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-rw-r--r--drivers/misc/kgdbts.c41
-rw-r--r--lib/Kconfig.kgdb18
2 files changed, 42 insertions, 17 deletions
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index cbc4822b5847..6d6286c4eeac 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -112,6 +112,10 @@
printk(KERN_INFO a); \
touch_nmi_watchdog(); \
} while (0)
+#define eprintk(a...) do { \
+ printk(KERN_ERR a); \
+ WARN_ON(1); \
+ } while (0)
#define MAX_CONFIG_LEN 40
static const char hexchars[] = "0123456789abcdef";
@@ -145,7 +149,11 @@ static struct pt_regs kgdbts_regs;
/* -1 = init not run yet, 0 = unconfigured, 1 = configured. */
static int configured = -1;
+#ifdef CONFIG_KGDB_TESTS_BOOT_STRING
+static char config[MAX_CONFIG_LEN] = CONFIG_KGDB_TESTS_BOOT_STRING;
+#else
static char config[MAX_CONFIG_LEN];
+#endif
static struct kparam_string kps = {
.string = config,
.maxlen = MAX_CONFIG_LEN,
@@ -289,7 +297,7 @@ static int check_and_rewind_pc(char *put_str, char *arg)
#endif
if (strcmp(arg, "silent") &&
instruction_pointer(&kgdbts_regs) + offset != addr) {
- printk(KERN_ERR "kgdbts: BP mismatch %lx expected %lx\n",
+ eprintk("kgdbts: BP mismatch %lx expected %lx\n",
instruction_pointer(&kgdbts_regs) + offset, addr);
return 1;
}
@@ -313,7 +321,7 @@ static int check_single_step(char *put_str, char *arg)
v2printk("Singlestep stopped at IP: %lx\n",
instruction_pointer(&kgdbts_regs));
if (instruction_pointer(&kgdbts_regs) == addr) {
- printk(KERN_ERR "kgdbts: SingleStep failed at %lx\n",
+ eprintk("kgdbts: SingleStep failed at %lx\n",
instruction_pointer(&kgdbts_regs));
return 1;
}
@@ -378,7 +386,7 @@ static void emul_sstep_get(char *arg)
break_helper("z0", 0, sstep_addr);
break;
default:
- printk(KERN_ERR "kgdbts: ERROR failed sstep get emulation\n");
+ eprintk("kgdbts: ERROR failed sstep get emulation\n");
}
sstep_state++;
}
@@ -404,26 +412,26 @@ static int emul_sstep_put(char *put_str, char *arg)
break;
case 2:
if (strncmp(put_str, "$OK", 3)) {
- printk(KERN_ERR "kgdbts: failed sstep break set\n");
+ eprintk("kgdbts: failed sstep break set\n");
return 1;
}
break;
case 3:
if (strncmp(put_str, "$T0", 3)) {
- printk(KERN_ERR "kgdbts: failed continue sstep\n");
+ eprintk("kgdbts: failed continue sstep\n");
return 1;
}
break;
case 4:
if (strncmp(put_str, "$OK", 3)) {
- printk(KERN_ERR "kgdbts: failed sstep break unset\n");
+ eprintk("kgdbts: failed sstep break unset\n");
return 1;
}
/* Single step is complete so continue on! */
sstep_state = 0;
return 0;
default:
- printk(KERN_ERR "kgdbts: ERROR failed sstep put emulation\n");
+ eprintk("kgdbts: ERROR failed sstep put emulation\n");
}
/* Continue on the same test line until emulation is complete */
@@ -668,8 +676,7 @@ static int run_simple_test(int is_get_char, int chr)
}
if (get_buf[get_buf_cnt] == '\0') {
- printk(KERN_ERR
- "kgdbts: ERROR GET: end of buffer on '%s' at %i\n",
+ eprintk("kgdbts: ERROR GET: EOB on '%s' at %i\n",
ts.name, ts.idx);
get_buf_cnt = 0;
fill_get_buf("D");
@@ -684,13 +691,13 @@ static int run_simple_test(int is_get_char, int chr)
*/
if (ts.tst[ts.idx].get[0] == '\0' &&
ts.tst[ts.idx].put[0] == '\0') {
- printk(KERN_ERR "kgdbts: ERROR: beyond end of test on"
+ eprintk("kgdbts: ERROR: beyond end of test on"
" '%s' line %i\n", ts.name, ts.idx);
return 0;
}
if (put_buf_cnt >= BUFMAX) {
- printk(KERN_ERR "kgdbts: ERROR: put buffer overflow on"
+ eprintk("kgdbts: ERROR: put buffer overflow on"
" '%s' line %i\n", ts.name, ts.idx);
put_buf_cnt = 0;
return 0;
@@ -708,7 +715,7 @@ static int run_simple_test(int is_get_char, int chr)
v2printk("put%i: %s\n", ts.idx, put_buf);
/* Trigger check here */
if (ts.validate_put && ts.validate_put(put_buf)) {
- printk(KERN_ERR "kgdbts: ERROR PUT: end of test "
+ eprintk("kgdbts: ERROR PUT: end of test "
"buffer on '%s' line %i expected %s got %s\n",
ts.name, ts.idx, ts.tst[ts.idx].put, put_buf);
}
@@ -772,7 +779,7 @@ static void run_breakpoint_test(int is_hw_breakpoint)
if (test_complete)
return;
- printk(KERN_ERR "kgdbts: ERROR %s test failed\n", ts.name);
+ eprintk("kgdbts: ERROR %s test failed\n", ts.name);
}
static void run_hw_break_test(int is_write_test)
@@ -791,7 +798,7 @@ static void run_hw_break_test(int is_write_test)
hw_break_val_access();
if (is_write_test) {
if (test_complete == 2)
- printk(KERN_ERR "kgdbts: ERROR %s broke on access\n",
+ eprintk("kgdbts: ERROR %s broke on access\n",
ts.name);
hw_break_val_write();
}
@@ -800,7 +807,7 @@ static void run_hw_break_test(int is_write_test)
if (test_complete == 1)
return;
- printk(KERN_ERR "kgdbts: ERROR %s test failed\n", ts.name);
+ eprintk("kgdbts: ERROR %s test failed\n", ts.name);
}
static void run_nmi_sleep_test(int nmi_sleep)
@@ -817,12 +824,12 @@ static void run_nmi_sleep_test(int nmi_sleep)
touch_nmi_watchdog();
local_irq_restore(flags);
if (test_complete != 2)
- printk(KERN_ERR "kgdbts: ERROR nmi_test did not hit nmi\n");
+ eprintk("kgdbts: ERROR nmi_test did not hit nmi\n");
kgdb_breakpoint();
if (test_complete == 1)
return;
- printk(KERN_ERR "kgdbts: ERROR %s test failed\n", ts.name);
+ eprintk("kgdbts: ERROR %s test failed\n", ts.name);
}
static void run_bad_read_test(void)
diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb
index aaabcddcda5a..f2e01ac5ab09 100644
--- a/lib/Kconfig.kgdb
+++ b/lib/Kconfig.kgdb
@@ -38,3 +38,21 @@ config KGDB_TESTS
See the drivers/misc/kgdbts.c for the details about
the tests. The most basic of this I/O module is to boot
a kernel boot arguments "kgdbwait kgdbts=V1F100"
+
+config KGDB_TESTS_ON_BOOT
+ bool "KGDB: Run tests on boot"
+ depends on KGDB_TESTS
+ default n
+ help
+ Run the kgdb tests on boot up automatically without the need
+ to pass in a kernel parameter
+
+config KGDB_TESTS_BOOT_STRING
+ string "KGDB: which internal kgdb tests to run"
+ depends on KGDB_TESTS_ON_BOOT
+ default "V1F100"
+ help
+ This is the command string to send the kgdb test suite on
+ boot. See the drivers/misc/kgdbts.c for detailed
+ information about other strings you could use beyond the
+ default of V1F100.