trace: annotate bitfields in struct ring_buffer_event (1744a21d) · Commits · 戴 / test

include/linux/ring_buffer.h

+4 −0

Original line number	Diff line number	Diff line
		#ifndef _LINUX_RING_BUFFER_H
		#define _LINUX_RING_BUFFER_H

		#include <linux/kmemcheck.h>
		#include <linux/mm.h>
		#include <linux/seq_file.h>

		@@ -11,7 +12,10 @@ struct ring_buffer_iter;
		* Don't refer to this struct directly, use functions below.
		*/
		struct ring_buffer_event {
		kmemcheck_bitfield_begin(bitfield);
		u32 type_len:5, time_delta:27;
		kmemcheck_bitfield_end(bitfield);

		u32 array[];
		};

+3 −0

Original line number	Diff line number	Diff line
		@@ -10,6 +10,7 @@
		#include <linux/debugfs.h>
		#include <linux/uaccess.h>
		#include <linux/hardirq.h>
		#include <linux/kmemcheck.h>
		#include <linux/module.h>
		#include <linux/percpu.h>
		#include <linux/mutex.h>
		@@ -1270,6 +1271,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
		if (tail < BUF_PAGE_SIZE) {
		/* Mark the rest of the page with padding */
		event = __rb_page_index(tail_page, tail);
		kmemcheck_annotate_bitfield(event, bitfield);
		rb_event_set_padding(event);
		}

		@@ -1327,6 +1329,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
		return NULL;

		event = __rb_page_index(tail_page, tail);
		kmemcheck_annotate_bitfield(event, bitfield);
		rb_update_event(event, type, length);

		/* The passed in type is zero for DATA */