linux-kernel - [PATCH v6 08/21] cacheinfo: Align checks in cache_shared_cpu_map

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Date:   Mon,  4 Jul 2022 11:15:52 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Sudeep Holla <sudeep.holla@....com>, conor.dooley@...rochip.com,
        valentina.fernandezalanis@...rochip.com,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Qing Wang <wangqing@...o.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Ionela Voinescu <ionela.voinescu@....com>,
        Pierre Gondois <pierre.gondois@....com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org
Subject: [PATCH v6 08/21] cacheinfo: Align checks in cache_shared_cpu_map_{setup,remove} for readability

The checks to skip the CPU itself or no cacheinfo case are implemented
bit differently though the effect is exactly same. Just align the
implementation in both cache_shared_cpu_map_{setup,remove} just for
improved readability. No functional change.

Signed-off-by: Sudeep Holla <sudeep.holla@....com>
---
 drivers/base/cacheinfo.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index e331b399adeb..65d566ff24c4 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -279,6 +279,7 @@ static int cache_shared_cpu_map_setup(unsigned int cpu)
 
 			if (i == cpu || !sib_cpu_ci->info_list)
 				continue;/* skip if itself or no cacheinfo */
+
 			sib_leaf = per_cpu_cacheinfo_idx(i, index);
 			if (cache_leaves_are_shared(this_leaf, sib_leaf)) {
 				cpumask_set_cpu(cpu, &sib_leaf->shared_cpu_map);
@@ -301,14 +302,11 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
 	for (index = 0; index < cache_leaves(cpu); index++) {
 		this_leaf = per_cpu_cacheinfo_idx(cpu, index);
 		for_each_cpu(sibling, &this_leaf->shared_cpu_map) {
-			struct cpu_cacheinfo *sib_cpu_ci;
-
-			if (sibling == cpu) /* skip itself */
-				continue;
+			struct cpu_cacheinfo *sib_cpu_ci =
+						get_cpu_cacheinfo(sibling);
 
-			sib_cpu_ci = get_cpu_cacheinfo(sibling);
-			if (!sib_cpu_ci->info_list)
-				continue;
+			if (sibling == cpu || !sib_cpu_ci->info_list)
+				continue;/* skip if itself or no cacheinfo */
 
 			sib_leaf = per_cpu_cacheinfo_idx(sibling, index);
 			cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);
-- 
2.37.0