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921d4f67bf
- 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.
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Merge tag 'trace-v4.15-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- 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.
* tag 'trace-v4.15-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
ring-buffer: Bring back context level recursive checks
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