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authorRoland McGrath <roland@hack.frob.com>2012-05-25 13:35:08 -0700
committerRoland McGrath <roland@hack.frob.com>2012-05-25 13:41:03 -0700
commit5acf7263d52992ce4144e0a3b3644985b9e792b4 (patch)
treec128be190c1c3fb5a1987710033c016d5b881b70 /nptl/pthread_rwlock_rdlock.c
parent8422c9a560e6e3c854739c8a13ecb1c6714f930f (diff)
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Add systemtap static probe points in generic and x86_64 pthread code.
Diffstat (limited to 'nptl/pthread_rwlock_rdlock.c')
-rw-r--r--nptl/pthread_rwlock_rdlock.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/nptl/pthread_rwlock_rdlock.c b/nptl/pthread_rwlock_rdlock.c
index 4aa1c5bb59..14688e2981 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;
 	}