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Diffstat (limited to 'kernel/debug/kdb')
-rw-r--r--kernel/debug/kdb/kdb_io.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index daa76154fb1b..e74be38245ad 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -30,6 +30,7 @@
char kdb_prompt_str[CMD_BUFLEN];
int kdb_trap_printk;
+int kdb_printf_cpu = -1;
static int kgdb_transition_check(char *buffer)
{
@@ -554,24 +555,19 @@ int vkdb_printf(enum kdb_msgsrc src, const char *fmt, va_list ap)
int linecount;
int colcount;
int logging, saved_loglevel = 0;
- int saved_trap_printk;
int retlen = 0;
int fnd, len;
int this_cpu, old_cpu;
- static int kdb_printf_cpu = -1;
char *cp, *cp2, *cphold = NULL, replaced_byte = ' ';
char *moreprompt = "more> ";
struct console *c = console_drivers;
unsigned long uninitialized_var(flags);
- local_irq_save(flags);
- saved_trap_printk = kdb_trap_printk;
- kdb_trap_printk = 0;
-
/* Serialize kdb_printf if multiple cpus try to write at once.
* But if any cpu goes recursive in kdb, just print the output,
* even if it is interleaved with any other text.
*/
+ local_irq_save(flags);
this_cpu = smp_processor_id();
for (;;) {
old_cpu = cmpxchg(&kdb_printf_cpu, -1, this_cpu);
@@ -849,7 +845,6 @@ kdb_print_out:
console_loglevel = saved_loglevel;
/* kdb_printf_cpu locked the code above. */
smp_store_release(&kdb_printf_cpu, old_cpu);
- kdb_trap_printk = saved_trap_printk;
local_irq_restore(flags);
return retlen;
}