Thread (18 messages) 18 messages, 6 authors, 2021-07-21
STALE1776d

[RFC PATCH 3/6] net: Decouple HK_FLAG_WQ and HK_FLAG_DOMAIN cpumask fetch

From: Frederic Weisbecker <frederic@kernel.org>
Date: 2021-07-14 13:54:39
Also in: lkml
Subsystem: networking [general], the rest · Maintainers: "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

To prepare for supporting each feature of the housekeeping cpumask
toward cpuset, prepare for HK_FLAG_DOMAIN to move to its own cpumask.
This will allow to modify the set passed through "isolcpus=" kernel boot
parameter on runtime.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Thomas Gleixner <redacted>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Marcelo Tosatti <redacted>
Cc: Nitesh Lal <redacted>
Cc: Nicolas Saenz <redacted>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Lameter <redacted>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <redacted>
Cc: Alex Belits <redacted>
---
 net/core/net-sysfs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index f6197774048b..78ea904e9206 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -782,7 +782,7 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue,
 {
 	struct rps_map *old_map, *map;
 	cpumask_var_t mask;
-	int err, cpu, i, hk_flags;
+	int err, cpu, i;
 	static DEFINE_MUTEX(rps_map_mutex);
 
 	if (!capable(CAP_NET_ADMIN))
@@ -798,8 +798,8 @@ static ssize_t store_rps_map(struct netdev_rx_queue *queue,
 	}
 
 	if (!cpumask_empty(mask)) {
-		hk_flags = HK_FLAG_DOMAIN | HK_FLAG_WQ;
-		cpumask_and(mask, mask, housekeeping_cpumask(hk_flags));
+		cpumask_and(mask, mask, housekeeping_cpumask(HK_FLAG_DOMAIN));
+		cpumask_and(mask, mask, housekeeping_cpumask(HK_FLAG_WQ));
 		if (cpumask_empty(mask)) {
 			free_cpumask_var(mask);
 			return -EINVAL;
-- 
2.25.1
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