Commit 9d6e323c authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'perf-fixes-for-linus' of...

Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf kmem: Fix statistics typo
  kprobes: Fix distinct type warning
  perf: Rename perf_event_hw_event in design document
  perf tools: Add missing header files to LIB_H Makefile variable
  perf record: We should fork only if a program was specified to run
  perf diff: Fix usage array, it must end with a NULL entry
parents b21c0704 4efb5290
......@@ -1035,7 +1035,7 @@ int __kprobes register_kretprobe(struct kretprobe *rp)
/* Pre-allocate memory for max kretprobe instances */
if (rp->maxactive <= 0) {
#ifdef CONFIG_PREEMPT
rp->maxactive = max(10, 2 * num_possible_cpus());
rp->maxactive = max_t(unsigned int, 10, 2*num_possible_cpus());
#else
rp->maxactive = num_possible_cpus();
#endif
......
......@@ -343,13 +343,18 @@ LIB_H += util/include/linux/string.h
LIB_H += util/include/linux/types.h
LIB_H += util/include/asm/asm-offsets.h
LIB_H += util/include/asm/bitops.h
LIB_H += util/include/asm/bug.h
LIB_H += util/include/asm/byteorder.h
LIB_H += util/include/asm/swab.h
LIB_H += util/include/asm/system.h
LIB_H += util/include/asm/uaccess.h
LIB_H += perf.h
LIB_H += util/cache.h
LIB_H += util/callchain.h
LIB_H += util/debug.h
LIB_H += util/debugfs.h
LIB_H += util/event.h
LIB_H += util/exec_cmd.h
LIB_H += util/types.h
LIB_H += util/levenshtein.h
LIB_H += util/parse-options.h
......@@ -362,6 +367,7 @@ LIB_H += util/session.h
LIB_H += util/strbuf.h
LIB_H += util/string.h
LIB_H += util/strlist.h
LIB_H += util/svghelper.h
LIB_H += util/run-command.h
LIB_H += util/sigchain.h
LIB_H += util/symbol.h
......@@ -370,6 +376,8 @@ LIB_H += util/values.h
LIB_H += util/sort.h
LIB_H += util/hist.h
LIB_H += util/thread.h
LIB_H += util/trace-event.h
LIB_H += util/trace-event-perl.h
LIB_H += util/probe-finder.h
LIB_H += util/probe-event.h
......
......@@ -17,7 +17,7 @@
static char const *input_name = "perf.data";
static int force;
static const char *const buildid_list_usage[] = {
static const char * const buildid_list_usage[] = {
"perf buildid-list [<options>]",
NULL
};
......
......@@ -189,8 +189,9 @@ out_delete:
return ret;
}
static const char *const diff_usage[] = {
static const char * const diff_usage[] = {
"perf diff [<options>] [old_file] [new_file]",
NULL,
};
static const struct option options[] = {
......
......@@ -137,7 +137,7 @@ static void insert_alloc_stat(unsigned long call_site, unsigned long ptr,
if (data && data->ptr == ptr) {
data->hit++;
data->bytes_req += bytes_req;
data->bytes_alloc += bytes_req;
data->bytes_alloc += bytes_alloc;
} else {
data = malloc(sizeof(*data));
if (!data)
......@@ -177,7 +177,7 @@ static void insert_caller_stat(unsigned long call_site,
if (data && data->call_site == call_site) {
data->hit++;
data->bytes_req += bytes_req;
data->bytes_alloc += bytes_req;
data->bytes_alloc += bytes_alloc;
} else {
data = malloc(sizeof(*data));
if (!data)
......
......@@ -402,7 +402,7 @@ static void atexit_header(void)
perf_header__write(&session->header, output, true);
}
static int __cmd_record(int argc __used, const char **argv)
static int __cmd_record(int argc, const char **argv)
{
int i, counter;
struct stat st;
......@@ -411,6 +411,7 @@ static int __cmd_record(int argc __used, const char **argv)
int err;
unsigned long waking = 0;
int child_ready_pipe[2], go_pipe[2];
const bool forks = target_pid == -1 && argc > 0;
char buf;
page_size = sysconf(_SC_PAGE_SIZE);
......@@ -422,7 +423,7 @@ static int __cmd_record(int argc __used, const char **argv)
signal(SIGCHLD, sig_handler);
signal(SIGINT, sig_handler);
if (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0) {
if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
perror("failed to create pipes");
exit(-1);
}
......@@ -483,7 +484,7 @@ static int __cmd_record(int argc __used, const char **argv)
atexit(atexit_header);
if (target_pid == -1) {
if (forks) {
pid = fork();
if (pid < 0) {
perror("failed to fork");
......@@ -550,7 +551,7 @@ static int __cmd_record(int argc __used, const char **argv)
return err;
}
if (!system_wide)
if (!system_wide && profile_cpu == -1)
event__synthesize_thread(pid, process_synthesized_event,
session);
else
......@@ -569,6 +570,7 @@ static int __cmd_record(int argc __used, const char **argv)
/*
* Let the child rip
*/
if (forks)
close(go_pipe[1]);
for (;;) {
......@@ -667,7 +669,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
argc = parse_options(argc, argv, options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && target_pid == -1 && (!system_wide || profile_cpu == -1))
if (!argc && target_pid == -1 && !system_wide && profile_cpu == -1)
usage_with_options(record_usage, options);
symbol__init();
......
......@@ -294,8 +294,7 @@ setup:
return 0;
}
//static const char * const report_usage[] = {
const char * const report_usage[] = {
static const char * const report_usage[] = {
"perf report [<options>] <command>",
NULL
};
......
......@@ -512,7 +512,7 @@ static char *get_script_path(const char *script_root, const char *suffix)
return path;
}
static const char * const annotate_usage[] = {
static const char * const trace_usage[] = {
"perf trace [<options>] <command>",
NULL
};
......@@ -581,7 +581,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
setup_scripting();
argc = parse_options(argc, argv, options, annotate_usage,
argc = parse_options(argc, argv, options, trace_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (symbol__init() < 0)
......
......@@ -21,7 +21,7 @@ There's one file descriptor per virtual counter used.
The special file descriptor is opened via the perf_event_open()
system call:
int sys_perf_event_open(struct perf_event_hw_event *hw_event_uptr,
int sys_perf_event_open(struct perf_event_attr *hw_event_uptr,
pid_t pid, int cpu, int group_fd,
unsigned long flags);
......@@ -32,9 +32,9 @@ can be used to set the blocking mode, etc.
Multiple counters can be kept open at a time, and the counters
can be poll()ed.
When creating a new counter fd, 'perf_event_hw_event' is:
When creating a new counter fd, 'perf_event_attr' is:
struct perf_event_hw_event {
struct perf_event_attr {
/*
* The MSB of the config word signifies if the rest contains cpu
* specific (raw) counter configuration data, if unset, the next
......@@ -399,7 +399,7 @@ Notification of new events is possible through poll()/select()/epoll() and
fcntl() managing signals.
Normally a notification is generated for every page filled, however one can
additionally set perf_event_hw_event.wakeup_events to generate one every
additionally set perf_event_attr.wakeup_events to generate one every
so many counter overflow events.
Future work will include a splice() interface to the ring-buffer.
......
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