[ovs-dev] [PATCH] dpif/dpcls: limit count subtable search info logs

Kumar Amber kumar.amber at intel.com
Tue Jun 29 16:49:41 UTC 2021

From: Harry van Haaren <harry.van.haaren at intel.com>

This commit avoids many instances of "using subtable X for miniflow (x,y)"
in the ovs-vswitchd log when using the DPCLS Autovalidator. This occurs
when no specialized subtable is found, and the generic "_any" version of
the avx512 subtable search implementation was used. This change logs the
subtable usage once, avoiding duplicates.

Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com>
 lib/dpif-netdev-lookup-avx512-gather.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dpif-netdev-lookup-avx512-gather.c b/lib/dpif-netdev-lookup-avx512-gather.c
index bc359dc4a..f1b44deb3 100644
--- a/lib/dpif-netdev-lookup-avx512-gather.c
+++ b/lib/dpif-netdev-lookup-avx512-gather.c
@@ -411,7 +411,7 @@ dpcls_subtable_avx512_gather_probe(uint32_t u0_bits, uint32_t u1_bits)
     if (!f && (u0_bits + u1_bits) < (NUM_U64_IN_ZMM_REG * 2)) {
         f = dpcls_avx512_gather_mf_any;
-        VLOG_INFO("Using avx512_gather_mf_any for subtable (%d,%d)\n",
+        VLOG_INFO_ONCE("Using avx512_gather_mf_any for subtable (%d,%d)\n",
                   u0_bits, u1_bits);

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