rmmod test-mark-speed-edit
RESNOP=`dmesg |tail -n 10 |sed 's/^\[.*\] //'| sed 's/cycles : \(.*\)$/\1/'`
+insmod test-mark-speed-local.ko
+#Patch with nops
+cat /proc/testmark
+
+for a in `seq 1 $ITER`; do cat /proc/testmark;done
+rmmod test-mark-speed-local
+RESNOPLOCAL=`dmesg |tail -n 10 |sed 's/^\[.*\] //'| sed 's/cycles : \(.*\)$/\1/'`
+
make clean
make EXTRA_CFLAGS=-DCACHEFLUSH
rmmod test-mark-speed-edit
RESNOPFL=`dmesg |tail -n 10 |sed 's/^\[.*\] //'| sed 's/cycles : \(.*\)$/\1/'`
+insmod test-mark-speed-local.ko
+#Patch with nops
+cat /proc/testmark
+
+for a in `seq 1 $ITER`; do cat /proc/testmark;done
+rmmod test-mark-speed-local
+RESNOPLOCALFL=`dmesg |tail -n 10 |sed 's/^\[.*\] //'| sed 's/cycles : \(.*\)$/\1/'`
+
echo $RESOPTFL
-echo "Added cycles for NOP replacement of function call (cached)"
+echo "Added cycles for NOP replacement of function call (cached) (1 pointer read, 5 local vars)"
SUM="0"
for a in $RESNOP; do SUM=$[$SUM + $a]; done
RESNOP=`echo $SUM/$ITER/$LOOPS - $RESEMP | bc -l /dev/stdin`
echo $RESNOP
-echo "Added cycles for NOP replacement of function call (uncached)"
+echo "Added cycles for NOP replacement of function call (uncached) (1 pointer read, 5 local vars)"
SUM="0"
for a in $RESNOPFL; do SUM=$[$SUM + $a]; done
RESNOPFL=`echo $SUM/$ITER/$LOOPS - $RESEMPFL | bc -l /dev/stdin`
echo $RESNOPFL
+echo "Added cycles for NOP replacement of function call (cached) (6 local vars)"
+SUM="0"
+for a in $RESNOPLOCAL; do SUM=$[$SUM + $a]; done
+RESNOPLOCAL=`echo $SUM/$ITER/$LOOPS - $RESEMP | bc -l /dev/stdin`
+echo $RESNOPLOCAL
+
+echo "Added cycles for NOP replacement of function call (uncached) (6 local vars)"
+SUM="0"
+for a in $RESNOPLOCALFL; do SUM=$[$SUM + $a]; done
+RESNOPLOCALFL=`echo $SUM/$ITER/$LOOPS - $RESEMPFL | bc -l /dev/stdin`
+echo $RESNOPLOCALFL
--- /dev/null
+/* test-mark.c
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/timex.h>
+#include <linux/marker.h>
+#include <asm/ptrace.h>
+#include <asm/system.h>
+
+static void noinline test2(const struct marker *mdata,
+ void *call_private, ...)
+{
+ unsigned char *ins = __builtin_return_address(0) - 5;
+#if 0
+ /* not called */
+ printk("ip %p\n", __builtin_return_address(0));
+ printk("prev_ins %hX %hX %hX %hX %hX\n",
+ ins[0], ins[1], ins[2], ins[3], ins[4]);
+#endif //0
+ ins[0] = 0x90;
+ ins[1] = 0x8d;
+ ins[2] = 0x74;
+ ins[3] = 0x26;
+ ins[4] = 0x00;
+}
+
+/*
+ * Generic marker flavor always available.
+ * Note : the empty asm volatile with read constraint is used here instead of a
+ * "used" attribute to fix a gcc 4.1.x bug.
+ * Make sure the alignment of the structure in the __markers section will
+ * not add unwanted padding between the beginning of the section and the
+ * structure. Force alignment to the same alignment as the section start.
+ */
+#define __my_trace_mark(generic, name, call_private, format, args...) \
+ do { \
+ static const char __mstrtab_##name[] \
+ __attribute__((section("__markers_strings"))) \
+ = #name "\0" format; \
+ static struct marker __mark_##name \
+ __attribute__((section("__markers"), aligned(8))) = \
+ { __mstrtab_##name, &__mstrtab_##name[sizeof(#name)], \
+ 0, 0, marker_probe_cb, \
+ { __mark_empty_function, NULL}, NULL }; \
+ __mark_check_format(format, ## args); \
+ if (!generic) { \
+ if (unlikely(imv_read(__mark_##name.state))) \
+ test2 \
+ (&__mark_##name, call_private, \
+ ## args); \
+ } else { \
+ if (unlikely(_imv_read(__mark_##name.state))) \
+ test2 \
+ (&__mark_##name, call_private, \
+ ## args); \
+ } \
+ } while (0)
+
+ //asm volatile ("");
+struct proc_dir_entry *pentry = NULL;
+
+static inline void test(unsigned long arg, unsigned long arg2)
+{
+#ifdef CACHEFLUSH
+ wbinvd();
+#endif
+ //asm volatile ("");
+ //__my_trace_mark(1, kernel_debug_test, NULL, "%d %d %ld %ld", 2, current->pid, arg, arg2);
+ test2(NULL, NULL, 2, 10, arg, arg2);
+ //__my_trace_mark(0, kernel_debug_test, NULL, "%d %d %ld %ld", 2, current->pid, arg, arg2);
+}
+
+static int my_open(struct inode *inode, struct file *file)
+{
+ unsigned int i;
+ cycles_t cycles1, cycles2;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ rdtsc_barrier();
+ cycles1 = get_cycles();
+ rdtsc_barrier();
+ for(i=0; i<2000; i++) {
+ test(i, i);
+ }
+ rdtsc_barrier();
+ cycles2 = get_cycles();
+ rdtsc_barrier();
+ local_irq_restore(flags);
+ printk("cycles : %llu\n", cycles2-cycles1);
+ return -EPERM;
+}
+
+
+static struct file_operations my_operations = {
+ .open = my_open,
+};
+
+int init_module(void)
+{
+ pentry = create_proc_entry("testmark", 0444, NULL);
+ if (pentry)
+ pentry->proc_fops = &my_operations;
+
+ return 0;
+}
+
+void cleanup_module(void)
+{
+ remove_proc_entry("testmark", NULL);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("Marker Test");
+MODULE_VERSION("1.0");
+
projects / lttv.git / commitdiff
