diff options
| author | Roland McGrath <roland@hack.frob.com> | 2012-05-25 13:35:08 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2012-05-25 13:41:03 -0700 |
| commit | 5acf7263d52992ce4144e0a3b3644985b9e792b4 (patch) | |
| tree | c128be190c1c3fb5a1987710033c016d5b881b70 /nptl/pthread_rwlock_rdlock.c | |
| parent | 8422c9a560e6e3c854739c8a13ecb1c6714f930f (diff) | |
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.c | 7 |
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; } |