linux-kernel - [PATCH v2 3/3] mm/zswap: allocate acomp on the numa node committing acomp

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Message-ID: <20200623041610.7620-4-song.bao.hua@hisilicon.com>
Date:   Tue, 23 Jun 2020 16:16:10 +1200
From:   Barry Song <song.bao.hua@...ilicon.com>
To:     <herbert@...dor.apana.org.au>, <davem@...emloft.net>
CC:     <wangzhou1@...ilicon.com>, <jonathan.cameron@...wei.com>,
        <akpm@...ux-foundation.org>, <linux-crypto@...r.kernel.org>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, Barry Song <song.bao.hua@...ilicon.com>,
        Seth Jennings <sjenning@...hat.com>,
        Dan Streetman <ddstreet@...e.org>,
        Vitaly Wool <vitaly.wool@...sulko.com>
Subject: [PATCH v2 3/3] mm/zswap: allocate acomp on the numa node committing acomp_req

zswap is allocating acomp on one different cpu with those cpus which will
eventually committing acomp_req. this patch specifies the numa node to
help compression/decompression done by local (de)compressors hardware.

Cc: Seth Jennings <sjenning@...hat.com>
Cc: Dan Streetman <ddstreet@...e.org>
Cc: Vitaly Wool <vitaly.wool@...sulko.com>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: David S. Miller" <davem@...emloft.net>
Signed-off-by: Barry Song <song.bao.hua@...ilicon.com>
---
 -v2: patch is rebased againest "[PATCH] mm/zswap: careful error path
 implementation in comp_prepare" [1]
 [1] https://lkml.org/lkml/2020/6/22/347

 mm/zswap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index c0a85ef46610..98db09524af6 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -438,7 +438,7 @@ static int zswap_cpu_comp_prepare(unsigned int cpu, struct hlist_node *node)
 		pr_err("Could not allocate acomp_ctx\n");
 		return -ENOMEM;
 	}
-	acomp = crypto_alloc_acomp(pool->tfm_name, 0, 0);
+	acomp = crypto_alloc_acomp_node(pool->tfm_name, 0, 0, cpu_to_node(cpu));
 	if (IS_ERR(acomp)) {
 		pr_err("could not alloc crypto acomp %s : %ld\n",
 				pool->tfm_name, PTR_ERR(acomp));
-- 
2.27.0