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strparser: Don't schedule in workqueue in paused state 

In function strp_data_ready(), it is useless to call queue_work if
the state of strparser is already paused. The state checking should
be done before calling queue_work. The change reduces the context
switches and improves the ktls-rx throughput by approx 20% (measured
on cortex-a53 based platform).

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vakul Garg 2018-06-21 03:29:49 +05:30 committed by David S. Miller
parent 73f9c33beb
commit 456488cd95
1 changed files with 1 additions and 4 deletions
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5
net/strparser/strparser.c
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@ -392,7 +392,7 @@ static int strp_read_sock(struct strparser *strp)
/* Lower sock lock held */
void strp_data_ready(struct strparser *strp)
{
if (unlikely(strp->stopped))
if (unlikely(strp->stopped) || strp->paused)
return;
/* This check is needed to synchronize with do_strp_work.
@ -407,9 +407,6 @@ void strp_data_ready(struct strparser *strp)
return;
}
if (strp->paused)
return;
if (strp->need_bytes) {
if (strp_peek_len(strp) < strp->need_bytes)
return;