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From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: linux-mips@vger.kernel.org
Cc: tsbogend@alpha.franken.de, chenhc@lemote.com,
	Jiaxun Yang <jiaxun.yang@flygoat.com>
Subject: [PATCH RESEND v2 1/2] MIPS: cacheinfo: Add missing VCache
Date: Fri, 27 Mar 2020 10:00:15 +0800
Message-ID: <20200327020016.460733-1-jiaxun.yang@flygoat.com> (raw)
In-Reply-To: <20200326105956.455291-1-jiaxun.yang@flygoat.com>

Victim Cache is defined by Loongson as per-core unified
private Cache.
Add this into cacheinfo and make cache levels selfincrement
instead of hardcode levels.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/kernel/cacheinfo.c | 34 ++++++++++++++++++++++++++--------
 1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/arch/mips/kernel/cacheinfo.c b/arch/mips/kernel/cacheinfo.c
index 47312c529410..83548331ee94 100644
--- a/arch/mips/kernel/cacheinfo.c
+++ b/arch/mips/kernel/cacheinfo.c
@@ -35,6 +35,11 @@ static int __init_cache_level(unsigned int cpu)
 
 	leaves += (c->icache.waysize) ? 2 : 1;
 
+	if (c->vcache.waysize) {
+		levels++;
+		leaves++;
+	}
+
 	if (c->scache.waysize) {
 		levels++;
 		leaves++;
@@ -74,25 +79,38 @@ static int __populate_cache_leaves(unsigned int cpu)
 	struct cpuinfo_mips *c = &current_cpu_data;
 	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
 	struct cacheinfo *this_leaf = this_cpu_ci->info_list;
+	int level = 1;
 
 	if (c->icache.waysize) {
-		/* L1 caches are per core */
+		/* D/I caches are per core */
 		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
-		populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA);
+		populate_cache(dcache, this_leaf, level, CACHE_TYPE_DATA);
 		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
-		populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST);
+		populate_cache(icache, this_leaf, level, CACHE_TYPE_INST);
+		level++;
 	} else {
-		populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED);
+		populate_cache(dcache, this_leaf, level, CACHE_TYPE_UNIFIED);
+		level++;
+	}
+
+	if (c->vcache.waysize) {
+		/* Vcache is per core as well */
+		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
+		populate_cache(vcache, this_leaf, level, CACHE_TYPE_UNIFIED);
+		level++;
 	}
 
 	if (c->scache.waysize) {
-		/* L2 cache is per cluster */
+		/* Scache is per cluster */
 		fill_cpumask_cluster(cpu, &this_leaf->shared_cpu_map);
-		populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED);
+		populate_cache(scache, this_leaf, level, CACHE_TYPE_UNIFIED);
+		level++;
 	}
 
-	if (c->tcache.waysize)
-		populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
+	if (c->tcache.waysize) {
+		populate_cache(tcache, this_leaf, level, CACHE_TYPE_UNIFIED);
+		level++;
+	}
 
 	this_cpu_ci->cpu_map_populated = true;
 
-- 
2.26.0.rc2



  parent reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26 10:59 [PATCH " Jiaxun Yang
2020-03-26 10:59 ` [PATCH 2/2] MIPS: Loongson64: Set cluster for cores Jiaxun Yang
2020-03-27  1:47 ` [PATCH 1/2] MIPS: cacheinfo: Add missing VCache Jiaxun Yang
2020-03-27  1:47   ` [PATCH 2/2] MIPS: Loongson64: Set cluster for cores Jiaxun Yang
2020-03-27  2:00 ` Jiaxun Yang [this message]
2020-03-27  2:00   ` [PATCH RESEND v2 " Jiaxun Yang

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