[for-next][PATCH 00/15] tracing/seq-buf/printk: New seq-buf utility from trace_seq for printk in NMI

From: Steven Rostedt
Date: Thu Nov 20 2014 - 10:31:45 EST

I created a separate branch for this change (although it's still going into
my for-next branch which ends up in linux-next. But that branch is made
up of multiple branches).

I'm hoping that it makes it into 3.19, but I'll give that choice to Linus.
This is based off of a point of my ftrace/core branch which is my normal
branch. But this one is separate because it may not be accepted. I'll just
have to wait and see. New work for tracing will not be based on this branch.

Although Linus may not accept it, I still want it in linux-next for further

-- Steve


Head SHA1: a9edc88093287183ac934be44f295f183b2c62dd

Steven Rostedt (Red Hat) (15):
tracing: Create seq_buf layer in trace_seq
tracing: Convert seq_buf_path() to be like seq_path()
tracing: Convert seq_buf fields to be like seq_file fields
tracing: Add a seq_buf_clear() helper and clear len and readpos in init
seq_buf: Create seq_buf_used() to find out how much was written
tracing: Clean up tracing_fill_pipe_page()
tracing: Use trace_seq_used() and seq_buf_used() instead of len
tracing: Add paranoid size check in trace_printk_seq()
seq_buf: Add seq_buf_can_fit() helper function
tracing: Have seq_buf use full buffer
tracing: Add seq_buf_get_buf() and seq_buf_commit() helper functions
seq-buf: Make seq_buf_bprintf() conditional on CONFIG_BINARY_PRINTF
seq_buf: Move the seq_buf code to lib/
printk: Add per_cpu printk func to allow printk to be diverted
x86/nmi: Perform a safe NMI stack trace on all CPUs

arch/x86/kernel/apic/hw_nmi.c | 91 ++++++++-
include/linux/percpu.h | 3 +
include/linux/printk.h | 2 +
include/linux/seq_buf.h | 136 +++++++++++++
include/linux/trace_seq.h | 30 ++-
kernel/printk/printk.c | 38 +++-
kernel/trace/trace.c | 65 +++++--
kernel/trace/trace_events.c | 9 +-
kernel/trace/trace_functions_graph.c | 11 +-
kernel/trace/trace_seq.c | 177 ++++++++---------
lib/Makefile | 2 +-
lib/seq_buf.c | 359 +++++++++++++++++++++++++++++++++++
12 files changed, 779 insertions(+), 144 deletions(-)
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