From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Sat, 13 Jun 2009 23:18:38 +0000 (-0400)
Subject: Other timing tests, update cache line size
X-Git-Tag: v0.1~147
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b430c6d447b85bc1412b0d2b4bdffb3e7573468a;p=userspace-rcu.git

Other timing tests, update cache line size

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---

diff --git a/test_perthreadlock_timing.c b/test_perthreadlock_timing.c
index 625f999..3e8268b 100644
--- a/test_perthreadlock_timing.c
+++ b/test_perthreadlock_timing.c
@@ -33,6 +33,9 @@
 #include <pthread.h>
 #include <arch.h>
 
+/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
+#define CACHE_LINE_SIZE 4096
+
 #if defined(_syscall0)
 _syscall0(pid_t, gettid)
 #elif defined(__NR_gettid)
@@ -58,7 +61,7 @@ static struct test_array test_array = { 8 };
 
 struct per_thread_lock {
 	pthread_mutex_t lock;
-} __attribute__((aligned(128)));	/* cache-line aligned */
+} __attribute__((aligned(CACHE_LINE_SIZE)));	/* cache-line aligned */
 
 static struct per_thread_lock *per_thread_lock;
 
@@ -76,8 +79,8 @@ static int num_write;
 #define NR_READ num_read
 #define NR_WRITE num_write
 
-static cycles_t __attribute__((aligned(128))) *reader_time;
-static cycles_t __attribute__((aligned(128))) *writer_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *reader_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *writer_time;
 
 void *thr_reader(void *arg)
 {
diff --git a/test_qsbr_timing.c b/test_qsbr_timing.c
index e296ced..e46a435 100644
--- a/test_qsbr_timing.c
+++ b/test_qsbr_timing.c
@@ -32,6 +32,9 @@
 #include <sys/syscall.h>
 #include <arch.h>
 
+/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
+#define CACHE_LINE_SIZE 4096
+
 #if defined(_syscall0)
 _syscall0(pid_t, gettid)
 #elif defined(__NR_gettid)
@@ -93,8 +96,8 @@ static int num_write;
 #define NR_READ num_read
 #define NR_WRITE num_write
 
-static cycles_t __attribute__((aligned(128))) *reader_time;
-static cycles_t __attribute__((aligned(128))) *writer_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *reader_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *writer_time;
 
 void *thr_reader(void *arg)
 {
diff --git a/test_rwlock_timing.c b/test_rwlock_timing.c
index cd20876..4884e4d 100644
--- a/test_rwlock_timing.c
+++ b/test_rwlock_timing.c
@@ -33,6 +33,9 @@
 #include <pthread.h>
 #include <arch.h>
 
+/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
+#define CACHE_LINE_SIZE 4096
+
 #if defined(_syscall0)
 _syscall0(pid_t, gettid)
 #elif defined(__NR_gettid)
@@ -72,8 +75,8 @@ static int num_write;
 #define NR_READ num_read
 #define NR_WRITE num_write
 
-static cycles_t __attribute__((aligned(128))) *reader_time;
-static cycles_t __attribute__((aligned(128))) *writer_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *reader_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *writer_time;
 
 void *thr_reader(void *arg)
 {
diff --git a/test_urcu_timing.c b/test_urcu_timing.c
index 5f75bae..8577b8f 100644
--- a/test_urcu_timing.c
+++ b/test_urcu_timing.c
@@ -32,6 +32,9 @@
 #include <sys/syscall.h>
 #include <arch.h>
 
+/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
+#define CACHE_LINE_SIZE 4096
+
 #if defined(_syscall0)
 _syscall0(pid_t, gettid)
 #elif defined(__NR_gettid)
@@ -93,8 +96,8 @@ static int num_write;
 #define NR_READ num_read
 #define NR_WRITE num_write
 
-static cycles_t __attribute__((aligned(128))) *reader_time;
-static cycles_t __attribute__((aligned(128))) *writer_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *reader_time;
+static cycles_t __attribute__((aligned(CACHE_LINE_SIZE))) *writer_time;
 
 void *thr_reader(void *arg)
 {