diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2022-02-07 16:59:05 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-02-16 15:57:54 +0100 |
| commit | c8fb9f22ae22dbe06a43b77717299e1c3e632d5c (patch) | |
| tree | 9770459ec792c8e225a138ddab3ad3e4a8ef0f69 | |
| parent | 7b45b51e778021cd7817b8f0d743a2c73205c011 (diff) | |
net: Decouple HK_FLAG_WQ and HK_FLAG_DOMAIN cpumask fetch
To prepare for supporting each feature of the housekeeping cpumask
toward cpuset, prepare each of the HK_FLAG_* entries to move to their
own cpumask with enforcing to fetch them individually. The new
constraint is that multiple HK_FLAG_* entries can't be mixed together
anymore in a single call to housekeeping cpumask().
This will later allow, for example, to runtime modify the cpulist passed
through "isolcpus=", "nohz_full=" and "rcu_nocbs=" kernel boot
parameters.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juri Lelli <juri.lelli@redhat.com>
Reviewed-by: Phil Auld <pauld@redhat.com>
Link: https://lore.kernel.org/r/20220207155910.527133-4-frederic@kernel.org
| -rw-r--r-- | net/core/net-sysfs.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 53ea262ecafd..ed8da7b8d35b 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -823,7 +823,7 @@ 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)) @@ -839,8 +839,8 @@ 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; |