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perf bench: Share some global variables to fix build with gcc 10

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Noticed with gcc 10 (fedora rawhide) that those variables were not being
declared as static, so end up with:

  ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `end'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `start'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  ld: /tmp/build/perf/bench/epoll-wait.o:/git/perf/tools/perf/bench/epoll-wait.c:93: multiple definition of `runtime'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `end'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `start'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  ld: /tmp/build/perf/bench/epoll-ctl.o:/git/perf/tools/perf/bench/epoll-ctl.c:38: multiple definition of `runtime'; /tmp/build/perf/bench/futex-hash.o:/git/perf/tools/perf/bench/futex-hash.c:40: first defined here
  make[4]: *** [/git/perf/tools/build/Makefile.build:145: /tmp/build/perf/bench/perf-in.o] Error 1

Prefix those with bench__ and add them to bench/bench.h, so that we can
share those on the tools needing to access those variables from signal
handlers.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20200303155811.GD13702@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-03-02 12:09:38 -03:00
parent 7125f20450
commit e4d9b04b97
5 changed files with 23 additions and 22 deletions
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4
tools/perf/bench/bench.h
View File

@ -2,6 +2,10 @@
#ifndef BENCH_H
#define BENCH_H
#include <sys/time.h>
extern struct timeval bench__start, bench__end, bench__runtime;
/*
* The madvise transparent hugepage constants were added in glibc
* 2.13. For compatibility with older versions of glibc, define these

7
tools/perf/bench/epoll-ctl.c
View File

@ -35,7 +35,6 @@
static unsigned int nthreads = 0;
static unsigned int nsecs = 8;
struct timeval start, end, runtime;
static bool done, __verbose, randomize;
/*
@ -94,8 +93,8 @@ static void toggle_done(int sig __maybe_unused,
{
/* inform all threads that we're done for the day */
done = true;
gettimeofday(&end, NULL);
timersub(&end, &start, &runtime);
gettimeofday(&bench__end, NULL);
timersub(&bench__end, &bench__start, &bench__runtime);
}
static void nest_epollfd(void)
@ -361,7 +360,7 @@ int bench_epoll_ctl(int argc, const char **argv)
threads_starting = nthreads;
gettimeofday(&start, NULL);
gettimeofday(&bench__start, NULL);
do_threads(worker, cpu);

11
tools/perf/bench/epoll-wait.c
View File

@ -90,7 +90,6 @@
static unsigned int nthreads = 0;
static unsigned int nsecs = 8;
struct timeval start, end, runtime;
static bool wdone, done, __verbose, randomize, nonblocking;
/*
@ -276,8 +275,8 @@ static void toggle_done(int sig __maybe_unused,
{
/* inform all threads that we're done for the day */
done = true;
gettimeofday(&end, NULL);
timersub(&end, &start, &runtime);
gettimeofday(&bench__end, NULL);
timersub(&bench__end, &bench__start, &bench__runtime);
}
static void print_summary(void)
@ -287,7 +286,7 @@ static void print_summary(void)
printf("\nAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
avg, rel_stddev_stats(stddev, avg),
(int) runtime.tv_sec);
(int)bench__runtime.tv_sec);
}
static int do_threads(struct worker *worker, struct perf_cpu_map *cpu)
@ -479,7 +478,7 @@ int bench_epoll_wait(int argc, const char **argv)
threads_starting = nthreads;
gettimeofday(&start, NULL);
gettimeofday(&bench__start, NULL);
do_threads(worker, cpu);
@ -519,7 +518,7 @@ int bench_epoll_wait(int argc, const char **argv)
qsort(worker, nthreads, sizeof(struct worker), cmpworker);
for (i = 0; i < nthreads; i++) {
unsigned long t = worker[i].ops/runtime.tv_sec;
unsigned long t = worker[i].ops / bench__runtime.tv_sec;
update_stats(&throughput_stats, t);

12
tools/perf/bench/futex-hash.c
View File

@ -37,7 +37,7 @@ static unsigned int nfutexes = 1024;
static bool fshared = false, done = false, silent = false;
static int futex_flag = 0;
struct timeval start, end, runtime;
struct timeval bench__start, bench__end, bench__runtime;
static pthread_mutex_t thread_lock;
static unsigned int threads_starting;
static struct stats throughput_stats;
@ -103,8 +103,8 @@ static void toggle_done(int sig __maybe_unused,
{
/* inform all threads that we're done for the day */
done = true;
gettimeofday(&end, NULL);
timersub(&end, &start, &runtime);
gettimeofday(&bench__end, NULL);
timersub(&bench__end, &bench__start, &bench__runtime);
}
static void print_summary(void)
@ -114,7 +114,7 @@ static void print_summary(void)
printf("%sAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
!silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg),
(int) runtime.tv_sec);
(int)bench__runtime.tv_sec);
}
int bench_futex_hash(int argc, const char **argv)
@ -161,7 +161,7 @@ int bench_futex_hash(int argc, const char **argv)
threads_starting = nthreads;
pthread_attr_init(&thread_attr);
gettimeofday(&start, NULL);
gettimeofday(&bench__start, NULL);
for (i = 0; i < nthreads; i++) {
worker[i].tid = i;
worker[i].futex = calloc(nfutexes, sizeof(*worker[i].futex));
@ -204,7 +204,7 @@ int bench_futex_hash(int argc, const char **argv)
pthread_mutex_destroy(&thread_lock);
for (i = 0; i < nthreads; i++) {
unsigned long t = worker[i].ops/runtime.tv_sec;
unsigned long t = worker[i].ops / bench__runtime.tv_sec;
update_stats(&throughput_stats, t);
if (!silent) {
if (nfutexes == 1)

11
tools/perf/bench/futex-lock-pi.c
View File

@ -37,7 +37,6 @@ static bool silent = false, multi = false;
static bool done = false, fshared = false;
static unsigned int nthreads = 0;
static int futex_flag = 0;
struct timeval start, end, runtime;
static pthread_mutex_t thread_lock;
static unsigned int threads_starting;
static struct stats throughput_stats;
@ -64,7 +63,7 @@ static void print_summary(void)
printf("%sAveraged %ld operations/sec (+- %.2f%%), total secs = %d\n",
!silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg),
(int) runtime.tv_sec);
(int)bench__runtime.tv_sec);
}
static void toggle_done(int sig __maybe_unused,
@ -73,8 +72,8 @@ static void toggle_done(int sig __maybe_unused,
{
/* inform all threads that we're done for the day */
done = true;
gettimeofday(&end, NULL);
timersub(&end, &start, &runtime);
gettimeofday(&bench__end, NULL);
timersub(&bench__end, &bench__start, &bench__runtime);
}
static void *workerfn(void *arg)
@ -185,7 +184,7 @@ int bench_futex_lock_pi(int argc, const char **argv)
threads_starting = nthreads;
pthread_attr_init(&thread_attr);
gettimeofday(&start, NULL);
gettimeofday(&bench__start, NULL);
create_threads(worker, thread_attr, cpu);
pthread_attr_destroy(&thread_attr);
@ -211,7 +210,7 @@ int bench_futex_lock_pi(int argc, const char **argv)
pthread_mutex_destroy(&thread_lock);
for (i = 0; i < nthreads; i++) {
unsigned long t = worker[i].ops/runtime.tv_sec;
unsigned long t = worker[i].ops / bench__runtime.tv_sec;
update_stats(&throughput_stats, t);
if (!silent)