[tip:perfcounters/urgent] perf_counter tools: Add more warnings and fix/annotate them

tip-bot for Ingo Molnar
2009-07-01T10:55:57Z

Commit-ID: f37a291c527c954df4da568de718ebb36b8261c0
Gitweb: http://git.kernel.org/tip/f37a291c527c954df4da568de718ebb36b8261c0
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Wed, 1 Jul 2009 12:37:06 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 1 Jul 2009 12:49:48 +0200

perf_counter tools: Add more warnings and fix/annotate them

Enable -Wextra. This found a few real bugs plus a number
of signed/unsigned type mismatches/uncleanlinesses. It
also required a few annotations

All things considered it was still worth it so lets try with
this enabled for now.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
tools/perf/Makefile | 2 +-
tools/perf/builtin-annotate.c | 12 +++++-----
tools/perf/builtin-help.c | 6 +++-
tools/perf/builtin-list.c | 2 +-
tools/perf/builtin-record.c | 4 +-
tools/perf/builtin-report.c | 22 +++++++++---------
tools/perf/builtin-stat.c | 18 ++++++++------
tools/perf/builtin-top.c | 8 +++---
tools/perf/perf.c | 5 +---
tools/perf/perf.h | 2 +
tools/perf/util/alias.c | 2 +-
tools/perf/util/cache.h | 1 +
tools/perf/util/callchain.c | 15 ++++++------
tools/perf/util/callchain.h | 10 ++++----
tools/perf/util/color.c | 10 ++++++--
tools/perf/util/config.c | 18 ++++++++------
tools/perf/util/exec_cmd.c | 5 +++-
tools/perf/util/help.c | 26 ++++++++++++---------
tools/perf/util/help.h | 6 ++--
tools/perf/util/parse-events.c | 2 +-
tools/perf/util/parse-options.c | 2 +-
tools/perf/util/parse-options.h | 25 ++++++++++-----------
tools/perf/util/quote.c | 46 +++++++++++++++++++++-----------------
tools/perf/util/quote.h | 2 +-
tools/perf/util/strbuf.c | 13 ++++++-----
tools/perf/util/strbuf.h | 10 ++++----
tools/perf/util/wrapper.c | 5 ++-
27 files changed, 151 insertions(+), 128 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index f572c90..eddf076 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -164,7 +164,7 @@ endif

# CFLAGS and LDFLAGS are for the users to override from the command line.

-CFLAGS = $(M64) -ggdb3 -Wall -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -Werror -O6
+CFLAGS = $(M64) -ggdb3 -Wall -Wextra -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -Werror -O6
LDFLAGS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 722c0f5..6cba70d 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -160,7 +160,7 @@ static void dsos__fprintf(FILE *fp)

static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
- return dso__find_symbol(kernel_dso, ip);
+ return dso__find_symbol(dso, ip);
}

static int load_kernel(void)
@@ -203,7 +203,7 @@ static u64 map__map_ip(struct map *map, u64 ip)
return ip - map->start + map->pgoff;
}

-static u64 vdso__map_ip(struct map *map, u64 ip)
+static u64 vdso__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
@@ -600,7 +600,7 @@ static LIST_HEAD(hist_entry__sort_list);

static int sort_dimension__add(char *tok)
{
- int i;
+ unsigned int i;

for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
struct sort_dimension *sd = &sort_dimensions[i];
@@ -1069,7 +1069,7 @@ parse_line(FILE *file, struct symbol *sym, u64 start, u64 len)
static const char *prev_color;
unsigned int offset;
size_t line_len;
- u64 line_ip;
+ s64 line_ip;
int ret;
char *c;

@@ -1428,7 +1428,7 @@ more:

head += size;

- if (offset + head < stat.st_size)
+ if (offset + head < (unsigned long)stat.st_size)
goto more;

rc = EXIT_SUCCESS;
@@ -1492,7 +1492,7 @@ static void setup_sorting(void)
free(str);
}

-int cmd_annotate(int argc, const char **argv, const char *prefix)
+int cmd_annotate(int argc, const char **argv, const char *prefix __used)
{
symbol__init();

diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 0f32dc3..2599d86 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -3,6 +3,7 @@
*
* Builtin help command
*/
+#include "perf.h"
#include "util/cache.h"
#include "builtin.h"
#include "util/exec_cmd.h"
@@ -277,7 +278,7 @@ static struct cmdnames main_cmds, other_cmds;

void list_common_cmds_help(void)
{
- int i, longest = 0;
+ unsigned int i, longest = 0;

for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
if (longest < strlen(common_cmds[i].name))
@@ -415,9 +416,10 @@ static void show_html_page(const char *perf_cmd)
open_html(page_path.buf);
}

-int cmd_help(int argc, const char **argv, const char *prefix)
+int cmd_help(int argc, const char **argv, const char *prefix __used)
{
const char *alias;
+
load_command_list("perf-", &main_cmds, &other_cmds);

perf_config(perf_help_config, NULL);
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index fe60e37..f990fa8 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -13,7 +13,7 @@
#include "util/parse-options.h"
#include "util/parse-events.h"

-int cmd_list(int argc, const char **argv, const char *prefix)
+int cmd_list(int argc __used, const char **argv __used, const char *prefix __used)
{
print_events();
return 0;
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index d18546f..4ef78a5 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -294,7 +294,7 @@ static void pid_synthesize_mmap_samples(pid_t pid)
while (1) {
char bf[BUFSIZ], *pbf = bf;
struct mmap_event mmap_ev = {
- .header.type = PERF_EVENT_MMAP,
+ .header = { .type = PERF_EVENT_MMAP },
};
int n;
size_t size;
@@ -650,7 +650,7 @@ static const struct option options[] = {
OPT_END()
};

-int cmd_record(int argc, const char **argv, const char *prefix)
+int cmd_record(int argc, const char **argv, const char *prefix __used)
{
int counter;

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7d2b49a..007363d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -177,7 +177,7 @@ static void dsos__fprintf(FILE *fp)

static struct symbol *vdso__find_symbol(struct dso *dso, u64 ip)
{
- return dso__find_symbol(kernel_dso, ip);
+ return dso__find_symbol(dso, ip);
}

static int load_kernel(void)
@@ -239,7 +239,7 @@ static u64 map__map_ip(struct map *map, u64 ip)
return ip - map->start + map->pgoff;
}

-static u64 vdso__map_ip(struct map *map, u64 ip)
+static u64 vdso__map_ip(struct map *map __used, u64 ip)
{
return ip;
}
@@ -712,7 +712,7 @@ static LIST_HEAD(hist_entry__sort_list);

static int sort_dimension__add(char *tok)
{
- int i;
+ unsigned int i;

for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
struct sort_dimension *sd = &sort_dimensions[i];
@@ -801,7 +801,7 @@ callchain__fprintf(FILE *fp, struct callchain_node *self, u64 total_samples)
ret += fprintf(fp, " %s\n", chain->sym->name);
else
ret += fprintf(fp, " %p\n",
- (void *)chain->ip);
+ (void *)(long)chain->ip);
}

return ret;
@@ -938,12 +938,12 @@ static int call__match(struct symbol *sym)
}

static struct symbol **
-resolve_callchain(struct thread *thread, struct map *map,
+resolve_callchain(struct thread *thread, struct map *map __used,
struct ip_callchain *chain, struct hist_entry *entry)
{
- int i;
- struct symbol **syms;
u64 context = PERF_CONTEXT_MAX;
+ struct symbol **syms;
+ unsigned int i;

if (callchain) {
syms = calloc(chain->nr, sizeof(*syms));
@@ -1183,7 +1183,7 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)

fprintf(fp, "# ........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
- int i;
+ unsigned int i;

if (exclude_other && (se == &sort_parent))
continue;
@@ -1271,7 +1271,7 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
(long long)period);

if (sample_type & PERF_SAMPLE_CALLCHAIN) {
- int i;
+ unsigned int i;

chain = (void *)more_data;

@@ -1667,7 +1667,7 @@ more:
if (offset + head >= header->data_offset + header->data_size)
goto done;

- if (offset + head < stat.st_size)
+ if (offset + head < (unsigned long)stat.st_size)
goto more;

done:
@@ -1756,7 +1756,7 @@ static void setup_list(struct strlist **list, const char *list_str,
}
}

-int cmd_report(int argc, const char **argv, const char *prefix)
+int cmd_report(int argc, const char **argv, const char *prefix __used)
{
symbol__init();

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 2e03524..095a90e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -64,7 +64,7 @@ static struct perf_counter_attr default_attrs[] = {

static int system_wide = 0;
static int verbose = 0;
-static int nr_cpus = 0;
+static unsigned int nr_cpus = 0;
static int run_idx = 0;

static int run_count = 1;
@@ -108,7 +108,8 @@ static void create_perf_stat_counter(int counter, int pid)
PERF_FORMAT_TOTAL_TIME_RUNNING;

if (system_wide) {
- int cpu;
+ unsigned int cpu;
+
for (cpu = 0; cpu < nr_cpus; cpu++) {
fd[cpu][counter] = sys_perf_counter_open(attr, -1, cpu, -1, 0);
if (fd[cpu][counter] < 0 && verbose)
@@ -150,8 +151,8 @@ static inline int nsec_counter(int counter)
static void read_counter(int counter)
{
u64 *count, single_count[3];
- ssize_t res;
- int cpu, nv;
+ unsigned int cpu;
+ size_t res, nv;
int scaled;

count = event_res[run_idx][counter];
@@ -165,6 +166,7 @@ static void read_counter(int counter)

res = read(fd[cpu][counter], single_count, nv * sizeof(u64));
assert(res == nv * sizeof(u64));
+
close(fd[cpu][counter]);
fd[cpu][counter] = -1;

@@ -200,7 +202,7 @@ static void read_counter(int counter)
runtime_cycles[run_idx] = count[0];
}

-static int run_perf_stat(int argc, const char **argv)
+static int run_perf_stat(int argc __used, const char **argv)
{
unsigned long long t0, t1;
int status = 0;
@@ -390,7 +392,7 @@ static void calc_avg(void)
event_res_avg[j]+1, event_res[i][j]+1);
update_avg("counter/2", j,
event_res_avg[j]+2, event_res[i][j]+2);
- if (event_scaled[i][j] != -1)
+ if (event_scaled[i][j] != (u64)-1)
update_avg("scaled", j,
event_scaled_avg + j, event_scaled[i]+j);
else
@@ -510,7 +512,7 @@ static const struct option options[] = {
OPT_END()
};

-int cmd_stat(int argc, const char **argv, const char *prefix)
+int cmd_stat(int argc, const char **argv, const char *prefix __used)
{
int status;

@@ -528,7 +530,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix)

nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
assert(nr_cpus <= MAX_NR_CPUS);
- assert(nr_cpus >= 0);
+ assert((int)nr_cpus >= 0);

/*
* We dont want to block the signals - that would cause
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 0506cd6..5f5e7df 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -269,7 +269,7 @@ static void print_sym_table(void)
}
}

-static void *display_thread(void *arg)
+static void *display_thread(void *arg __used)
{
struct pollfd stdin_poll = { .fd = 0, .events = POLLIN };
int delay_msecs = delay_secs * 1000;
@@ -287,7 +287,7 @@ static void *display_thread(void *arg)
}

/* Tag samples to be skipped. */
-char *skip_symbols[] = {
+static const char *skip_symbols[] = {
"default_idle",
"cpu_idle",
"enter_idle",
@@ -426,7 +426,7 @@ static void process_event(u64 ip, int counter, int user)
struct mmap_data {
int counter;
void *base;
- unsigned int mask;
+ int mask;
unsigned int prev;
};

@@ -705,7 +705,7 @@ static const struct option options[] = {
OPT_END()
};

-int cmd_top(int argc, const char **argv, const char *prefix)
+int cmd_top(int argc, const char **argv, const char *prefix __used)
{
int counter;

diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 4eb7259..c565678 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -229,9 +229,6 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
use_pager = 1;
commit_pager_choice();

- if (p->option & NEED_WORK_TREE)
- /* setup_work_tree() */;
-
status = p->fn(argc, argv, prefix);
if (status)
return status & 0xff;
@@ -266,7 +263,7 @@ static void handle_internal_command(int argc, const char **argv)
{ "annotate", cmd_annotate, 0 },
{ "version", cmd_version, 0 },
};
- int i;
+ unsigned int i;
static const char ext[] = STRIP_EXTENSION;

if (sizeof(ext) > 1) {
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index ce39419..27887c9 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -52,6 +52,8 @@ static inline unsigned long long rdclock(void)
#define __user
#define asmlinkage

+#define __used __attribute__((__unused__))
+
#define unlikely(x) __builtin_expect(!!(x), 0)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
diff --git a/tools/perf/util/alias.c b/tools/perf/util/alias.c
index 9b3dd2b..b8144e8 100644
--- a/tools/perf/util/alias.c
+++ b/tools/perf/util/alias.c
@@ -3,7 +3,7 @@
static const char *alias_key;
static char *alias_val;

-static int alias_lookup_cb(const char *k, const char *v, void *cb)
+static int alias_lookup_cb(const char *k, const char *v, void *cb __used)
{
if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) {
if (!v)
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 393d614..161d5f4 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -3,6 +3,7 @@

#include "util.h"
#include "strbuf.h"
+#include "../perf.h"

#define PERF_DIR_ENVIRONMENT "PERF_DIR"
#define PERF_WORK_TREE_ENVIRONMENT "PERF_WORK_TREE"
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 440db12..3dceabd 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -92,7 +92,7 @@ static void
fill_node(struct callchain_node *node, struct ip_callchain *chain,
int start, struct symbol **syms)
{
- int i;
+ unsigned int i;

for (i = start; i < chain->nr; i++) {
struct callchain_list *call;
@@ -135,7 +135,7 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
{
struct callchain_node *new;
struct list_head *old_tail;
- int idx_total = idx_parents + idx_local;
+ unsigned int idx_total = idx_parents + idx_local;

/* split */
new = create_child(parent, true);
@@ -164,17 +164,18 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,

static int
__append_chain(struct callchain_node *root, struct ip_callchain *chain,
- int start, struct symbol **syms);
+ unsigned int start, struct symbol **syms);

static void
__append_chain_children(struct callchain_node *root, struct ip_callchain *chain,
- struct symbol **syms, int start)
+ struct symbol **syms, unsigned int start)
{
struct callchain_node *rnode;

/* lookup in childrens */
list_for_each_entry(rnode, &root->children, brothers) {
- int ret = __append_chain(rnode, chain, start, syms);
+ unsigned int ret = __append_chain(rnode, chain, start, syms);
+
if (!ret)
return;
}
@@ -184,10 +185,10 @@ __append_chain_children(struct callchain_node *root, struct ip_callchain *chain,

static int
__append_chain(struct callchain_node *root, struct ip_callchain *chain,
- int start, struct symbol **syms)
+ unsigned int start, struct symbol **syms)
{
struct callchain_list *cnode;
- int i = start;
+ unsigned int i = start;
bool found = false;

/*
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index c942daa..251d99e 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -10,15 +10,15 @@
struct callchain_node {
struct callchain_node *parent;
struct list_head brothers;
- struct list_head children;
- struct list_head val;
+ struct list_head children;
+ struct list_head val;
struct rb_node rb_node;
- int val_nr;
- int hit;
+ unsigned int val_nr;
+ u64 hit;
};

struct callchain_list {
- unsigned long ip;
+ u64 ip;
struct symbol *sym;
struct list_head list;
};
diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c
index 9a8c20c..26f8231 100644
--- a/tools/perf/util/color.c
+++ b/tools/perf/util/color.c
@@ -11,7 +11,8 @@ static int parse_color(const char *name, int len)
};
char *end;
int i;
- for (i = 0; i < ARRAY_SIZE(color_names); i++) {
+
+ for (i = 0; i < (int)ARRAY_SIZE(color_names); i++) {
const char *str = color_names[i];
if (!strncasecmp(name, str, len) && !str[len])
return i - 1;
@@ -28,7 +29,8 @@ static int parse_attr(const char *name, int len)
static const char * const attr_names[] = {
"bold", "dim", "ul", "blink", "reverse"
};
- int i;
+ unsigned int i;
+
for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
const char *str = attr_names[i];
if (!strncasecmp(name, str, len) && !str[len])
@@ -222,10 +224,12 @@ int color_fwrite_lines(FILE *fp, const char *color,
{
if (!*color)
return fwrite(buf, count, 1, fp) != 1;
+
while (count) {
char *p = memchr(buf, '\n', count);
+
if (p != buf && (fputs(color, fp) < 0 ||
- fwrite(buf, p ? p - buf : count, 1, fp) != 1 ||
+ fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
fputs(PERF_COLOR_RESET, fp) < 0))
return -1;
if (!p)
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 3dd13fa..780df54 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -47,10 +47,12 @@ static int get_next_char(void)
static char *parse_value(void)
{
static char value[1024];
- int quote = 0, comment = 0, len = 0, space = 0;
+ int quote = 0, comment = 0, space = 0;
+ size_t len = 0;

for (;;) {
int c = get_next_char();
+
if (len >= sizeof(value) - 1)
return NULL;
if (c == '\n') {
@@ -353,13 +355,13 @@ int perf_config_string(const char **dest, const char *var, const char *value)
return 0;
}

-static int perf_default_core_config(const char *var, const char *value)
+static int perf_default_core_config(const char *var __used, const char *value __used)
{
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}

-int perf_default_config(const char *var, const char *value, void *dummy)
+int perf_default_config(const char *var, const char *value, void *dummy __used)
{
if (!prefixcmp(var, "core."))
return perf_default_core_config(var, value);
@@ -471,10 +473,10 @@ static int matches(const char* key, const char* value)
!regexec(store.value_regex, value, 0, NULL, 0)));
}

-static int store_aux(const char* key, const char* value, void *cb)
+static int store_aux(const char* key, const char* value, void *cb __used)
{
+ int section_len;
const char *ep;
- size_t section_len;

switch (store.state) {
case KEY_SEEN:
@@ -551,7 +553,7 @@ static int store_write_section(int fd, const char* key)
strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
}

- success = write_in_full(fd, sb.buf, sb.len) == sb.len;
+ success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len);
strbuf_release(&sb);

return success;
@@ -599,7 +601,7 @@ static int store_write_pair(int fd, const char* key, const char* value)
}
strbuf_addf(&sb, "%s\n", quote);

- success = write_in_full(fd, sb.buf, sb.len) == sb.len;
+ success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len);
strbuf_release(&sb);

return success;
@@ -741,7 +743,7 @@ int perf_config_set_multivar(const char* key, const char* value,
} else {
struct stat st;
char* contents;
- size_t contents_sz, copy_begin, copy_end;
+ ssize_t contents_sz, copy_begin, copy_end;
int i, new_line = 0;

if (value_regex == NULL)
diff --git a/tools/perf/util/exec_cmd.c b/tools/perf/util/exec_cmd.c
index d392922..34a3528 100644
--- a/tools/perf/util/exec_cmd.c
+++ b/tools/perf/util/exec_cmd.c
@@ -1,6 +1,9 @@
#include "cache.h"
#include "exec_cmd.h"
#include "quote.h"
+
+#include <string.h>
+
#define MAX_ARGS 32

extern char **environ;
@@ -51,7 +54,7 @@ const char *perf_extract_argv0_path(const char *argv0)
slash--;

if (slash >= argv0) {
- argv0_path = strndup(argv0, slash - argv0);
+ argv0_path = xstrndup(argv0, slash - argv0);
return slash + 1;
}

diff --git a/tools/perf/util/help.c b/tools/perf/util/help.c
index 17a00e0..fbb0097 100644
--- a/tools/perf/util/help.c
+++ b/tools/perf/util/help.c
@@ -26,7 +26,7 @@ static int term_columns(void)
return 80;
}

-void add_cmdname(struct cmdnames *cmds, const char *name, int len)
+void add_cmdname(struct cmdnames *cmds, const char *name, size_t len)
{
struct cmdname *ent = malloc(sizeof(*ent) + len + 1);

@@ -40,7 +40,8 @@ void add_cmdname(struct cmdnames *cmds, const char *name, int len)

static void clean_cmdnames(struct cmdnames *cmds)
{
- int i;
+ unsigned int i;
+
for (i = 0; i < cmds->cnt; ++i)
free(cmds->names[i]);
free(cmds->names);
@@ -57,7 +58,7 @@ static int cmdname_compare(const void *a_, const void *b_)

static void uniq(struct cmdnames *cmds)
{
- int i, j;
+ unsigned int i, j;

if (!cmds->cnt)
return;
@@ -71,7 +72,7 @@ static void uniq(struct cmdnames *cmds)

void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes)
{
- int ci, cj, ei;
+ size_t ci, cj, ei;
int cmp;

ci = cj = ei = 0;
@@ -106,8 +107,9 @@ static void pretty_print_string_list(struct cmdnames *cmds, int longest)
printf(" ");

for (j = 0; j < cols; j++) {
- int n = j * rows + i;
- int size = space;
+ unsigned int n = j * rows + i;
+ unsigned int size = space;
+
if (n >= cmds->cnt)
break;
if (j == cols-1 || n + rows >= cmds->cnt)
@@ -208,7 +210,7 @@ void load_command_list(const char *prefix,
void list_commands(const char *title, struct cmdnames *main_cmds,
struct cmdnames *other_cmds)
{
- int i, longest = 0;
+ unsigned int i, longest = 0;

for (i = 0; i < main_cmds->cnt; i++)
if (longest < main_cmds->names[i]->len)
@@ -239,7 +241,8 @@ void list_commands(const char *title, struct cmdnames *main_cmds,

int is_in_cmdlist(struct cmdnames *c, const char *s)
{
- int i;
+ unsigned int i;
+
for (i = 0; i < c->cnt; i++)
if (!strcmp(s, c->names[i]->name))
return 1;
@@ -271,7 +274,8 @@ static int levenshtein_compare(const void *p1, const void *p2)

static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
{
- int i;
+ unsigned int i;
+
ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc);

for (i = 0; i < old->cnt; i++)
@@ -283,7 +287,7 @@ static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)

const char *help_unknown_cmd(const char *cmd)
{
- int i, n = 0, best_similarity = 0;
+ unsigned int i, n = 0, best_similarity = 0;
struct cmdnames main_cmds, other_cmds;

memset(&main_cmds, 0, sizeof(main_cmds));
@@ -345,7 +349,7 @@ const char *help_unknown_cmd(const char *cmd)
exit(1);
}

-int cmd_version(int argc, const char **argv, const char *prefix)
+int cmd_version(int argc __used, const char **argv __used, const char *prefix __used)
{
printf("perf version %s\n", perf_version_string);
return 0;
diff --git a/tools/perf/util/help.h b/tools/perf/util/help.h
index 56bc154..7128783 100644
--- a/tools/perf/util/help.h
+++ b/tools/perf/util/help.h
@@ -2,8 +2,8 @@
#define HELP_H

struct cmdnames {
- int alloc;
- int cnt;
+ size_t alloc;
+ size_t cnt;
struct cmdname {
size_t len; /* also used for similarity index in help.c */
char name[FLEX_ARRAY];
@@ -19,7 +19,7 @@ static inline void mput_char(char c, unsigned int num)
void load_command_list(const char *prefix,
struct cmdnames *main_cmds,
struct cmdnames *other_cmds);
-void add_cmdname(struct cmdnames *cmds, const char *name, int len);
+void add_cmdname(struct cmdnames *cmds, const char *name, size_t len);
/* Here we require that excludes is a sorted list. */
void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes);
int is_in_cmdlist(struct cmdnames *c, const char *s);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index e6b83a3..aed7090 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -385,7 +385,7 @@ static int parse_event_symbols(const char **str, struct perf_counter_attr *attr)
return 1;
}

-int parse_events(const struct option *opt, const char *str, int unset)
+int parse_events(const struct option *opt __used, const char *str, int unset __used)
{
struct perf_counter_attr attr;

diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index b3affb1..9a897b7 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -485,7 +485,7 @@ int parse_options_usage(const char * const *usagestr,
}

-int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
+int parse_opt_verbosity_cb(const struct option *opt, const char *arg __used,
int unset)
{
int *target = opt->value;
diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h
index a1039a6..15c8aba 100644
--- a/tools/perf/util/parse-options.h
+++ b/tools/perf/util/parse-options.h
@@ -90,21 +90,20 @@ struct option {
intptr_t defval;
};

-#define OPT_END() { OPTION_END }
-#define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, (h) }
-#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
-#define OPT_BIT(s, l, v, h, b) { OPTION_BIT, (s), (l), (v), NULL, (h), 0, NULL, (b) }
-#define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
-#define OPT_SET_INT(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, (h), 0, NULL, (i) }
-#define OPT_SET_PTR(s, l, v, h, p) { OPTION_SET_PTR, (s), (l), (v), NULL, (h), 0, NULL, (p) }
-#define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), NULL, (h) }
-#define OPT_LONG(s, l, v, h) { OPTION_LONG, (s), (l), (v), NULL, (h) }
-#define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v), (a), (h) }
+#define OPT_END() { .type = OPTION_END }
+#define OPT_ARGUMENT(l, h) { .type = OPTION_ARGUMENT, .long_name = (l), .help = (h) }
+#define OPT_GROUP(h) { .type = OPTION_GROUP, .help = (h) }
+#define OPT_BIT(s, l, v, h, b) { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (b) }
+#define OPT_BOOLEAN(s, l, v, h) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
+#define OPT_SET_INT(s, l, v, h, i) { .type = OPTION_SET_INT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (i) }
+#define OPT_SET_PTR(s, l, v, h, p) { .type = OPTION_SET_PTR, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (p) }
+#define OPT_INTEGER(s, l, v, h) { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
+#define OPT_LONG(s, l, v, h) { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
+#define OPT_STRING(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h) }
#define OPT_DATE(s, l, v, h) \
- { OPTION_CALLBACK, (s), (l), (v), "time",(h), 0, \
- parse_opt_approxidate_cb }
+ { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }
#define OPT_CALLBACK(s, l, v, a, h, f) \
- { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
+ { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) }

/* parse_options() will filter out the processed options and leave the
* non-option argments in argv[].
diff --git a/tools/perf/util/quote.c b/tools/perf/util/quote.c
index f18c521..c6e5dc0 100644
--- a/tools/perf/util/quote.c
+++ b/tools/perf/util/quote.c
@@ -162,12 +162,16 @@ static inline int sq_must_quote(char c)
return sq_lookup[(unsigned char)c] + quote_path_fully > 0;
}

-/* returns the longest prefix not needing a quote up to maxlen if positive.
- This stops at the first \0 because it's marked as a character needing an
- escape */
-static size_t next_quote_pos(const char *s, ssize_t maxlen)
+/*
+ * Returns the longest prefix not needing a quote up to maxlen if
+ * positive.
+ * This stops at the first \0 because it's marked as a character
+ * needing an escape.
+ */
+static ssize_t next_quote_pos(const char *s, ssize_t maxlen)
{
- size_t len;
+ ssize_t len;
+
if (maxlen < 0) {
for (len = 0; !sq_must_quote(s[len]); len++);
} else {
@@ -192,22 +196,22 @@ static size_t next_quote_pos(const char *s, ssize_t maxlen)
static size_t quote_c_style_counted(const char *name, ssize_t maxlen,
struct strbuf *sb, FILE *fp, int no_dq)
{
-#undef EMIT
-#define EMIT(c) \
- do { \
- if (sb) strbuf_addch(sb, (c)); \
- if (fp) fputc((c), fp); \
- count++; \
+#define EMIT(c) \
+ do { \
+ if (sb) strbuf_addch(sb, (c)); \
+ if (fp) fputc((c), fp); \
+ count++; \
} while (0)
-#define EMITBUF(s, l) \
- do { \
- int __ret; \
- if (sb) strbuf_add(sb, (s), (l)); \
- if (fp) __ret = fwrite((s), (l), 1, fp); \
- count += (l); \
+
+#define EMITBUF(s, l) \
+ do { \
+ int __ret; \
+ if (sb) strbuf_add(sb, (s), (l)); \
+ if (fp) __ret = fwrite((s), (l), 1, fp); \
+ count += (l); \
} while (0)

- size_t len, count = 0;
+ ssize_t len, count = 0;
const char *p = name;

for (;;) {
@@ -273,8 +277,8 @@ void write_name_quoted(const char *name, FILE *fp, int terminator)
fputc(terminator, fp);
}

-extern void write_name_quotedpfx(const char *pfx, size_t pfxlen,
- const char *name, FILE *fp, int terminator)
+void write_name_quotedpfx(const char *pfx, ssize_t pfxlen,
+ const char *name, FILE *fp, int terminator)
{
int needquote = 0;

@@ -306,7 +310,7 @@ char *quote_path_relative(const char *in, int len,
len = strlen(in);

/* "../" prefix itself does not need quoting, but "in" might. */
- needquote = next_quote_pos(in, len) < len;
+ needquote = (next_quote_pos(in, len) < len);
strbuf_setlen(out, 0);
strbuf_grow(out, len);

diff --git a/tools/perf/util/quote.h b/tools/perf/util/quote.h
index 5dfad89..a5454a1 100644
--- a/tools/perf/util/quote.h
+++ b/tools/perf/util/quote.h
@@ -53,7 +53,7 @@ extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq
extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);

extern void write_name_quoted(const char *name, FILE *, int terminator);
-extern void write_name_quotedpfx(const char *pfx, size_t pfxlen,
+extern void write_name_quotedpfx(const char *pfx, ssize_t pfxlen,
const char *name, FILE *, int terminator);

/* quote path as relative to the given prefix */
diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c
index 464e7ca..5249d5a 100644
--- a/tools/perf/util/strbuf.c
+++ b/tools/perf/util/strbuf.c
@@ -16,7 +16,7 @@ int prefixcmp(const char *str, const char *prefix)
*/
char strbuf_slopbuf[1];

-void strbuf_init(struct strbuf *sb, size_t hint)
+void strbuf_init(struct strbuf *sb, ssize_t hint)
{
sb->alloc = sb->len = 0;
sb->buf = strbuf_slopbuf;
@@ -92,7 +92,8 @@ void strbuf_ltrim(struct strbuf *sb)

void strbuf_tolower(struct strbuf *sb)
{
- int i;
+ unsigned int i;
+
for (i = 0; i < sb->len; i++)
sb->buf[i] = tolower(sb->buf[i]);
}
@@ -264,7 +265,7 @@ size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
return res;
}

-ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
+ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint)
{
size_t oldlen = sb->len;
size_t oldalloc = sb->alloc;
@@ -293,7 +294,7 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)

#define STRBUF_MAXLINK (2*PATH_MAX)

-int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
+int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint)
{
size_t oldalloc = sb->alloc;

@@ -301,7 +302,7 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
hint = 32;

while (hint < STRBUF_MAXLINK) {
- int len;
+ ssize_t len;

strbuf_grow(sb, hint);
len = readlink(path, sb->buf, hint);
@@ -343,7 +344,7 @@ int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
return 0;
}

-int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
+int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint)
{
int fd, len;

diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h
index 9ee908a..d2aa86c 100644
--- a/tools/perf/util/strbuf.h
+++ b/tools/perf/util/strbuf.h
@@ -50,7 +50,7 @@ struct strbuf {
#define STRBUF_INIT { 0, 0, strbuf_slopbuf }

/*----- strbuf life cycle -----*/
-extern void strbuf_init(struct strbuf *, size_t);
+extern void strbuf_init(struct strbuf *buf, ssize_t hint);
extern void strbuf_release(struct strbuf *);
extern char *strbuf_detach(struct strbuf *, size_t *);
extern void strbuf_attach(struct strbuf *, void *, size_t, size_t);
@@ -61,7 +61,7 @@ static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) {
}

/*----- strbuf size related -----*/
-static inline size_t strbuf_avail(const struct strbuf *sb) {
+static inline ssize_t strbuf_avail(const struct strbuf *sb) {
return sb->alloc ? sb->alloc - sb->len - 1 : 0;
}

@@ -122,9 +122,9 @@ extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);

extern size_t strbuf_fread(struct strbuf *, size_t, FILE *);
/* XXX: if read fails, any partial read is undone */
-extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint);
-extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
-extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint);
+extern ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint);
+extern int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint);
+extern int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint);

extern int strbuf_getline(struct strbuf *, FILE *, int);

diff --git a/tools/perf/util/wrapper.c b/tools/perf/util/wrapper.c
index 6350d65..4574ac2 100644
--- a/tools/perf/util/wrapper.c
+++ b/tools/perf/util/wrapper.c
@@ -7,7 +7,7 @@
* There's no pack memory to release - but stay close to the Git
* version so wrap this away:
*/
-static inline void release_pack_memory(size_t size, int flag)
+static inline void release_pack_memory(size_t size __used, int flag __used)
{
}

@@ -59,7 +59,8 @@ void *xmemdupz(const void *data, size_t len)
char *xstrndup(const char *str, size_t len)
{
char *p = memchr(str, '\0', len);
- return xmemdupz(str, p ? p - str : len);
+
+ return xmemdupz(str, p ? (size_t)(p - str) : len);
}

void *xrealloc(void *ptr, size_t size)