From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/oprofile/event_buffer.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 drivers/oprofile/event_buffer.h (limited to 'drivers/oprofile/event_buffer.h') diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h new file mode 100644 index 000000000..a8d5bb3cb --- /dev/null +++ b/drivers/oprofile/event_buffer.h @@ -0,0 +1,40 @@ +/** + * @file event_buffer.h + * + * @remark Copyright 2002 OProfile authors + * @remark Read the file COPYING + * + * @author John Levon + */ + +#ifndef EVENT_BUFFER_H +#define EVENT_BUFFER_H + +#include +#include + +int alloc_event_buffer(void); + +void free_event_buffer(void); + +/** + * Add data to the event buffer. + * The data passed is free-form, but typically consists of + * file offsets, dcookies, context information, and ESCAPE codes. + */ +void add_event_entry(unsigned long data); + +/* wake up the process sleeping on the event file */ +void wake_up_buffer_waiter(void); + +#define INVALID_COOKIE ~0UL +#define NO_COOKIE 0UL + +extern const struct file_operations event_buffer_fops; + +/* mutex between sync_cpu_buffers() and the + * file reading code. + */ +extern struct mutex buffer_mutex; + +#endif /* EVENT_BUFFER_H */ -- cgit v1.2.3