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78 lines
2.4 KiB
Diff
78 lines
2.4 KiB
Diff
commit 2770d15e7e880821fc586619c59eb45180628e16
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Author: Siddhesh Poyarekar <siddhesh@redhat.com>
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Date: Thu Oct 3 08:26:21 2013 +0530
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Fix PI mutex check in pthread_cond_broadcast and pthread_cond_signal
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Fixes BZ #15996.
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The check had a typo - it checked for PTHREAD_MUTEX_ROBUST_NP instead
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of PTHREAD_MUTEX_ROBUST_NORMAL_NP. It has now been replaced by the
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already existing convenience macro USE_REQUEUE_PI.
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---
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NEWS | 2 +-
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nptl/ChangeLog | 9 +++++++++
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nptl/pthread_cond_broadcast.c | 5 +----
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nptl/pthread_cond_signal.c | 7 +------
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4 files changed, 12 insertions(+), 11 deletions(-)
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--- a/NEWS
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+++ b/NEWS
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@@ -9,7 +9,7 @@
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* The following bugs are resolved with this release:
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- 15909.
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+ 15909, 15996.
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Version 2.18
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--- a/nptl/ChangeLog
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+++ b/nptl/ChangeLog
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@@ -1,3 +1,12 @@
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+2013-10-03 Siddhesh Poyarekar <siddhesh@redhat.com>
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+
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+ [BZ #15996]
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+ * pthread_cond_broadcast.c (__pthread_cond_broadcast)
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+ [lll_futex_cmp_requeue_pi && __ASSUME_REQUEUE_PI]: Use
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+ USE_REQUEUE_PI.
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+ * pthread_cond_signal.c (__pthread_cond_signal)
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+ [lll_futex_cmd_requeue_pi && __ASSUME_REQUEUE_PI]: Likewise.
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+
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2013-07-23 David S. Miller <davem@davemloft.net>
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* tst-cancel4.c (WRITE_BUFFER_SIZE): Adjust comment.
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--- a/nptl/pthread_cond_broadcast.c
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+++ b/nptl/pthread_cond_broadcast.c
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@@ -63,10 +63,7 @@
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#if (defined lll_futex_cmp_requeue_pi \
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&& defined __ASSUME_REQUEUE_PI)
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- int pi_flag = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NP;
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- pi_flag &= mut->__data.__kind;
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-
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- if (pi_flag == PTHREAD_MUTEX_PRIO_INHERIT_NP)
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+ if (USE_REQUEUE_PI (mut))
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{
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if (lll_futex_cmp_requeue_pi (&cond->__data.__futex, 1, INT_MAX,
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&mut->__data.__lock, futex_val,
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--- a/nptl/pthread_cond_signal.c
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+++ b/nptl/pthread_cond_signal.c
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@@ -49,14 +49,9 @@
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#if (defined lll_futex_cmp_requeue_pi \
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&& defined __ASSUME_REQUEUE_PI)
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- int pi_flag = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NP;
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pthread_mutex_t *mut = cond->__data.__mutex;
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- /* Do not use requeue for pshared condvars. */
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- if (mut != (void *) ~0l)
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- pi_flag &= mut->__data.__kind;
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-
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- if (__builtin_expect (pi_flag == PTHREAD_MUTEX_PRIO_INHERIT_NP, 0)
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+ if (USE_REQUEUE_PI (mut)
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/* This can only really fail with a ENOSYS, since nobody can modify
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futex while we have the cond_lock. */
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&& lll_futex_cmp_requeue_pi (&cond->__data.__futex, 1, 0,
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