35 lines
1.1 KiB
Diff
35 lines
1.1 KiB
Diff
From: Zefir Kurtisi <zefir.kurtisi@neratec.com>
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Date: Tue, 16 Jun 2015 10:34:03 +0200
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Subject: [PATCH] ath: DFS - limit number of potential PRI sequences
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In the PRI detector, after the current radar pulse
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has been checked agains existing PRI sequences, it
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is considered as part of a new potential sequence.
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Previously, the condition to accept a new sequence
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was to have at least the same number of pulses as
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the longest matching sequence. This was wrong,
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since it led to duplicates of PRI sequences.
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This patch changes the acceptance criteria for new
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potential sequences from 'at least' to 'more than'
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the longest existing.
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Detection performance remains unaffected, while
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the number of PRI sequences accounted at runtime
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(and with it CPU load) is reduced by up to 50%.
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Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
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---
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--- a/drivers/net/wireless/ath/dfs_pri_detector.c
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+++ b/drivers/net/wireless/ath/dfs_pri_detector.c
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@@ -273,7 +273,7 @@ static bool pseq_handler_create_sequence
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tmp_false_count++;
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}
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}
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- if (ps.count < min_count)
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+ if (ps.count <= min_count)
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/* did not reach minimum count, drop sequence */
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continue;
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