diff mbox series

tracing: Fix trace entry and trace common fields for preempt_lazy_count

Message ID 20200221153541.681468-1-jolsa@kernel.org
State New
Headers show
Series tracing: Fix trace entry and trace common fields for preempt_lazy_count | expand

Commit Message

Jiri Olsa Feb. 21, 2020, 3:35 p.m. UTC 
When commit 65fd07df3588 added preempt_lazy_count into 'struct trace_entry'
it did not add 4 bytes padding. Also we need to update the common fields
for tracepoint, otherwise some tools (bpftrace) stop working due to missing
common fields.

Fixes: 65fd07df3588 ("x86: Support for lazy preemption")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 include/linux/trace_events.h | 2 ++
 kernel/trace/trace_events.c  | 3 +++
 2 files changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index f3b1ef07e4a5..51a3f5188923 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -65,6 +65,8 @@  struct trace_entry {
 	unsigned short		migrate_disable;
 	unsigned short		padding;
 	unsigned char		preempt_lazy_count;
+	unsigned char		padding1;
+	unsigned short		padding2;
 };
 
 #define TRACE_EVENT_TYPE_MAX						\
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index accaae59a762..1fe37b7aeaff 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -183,6 +183,9 @@  static int trace_define_common_fields(void)
 	__common_field(int, pid);
 	__common_field(unsigned short, migrate_disable);
 	__common_field(unsigned short, padding);
+	__common_field(unsigned char,  preempt_lazy_count);
+	__common_field(unsigned char,  padding1);
+	__common_field(unsigned short, padding2);
 
 	return ret;
 }