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Subject[PATCH 0/3] tracing: block-able ring_buffer consumer

The first patch fixes a bug of splice_read for ring_buffer, and makes
rb_get_reader_page() can be easily used by block-able/poll-able codes.

The other patches make consumer block-able and poll-able.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
b/include/linux/ftrace.h | 6 ++
b/include/linux/ring_buffer.h | 4 +
b/kernel/timer.c | 2
b/kernel/trace/ring_buffer.c | 29 +++++++------
b/kernel/trace/trace.c | 39 ++++++++++++++++--
include/linux/ring_buffer.h | 3 +
kernel/trace/ring_buffer.c | 89 ++++++++++++++++++++++++++++++++++++++++++
kernel/trace/trace.c | 9 ++++
8 files changed, 163 insertions(+), 18 deletions(-)






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