> Il giorno 13 mag 2020, alle ore 18:02, Jan Kara <jack@xxxxxxx> ha scritto: > > Currently informational messages within block trace do not have PID > information of the process reporting the message included. With BFQ it > is sometimes useful to have the information and there's no good reason > to omit the information from the trace. So just fill in pid information > when generating note message. > Acked-by: Paolo Valente <paolo.valente@xxxxxxxxxx> Thank you! Paolo > Signed-off-by: Jan Kara <jack@xxxxxxx> > --- > kernel/trace/blktrace.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c > index ca39dc3230cb..ea47f2084087 100644 > --- a/kernel/trace/blktrace.c > +++ b/kernel/trace/blktrace.c > @@ -170,10 +170,10 @@ void __trace_note_message(struct blk_trace *bt, struct blkcg *blkcg, > if (!(blk_tracer_flags.val & TRACE_BLK_OPT_CGROUP)) > blkcg = NULL; > #ifdef CONFIG_BLK_CGROUP > - trace_note(bt, 0, BLK_TN_MESSAGE, buf, n, > + trace_note(bt, current->pid, BLK_TN_MESSAGE, buf, n, > blkcg ? cgroup_id(blkcg->css.cgroup) : 1); > #else > - trace_note(bt, 0, BLK_TN_MESSAGE, buf, n, 0); > + trace_note(bt, current->pid, BLK_TN_MESSAGE, buf, n, 0); > #endif > local_irq_restore(flags); > } > -- > 2.16.4 >
