From 048c9b954e20396e0c45ee778466994d1be2e612 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 12 Apr 2017 22:07:27 +0200 Subject: [PATCH] ia64/topology: Remove cpus_allowed manipulation The CPU hotplug callback fiddles with the cpus_allowed pointer to pin the calling thread on the plugged CPU. That's already guaranteed by the hotplug core code. Remove it. Signed-off-by: Thomas Gleixner Cc: Fenghua Yu Cc: Tony Luck Cc: linux-ia64@vger.kernel.org Cc: Herbert Xu Cc: "Rafael J. Wysocki" Cc: Peter Zijlstra Cc: Benjamin Herrenschmidt Cc: Sebastian Siewior Cc: Lai Jiangshan Cc: Viresh Kumar Cc: Michael Ellerman Cc: Tejun Heo Cc: "David S. Miller" Cc: Len Brown Link: http://lkml.kernel.org/r/20170412201042.174518069@linutronix.de Signed-off-by: Thomas Gleixner --- arch/ia64/kernel/topology.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index 1a68f01..d76529c 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -355,18 +355,12 @@ static int cache_add_dev(unsigned int cpu) unsigned long i, j; struct cache_info *this_object; int retval = 0; - cpumask_t oldmask; if (all_cpu_cache_info[cpu].kobj.parent) return 0; - oldmask = current->cpus_allowed; - retval = set_cpus_allowed_ptr(current, cpumask_of(cpu)); - if (unlikely(retval)) - return retval; retval = cpu_cache_sysfs_init(cpu); - set_cpus_allowed_ptr(current, &oldmask); if (unlikely(retval < 0)) return retval; -- 2.7.4