mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-21 01:51:18 +00:00
arm64: mm: don't bother invalidating the icache in switch_mm
We don't support software broadcast of cache maintenance operations, so this flush is not required (__sync_icache_dcache will always affect all CPUs). Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
parent
4ecf7ccb19
commit
737c16dffc
1 changed files with 0 additions and 6 deletions
|
@ -151,12 +151,6 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
|
||||||
{
|
{
|
||||||
unsigned int cpu = smp_processor_id();
|
unsigned int cpu = smp_processor_id();
|
||||||
|
|
||||||
#ifdef CONFIG_SMP
|
|
||||||
/* check for possible thread migration */
|
|
||||||
if (!cpumask_empty(mm_cpumask(next)) &&
|
|
||||||
!cpumask_test_cpu(cpu, mm_cpumask(next)))
|
|
||||||
__flush_icache_all();
|
|
||||||
#endif
|
|
||||||
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next)
|
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next)
|
||||||
check_and_switch_context(next, tsk);
|
check_and_switch_context(next, tsk);
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue