Re: [PATCH] tracepoint: Do not fail unregistering a probe due to memory allocation
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: 2020-11-17 21:22:50
Also in:
bpf, lkml
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: 2020-11-17 21:22:50
Also in:
bpf, lkml
----- On Nov 17, 2020, at 3:58 PM, rostedt rostedt@goodmis.org wrote:
On Tue, 17 Nov 2020 15:34:51 -0500 Steven Rostedt [off-list ref] wrote:
[...]
If it comes down to not trusting calling a stub, I'll still keep the stub logic in, and just add the following:
If we don't call the stub, then there is no point in having the stub at all, and we should just compare to a constant value, e.g. 0x1UL. As far as I can recall, comparing with a small immediate constant is more efficient than comparing with a loaded value on many architectures. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com