diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 988a35263fdd..5e3ad3481e4b 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -253,6 +253,9 @@ unsigned long long ns2usecs(cycle_t nsec) #define TOP_LEVEL_TRACE_FLAGS (TRACE_ITER_PRINTK | \ TRACE_ITER_PRINTK_MSGONLY | TRACE_ITER_RECORD_CMD) +/* trace_flags that are default zero for instances */ +#define ZEROED_TRACE_FLAGS \ + TRACE_ITER_EVENT_FORK /* * The global_trace is the descriptor that holds the tracing @@ -6710,7 +6713,7 @@ static int instance_mkdir(const char *name) if (!alloc_cpumask_var(&tr->tracing_cpumask, GFP_KERNEL)) goto out_free_tr; - tr->trace_flags = global_trace.trace_flags; + tr->trace_flags = global_trace.trace_flags & ~ZEROED_TRACE_FLAGS; cpumask_copy(tr->tracing_cpumask, cpu_all_mask); @@ -6784,6 +6787,12 @@ static int instance_rmdir(const char *name) list_del(&tr->list); + /* Disable all the flags that were enabled coming in */ + for (i = 0; i < TRACE_FLAGS_MAX_SIZE; i++) { + if ((1 << i) & ZEROED_TRACE_FLAGS) + set_tracer_flag(tr, 1 << i, 0); + } + tracing_set_nop(tr); event_trace_del_tracer(tr); ftrace_destroy_function_files(tr); |