1 files changed, 239 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-qoriq/0001-perf-bench-Share-some-global-variables-to-fix-build-.patch b/recipes-kernel/linux/linux-qoriq/0001-perf-bench-Share-some-global-variables-to-fix-build-.patch
new file mode 100644
index 00000000..b18ae803
--- /dev/null
+++ b/recipes-kernel/linux/linux-qoriq/0001-perf-bench-Share-some-global-variables-to-fix-build-.patch
@@ -0,0 +1,239 @@
+From e4d9b04b973b2dbce7b42af95ea70d07da1c936d Mon Sep 17 00:00:00 2001
+From: Arnaldo Carvalho de Melo <acme@redhat.com>
+Date: Mon, 2 Mar 2020 12:09:38 -0300
+Subject: [PATCH] perf bench: Share some global variables to fix build with gcc
+ 10
+
+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.
+
+Upstream-Status: Backport
+
+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>
+---
+ tools/perf/bench/bench.h         |  4 ++++
+ tools/perf/bench/epoll-ctl.c     |  7 +++----
+ tools/perf/bench/epoll-wait.c    | 11 +++++------
+ tools/perf/bench/futex-hash.c    | 12 ++++++------
+ tools/perf/bench/futex-lock-pi.c | 11 +++++------
+ 5 files changed, 23 insertions(+), 22 deletions(-)
+
+diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
+index fddb3ced9db6..4aa6de1aa67d 100644
+--- a/tools/perf/bench/bench.h
++++ b/tools/perf/bench/bench.h
+@@ -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
+diff --git a/tools/perf/bench/epoll-ctl.c b/tools/perf/bench/epoll-ctl.c
+index bb617e568841..a7526c05df38 100644
+--- a/tools/perf/bench/epoll-ctl.c
++++ b/tools/perf/bench/epoll-ctl.c
+@@ -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);
+ 
+diff --git a/tools/perf/bench/epoll-wait.c b/tools/perf/bench/epoll-wait.c
+index 7af694437f4e..d1c5cb526b9f 100644
+--- a/tools/perf/bench/epoll-wait.c
++++ b/tools/perf/bench/epoll-wait.c
+@@ -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);
+ 
+diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
+index 8ba0c3330a9a..21776862e940 100644
+--- a/tools/perf/bench/futex-hash.c
++++ b/tools/perf/bench/futex-hash.c
+@@ -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)
+diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c
+index d0cae8125423..30d97121dc4f 100644
+--- a/tools/perf/bench/futex-lock-pi.c
++++ b/tools/perf/bench/futex-lock-pi.c
+@@ -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)
+-- 
+2.17.1
+