_perf_dir(void)
 {
         return ".";
 }
@@ -38,8 +38,9 @@ size_t strlcpy(char *dest, const char *src, size_t size)
 static char *get_pathname(void)
 {
         static char pathname_array[4][PATH_MAX];
-        static int index;
-        return pathname_array[3 & ++index];
+        static int idx;
+
+        return pathname_array[3 & ++idx];
 }
 
 static char *cleanup_path(char *path)
@@ -161,20 +162,24 @@ int perf_mkstemp(char *path, size_t len, const char *template)
 }
 
 
-const char *make_relative_path(const char *abs, const char *base)
+const char *make_relative_path(const char *abs_path, const char *base)
 {
         static char buf[PATH_MAX + 1];
         int baselen;
+
         if (!base)
-                return abs;
+                return abs_path;
+
         baselen = strlen(base);
-        if (prefixcmp(abs, base))
-                return abs;
-        if (abs[baselen] == '/')
+        if (prefixcmp(abs_path, base))
+                return abs_path;
+        if (abs_path[baselen] == '/')
                 baselen++;
         else if (base[baselen - 1] != '/')
-                return abs;
-        strcpy(buf, abs + baselen);
+                return abs_path;
+
+        strcpy(buf, abs_path + baselen);
+
         return buf;
 }
 
diff --git a/tools/perf/util/run-command.c b/tools/perf/util/run-command.c
index a3935343091a..2b615acf94d7 100644
--- a/tools/perf/util/run-command.c
+++ b/tools/perf/util/run-command.c
@@ -262,7 +262,7 @@ int run_hook(const char *index_file, const char *name, ...)
 {
         struct child_process hook;
         const char **argv = NULL, *env[2];
-        char index[PATH_MAX];
+        char idx[PATH_MAX];
         va_list args;
         int ret;
         size_t i = 0, alloc = 0;
@@ -284,8 +284,8 @@ int run_hook(const char *index_file, const char *name, ...)
         hook.no_stdin = 1;
         hook.stdout_to_stderr = 1;
         if (index_file) {
-                snprintf(index, sizeof(index), "PERF_INDEX_FILE=%s", index_file);
-                env[0] = index;
+                snprintf(idx, sizeof(idx), "PERF_INDEX_FILE=%s", index_file);
+                env[0] = idx;
                 env[1] = NULL;
                 hook.env = env;
         }
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0b9862351260..3159d47ae1cc 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -21,7 +21,7 @@ enum dso_origin {
 
 static struct symbol *symbol__new(u64 start, u64 len,
                                   const char *name, unsigned int priv_size,
-                                  u64 obj_start, int verbose)
+                                  u64 obj_start, int v)
 {
         size_t namelen = strlen(name) + 1;
         struct symbol *self = calloc(1, priv_size + sizeof(*self) + namelen);
@@ -29,7 +29,7 @@ static struct symbol *symbol__new(u64 start, u64 len,
         if (!self)
                 return NULL;
 
-        if (verbose >= 2)
+        if (v >= 2)
                 printf("new symbol: %016Lx [%08lx]: %s, hist: %p, obj_start: %p\n",
                         (u64)start, (unsigned long)len, name, self->hist, (void *)(unsigned long)obj_start);
 
@@ -156,7 +156,7 @@ size_t dso__fprintf(struct dso *self, FILE *fp)
         return ret;
 }
 
-static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verbose)
+static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int v)
 {
         struct rb_node *nd, *prevnd;
         char *line = NULL;
@@ -198,7 +198,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
                  * Well fix up the end later, when we have all sorted.
                  */
                 sym = symbol__new(start, 0xdead, line + len + 2,
-                                  self->sym_priv_size, 0, verbose);
+                                  self->sym_priv_size, 0, v);
 
                 if (sym == NULL)
                         goto out_delete_line;
@@ -239,7 +239,7 @@ out_failure:
         return -1;
 }
 
-static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int verbose)
+static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int v)
 {
         char *line = NULL;
         size_t n;
@@ -277,7 +277,7 @@ static int dso__load_perf_map(struct dso *self, symbol_filter_t filter, int verb
                         continue;
 
                 sym = symbol__new(start, size, line + len,
-                                  self->sym_priv_size, start, verbose);
+                                  self->sym_priv_size, start, v);
 
                 if (sym == NULL)
                         goto out_delete_line;
@@ -305,13 +305,13 @@ out_failure:
  * elf_symtab__for_each_symbol - iterate thru all the symbols
  *
  * @self: struct elf_symtab instance to iterate
- * @index: uint32_t index
+ * @idx: uint32_t idx
  * @sym: GElf_Sym iterator
  */
-#define elf_symtab__for_each_symbol(syms, nr_syms, index, sym) \
-        for (index = 0, gelf_getsym(syms, index, &sym);\
-             index < nr_syms; \
-             index++, gelf_getsym(syms, index, &sym))
+#define elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) \
+        for (idx = 0, gelf_getsym(syms, idx, &sym);\
+             idx < nr_syms; \
+             idx++, gelf_getsym(syms, idx, &sym))
 
 static inline uint8_t elf_sym__type(const GElf_Sym *sym)
 {
@@ -354,7 +354,7 @@ static inline const char *elf_sym__name(const GElf_Sym *sym,
 
 static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
                                     GElf_Shdr *shp, const char *name,
-                                    size_t *index)
+                                    size_t *idx)
 {
         Elf_Scn *sec = NULL;
         size_t cnt = 1;
@@ -365,8 +365,8 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
                 gelf_getshdr(sec, shp);
                 str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name);
                 if (!strcmp(name, str)) {
-                        if (index)
-                                *index = cnt;
+                        if (idx)
+                                *idx = cnt;
                         break;
                 }
                 ++cnt;
@@ -392,7 +392,7 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
  * And always look at the original dso, not at debuginfo packages, that
  * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
  */
-static int dso__synthesize_plt_symbols(struct  dso *self, int verbose)
+static int dso__synthesize_plt_symbols(struct  dso *self, int v)
 {
         uint32_t nr_rel_entries, idx;
         GElf_Sym sym;
@@ -442,7 +442,7 @@ static int dso__synthesize_plt_symbols(struct  dso *self, int verbose)
                 goto out_elf_end;
 
         /*
-         * Fetch the relocation section to find the indexes to the GOT
+         * Fetch the relocation section to find the idxes to the GOT
          * and the symbols in the .dynsym they refer to.
          */
         reldata = elf_getdata(scn_plt_rel, NULL);
@@ -476,7 +476,7 @@ static int dso__synthesize_plt_symbols(struct  dso *self, int verbose)
                                  "%s@plt", elf_sym__name(&sym, symstrs));
 
                         f = symbol__new(plt_offset, shdr_plt.sh_entsize,
-                                        sympltname, self->sym_priv_size, 0, verbose);
+                                        sympltname, self->sym_priv_size, 0, v);
                         if (!f)
                                 goto out_elf_end;
 
@@ -494,7 +494,7 @@ static int dso__synthesize_plt_symbols(struct  dso *self, int verbose)
                                  "%s@plt", elf_sym__name(&sym, symstrs));
 
                         f = symbol__new(plt_offset, shdr_plt.sh_entsize,
-                                        sympltname, self->sym_priv_size, 0, verbose);
+                                        sympltname, self->sym_priv_size, 0, v);
                         if (!f)
                                 goto out_elf_end;
 
@@ -518,12 +518,12 @@ out:
 }
 
 static int dso__load_sym(struct dso *self, int fd, const char *name,
-                         symbol_filter_t filter, int verbose, struct module *mod)
+                         symbol_filter_t filter, int v, struct module *mod)
 {
         Elf_Data *symstrs, *secstrs;
         uint32_t nr_syms;
         int err = -1;
-        uint32_t index;
+        uint32_t idx;
         GElf_Ehdr ehdr;
         GElf_Shdr shdr;
         Elf_Data *syms;
@@ -534,14 +534,14 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
 
         elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
         if (elf == NULL) {
-                if (verbose)
+                if (v)
                         fprintf(stderr, "%s: cannot read %s ELF file.\n",
                                 __func__, name);
                 goto out_close;
         }
 
         if (gelf_getehdr(elf, &ehdr) == NULL) {
-                if (verbose)
+                if (v)
                         fprintf(stderr, "%s: cannot get elf header.\n", __func__);
                 goto out_elf_end;
         }
@@ -583,9 +583,9 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
                                                      NULL) != NULL);
         } else self->adjust_symbols = 0;
 
-        elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
+        elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) {
                 struct symbol *f;
-                const char *name;
+                const char *elf_name;
                 char *demangled;
                 u64 obj_start;
                 struct section *section = NULL;
@@ -608,7 +608,7 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
                 obj_start = sym.st_value;
 
                 if (self->adjust_symbols) {
-                        if (verbose >= 2)
+                        if (v >= 2)
                                 printf("adjusting symbol: st_value: %Lx sh_addr: %Lx sh_offset: %Lx\n",
                                         (u64)sym.st_value, (u64)shdr.sh_addr, (u64)shdr.sh_offset);
 
@@ -630,13 +630,13 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
                  * DWARF DW_compile_unit has this, but we don't always have access
                  * to it...
                  */
-                name = elf_sym__name(&sym, symstrs);
-                demangled = bfd_demangle(NULL, name, DMGL_PARAMS | DMGL_ANSI);
+                elf_name = elf_sym__name(&sym, symstrs);
+                demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI);
                 if (demangled != NULL)
-                        name = demangled;
+                        elf_name = demangled;
 
-                f = symbol__new(sym.st_value, sym.st_size, name,
-                                self->sym_priv_size, obj_start, verbose);
+                f = symbol__new(sym.st_value, sym.st_size, elf_name,
+                                self->sym_priv_size, obj_start, v);
                 free(demangled);
                 if (!f)
                         goto out_elf_end;
@@ -659,7 +659,7 @@ out_close:
 
 #define BUILD_ID_SIZE 128
 
-static char *dso__read_build_id(struct dso *self, int verbose)
+static char *dso__read_build_id(struct dso *self, int v)
 {
         int i;
         GElf_Ehdr ehdr;
@@ -676,14 +676,14 @@ static char *dso__read_build_id(struct dso *self, int verbose)
 
         elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
         if (elf == NULL) {
-                if (verbose)
+                if (v)
                         fprintf(stderr, "%s: cannot read %s ELF file.\n",
                                 __func__, self->name);
                 goto out_close;
         }
 
         if (gelf_getehdr(elf, &ehdr) == NULL) {
-                if (verbose)
+                if (v)
                         fprintf(stderr, "%s: cannot get elf header.\n", __func__);
                 goto out_elf_end;
         }
@@ -706,7 +706,7 @@ static char *dso__read_build_id(struct dso *self, int verbose)
                 ++raw;
                 bid += 2;
         }
-        if (verbose >= 2)
+        if (v >= 2)
                 printf("%s(%s): %s\n", __func__, self->name, build_id);
 out_elf_end:
         elf_end(elf);
@@ -732,7 +732,7 @@ char dso__symtab_origin(const struct dso *self)
         return origin[self->origin];
 }
 
-int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
+int dso__load(struct dso *self, symbol_filter_t filter, int v)
 {
         int size = PATH_MAX;
         char *name = malloc(size), *build_id = NULL;
@@ -745,7 +745,7 @@ int dso__load(struct dso *self, symbol_filter_t filter, int verbose)
         self->adjust_symbols = 0;
 
         if (strncmp(self->name, "/tmp/perf-", 10) == 0) {
-                ret = dso__load_perf_map(self, filter, verbose);
+                ret = dso__load_perf_map(self, filter, v);
                 self->origin = ret > 0 ? DSO__ORIG_JAVA_JIT :
                                          DSO__ORIG_NOT_FOUND;
                 return ret;
@@ -764,7 +764,7 @@ more:
                         snprintf(name, size, "/usr/lib/debug%s", self->name);
                         break;
                 case DSO__ORIG_BUILDID:
-                        build_id = dso__read_build_id(self, verbose);
+                        build_id = dso__read_build_id(self, v);
                         if (build_id != NULL) {
                                 snprintf(name, size,
                                          "/usr/lib/debug/.build-id/%.2s/%s.debug",
@@ -785,7 +785,7 @@ more:
                 fd = open(name, O_RDONLY);
         } while (fd < 0);
 
-        ret = dso__load_sym(self, fd, name, filter, verbose, NULL);
+        ret = dso__load_sym(self, fd, name, filter, v, NULL);
         close(fd);
 
         /*
@@ -795,7 +795,7 @@ more:
                 goto more;
 
         if (ret > 0) {
-                int nr_plt = dso__synthesize_plt_symbols(self, verbose);
+                int nr_plt = dso__synthesize_plt_symbols(self, v);
                 if (nr_plt > 0)
                         ret += nr_plt;
         }
@@ -807,7 +807,7 @@ out:
 }
 
 static int dso__load_module(struct dso *self, struct mod_dso *mods, const char *name,
-                             symbol_filter_t filter, int verbose)
+                             symbol_filter_t filter, int v)
 {
         struct module *mod = mod_dso__find_module(mods, name);
         int err = 0, fd;
@@ -820,13 +820,13 @@ static int dso__load_module(struct dso *self, struct mod_dso *mods, const char *
         if (fd < 0)
                 return err;
 
-        err = dso__load_sym(self, fd, name, filter, verbose, mod);
+        err = dso__load_sym(self, fd, name, filter, v, mod);
         close(fd);
 
         return err;
 }
 
-int dso__load_modules(struct dso *self, symbol_filter_t filter, int verbose)
+int dso__load_modules(struct dso *self, symbol_filter_t filter, int v)
 {
         struct mod_dso *mods = mod_dso__new_dso("modules");
         struct module *pos;
@@ -844,7 +844,7 @@ int dso__load_modules(struct dso *self, symbol_filter_t filter, int verbose)
         next = rb_first(&mods->mods);
         while (next) {
                 pos = rb_entry(next, struct module, rb_node);
-                err = dso__load_module(self, mods, pos->name, filter, verbose);
+                err = dso__load_module(self, mods, pos->name, filter, v);
 
                 if (err < 0)
                         break;
@@ -887,14 +887,14 @@ static inline void dso__fill_symbol_holes(struct dso *self)
 }
 
 static int dso__load_vmlinux(struct dso *self, const char *vmlinux,
-                             symbol_filter_t filter, int verbose)
+                             symbol_filter_t filter, int v)
 {
         int err, fd = open(vmlinux, O_RDONLY);
 
         if (fd < 0)
                 return -1;
 
-        err = dso__load_sym(self, fd, vmlinux, filter, verbose, NULL);
+        err = dso__load_sym(self, fd, vmlinux, filter, v, NULL);
 
         if (err > 0)
                 dso__fill_symbol_holes(self);
@@ -905,18 +905,18 @@ static int dso__load_vmlinux(struct dso *self, const char *vmlinux,
 }
 
 int dso__load_kernel(struct dso *self, const char *vmlinux,
-                     symbol_filter_t filter, int verbose, int modules)
+                     symbol_filter_t filter, int v, int use_modules)
 {
         int err = -1;
 
         if (vmlinux) {
-                err = dso__load_vmlinux(self, vmlinux, filter, verbose);
-                if (err > 0 && modules)
-                        err = dso__load_modules(self, filter, verbose);
+                err = dso__load_vmlinux(self, vmlinux, filter, v);
+                if (err > 0 && use_modules)
+                        err = dso__load_modules(self, filter, v);
         }
 
         if (err <= 0)
-                err = dso__load_kallsyms(self, filter, verbose);
+                err = dso__load_kallsyms(self, filter, v);
 
         if (err > 0)
                 self->origin = DSO__ORIG_KERNEL;
@@ -929,7 +929,7 @@ struct dso	*kernel_dso;
 struct dso      *vdso;
 struct dso      *hypervisor_dso;
 
-char            *vmlinux = "vmlinux";
+const char      *vmlinux_name = "vmlinux";
 int             modules;
 
 static void dsos__add(struct dso *dso)
@@ -997,7 +997,7 @@ int load_kernel(void)
         if (!kernel_dso)
                 return -1;
 
-        err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, modules);
+        err = dso__load_kernel(kernel_dso, vmlinux_name, NULL, verbose, modules);
         if (err <= 0) {
                 dso__delete(kernel_dso);
                 kernel_dso = NULL;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 48b8e5759af9..6e8490716408 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -55,7 +55,7 @@ struct dso {
         char             name[0];
 };
 
-const char *sym_hist_filter;
+extern const char *sym_hist_filter;
 
 typedef int (*symbol_filter_t)(struct dso *self, struct symbol *sym);
 
@@ -87,6 +87,6 @@ extern struct list_head dsos;
 extern struct dso *kernel_dso;
 extern struct dso *vdso;
 extern struct dso *hypervisor_dso;
-extern char *vmlinux;
+extern const char *vmlinux_name;
 extern int   modules;
 #endif /* _PERF_SYMBOL_ */
diff --git a/tools/perf/util/values.c b/tools/perf/util/values.c
index 614cfaf4712a..1c15e39f99e3 100644
--- a/tools/perf/util/values.c
+++ b/tools/perf/util/values.c
@@ -96,7 +96,7 @@ static void perf_read_values__enlarge_counters(struct perf_read_values *values)
 }
 
 static int perf_read_values__findnew_counter(struct perf_read_values *values,
-                                             u64 rawid, char *name)
+                                             u64 rawid, const char *name)
 {
         int i;
 
@@ -116,7 +116,7 @@ static int perf_read_values__findnew_counter(struct perf_read_values *values,
 
 void perf_read_values_add_value(struct perf_read_values *values,
                                 u32 pid, u32 tid,
-                                u64 rawid, char *name, u64 value)
+                                u64 rawid, const char *name, u64 value)
 {
         int tindex, cindex;
 
@@ -221,8 +221,7 @@ static void perf_read_values__display_raw(FILE *fp,
                                 countwidth, values->value[i][j]);
 }
 
-void perf_read_values_display(FILE *fp, struct perf_read_values *values,
-                              int raw)
+void perf_read_values_display(FILE *fp, struct perf_read_values *values, int raw)
 {
         if (raw)
                 perf_read_values__display_raw(fp, values);
diff --git a/tools/perf/util/values.h b/tools/perf/util/values.h
index f8960fde0547..cadf8cf2a590 100644
--- a/tools/perf/util/values.h
+++ b/tools/perf/util/values.h
@@ -19,7 +19,7 @@ void perf_read_values_destroy(struct perf_read_values *values);
 
 void perf_read_values_add_value(struct perf_read_values *values,
                                 u32 pid, u32 tid,
-                                u64 rawid, char *name, u64 value);
+                                u64 rawid, const char *name, u64 value);
 
 void perf_read_values_display(FILE *fp, struct perf_read_values *values,
                               int raw);