Re: [PATCH] Revert "net: Get rid of consume_skb when tracing is off"

From: Herbert Xu
Date: Thu Jul 29 2021 - 00:03:13 EST


On Thu, Jul 29, 2021 at 04:01:28AM +0000, yajun.deng@xxxxxxxxx wrote:
>
> if we don't define CONFIG_TRACEPOINTS, consume_skb() wolud called kfree_skb(), there have
> trace_kfree_skb() in kfree_skb(), the trace_kfree_skb() is also a trace function. So we
> can trace consume_skb() even if we don't define CONFIG_TRACEPOINTS.
> This patch "net: Get rid of consume_skb when tracing is off" does not seem to be effective.

The point of my patch was to get rid of consume_skb because its
only purpose is to provide extra information for tracing. If you're
not tracing then you don't need that extra information (and overhead).

Cheers,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
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