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64 bits
[lttv.git]
/
markers-test
/
test-mark-speed.c
diff --git
a/markers-test/test-mark-speed.c
b/markers-test/test-mark-speed.c
index a4c2675bf0b283ba5bd5b888575915fb166e7764..015ce4997f7c7cab9b52c014bdaa225dcc23dd3e 100644
(file)
--- a/
markers-test/test-mark-speed.c
+++ b/
markers-test/test-mark-speed.c
@@
-11,7
+11,8
@@
#include <asm/system.h>
static void pmc_flush_cache(void)
#include <asm/system.h>
static void pmc_flush_cache(void)
- {
+{
+ register int i;
/* write back and invalidate cache (a serializing instruction) */
__asm__ __volatile__ ( "wbinvd" : : : "memory" );
/* write back and invalidate cache (a serializing instruction) */
__asm__ __volatile__ ( "wbinvd" : : : "memory" );
@@
-26,8
+27,10
@@
static void pmc_flush_cache(void)
* Does wbinvd also cause the TLB to be flushed?
* A comment in mtrr.c suggests that it does.
*/
* Does wbinvd also cause the TLB to be flushed?
* A comment in mtrr.c suggests that it does.
*/
- { register int i; for (i = 0; i < 512*1024; i++) { } }
- }
+ for (i = 0; i < 512*1024; i++) {
+ cpu_relax();
+ }
+}
static void noinline test2(const struct marker *mdata,
void *call_private, ...)
static void noinline test2(const struct marker *mdata,
void *call_private, ...)
@@
-36,6
+39,12
@@
static void noinline test2(const struct marker *mdata,
printk("blah\n");
}
printk("blah\n");
}
+#ifdef CACHEFLUSH
+#define myclflush(a) clflush(a)
+#else
+#define myclflush(a)
+#endif \
+
/*
* Generic marker flavor always available.
* Note : the empty asm volatile with read constraint is used here instead of a
/*
* Generic marker flavor always available.
* Note : the empty asm volatile with read constraint is used here instead of a
@@
-61,6
+70,7
@@
static void noinline test2(const struct marker *mdata,
(&__mark_##name, call_private, \
## args); \
} else { \
(&__mark_##name, call_private, \
## args); \
} else { \
+ myclflush(&_imv_read(__mark_##name.state)); \
if (unlikely(_imv_read(__mark_##name.state))) \
test2 \
(&__mark_##name, call_private, \
if (unlikely(_imv_read(__mark_##name.state))) \
test2 \
(&__mark_##name, call_private, \
@@
-73,10
+83,7
@@
struct proc_dir_entry *pentry = NULL;
static inline void test(unsigned long arg, unsigned long arg2)
{
static inline void test(unsigned long arg, unsigned long arg2)
{
- int temp[5];
-#ifdef CACHEFLUSH
- pmc_flush_cache();
-#endif
+ volatile int temp[5];
temp[2] = (temp[0] + 60) << 10;
temp[3] = (temp[2] + 60) << 10;
temp[4] = (temp[3] + 60) << 10;
temp[2] = (temp[0] + 60) << 10;
temp[3] = (temp[2] + 60) << 10;
temp[4] = (temp[3] + 60) << 10;
@@
-96,8
+103,8
@@
static int my_open(struct inode *inode, struct file *file)
local_irq_save(flags);
#ifdef CACHEFLUSH
local_irq_save(flags);
#ifdef CACHEFLUSH
-
pmc_flush_cache();
/* initial write back, without cycle count */
-
msleep(20);
/* wait for L2 flush */
+
//pmc_flush_cache();
/* initial write back, without cycle count */
+
//msleep(20);
/* wait for L2 flush */
#endif
rdtsc_barrier();
cycles1 = get_cycles();
#endif
rdtsc_barrier();
cycles1 = get_cycles();
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