trace_selftest.c (05bd68c514579e007b46e4fa0461b78416a3f4c2) trace_selftest.c (4e491d14f2506b218d678935c25a7027b79178b1)
1/* Include in trace.c */
2
3#include <linux/kthread.h>
4#include <linux/delay.h>
5
6static inline int trace_valid_entry(struct trace_entry *entry)
7{
8 switch (entry->type) {

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118int trace_selftest_startup_dynamic_tracing(struct tracer *trace,
119 struct trace_array *tr,
120 int (*func)(void))
121{
122 unsigned long count;
123 int ret;
124 int save_ftrace_enabled = ftrace_enabled;
125 int save_tracer_enabled = tracer_enabled;
1/* Include in trace.c */
2
3#include <linux/kthread.h>
4#include <linux/delay.h>
5
6static inline int trace_valid_entry(struct trace_entry *entry)
7{
8 switch (entry->type) {

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118int trace_selftest_startup_dynamic_tracing(struct tracer *trace,
119 struct trace_array *tr,
120 int (*func)(void))
121{
122 unsigned long count;
123 int ret;
124 int save_ftrace_enabled = ftrace_enabled;
125 int save_tracer_enabled = tracer_enabled;
126 char *func_name;
126
127 /* The ftrace test PASSED */
128 printk(KERN_CONT "PASSED\n");
129 pr_info("Testing dynamic ftrace: ");
130
131 /* enable tracing, and record the filter function */
132 ftrace_enabled = 1;
133 tracer_enabled = 1;
134
135 /* passed in by parameter to fool gcc from optimizing */
136 func();
137
138 /* update the records */
139 ret = ftrace_force_update();
140 if (ret) {
141 printk(KERN_CONT ".. ftraced failed .. ");
142 return ret;
143 }
144
127
128 /* The ftrace test PASSED */
129 printk(KERN_CONT "PASSED\n");
130 pr_info("Testing dynamic ftrace: ");
131
132 /* enable tracing, and record the filter function */
133 ftrace_enabled = 1;
134 tracer_enabled = 1;
135
136 /* passed in by parameter to fool gcc from optimizing */
137 func();
138
139 /* update the records */
140 ret = ftrace_force_update();
141 if (ret) {
142 printk(KERN_CONT ".. ftraced failed .. ");
143 return ret;
144 }
145
146 /*
147 * Some archs *cough*PowerPC*cough* add charachters to the
148 * start of the function names. We simply put a '*' to
149 * accomodate them.
150 */
151 func_name = "*" STR(DYN_FTRACE_TEST_NAME);
152
145 /* filter only on our function */
153 /* filter only on our function */
146 ftrace_set_filter(STR(DYN_FTRACE_TEST_NAME),
147 sizeof(STR(DYN_FTRACE_TEST_NAME)), 1);
154 ftrace_set_filter(func_name, strlen(func_name), 1);
148
149 /* enable tracing */
150 tr->ctrl = 1;
151 trace->init(tr);
152 /* Sleep for a 1/10 of a second */
153 msleep(100);
154
155 /* we should have nothing in the buffer */

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156 /* enable tracing */
157 tr->ctrl = 1;
158 trace->init(tr);
159 /* Sleep for a 1/10 of a second */
160 msleep(100);
161
162 /* we should have nothing in the buffer */

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