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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-10-29 15:34:31 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-11-25 10:46:22 -0300
commit74f418b29d1e9463028f2ae4cc2a9c74d39aeaab (patch)
treeafc76155ba0a5384bc6d142742441dc2b27cdc6a /sysdeps/pthread/tst-mutex5.c
parentb45b1c5ba1df4d0315ffdd00a040ff9bc0597a8d (diff)
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nptl: Return EINVAL for pthread_mutex_clocklock/PI with CLOCK_MONOTONIC [BZ #26801]
Linux futex FUTEX_LOCK_PI operation only supports CLOCK_REALTIME,
so pthread_mutex_clocklock operation with priority aware mutexes
may fail depending of the input timeout.

Also, it is not possible to convert a CLOCK_MONOTONIC to a
CLOCK_REALTIME due the possible wall clock time change which might
invalid the requested timeout.

Checked on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Diffstat (limited to 'sysdeps/pthread/tst-mutex5.c')
-rw-r--r--sysdeps/pthread/tst-mutex5.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-mutex5.c b/sysdeps/pthread/tst-mutex5.c
index 14490768c3..bfe1a79fa4 100644
--- a/sysdeps/pthread/tst-mutex5.c
+++ b/sysdeps/pthread/tst-mutex5.c
@@ -112,7 +112,9 @@ static int do_test (void)
 {
   do_test_clock (CLOCK_USE_TIMEDLOCK, "timedlock");
   do_test_clock (CLOCK_REALTIME, "clocklock(realtime)");
+#ifndef ENABLE_PI
   do_test_clock (CLOCK_MONOTONIC, "clocklock(monotonic)");
+#endif
   return 0;
 }