It's reasonable to call __ftrace_dump function not only once, so remove the dump_ran variable checking.
Signed-off-by: zhangwei(Jovi) <[email protected]> --- kernel/trace/trace.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 090eddb..4cec7b8 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5106,17 +5106,12 @@ __ftrace_dump(bool disable_tracing, enum ftrace_dump_mode oops_dump_mode) /* use static because iter can be a bit big for the stack */ static struct trace_iterator iter; unsigned int old_userobj; - static int dump_ran; unsigned long flags; int cnt = 0, cpu; /* only one dump */ local_irq_save(flags); arch_spin_lock(&ftrace_dump_lock); - if (dump_ran) - goto out; - - dump_ran = 1; tracing_off(); @@ -5206,7 +5201,6 @@ __ftrace_dump(bool disable_tracing, enum ftrace_dump_mode oops_dump_mode) tracing_on(); } - out: arch_spin_unlock(&ftrace_dump_lock); local_irq_restore(flags); } -- 1.7.9.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
