kcov: properly check if we are in an interrupt

[cascardo/linux.git] / kernel / test_kprobes.c

diff --git a/kernel/test_kprobes.c b/kernel/test_kprobes.c
index 12d6ebb..0dbab6d 100644 (file)
--- a/kernel/test_kprobes.c
+++ b/kernel/test_kprobes.c
@@ -14,6 +14,8 @@
  * the GNU General Public License for more details.
  */
 
+#define pr_fmt(fmt) "Kprobe smoke test: " fmt
+
 #include <linux/kernel.h>
 #include <linux/kprobes.h>
 #include <linux/random.h>
@@ -41,8 +43,7 @@ static void kp_post_handler(struct kprobe *p, struct pt_regs *regs,
 {
        if (preh_val != (rand1 / div_factor)) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "incorrect value in post_handler\n");
+               pr_err("incorrect value in post_handler\n");
        }
        posth_val = preh_val + div_factor;
 }
@@ -59,8 +60,7 @@ static int test_kprobe(void)
 
        ret = register_kprobe(&kp);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_kprobe returned %d\n", ret);
+               pr_err("register_kprobe returned %d\n", ret);
                return ret;
        }
 
@@ -68,14 +68,12 @@ static int test_kprobe(void)
        unregister_kprobe(&kp);
 
        if (preh_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe pre_handler not called\n");
+               pr_err("kprobe pre_handler not called\n");
                handler_errors++;
        }
 
        if (posth_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe post_handler not called\n");
+               pr_err("kprobe post_handler not called\n");
                handler_errors++;
        }
 
@@ -98,8 +96,7 @@ static void kp_post_handler2(struct kprobe *p, struct pt_regs *regs,
 {
        if (preh_val != (rand1 / div_factor) + 1) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "incorrect value in post_handler2\n");
+               pr_err("incorrect value in post_handler2\n");
        }
        posth_val = preh_val + div_factor;
 }
@@ -120,8 +117,7 @@ static int test_kprobes(void)
        kp.flags = 0;
        ret = register_kprobes(kps, 2);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_kprobes returned %d\n", ret);
+               pr_err("register_kprobes returned %d\n", ret);
                return ret;
        }
 
@@ -130,14 +126,12 @@ static int test_kprobes(void)
        ret = target(rand1);
 
        if (preh_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe pre_handler not called\n");
+               pr_err("kprobe pre_handler not called\n");
                handler_errors++;
        }
 
        if (posth_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe post_handler not called\n");
+               pr_err("kprobe post_handler not called\n");
                handler_errors++;
        }
 
@@ -146,14 +140,12 @@ static int test_kprobes(void)
        ret = target2(rand1);
 
        if (preh_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe pre_handler2 not called\n");
+               pr_err("kprobe pre_handler2 not called\n");
                handler_errors++;
        }
 
        if (posth_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kprobe post_handler2 not called\n");
+               pr_err("kprobe post_handler2 not called\n");
                handler_errors++;
        }
 
@@ -166,8 +158,7 @@ static u32 j_kprobe_target(u32 value)
 {
        if (value != rand1) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "incorrect value in jprobe handler\n");
+               pr_err("incorrect value in jprobe handler\n");
        }
 
        jph_val = rand1;
@@ -186,16 +177,14 @@ static int test_jprobe(void)
 
        ret = register_jprobe(&jp);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_jprobe returned %d\n", ret);
+               pr_err("register_jprobe returned %d\n", ret);
                return ret;
        }
 
        ret = target(rand1);
        unregister_jprobe(&jp);
        if (jph_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "jprobe handler not called\n");
+               pr_err("jprobe handler not called\n");
                handler_errors++;
        }
 
@@ -217,24 +206,21 @@ static int test_jprobes(void)
        jp.kp.flags = 0;
        ret = register_jprobes(jps, 2);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_jprobes returned %d\n", ret);
+               pr_err("register_jprobes returned %d\n", ret);
                return ret;
        }
 
        jph_val = 0;
        ret = target(rand1);
        if (jph_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "jprobe handler not called\n");
+               pr_err("jprobe handler not called\n");
                handler_errors++;
        }
 
        jph_val = 0;
        ret = target2(rand1);
        if (jph_val == 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "jprobe handler2 not called\n");
+               pr_err("jprobe handler2 not called\n");
                handler_errors++;
        }
        unregister_jprobes(jps, 2);
@@ -256,13 +242,11 @@ static int return_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
 
        if (ret != (rand1 / div_factor)) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "incorrect value in kretprobe handler\n");
+               pr_err("incorrect value in kretprobe handler\n");
        }
        if (krph_val == 0) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "call to kretprobe entry handler failed\n");
+               pr_err("call to kretprobe entry handler failed\n");
        }
 
        krph_val = rand1;
@@ -281,16 +265,14 @@ static int test_kretprobe(void)
 
        ret = register_kretprobe(&rp);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_kretprobe returned %d\n", ret);
+               pr_err("register_kretprobe returned %d\n", ret);
                return ret;
        }
 
        ret = target(rand1);
        unregister_kretprobe(&rp);
        if (krph_val != rand1) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kretprobe handler not called\n");
+               pr_err("kretprobe handler not called\n");
                handler_errors++;
        }
 
@@ -303,13 +285,11 @@ static int return_handler2(struct kretprobe_instance *ri, struct pt_regs *regs)
 
        if (ret != (rand1 / div_factor) + 1) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "incorrect value in kretprobe handler2\n");
+               pr_err("incorrect value in kretprobe handler2\n");
        }
        if (krph_val == 0) {
                handler_errors++;
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "call to kretprobe entry handler failed\n");
+               pr_err("call to kretprobe entry handler failed\n");
        }
 
        krph_val = rand1;
@@ -332,24 +312,21 @@ static int test_kretprobes(void)
        rp.kp.flags = 0;
        ret = register_kretprobes(rps, 2);
        if (ret < 0) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "register_kretprobe returned %d\n", ret);
+               pr_err("register_kretprobe returned %d\n", ret);
                return ret;
        }
 
        krph_val = 0;
        ret = target(rand1);
        if (krph_val != rand1) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kretprobe handler not called\n");
+               pr_err("kretprobe handler not called\n");
                handler_errors++;
        }
 
        krph_val = 0;
        ret = target2(rand1);
        if (krph_val != rand1) {
-               printk(KERN_ERR "Kprobe smoke test failed: "
-                               "kretprobe handler2 not called\n");
+               pr_err("kretprobe handler2 not called\n");
                handler_errors++;
        }
        unregister_kretprobes(rps, 2);
@@ -368,7 +345,7 @@ int init_test_probes(void)
                rand1 = prandom_u32();
        } while (rand1 <= div_factor);
 
-       printk(KERN_INFO "Kprobe smoke test started\n");
+       pr_info("started\n");
        num_tests++;
        ret = test_kprobe();
        if (ret < 0)
@@ -402,13 +379,11 @@ int init_test_probes(void)
 #endif /* CONFIG_KRETPROBES */
 
        if (errors)
-               printk(KERN_ERR "BUG: Kprobe smoke test: %d out of "
-                               "%d tests failed\n", errors, num_tests);
+               pr_err("BUG: %d out of %d tests failed\n", errors, num_tests);
        else if (handler_errors)
-               printk(KERN_ERR "BUG: Kprobe smoke test: %d error(s) "
-                               "running handlers\n", handler_errors);
+               pr_err("BUG: %d error(s) running handlers\n", handler_errors);
        else
-               printk(KERN_INFO "Kprobe smoke test passed successfully\n");
+               pr_info("passed successfully\n");
 
        return 0;
 }