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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/oprofile/event_buffer.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/oprofile/event_buffer.h')
-rw-r--r-- | kernel/drivers/oprofile/event_buffer.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/drivers/oprofile/event_buffer.h b/kernel/drivers/oprofile/event_buffer.h new file mode 100644 index 000000000..a8d5bb3cb --- /dev/null +++ b/kernel/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 <levon@movementarian.org> + */ + +#ifndef EVENT_BUFFER_H +#define EVENT_BUFFER_H + +#include <linux/types.h> +#include <linux/mutex.h> + +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 */ |