rseq/selftests: Fix: Namespace gettid() for compatibility with glibc 2.30

commit 8df34c56321479bfa1ec732c675b686c2b4df412 upstream.

glibc 2.30 introduces gettid() in public headers, which clashes with
the internal static definition within rseq selftests.

Rename gettid() to rseq_gettid() to eliminate this symbol name clash.

Reported-by: Tommi T. Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Tommi T. Rantala <tommi.t.rantala@nokia.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@linux.ibm.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Paul Turner <pjt@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>	# v4.18+
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/tools/testing/selftests/rseq/param_test.c b/tools/testing/selftests/rseq/param_test.c
index eec2663..e8a657a 100644 (file)
--- a/tools/testing/selftests/rseq/param_test.c
+++ b/tools/testing/selftests/rseq/param_test.c
@@ -15,7 +15,7 @@
 #include <errno.h>
 #include <stddef.h>
 
-static inline pid_t gettid(void)
+static inline pid_t rseq_gettid(void)
 {
        return syscall(__NR_gettid);
 }
@@ -373,11 +373,12 @@ void *test_percpu_spinlock_thread(void *arg)
                rseq_percpu_unlock(&data->lock, cpu);
 #ifndef BENCHMARK
                if (i != 0 && !(i % (reps / 10)))
-                       printf_verbose("tid %d: count %lld\n", (int) gettid(), i);
+                       printf_verbose("tid %d: count %lld\n",
+                                      (int) rseq_gettid(), i);
 #endif
        }
        printf_verbose("tid %d: number of rseq abort: %d, signals delivered: %u\n",
-                      (int) gettid(), nr_abort, signals_delivered);
+                      (int) rseq_gettid(), nr_abort, signals_delivered);
        if (!opt_disable_rseq && thread_data->reg &&
            rseq_unregister_current_thread())
                abort();
@@ -454,11 +455,12 @@ void *test_percpu_inc_thread(void *arg)
                } while (rseq_unlikely(ret));
 #ifndef BENCHMARK
                if (i != 0 && !(i % (reps / 10)))
-                       printf_verbose("tid %d: count %lld\n", (int) gettid(), i);
+                       printf_verbose("tid %d: count %lld\n",
+                                      (int) rseq_gettid(), i);
 #endif
        }
        printf_verbose("tid %d: number of rseq abort: %d, signals delivered: %u\n",
-                      (int) gettid(), nr_abort, signals_delivered);
+                      (int) rseq_gettid(), nr_abort, signals_delivered);
        if (!opt_disable_rseq && thread_data->reg &&
            rseq_unregister_current_thread())
                abort();
@@ -605,7 +607,7 @@ void *test_percpu_list_thread(void *arg)
        }
 
        printf_verbose("tid %d: number of rseq abort: %d, signals delivered: %u\n",
-                      (int) gettid(), nr_abort, signals_delivered);
+                      (int) rseq_gettid(), nr_abort, signals_delivered);
        if (!opt_disable_rseq && rseq_unregister_current_thread())
                abort();
 
@@ -796,7 +798,7 @@ void *test_percpu_buffer_thread(void *arg)
        }
 
        printf_verbose("tid %d: number of rseq abort: %d, signals delivered: %u\n",
-                      (int) gettid(), nr_abort, signals_delivered);
+                      (int) rseq_gettid(), nr_abort, signals_delivered);
        if (!opt_disable_rseq && rseq_unregister_current_thread())
                abort();
 
@@ -1011,7 +1013,7 @@ void *test_percpu_memcpy_buffer_thread(void *arg)
        }
 
        printf_verbose("tid %d: number of rseq abort: %d, signals delivered: %u\n",
-                      (int) gettid(), nr_abort, signals_delivered);
+                      (int) rseq_gettid(), nr_abort, signals_delivered);
        if (!opt_disable_rseq && rseq_unregister_current_thread())
                abort();