From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/oprofile/event_buffer.h | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 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 0000000..442aaad --- /dev/null +++ b/drivers/oprofile/event_buffer.h @@ -0,0 +1,48 @@ +/** + * @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); + +/* wake up the process sleeping on the event file */ +void wake_up_buffer_waiter(void); + +/* Each escaped entry is prefixed by ESCAPE_CODE + * then one of the following codes, then the + * relevant data. + */ +#define ESCAPE_CODE ~0UL +#define CTX_SWITCH_CODE 1 +#define CPU_SWITCH_CODE 2 +#define COOKIE_SWITCH_CODE 3 +#define KERNEL_ENTER_SWITCH_CODE 4 +#define KERNEL_EXIT_SWITCH_CODE 5 +#define MODULE_LOADED_CODE 6 +#define CTX_TGID_CODE 7 +#define TRACE_BEGIN_CODE 8 +#define TRACE_END_CODE 9 + +/* add data to the event buffer */ +void add_event_entry(unsigned long data); + +extern struct file_operations event_buffer_fops; + +/* mutex between sync_cpu_buffers() and the + * file reading code. + */ +extern struct semaphore buffer_sem; + +#endif /* EVENT_BUFFER_H */ -- cgit v1.1