bianbu-repo-mirror/bianbu-linux-6.6
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6 synced 2025-04-26 14:17:26 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

tracing/ring-buffer: Move poll wake ups into ring buffer code

Browse source 
Move the logic to wake up on ring buffer data into the ring buffer
code itself. This simplifies the tracing code a lot and also has the
added benefit that waiters on one of the instance buffers can be woken
only when data is added to that instance instead of data added to
any instance.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-02-28 19:59:17 -05:00 • committed by Steven Rostedt
parent b627344fef
commit 15693458c4
3 changed files with 164 additions and 71 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/ring_buffer.h
View file

@ -4,6 +4,7 @@
#include <linux/kmemcheck.h>
#include <linux/mm.h>
#include <linux/seq_file.h>
#include <linux/poll.h>
struct ring_buffer;
struct ring_buffer_iter;
@ -96,6 +97,11 @@ __ring_buffer_alloc(unsigned long size, unsigned flags, struct lock_class_key *k
__ring_buffer_alloc((size), (flags), &__key); \
})
void ring_buffer_wait(struct ring_buffer *buffer, int cpu);
int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
struct file *filp, poll_table *poll_table);
#define RING_BUFFER_ALL_CPUS -1
void ring_buffer_free(struct ring_buffer *buffer);