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GNU C Library master sources branch, master, updated. glibc-2.15-1057-g1755728
- From: roland at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 25 May 2012 20:42:11 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.15-1057-g1755728
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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=17557282082870c7168d4bd9f386523c8c60d729
commit 17557282082870c7168d4bd9f386523c8c60d729
Author: Rayson Ho <rho@redhat.com>
Date: Wed Feb 23 11:30:55 2011 -0800
i386 port of the pthread SystemTap probes
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 9b63c53..a488ccb 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,4 +1,17 @@
2012-05-25 Rayson Ho <rho@redhat.com>
+
+ * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Low-level SystemTap
+ probes for i386.
+ * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S: Likewise.
+
+2012-05-25 Rayson Ho <rho@redhat.com>
Roland McGrath <roland@hack.frob.com>
* DESIGN-systemtap-probes.txt: New file.
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
index fe6d4b6..7c3212c 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2004,2006,2007,2009,2010 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -21,6 +21,8 @@
#include <kernel-features.h>
#include <lowlevellock.h>
+#include <stap-probe.h>
+
.text
#ifdef __ASSUME_PRIVATE_FUTEX
@@ -90,7 +92,8 @@ __lll_lock_wait_private:
cmpl %edx, %eax /* NB: %edx == 2 */
jne 2f
-1: movl $SYS_futex, %eax
+1: LIBC_PROBE (lll_lock_wait_private, 1, %ebx)
+ movl $SYS_futex, %eax
ENTER_KERNEL
2: movl %edx, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
index 71a6686..99f9bc9 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002,2003,2004,2006,2007,2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +23,7 @@
#include <kernel-features.h>
#include <pthread-pi-defines.h>
#include <pthread-errnos.h>
+#include <stap-probe.h>
.text
@@ -48,6 +49,8 @@ __pthread_cond_broadcast:
movl 20(%esp), %ebx
+ LIBC_PROBE (cond_broadcast, 1, %edx)
+
/* Get internal lock. */
movl $1, %edx
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
index 2af611a..e204805 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2005,2007,2009,2010 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,7 +23,7 @@
#include <kernel-features.h>
#include <pthread-pi-defines.h>
#include <pthread-errnos.h>
-
+#include <stap-probe.h>
.text
@@ -44,6 +44,8 @@ __pthread_cond_signal:
movl 12(%esp), %edi
+ LIBC_PROBE (cond_signal, 1, %edi)
+
/* Get internal lock. */
movl $1, %edx
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
index ff3da37..8170ab3 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2004,2006-2007,2009,2010 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,7 +23,7 @@
#include <pthread-errnos.h>
#include <pthread-pi-defines.h>
#include <kernel-features.h>
-
+#include <stap-probe.h>
.text
@@ -60,6 +60,8 @@ __pthread_cond_timedwait:
movl 20(%esp), %ebx
movl 28(%esp), %ebp
+ LIBC_PROBE (cond_timedwait, 3, %ebx, 24(%esp), %ebp)
+
cmpl $1000000000, 4(%ebp)
movl $EINVAL, %eax
jae 18f
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
index 1d7e751..2ae7af2 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
@@ -1,5 +1,4 @@
-/* Copyright (C) 2002-2004,2006-2007,2009,2010,2012
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -25,6 +24,7 @@
#include <pthread-errnos.h>
#include <pthread-pi-defines.h>
#include <kernel-features.h>
+#include <stap-probe.h>
.text
@@ -61,6 +61,8 @@ __pthread_cond_wait:
xorl %esi, %esi
movl 20(%esp), %ebx
+ LIBC_PROBE (cond_wait, 2, 24(%esp), %ebx)
+
/* Get internal lock. */
movl $1, %edx
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S
index 156fce8..ebbe809 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -22,6 +22,7 @@
#include <pthread-errnos.h>
#include <kernel-features.h>
+#include <stap-probe.h>
.text
@@ -40,6 +41,8 @@ __pthread_rwlock_rdlock:
xorl %esi, %esi
movl 12(%esp), %ebx
+ LIBC_PROBE (rdlock_entry, 1, %ebx)
+
/* Get the lock. */
movl $1, %edx
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S
index 3994b06..d30e93a 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S
+++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -22,6 +22,7 @@
#include <pthread-errnos.h>
#include <kernel-features.h>
+#include <stap-probe.h>
.text
@@ -40,6 +41,8 @@ __pthread_rwlock_wrlock:
xorl %esi, %esi
movl 12(%esp), %ebx
+ LIBC_PROBE (wrlock_entry, 1, %ebx)
+
/* Get the lock. */
movl $1, %edx
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index 497d473..3d805ff 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2004, 2006-2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -19,6 +19,8 @@
#ifndef _LOWLEVELLOCK_H
#define _LOWLEVELLOCK_H 1
+#include <stap-probe.h>
+
#ifndef __ASSEMBLER__
# include <time.h>
# include <sys/param.h>
@@ -225,6 +227,7 @@ LLL_STUB_UNWIND_INFO_END
do { \
int __ignore; \
register __typeof (nr) _nr asm ("edx") = (nr); \
+ LIBC_PROBE (lll_futex_wake, 3, futex, nr, private); \
__asm __volatile (LLL_EBX_LOAD \
LLL_ENTER_KERNEL \
LLL_EBX_LOAD \
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=5acf7263d52992ce4144e0a3b3644985b9e792b4
commit 5acf7263d52992ce4144e0a3b3644985b9e792b4
Author: Roland McGrath <roland@hack.frob.com>
Date: Fri May 25 13:35:08 2012 -0700
Add systemtap static probe points in generic and x86_64 pthread code.
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index ade0b18..9b63c53 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,32 @@
+2012-05-25 Rayson Ho <rho@redhat.com>
+ Roland McGrath <roland@hack.frob.com>
+
+ * DESIGN-systemtap-probes.txt: New file.
+ * pthread_cond_broadcast.c: SystemTap probes.
+ * pthread_cond_init.c: Likewise.
+ * pthread_cond_signal.c: Likewise.
+ * pthread_cond_wait.c: Likewise.
+ * pthread_cond_destroy.c: Likewise.
+ * pthread_create.c: Likewise.
+ * pthread_join.c: Likewise.
+ * pthread_mutex_destroy.c: Likewise.
+ * pthread_mutex_init.c: Likewise.
+ * pthread_mutex_lock.c: Likewise.
+ * pthread_mutex_timedlock.c: Likewise.
+ * pthread_mutex_unlock.c: Likewise.
+ * pthread_rwlock_destroy.c: Likewise.
+ * pthread_rwlock_rdlock.c: Likewise.
+ * pthread_rwlock_unlock.c: Likewise.
+ * pthread_rwlock_wrlock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S: Likewise.
+
2012-05-24 Roland McGrath <roland@hack.frob.com>
* pthread_create.c (start_thread): Define pthread_start LIBC_PROBE.
diff --git a/nptl/DESIGN-systemtap-probes.txt b/nptl/DESIGN-systemtap-probes.txt
new file mode 100644
index 0000000..16d7c45
--- /dev/null
+++ b/nptl/DESIGN-systemtap-probes.txt
@@ -0,0 +1,89 @@
+Systemtap is a dynamic tracing/instrumenting tool available on Linux. Probes
+that are not fired at run time have close to zero overhead.
+
+The following probes are available for NPTL:
+
+Thread creation & Join Probes
+=============================
+pthread_create - probe for pthread_create
+ arg1 = pointer (pthread_t*) to thread
+ arg2 = pointer (pthread_attr_t*) to attr
+ arg3 = pointer (void *) to start_routine
+ arg4 = arguments to start_routine
+pthread_start - probe for actual thread creation
+ arg1 = struct pthread (members include thread ID, process ID)
+ arg2 = address of start_routine
+ arg3 = pointer to the list of arguments
+pthread_join - probe for pthread_join
+ arg1 = thread ID
+pthread_join_ret - probe for pthread_join return
+ arg1 = thread ID
+ arg2 = return value
+
+Lock-related Probes
+===================
+mutex_init - probe for pthread_mutex_init
+ arg1 = address of mutex lock
+mutex_acquired - probe for succ. return of pthread_mutex_lock
+ arg1 = address of mutex lock
+mutex_timedlock_acquired - probe for succ. return of pthread_mutex_timedlock
+ arg1 = address of mutex lock
+mutex_entry - probe for entry to the pthread_mutex_lock function
+ arg1 = address of mutex lock
+mutex_timedlock_entry - probe for entry to the pthread_mutex_timedlock function
+ arg1 = address of mutex lock, arg2 = address of timespec
+mutex_release - probe for pthread_mutex_unlock after the successful release of a
+ mutex lock
+ arg1 = address of mutex lock
+mutex_destroy - probe for pthread_mutex_destroy
+ arg1 = address of mutex lock
+
+wrlock_entry - probe for entry to the pthread_rwlock_wrlock function
+ arg1 = address of rw lock
+rdlock_entry - probe for entry to the pthread_rwlock_rdlock function
+ arg1 = address of rw lock
+
+rwlock_destroy - probe for pthread_rwlock_destroy
+ arg1 = address of rw lock
+wrlock_acquire_write - probe for pthread_rwlock_wrlock (after getting the lock)
+ arg1 = address of rw lock
+rdlock_acquire_read - probe for pthread_rwlock_rdlock after successfully getting
+ the lock
+ arg1 = address of rw lock
+rwlock_unlock - probe for pthread_rwlock_unlock
+ arg1 = address of rw lock
+
+lll_lock_wait - probe in low-level (assembly language) locking code, only fired
+ when futex/FUTEX_WAIT is called (i.e. when trying to acquire a
+ contented lock)
+ arg1 = pointer to futex
+ arg2 = flags passed to the futex system call
+lll_lock_wait_private - probe in low-level (assembly language) locking code,
+ only fired when futex/FUTEX_WAIT is called (i.e. when
+ trying to acquire a contented lock)
+ arg1 = pointer to futex
+
+lll_futex_wake - probe in low-level (assembly language) locking code, only fired
+ when futex (FUTEX_WAKE) is called
+ arg1 = pointer to futex
+ arg2 = number of processes to wake
+ arg3 = additional flags
+
+Condition variable Probes
+=========================
+cond_init - probe for pthread_cond_init
+ arg1 = condition
+ arg2 = attr
+cond_destroy - probe for pthread_cond_destroy
+ arg1 = cond
+cond_wait - probe for pthread_cond_wait
+ arg1 = condition
+ arg2 = mutex lock
+cond_timedwait - probe for pthread_cond_timedwait
+ arg1 = condition
+ arg2 = mutex lock
+ arg3 = timespec
+cond_signal - probe for pthread_cond_signal
+ arg1 = condition
+cond_broadcast - probe for pthread_cond_broadcast
+ arg1 = condition
diff --git a/nptl/pthread_cond_broadcast.c b/nptl/pthread_cond_broadcast.c
index 9b67f75..7bc76ac 100644
--- a/nptl/pthread_cond_broadcast.c
+++ b/nptl/pthread_cond_broadcast.c
@@ -22,6 +22,7 @@
#include <lowlevellock.h>
#include <pthread.h>
#include <pthreadP.h>
+#include <stap-probe.h>
#include <shlib-compat.h>
#include <kernel-features.h>
@@ -31,6 +32,8 @@ int
__pthread_cond_broadcast (cond)
pthread_cond_t *cond;
{
+ LIBC_PROBE (cond_broadcast, 1, cond);
+
int pshared = (cond->__data.__mutex == (void *) ~0l)
? LLL_SHARED : LLL_PRIVATE;
/* Make sure we are alone. */
diff --git a/nptl/pthread_cond_destroy.c b/nptl/pthread_cond_destroy.c
index 0f03b29..5f57b56 100644
--- a/nptl/pthread_cond_destroy.c
+++ b/nptl/pthread_cond_destroy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -19,6 +19,7 @@
#include <errno.h>
#include <shlib-compat.h>
#include "pthreadP.h"
+#include <stap-probe.h>
int
@@ -28,6 +29,8 @@ __pthread_cond_destroy (cond)
int pshared = (cond->__data.__mutex == (void *) ~0l)
? LLL_SHARED : LLL_PRIVATE;
+ LIBC_PROBE (cond_destroy, 1, cond);
+
/* Make sure we are alone. */
lll_lock (cond->__data.__lock, pshared);
@@ -50,13 +53,13 @@ __pthread_cond_destroy (cond)
if (nwaiters >= (1 << COND_NWAITERS_SHIFT))
{
/* Wake everybody on the associated mutex in case there are
- threads that have been requeued to it.
- Without this, pthread_cond_destroy could block potentially
- for a long time or forever, as it would depend on other
- thread's using the mutex.
- When all threads waiting on the mutex are woken up, pthread_cond_wait
- only waits for threads to acquire and release the internal
- condvar lock. */
+ threads that have been requeued to it.
+ Without this, pthread_cond_destroy could block potentially
+ for a long time or forever, as it would depend on other
+ thread's using the mutex.
+ When all threads waiting on the mutex are woken up, pthread_cond_wait
+ only waits for threads to acquire and release the internal
+ condvar lock. */
if (cond->__data.__mutex != NULL
&& cond->__data.__mutex != (void *) ~0l)
{
diff --git a/nptl/pthread_cond_init.c b/nptl/pthread_cond_init.c
index dcc6b3c..554fe6f 100644
--- a/nptl/pthread_cond_init.c
+++ b/nptl/pthread_cond_init.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -19,6 +18,7 @@
#include <shlib-compat.h>
#include "pthreadP.h"
+#include <stap-probe.h>
int
@@ -41,6 +41,8 @@ __pthread_cond_init (cond, cond_attr)
? NULL : (void *) ~0l);
cond->__data.__broadcast_seq = 0;
+ LIBC_PROBE (cond_init, 2, cond, cond_attr);
+
return 0;
}
versioned_symbol (libpthread, __pthread_cond_init,
diff --git a/nptl/pthread_cond_signal.c b/nptl/pthread_cond_signal.c
index e4716f2..063dcbc 100644
--- a/nptl/pthread_cond_signal.c
+++ b/nptl/pthread_cond_signal.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
@@ -25,6 +25,7 @@
#include <shlib-compat.h>
#include <kernel-features.h>
+#include <stap-probe.h>
int
@@ -34,6 +35,8 @@ __pthread_cond_signal (cond)
int pshared = (cond->__data.__mutex == (void *) ~0l)
? LLL_SHARED : LLL_PRIVATE;
+ LIBC_PROBE (cond_signal, 1, cond);
+
/* Make sure we are alone. */
lll_lock (cond->__data.__lock, pshared);
diff --git a/nptl/pthread_cond_wait.c b/nptl/pthread_cond_wait.c
index c05d06c..35505d9 100644
--- a/nptl/pthread_cond_wait.c
+++ b/nptl/pthread_cond_wait.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003,2004,2006,2007,2011 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
@@ -24,6 +24,7 @@
#include <pthreadP.h>
#include <shlib-compat.h>
+#include <stap-probe.h>
struct _condvar_cleanup_buffer
@@ -43,7 +44,7 @@ __condvar_cleanup (void *arg)
(struct _condvar_cleanup_buffer *) arg;
unsigned int destroying;
int pshared = (cbuffer->cond->__data.__mutex == (void *) ~0l)
- ? LLL_SHARED : LLL_PRIVATE;
+ ? LLL_SHARED : LLL_PRIVATE;
/* We are going to modify shared data. */
lll_lock (cbuffer->cond->__data.__lock, pshared);
@@ -98,7 +99,9 @@ __pthread_cond_wait (cond, mutex)
struct _condvar_cleanup_buffer cbuffer;
int err;
int pshared = (cond->__data.__mutex == (void *) ~0l)
- ? LLL_SHARED : LLL_PRIVATE;
+ ? LLL_SHARED : LLL_PRIVATE;
+
+ LIBC_PROBE (cond_wait, 2, cond, mutex);
/* Make sure we are alone. */
lll_lock (cond->__data.__lock, pshared);
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index c52ae11..97d8325 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2007,2008,2009,2010,2011 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -560,6 +560,8 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg)
/* Pass the descriptor to the caller. */
*newthread = (pthread_t) pd;
+ LIBC_PROBE (pthread_create, 4, newthread, attr, start_routine, arg);
+
/* Start the thread. */
return create_thread (pd, iattr, STACK_VARIABLES_ARGS);
}
diff --git a/nptl/pthread_join.c b/nptl/pthread_join.c
index b8834cc..bf1a01d 100644
--- a/nptl/pthread_join.c
+++ b/nptl/pthread_join.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -22,6 +22,8 @@
#include <atomic.h>
#include "pthreadP.h"
+#include <stap-probe.h>
+
static void
cleanup (void *arg)
@@ -54,6 +56,8 @@ pthread_join (threadid, thread_return)
struct pthread *self = THREAD_SELF;
int result = 0;
+ LIBC_PROBE (pthread_join, 1, threadid);
+
/* During the wait we change to asynchronous cancellation. If we
are canceled the thread we are waiting for must be marked as
un-wait-ed for again. */
@@ -109,5 +113,7 @@ pthread_join (threadid, thread_return)
__free_tcb (pd);
}
+ LIBC_PROBE (pthread_join_ret, 3, threadid, result, pd->result);
+
return result;
}
diff --git a/nptl/pthread_mutex_destroy.c b/nptl/pthread_mutex_destroy.c
index 408b16a..107ec8e 100644
--- a/nptl/pthread_mutex_destroy.c
+++ b/nptl/pthread_mutex_destroy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -19,11 +19,15 @@
#include <errno.h>
#include "pthreadP.h"
+#include <stap-probe.h>
+
int
__pthread_mutex_destroy (mutex)
pthread_mutex_t *mutex;
{
+ LIBC_PROBE (mutex_destroy, 1, mutex);
+
if ((mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP) == 0
&& mutex->__data.__nusers != 0)
return EBUSY;
diff --git a/nptl/pthread_mutex_init.c b/nptl/pthread_mutex_init.c
index 0596e07..6536e44 100644
--- a/nptl/pthread_mutex_init.c
+++ b/nptl/pthread_mutex_init.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +22,8 @@
#include <kernel-features.h>
#include "pthreadP.h"
+#include <stap-probe.h>
+
static const struct pthread_mutexattr default_attr =
{
/* Default is a normal mutex, not shared between processes. */
@@ -134,6 +135,8 @@ __pthread_mutex_init (mutex, mutexattr)
// mutex->__spins = 0; already done by memset
// mutex->__next = NULL; already done by memset
+ LIBC_PROBE (mutex_init, 1, mutex);
+
return 0;
}
strong_alias (__pthread_mutex_init, pthread_mutex_init)
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c
index c747355..2b30bad 100644
--- a/nptl/pthread_mutex_lock.c
+++ b/nptl/pthread_mutex_lock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2007, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +23,7 @@
#include <not-cancel.h>
#include "pthreadP.h"
#include <lowlevellock.h>
+#include <stap-probe.h>
#ifndef LLL_MUTEX_LOCK
@@ -47,6 +48,9 @@ __pthread_mutex_lock (mutex)
assert (sizeof (mutex->__size) >= sizeof (mutex->__data));
unsigned int type = PTHREAD_MUTEX_TYPE (mutex);
+
+ LIBC_PROBE (mutex_entry, 1, mutex);
+
if (__builtin_expect (type & ~PTHREAD_MUTEX_KIND_MASK_NP, 0))
return __pthread_mutex_lock_full (mutex);
@@ -126,6 +130,8 @@ __pthread_mutex_lock (mutex)
++mutex->__data.__nusers;
#endif
+ LIBC_PROBE (mutex_acquired, 1, mutex);
+
return 0;
}
@@ -466,6 +472,8 @@ __pthread_mutex_lock_full (pthread_mutex_t *mutex)
++mutex->__data.__nusers;
#endif
+ LIBC_PROBE (mutex_acquired, 1, mutex);
+
return 0;
}
#ifndef __pthread_mutex_lock
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c
index b7f34d4..52fa74c 100644
--- a/nptl/pthread_mutex_timedlock.c
+++ b/nptl/pthread_mutex_timedlock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +23,8 @@
#include <lowlevellock.h>
#include <not-cancel.h>
+#include <stap-probe.h>
+
int
pthread_mutex_timedlock (mutex, abstime)
@@ -33,6 +35,8 @@ pthread_mutex_timedlock (mutex, abstime)
pid_t id = THREAD_GETMEM (THREAD_SELF, tid);
int result = 0;
+ LIBC_PROBE (mutex_timedlock_entry, 2, mutex, abstime);
+
/* We must not check ABSTIME here. If the thread does not block
abstime must not be checked for a valid value. */
@@ -171,6 +175,8 @@ pthread_mutex_timedlock (mutex, abstime)
++mutex->__data.__count;
+ LIBC_PROBE (mutex_timedlock_acquired, 1, mutex);
+
return 0;
}
}
@@ -241,6 +247,8 @@ pthread_mutex_timedlock (mutex, abstime)
++mutex->__data.__count;
+ LIBC_PROBE (mutex_timedlock_acquired, 1, mutex);
+
return 0;
}
}
@@ -376,6 +384,8 @@ pthread_mutex_timedlock (mutex, abstime)
++mutex->__data.__count;
+ LIBC_PROBE (mutex_timedlock_acquired, 1, mutex);
+
return 0;
}
}
@@ -476,6 +486,8 @@ pthread_mutex_timedlock (mutex, abstime)
/* Record the ownership. */
mutex->__data.__owner = id;
++mutex->__data.__nusers;
+
+ LIBC_PROBE (mutex_timedlock_acquired, 1, mutex);
}
out:
diff --git a/nptl/pthread_mutex_unlock.c b/nptl/pthread_mutex_unlock.c
index 0f35f62..aa8ecbd 100644
--- a/nptl/pthread_mutex_unlock.c
+++ b/nptl/pthread_mutex_unlock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005-2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -21,6 +21,7 @@
#include <stdlib.h>
#include "pthreadP.h"
#include <lowlevellock.h>
+#include <stap-probe.h>
static int
internal_function
@@ -49,6 +50,9 @@ __pthread_mutex_unlock_usercnt (mutex, decr)
/* Unlock. */
lll_unlock (mutex->__data.__lock, PTHREAD_MUTEX_PSHARED (mutex));
+
+ LIBC_PROBE (mutex_release, 1, mutex);
+
return 0;
}
else if (__builtin_expect (type == PTHREAD_MUTEX_RECURSIVE_NP, 1))
@@ -271,6 +275,9 @@ __pthread_mutex_unlock_full (pthread_mutex_t *mutex, int decr)
PTHREAD_MUTEX_PSHARED (mutex));
int oldprio = newval >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
+
+ LIBC_PROBE (mutex_release, 1, mutex);
+
return __pthread_tpp_change_priority (oldprio, -1);
default:
@@ -278,6 +285,7 @@ __pthread_mutex_unlock_full (pthread_mutex_t *mutex, int decr)
return EINVAL;
}
+ LIBC_PROBE (mutex_release, 1, mutex);
return 0;
}
diff --git a/nptl/pthread_rwlock_destroy.c b/nptl/pthread_rwlock_destroy.c
index 606833a..78abe5e 100644
--- a/nptl/pthread_rwlock_destroy.c
+++ b/nptl/pthread_rwlock_destroy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -17,12 +17,15 @@
<http://www.gnu.org/licenses/>. */
#include "pthreadP.h"
+#include <stap-probe.h>
int
__pthread_rwlock_destroy (rwlock)
pthread_rwlock_t *rwlock;
{
+ LIBC_PROBE (rwlock_destroy, 1, rwlock);
+
/* Nothing to be done. For now. */
return 0;
}
diff --git a/nptl/pthread_rwlock_rdlock.c b/nptl/pthread_rwlock_rdlock.c
index 4aa1c5b..14688e2 100644
--- a/nptl/pthread_rwlock_rdlock.c
+++ b/nptl/pthread_rwlock_rdlock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003,2004,2007,2011 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
@@ -21,6 +21,7 @@
#include <lowlevellock.h>
#include <pthread.h>
#include <pthreadP.h>
+#include <stap-probe.h>
/* Acquire read lock for RWLOCK. */
@@ -30,6 +31,8 @@ __pthread_rwlock_rdlock (rwlock)
{
int result = 0;
+ LIBC_PROBE (rdlock_entry, 1, rwlock);
+
/* Make sure we are alone. */
lll_lock (rwlock->__data.__lock, rwlock->__data.__shared);
@@ -48,6 +51,8 @@ __pthread_rwlock_rdlock (rwlock)
--rwlock->__data.__nr_readers;
result = EAGAIN;
}
+ else
+ LIBC_PROBE (rdlock_acquire_read, 1, rwlock);
break;
}
diff --git a/nptl/pthread_rwlock_unlock.c b/nptl/pthread_rwlock_unlock.c
index 15418c8..a727d89 100644
--- a/nptl/pthread_rwlock_unlock.c
+++ b/nptl/pthread_rwlock_unlock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
@@ -21,11 +21,14 @@
#include <lowlevellock.h>
#include <pthread.h>
#include <pthreadP.h>
+#include <stap-probe.h>
/* Unlock RWLOCK. */
int
__pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
{
+ LIBC_PROBE (rwlock_unlock, 1, rwlock);
+
lll_lock (rwlock->__data.__lock, rwlock->__data.__shared);
if (rwlock->__data.__writer)
rwlock->__data.__writer = 0;
diff --git a/nptl/pthread_rwlock_wrlock.c b/nptl/pthread_rwlock_wrlock.c
index a645487..6d8fb93 100644
--- a/nptl/pthread_rwlock_wrlock.c
+++ b/nptl/pthread_rwlock_wrlock.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003,2007,2011 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
@@ -21,6 +21,7 @@
#include <lowlevellock.h>
#include <pthread.h>
#include <pthreadP.h>
+#include <stap-probe.h>
/* Acquire write lock for RWLOCK. */
@@ -30,6 +31,8 @@ __pthread_rwlock_wrlock (rwlock)
{
int result = 0;
+ LIBC_PROBE (wrlock_entry, 1, rwlock);
+
/* Make sure we are alone. */
lll_lock (rwlock->__data.__lock, rwlock->__data.__shared);
@@ -40,6 +43,8 @@ __pthread_rwlock_wrlock (rwlock)
{
/* Mark self as writer. */
rwlock->__data.__writer = THREAD_GETMEM (THREAD_SELF, tid);
+
+ LIBC_PROBE (wrlock_acquire_write, 1, rwlock);
break;
}
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
index b7bfc37..dc95421 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -21,6 +21,8 @@
#include <kernel-features.h>
#include <lowlevellock.h>
+#include <stap-probe.h>
+
.text
#ifdef __ASSUME_PRIVATE_FUTEX
@@ -86,7 +88,8 @@ __lll_lock_wait_private:
cmpl %edx, %eax /* NB: %edx == 2 */
jne 2f
-1: movl $SYS_futex, %eax
+1: LIBC_PROBE (lll_lock_wait_private, 1, %rdi)
+ movl $SYS_futex, %eax
syscall
2: movl %edx, %eax
@@ -125,7 +128,8 @@ __lll_lock_wait:
cmpl %edx, %eax /* NB: %edx == 2 */
jne 2f
-1: movl $SYS_futex, %eax
+1: LIBC_PROBE (lll_lock_wait, 2, %rdi, %rsi)
+ movl $SYS_futex, %eax
syscall
2: movl %edx, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index ad14185..3686970 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -1,5 +1,4 @@
-/* Copyright (C) 2002-2004, 2006-2008, 2009, 2012
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -20,6 +19,8 @@
#ifndef _LOWLEVELLOCK_H
#define _LOWLEVELLOCK_H 1
+#include <stap-probe.h>
+
#ifndef __ASSEMBLER__
# include <time.h>
# include <sys/param.h>
@@ -227,6 +228,7 @@ LLL_STUB_UNWIND_INFO_END
do { \
int __ignore; \
register __typeof (nr) _nr __asm ("edx") = (nr); \
+ LIBC_PROBE (lll_futex_wake, 3, futex, nr, private); \
__asm __volatile ("syscall" \
: "=a" (__ignore) \
: "0" (SYS_futex), "D" (futex), \
@@ -286,7 +288,7 @@ LLL_STUB_UNWIND_INFO_END
"je 0f\n\t" \
"lock; cmpxchgl %4, %2\n\t" \
"jnz 1f\n\t" \
- "jmp 24f\n" \
+ "jmp 24f\n" \
"0:\tcmpxchgl %4, %2\n\t" \
"jnz 1f\n\t"
#endif
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S
index 7b0eec1..67ff5fc 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S
@@ -1,5 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009
- Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -24,7 +23,7 @@
#include <kernel-features.h>
#include <pthread-pi-defines.h>
#include <pthread-errnos.h>
-
+#include <stap-probe.h>
.text
@@ -34,6 +33,8 @@
.align 16
__pthread_cond_broadcast:
+ LIBC_PROBE (cond_broadcast, 1, %rdi)
+
/* Get internal lock. */
movl $1, %esi
xorl %eax, %eax
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
index a77b7d5..3bff19b 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2005, 2007, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +23,7 @@
#include <pthread-pi-defines.h>
#include <kernel-features.h>
#include <pthread-errnos.h>
+#include <stap-probe.h>
.text
@@ -33,6 +34,8 @@
.align 16
__pthread_cond_signal:
+ LIBC_PROBE (cond_signal, 1, %rdi)
+
/* Get internal lock. */
movq %rdi, %r8
movl $1, %esi
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
index 79bfecd..50e1ffd 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2005,2007,2009,2010,2011 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -22,6 +22,7 @@
#include <lowlevelcond.h>
#include <pthread-pi-defines.h>
#include <pthread-errnos.h>
+#include <stap-probe.h>
#include <kernel-features.h>
@@ -67,6 +68,8 @@ __pthread_cond_timedwait:
cfi_adjust_cfa_offset(FRAME_SIZE)
cfi_remember_state
+ LIBC_PROBE (cond_timedwait, 3, %rdi, %rsi, %rdx)
+
cmpq $1000000000, 8(%rdx)
movl $EINVAL, %eax
jae 48f
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
index 6c1031e..6194852 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2007, 2009, 2011 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -23,6 +23,7 @@
#include <tcb-offsets.h>
#include <pthread-pi-defines.h>
#include <pthread-errnos.h>
+#include <stap-probe.h>
#include <kernel-features.h>
@@ -54,20 +55,22 @@ __pthread_cond_wait:
rsp + 32
+--------------------------+
rsp + 24 | old wake_seq value |
- +--------------------------+
+ +--------------------------+
rsp + 16 | mutex pointer |
- +--------------------------+
+ +--------------------------+
rsp + 8 | condvar pointer |
- +--------------------------+
+ +--------------------------+
rsp + 4 | old broadcast_seq value |
- +--------------------------+
+ +--------------------------+
rsp + 0 | old cancellation mode |
- +--------------------------+
+ +--------------------------+
*/
+ LIBC_PROBE (cond_wait, 2, %rdi, %rsi)
+
LP_OP(cmp) $-1, dep_mutex(%rdi)
- /* Prepare structure passed to cancellation handler. */
+ /* Prepare structure passed to cancellation handler. */
movq %rdi, 8(%rsp)
movq %rsi, 16(%rsp)
@@ -406,15 +409,15 @@ __condvar_cleanup1:
rsp + 32
+--------------------------+
rsp + 24 | unused |
- +--------------------------+
+ +--------------------------+
rsp + 16 | mutex pointer |
- +--------------------------+
+ +--------------------------+
rsp + 8 | condvar pointer |
- +--------------------------+
+ +--------------------------+
rsp + 4 | old broadcast_seq value |
- +--------------------------+
+ +--------------------------+
rsp + 0 | old cancellation mode |
- +--------------------------+
+ +--------------------------+
*/
movq %rax, 24(%rsp)
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S
index c076185..abb3057 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -21,7 +21,7 @@
#include <lowlevelrwlock.h>
#include <pthread-errnos.h>
#include <kernel-features.h>
-
+#include <stap-probe.h>
.text
@@ -30,6 +30,9 @@
.align 16
__pthread_rwlock_rdlock:
cfi_startproc
+
+ LIBC_PROBE (rdlock_entry, 1, %rdi)
+
xorq %r10, %r10
/* Get the lock. */
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S
index b349554..f6a6bff 100644
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -21,7 +21,7 @@
#include <lowlevelrwlock.h>
#include <pthread-errnos.h>
#include <kernel-features.h>
-
+#include <stap-probe.h>
.text
@@ -30,6 +30,9 @@
.align 16
__pthread_rwlock_wrlock:
cfi_startproc
+
+ LIBC_PROBE (wrlock_entry, 1, %rdi)
+
xorq %r10, %r10
/* Get the lock. */
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8422c9a560e6e3c854739c8a13ecb1c6714f930f
commit 8422c9a560e6e3c854739c8a13ecb1c6714f930f
Author: Roland McGrath <roland@hack.frob.com>
Date: Fri May 25 13:31:57 2012 -0700
Add systemtap static probe points in setjmp/longjmp on x86.
diff --git a/ChangeLog b/ChangeLog
index e89af6f..e1a0834 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
2012-05-25 Roland McGrath <roland@hack.frob.com>
+ * sysdeps/x86_64/__longjmp.S: Add a static probe here.
+ * sysdeps/x86_64/setjmp.S: Likewise.
+ * sysdeps/i386/bsd-setjmp.S: Likewise.
+ * sysdeps/i386/bsd-_setjmp.S: Likewise.
+ * sysdeps/i386/setjmp.S: Likewise.
+ * sysdeps/i386/__longjmp.S: Likewise.
+ * sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Likewise.
+ * sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Likewise.
+
* include/stap-probe.h: New file.
* configure.in: Handle --enable-systemtap.
* configure: Regenerated.
diff --git a/sysdeps/i386/__longjmp.S b/sysdeps/i386/__longjmp.S
index 264eb7e..74c8347 100644
--- a/sysdeps/i386/__longjmp.S
+++ b/sysdeps/i386/__longjmp.S
@@ -1,6 +1,5 @@
/* longjmp for i386.
- Copyright (C) 1995-1998,2000,2002,2005,2006,2009
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -20,6 +19,7 @@
#include <sysdep.h>
#include <jmpbuf-offsets.h>
#include <asm-syntax.h>
+#include <stap-probe.h>
.text
ENTRY (__longjmp)
@@ -32,6 +32,7 @@ ENTRY (__longjmp)
movl (JB_SP*4)(%eax), %ecx
PTR_DEMANGLE (%edx)
PTR_DEMANGLE (%ecx)
+ LIBC_PROBE (longjmp, 3, 4@%eax, -4@8(%esp), 4@%edx)
cfi_def_cfa(%eax, 0)
cfi_register(%eip, %edx)
cfi_register(%esp, %ecx)
@@ -49,6 +50,7 @@ ENTRY (__longjmp)
cfi_restore(%edi)
cfi_restore(%ebp)
+ LIBC_PROBE (longjmp_target, 3, 4@%eax, -4@8(%esp), 4@%edx)
movl 8(%esp), %eax /* Second argument is return value. */
movl %ecx, %esp
#else
@@ -56,12 +58,14 @@ ENTRY (__longjmp)
movl 8(%esp), %eax /* Second argument is return value. */
/* Save the return address now. */
movl (JB_PC*4)(%ecx), %edx
+ LIBC_PROBE (longjmp, 3, 4@%ecx, -4@%eax, 4@%edx)
/* Restore registers. */
movl (JB_BX*4)(%ecx), %ebx
movl (JB_SI*4)(%ecx), %esi
movl (JB_DI*4)(%ecx), %edi
movl (JB_BP*4)(%ecx), %ebp
movl (JB_SP*4)(%ecx), %esp
+ LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%ecx, 4@%edx)
#endif
/* Jump to saved PC. */
jmp *%edx
diff --git a/sysdeps/i386/bsd-_setjmp.S b/sysdeps/i386/bsd-_setjmp.S
index 549aefa..8a5d0d8 100644
--- a/sysdeps/i386/bsd-_setjmp.S
+++ b/sysdeps/i386/bsd-_setjmp.S
@@ -1,5 +1,5 @@
/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version.
- Copyright (C) 1994-1997,2000-2002,2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 1994-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
#include <jmpbuf-offsets.h>
#include "bp-sym.h"
#include "bp-asm.h"
+#include <stap-probe.h>
#define PARMS LINKAGE /* no space for saved regs */
#define JMPBUF PARMS
@@ -46,6 +47,7 @@ ENTRY (BP_SYM (_setjmp))
#endif
movl %ecx, (JB_SP*4)(%edx)
movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
+ LIBC_PROBE (setjmp, 3, 4@%edx, -4@$0, 4@%ecx)
#ifdef PTR_MANGLE
PTR_MANGLE (%ecx)
#endif
diff --git a/sysdeps/i386/bsd-setjmp.S b/sysdeps/i386/bsd-setjmp.S
index 447fd7d..d3a284e 100644
--- a/sysdeps/i386/bsd-setjmp.S
+++ b/sysdeps/i386/bsd-setjmp.S
@@ -1,5 +1,5 @@
/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version.
- Copyright (C) 1994-1997,2000,2001,2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 1994-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
#include <jmpbuf-offsets.h>
#include "bp-sym.h"
#include "bp-asm.h"
+#include <stap-probe.h>
#define PARMS LINKAGE /* no space for saved regs */
#define JMPBUF PARMS
@@ -48,6 +49,7 @@ ENTRY (BP_SYM (setjmp))
#endif
movl %ecx, (JB_SP*4)(%eax)
movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
+ LIBC_PROBE (setjmp, 3, 4@%eax, -4@$1, 4@%ecx)
#ifdef PTR_MANGLE
PTR_MANGLE (%ecx)
#endif
diff --git a/sysdeps/i386/setjmp.S b/sysdeps/i386/setjmp.S
index 7416744..bf47f66 100644
--- a/sysdeps/i386/setjmp.S
+++ b/sysdeps/i386/setjmp.S
@@ -1,6 +1,5 @@
/* setjmp for i386.
- Copyright (C) 1995,1996,1997,2000,2001,2005,2006
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -22,6 +21,7 @@
#include <asm-syntax.h>
#include "bp-sym.h"
#include "bp-asm.h"
+#include <stap-probe.h>
#define PARMS LINKAGE /* no space for saved regs */
#define JMPBUF PARMS
@@ -43,6 +43,7 @@ ENTRY (BP_SYM (__sigsetjmp))
#endif
movl %ecx, (JB_SP*4)(%eax)
movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
+ LIBC_PROBE (setjmp, 3, 4@%eax, -4@SIGMSK(%esp), 4@%ecx)
#ifdef PTR_MANGLE
PTR_MANGLE (%ecx)
#endif
diff --git a/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S b/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
index b2cc368..e135076 100644
--- a/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001,2004,2005,2006,2009 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -18,6 +18,7 @@
#include <sysdep.h>
#include <jmpbuf-offsets.h>
#include <asm-syntax.h>
+#include <stap-probe.h>
.section .rodata.str1.1,"aMS",@progbits,1
@@ -78,7 +79,9 @@ ENTRY (____longjmp_chk)
cfi_adjust_cfa_offset(-12)
movl 4(%esp), %ecx
-.Lok: /* We add unwind information for the target here. */
+.Lok:
+ LIBC_PROBE (longjmp, 3, 4@%ecx, -4@8(%esp), 4@%edx)
+ /* We add unwind information for the target here. */
cfi_def_cfa(%ecx, 0)
cfi_register(%eip, %edx)
cfi_register(%esp, %edi)
@@ -101,5 +104,6 @@ ENTRY (____longjmp_chk)
cfi_restore(%ebp)
/* Jump to saved PC. */
+ LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%eax, 4@%edx)
jmp *%edx
END (____longjmp_chk)
diff --git a/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S b/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
index c392820..d9bdb67 100644
--- a/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
@@ -18,6 +18,7 @@
#include <sysdep.h>
#include <jmpbuf-offsets.h>
#include <asm-syntax.h>
+#include <stap-probe.h>
#include <sigaltstack-offsets.h>
@@ -103,7 +104,9 @@ ENTRY(____longjmp_chk)
movl %ebx, %esi
cfi_restore (%rsi)
-.Lok: /* We add unwind information for the target here. */
+.Lok:
+ LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
+ /* We add unwind information for the target here. */
cfi_def_cfa(%rdi, 0)
cfi_register(%rsp,%r8)
cfi_register(%rbp,%r9)
@@ -122,5 +125,7 @@ ENTRY(____longjmp_chk)
movl %esi, %eax
mov %R8_LP, %RSP_LP
movq %r9,%rbp
+ LIBC_PROBE (longjmp_target, 3,
+ LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
jmpq *%rdx
END (____longjmp_chk)
diff --git a/sysdeps/x86_64/__longjmp.S b/sysdeps/x86_64/__longjmp.S
index c0c15dc..ef1147a 100644
--- a/sysdeps/x86_64/__longjmp.S
+++ b/sysdeps/x86_64/__longjmp.S
@@ -18,6 +18,7 @@
#include <sysdep.h>
#include <jmpbuf-offsets.h>
#include <asm-syntax.h>
+#include <stap-probe.h>
/* Jump to the position specified by ENV, causing the
setjmp call there to return VAL, or 1 if VAL is 0.
@@ -41,6 +42,7 @@ ENTRY(__longjmp)
orq %rax, %r9
# endif
#endif
+ LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
/* We add unwind information for the target here. */
cfi_def_cfa(%rdi, 0)
cfi_register(%rsp,%r8)
@@ -60,5 +62,7 @@ ENTRY(__longjmp)
mov %esi, %eax
mov %R8_LP,%RSP_LP
movq %r9,%rbp
+ LIBC_PROBE (longjmp_target, 3,
+ LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
jmpq *%rdx
END (__longjmp)
diff --git a/sysdeps/x86_64/setjmp.S b/sysdeps/x86_64/setjmp.S
index 5639292..82ac731 100644
--- a/sysdeps/x86_64/setjmp.S
+++ b/sysdeps/x86_64/setjmp.S
@@ -19,6 +19,7 @@
#include <sysdep.h>
#include <jmpbuf-offsets.h>
#include <asm-syntax.h>
+#include <stap-probe.h>
ENTRY (__sigsetjmp)
/* Save registers. */
@@ -47,6 +48,7 @@ ENTRY (__sigsetjmp)
#endif
movq %rdx, (JB_RSP*8)(%rdi)
mov (%rsp), %RAX_LP /* Save PC we are returning to now. */
+ LIBC_PROBE (setjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RAX_LP)
#ifdef PTR_MANGLE
PTR_MANGLE (%RAX_LP)
#endif
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=3a097cc7a18309c864186c1b864b90889d2a45e9
commit 3a097cc7a18309c864186c1b864b90889d2a45e9
Author: Roland McGrath <roland@hack.frob.com>
Date: Fri May 25 13:40:20 2012 -0700
Add --enable-systemtap configuration to define static probe points.
diff --git a/ChangeLog b/ChangeLog
index 8ddc57e..e89af6f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2012-05-25 Roland McGrath <roland@hack.frob.com>
+
+ * include/stap-probe.h: New file.
+ * configure.in: Handle --enable-systemtap.
+ * configure: Regenerated.
+ * config.h.in (USE_STAP_PROBE): New #undef.
+ * extra-lib.mk (CPPFLAGS-$(lib)): Add -DIN_LIB=$(lib).
+ * elf/Makefile (CPPFLAGS-.os): Add -DIN_LIB=rtld.
+ * elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
+
2012-05-25 Joseph Myers <joseph@codesourcery.com>
[BZ #13717]
diff --git a/config.h.in b/config.h.in
index 5495260..dd184b0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -181,6 +181,10 @@
/* Define if obsolete RPC code should be made available for user-level code
to link against. */
#undef LINK_OBSOLETE_RPC
+
+/* Define if Systemtap <sys/sdt.h> probes should be defined. */
+#undef USE_STAP_PROBE
+
/*
*/
diff --git a/configure b/configure
index 09a0637..d730427 100755
--- a/configure
+++ b/configure
@@ -784,6 +784,7 @@ enable_all_warnings
enable_multi_arch
enable_nss_crypt
enable_obsolete_rpc
+enable_systemtap
with_cpu
'
ac_precious_vars='build_alias
@@ -1441,6 +1442,7 @@ Optional Features:
--enable-nss-crypt enable libcrypt to use nss
--enable-obsolete-rpc build and install the obsolete RPC code for
link-time usage
+ --enable-systemtap enable systemtap static probe points [default=no]
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
@@ -3753,6 +3755,7 @@ else
fi
+
# Check whether --enable-obsolete-rpc was given.
if test "${enable_obsolete_rpc+set}" = set; then :
enableval=$enable_obsolete_rpc; link_obsolete_rpc=$enableval
@@ -3767,6 +3770,51 @@ if test "$link_obsolete_rpc" = yes; then
fi
+# Check whether --enable-systemtap was given.
+if test "${enable_systemtap+set}" = set; then :
+ enableval=$enable_systemtap; systemtap=$enableval
+else
+ systemtap=no
+fi
+
+if test "x$systemtap" != xno; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for systemtap static probe support" >&5
+$as_echo_n "checking for systemtap static probe support... " >&6; }
+if ${libc_cv_sdt+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ old_CFLAGS="$CFLAGS"
+ CFLAGS="-std=gnu99 $CFLAGS"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/sdt.h>
+void foo (int i, void *p)
+{
+ asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) ""
+ :: STAP_PROBE_ASM_OPERANDS (2, i, p));
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ libc_cv_sdt=yes
+else
+ libc_cv_sdt=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CFLAGS="$old_CFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sdt" >&5
+$as_echo "$libc_cv_sdt" >&6; }
+ if test $libc_cv_sdt = yes; then
+ $as_echo "#define USE_STAP_PROBE 1" >>confdefs.h
+
+ elif test "x$systemtap" != xauto; then
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "systemtap support needs sys/sdt.h with asm support
+See \`config.log' for more details" "$LINENO" 5; }
+ fi
+fi
+
# The way shlib-versions is used to generate soversions.mk uses a
# fairly simplistic model for name recognition that can't distinguish
# i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
diff --git a/configure.in b/configure.in
index 38b55a6..1ae9ca4 100644
--- a/configure.in
+++ b/configure.in
@@ -252,6 +252,7 @@ else
fi
AC_SUBST(libc_cv_nss_crypt)
+
AC_ARG_ENABLE([obsolete-rpc],
AC_HELP_STRING([--enable-obsolete-rpc],
[build and install the obsolete RPC code for link-time usage]),
@@ -263,6 +264,29 @@ if test "$link_obsolete_rpc" = yes; then
AC_DEFINE(LINK_OBSOLETE_RPC)
fi
+AC_ARG_ENABLE([systemtap],
+ [AS_HELP_STRING([--enable-systemtap],
+ [enable systemtap static probe points @<:@default=no@:>@])],
+ [systemtap=$enableval],
+ [systemtap=no])
+if test "x$systemtap" != xno; then
+ AC_CACHE_CHECK([for systemtap static probe support], libc_cv_sdt, [dnl
+ old_CFLAGS="$CFLAGS"
+ CFLAGS="-std=gnu99 $CFLAGS"
+ AC_COMPILE_IFELSE([#include <sys/sdt.h>
+void foo (int i, void *p)
+{
+ asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) ""
+ :: STAP_PROBE_ASM_OPERANDS (2, i, p));
+}], [libc_cv_sdt=yes], [libc_cv_sdt=no])
+ CFLAGS="$old_CFLAGS"])
+ if test $libc_cv_sdt = yes; then
+ AC_DEFINE([USE_STAP_PROBE])
+ elif test "x$systemtap" != xauto; then
+ AC_MSG_FAILURE([systemtap support needs sys/sdt.h with asm support])
+ fi
+fi
+
# The way shlib-versions is used to generate soversions.mk uses a
# fairly simplistic model for name recognition that can't distinguish
# i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
diff --git a/elf/Makefile b/elf/Makefile
index f6c6fb4..0c26ce5 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -422,7 +422,8 @@ CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
CFLAGS-cache.c = $(SYSCONF-FLAGS)
CFLAGS-rtld.c = $(SYSCONF-FLAGS)
-CPPFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),-DNOT_IN_libc=1 -DIS_IN_rtld=1)
+CPPFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
+ -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld)
test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
generated += $(addsuffix .so,$(strip $(modules-names)))
diff --git a/elf/rtld-Rules b/elf/rtld-Rules
index 6526aec..1e03332 100644
--- a/elf/rtld-Rules
+++ b/elf/rtld-Rules
@@ -1,7 +1,6 @@
# Subroutine makefile for compiling libc modules linked into dynamic linker.
-# Copyright (C) 2002,2003,2005,2006,2008,2010,2011
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -130,6 +129,6 @@ ifdef rtld-depfiles
endif
# This here is the whole point of all the shenanigans.
-rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1
+rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld
endif
diff --git a/extra-lib.mk b/extra-lib.mk
index f2a19b0..a2293c5 100644
--- a/extra-lib.mk
+++ b/extra-lib.mk
@@ -101,4 +101,4 @@ ifneq (,$(cpp-srcs-left))
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
endif
-CPPFLAGS-$(lib) := -DNOT_IN_libc=1 -DIS_IN_$(lib)=1
+CPPFLAGS-$(lib) := -DNOT_IN_libc=1 -DIS_IN_$(lib)=1 -DIN_LIB=$(lib)
diff --git a/include/stap-probe.h b/include/stap-probe.h
new file mode 100644
index 0000000..1051ad1
--- /dev/null
+++ b/include/stap-probe.h
@@ -0,0 +1,80 @@
+/* Macros for defining Systemtap <sys/sdt.h> static probe points.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _STAP_PROBE_H
+#define _STAP_PROBE_H 1
+
+#ifdef USE_STAP_PROBE
+
+# include <sys/sdt.h>
+
+/* Our code uses one macro LIBC_PROBE (name, n, arg1, ..., argn).
+
+ Without USE_STAP_PROBE, that does nothing but evaluates all
+ its arguments (to prevent bit rot, unlike e.g. assert).
+
+ Systemtap's header defines the macros STAP_PROBE (provider, name) and
+ STAP_PROBEn (provider, name, arg1, ..., argn). For "provider" we paste
+ in the IN_LIB name (libc, libpthread, etc.) automagically. */
+
+# ifndef NOT_IN_libc
+# define IN_LIB libc
+# elif !defined IN_LIB
+/* This is intentionally defined with extra unquoted commas in it so
+ that macro substitution will bomb out when it is used. We don't
+ just use #error here, so that this header can be included by
+ other headers that use LIBC_PROBE inside their own macros. We
+ only want such headers to fail to compile if those macros are
+ actually used in a context where IN_LIB has not been defined. */
+# define IN_LIB ,,,missing -DIN_LIB=... -- not extra-lib.mk?,,,
+# endif
+
+# define LIBC_PROBE(name, n, ...) \
+ LIBC_PROBE_1 (IN_LIB, name, n, ## __VA_ARGS__)
+
+# define LIBC_PROBE_1(lib, name, n, ...) \
+ STAP_PROBE##n (lib, name, ## __VA_ARGS__)
+
+# define STAP_PROBE0 STAP_PROBE
+
+# define LIBC_PROBE_ASM(name, template) \
+ STAP_PROBE_ASM (IN_LIB, name, template)
+
+# define LIBC_PROBE_ASM_OPERANDS STAP_PROBE_ASM_OPERANDS
+
+#else /* Not USE_STAP_PROBE. */
+
+# ifndef __ASSEMBLER__
+/* Evaluate all the arguments and verify that N matches their number. */
+# define LIBC_PROBE(name, n, ...) \
+ do { \
+ _Bool __libc_probe_args[] = { 0, ## __VA_ARGS__ }; \
+ _Bool __libc_probe_verify_n[(sizeof __libc_probe_args / sizeof (_Bool)) \
+ == n + 1 ? 1 : -1]; \
+ (void) __libc_probe_verify_n; \
+ } while (0)
+# else
+# define LIBC_PROBE(name, n, ...) /* Nothing. */
+# endif
+
+# define LIBC_PROBE_ASM(name, template) /* Nothing. */
+# define LIBC_PROBE_ASM_OPERANDS(n, ...) /* Nothing. */
+
+#endif /* USE_STAP_PROBE. */
+
+#endif /* stap-probe.h */
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index efeebca..ade0b18 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,7 @@
+2012-05-24 Roland McGrath <roland@hack.frob.com>
+
+ * pthread_create.c (start_thread): Define pthread_start LIBC_PROBE.
+
2012-05-17 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/i386/i686/dl-sysdep.h
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c
index 3c1e479..c52ae11 100644
--- a/nptl/pthread_create.c
+++ b/nptl/pthread_create.c
@@ -31,6 +31,8 @@
#include <shlib-compat.h>
+#include <stap-probe.h>
+
/* Local function to start thread and handle cleanup. */
static int start_thread (void *arg);
@@ -299,6 +301,8 @@ start_thread (void *arg)
CANCEL_RESET (oldtype);
}
+ LIBC_PROBE (pthread_start, 3, (pthread_t) pd, pd->start_routine, pd->arg);
+
/* Run the code the user provided. */
#ifdef CALL_THREAD_FCT
THREAD_SETMEM (pd, result, CALL_THREAD_FCT (pd));
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 19 ++++
config.h.in | 4 +
configure | 48 +++++++++++
configure.in | 24 +++++
elf/Makefile | 3 +-
elf/rtld-Rules | 5 +-
extra-lib.mk | 2 +-
include/stap-probe.h | 80 ++++++++++++++++++
nptl/ChangeLog | 46 ++++++++++
nptl/DESIGN-systemtap-probes.txt | 89 ++++++++++++++++++++
nptl/pthread_cond_broadcast.c | 3 +
nptl/pthread_cond_destroy.c | 19 +++--
nptl/pthread_cond_init.c | 6 +-
nptl/pthread_cond_signal.c | 5 +-
nptl/pthread_cond_wait.c | 9 ++-
nptl/pthread_create.c | 8 ++-
nptl/pthread_join.c | 8 ++-
nptl/pthread_mutex_destroy.c | 6 +-
nptl/pthread_mutex_init.c | 7 +-
nptl/pthread_mutex_lock.c | 10 ++-
nptl/pthread_mutex_timedlock.c | 14 +++-
nptl/pthread_mutex_unlock.c | 10 ++-
nptl/pthread_rwlock_destroy.c | 5 +-
nptl/pthread_rwlock_rdlock.c | 7 ++-
nptl/pthread_rwlock_unlock.c | 5 +-
nptl/pthread_rwlock_wrlock.c | 7 ++-
.../unix/sysv/linux/i386/i486/lowlevellock.S | 7 +-
.../sysv/linux/i386/i486/pthread_cond_broadcast.S | 5 +-
.../sysv/linux/i386/i486/pthread_cond_signal.S | 6 +-
.../sysv/linux/i386/i486/pthread_cond_timedwait.S | 6 +-
.../unix/sysv/linux/i386/i486/pthread_cond_wait.S | 6 +-
.../sysv/linux/i386/i486/pthread_rwlock_rdlock.S | 5 +-
.../sysv/linux/i386/i486/pthread_rwlock_wrlock.S | 5 +-
nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h | 5 +-
nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S | 10 ++-
nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h | 8 +-
.../sysv/linux/x86_64/pthread_cond_broadcast.S | 7 +-
.../unix/sysv/linux/x86_64/pthread_cond_signal.S | 5 +-
.../sysv/linux/x86_64/pthread_cond_timedwait.S | 5 +-
.../unix/sysv/linux/x86_64/pthread_cond_wait.S | 27 ++++---
.../unix/sysv/linux/x86_64/pthread_rwlock_rdlock.S | 7 +-
.../unix/sysv/linux/x86_64/pthread_rwlock_wrlock.S | 7 +-
sysdeps/i386/__longjmp.S | 8 ++-
sysdeps/i386/bsd-_setjmp.S | 4 +-
sysdeps/i386/bsd-setjmp.S | 4 +-
sysdeps/i386/setjmp.S | 5 +-
sysdeps/unix/sysv/linux/i386/____longjmp_chk.S | 8 ++-
sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S | 7 ++-
sysdeps/x86_64/__longjmp.S | 4 +
sysdeps/x86_64/setjmp.S | 2 +
50 files changed, 533 insertions(+), 79 deletions(-)
create mode 100644 include/stap-probe.h
create mode 100644 nptl/DESIGN-systemtap-probes.txt
hooks/post-receive
--
GNU C Library master sources