diff options
Diffstat (limited to 'kernel/debug/kdb')
| -rw-r--r-- | kernel/debug/kdb/kdb_io.c | 9 |
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; } |