lkml.org 
[lkml]   [2018]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[PATCH 0/2] [GIT PULL] tracing: A couple of fixes for 4.15

Linus,

This includes two fixes

- Bring back context level recursive protection in ring buffer.
The simpler counter protection failed, due to a path when
tracing with trace_clock_global() as it could not be reentrant
and depended on the ring buffer recursive protection to keep that
from happening.

- Prevent branch profiling when FORTIFY_SOURCE is enabled. It causes
50 - 60 MB in warning messages. Branch profiling should never be
run on production systems, so there's no reason that it needs to
be enabled with FORTIFY_SOURCE.

Please pull the latest trace-v4.15-rc4-2 tree, which can be found at:


git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v4.15-rc4-2

Tag SHA1: a7fa05e04911a3f5c77818516b137ac742523911
Head SHA1: 68e76e034b6b1c1ce2eece1ab8ae4008e14be470


Randy Dunlap (1):
tracing: Prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y

Steven Rostedt (VMware) (1):
ring-buffer: Bring back context level recursive checks

----
kernel/trace/Kconfig | 2 +-
kernel/trace/ring_buffer.c | 62 +++++++++++++++++++++++++++++++++-------------
2 files changed, 46 insertions(+), 18 deletions(-)

\
 
 \ /
  Last update: 2018-01-16 03:01    [W:0.027 / U:12.976 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site