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authorSteven Rostedt <srostedt@redhat.com>2009-09-04 14:24:40 -0400
committerSteven Rostedt <rostedt@goodmis.org>2009-09-04 19:42:22 -0400
commit85bac32c4a52c592b857f2c360cc5ec93a097d70 (patch)
tree510e516dd5fa388cb9582a2f6b055f3725fbf2c1 /tools
parent62f0b3eb5cb58931a02ee4e599e19c80a171e351 (diff)
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op-kernel-dev-85bac32c4a52c592b857f2c360cc5ec93a097d70.tar.gz
ring-buffer: only enable ring_buffer_swap_cpu when needed
Since the ability to swap the cpu buffers adds a small overhead to the recording of a trace, we only want to add it when needed. Only the irqsoff and preemptoff tracers use this feature, and both are not recommended for production kernels. This patch disables its use when neither irqsoff nor preemptoff is configured. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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