Messages in this thread | | | Date | Thu, 20 Apr 2017 09:58:10 -0400 | From | Steven Rostedt <> | Subject | [PATCH 0/2] [GIT PULL] tracing: Two more small fixes |
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Linus,
While continuing my development, I uncovered two more small bugs.
One is a race condition when enabling the snapshot function probe trigger. It enables the probe before allocating the snapshot, and if the probe triggers first, it stops tracing with a warning that the snapshot buffer was not allocated.
The seconds is that the snapshot file should show how to use it when it is empty. But a bug fix from long ago broke the "is empty" test and the snapshot file no longer displays the help message.
Please pull the latest trace-v4.11-rc5-5 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git trace-v4.11-rc5-5
Tag SHA1: 561b3641a9deebe33accebee8dfc1a70df7b7ac5 Head SHA1: 78f7a45dac2a2d2002f98a3a95f7979867868d73
Steven Rostedt (VMware) (2): tracing: Allocate the snapshot buffer before enabling probe ring-buffer: Have ring_buffer_iter_empty() return true when empty
---- kernel/trace/ring_buffer.c | 16 ++++++++++++++-- kernel/trace/trace.c | 8 +++++--- 2 files changed, 19 insertions(+), 5 deletions(-)
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