AcoSail/kernel_optimize_test
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MIPS: SGI-IP27: No need for slice_map

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per_cpu_init is called exactly once for every CPU. So there is no
need for protection via slice_map.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
This commit is contained in:
Thomas Bogendoerfer 2020-01-09 13:33:51 +01:00 committed by Paul Burton
parent d31f9e6489
commit d96ee783e3
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2 changed files with 0 additions and 6 deletions
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1
arch/mips/include/asm/mach-ip27/mmzone.h
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@ -13,7 +13,6 @@ struct hub_data {
kern_vars_t kern_vars;
DECLARE_BITMAP(h_bigwin_used, HUB_NUM_BIG_WINDOW);
cpumask_t h_cpus;
unsigned long slice_map;
};
struct node_data {

5
arch/mips/sgi-ip27/ip27-init.c
View File

@ -72,12 +72,7 @@ static void per_hub_init(nasid_t nasid)
void per_cpu_init(void)
{
int cpu = smp_processor_id();
int slice = LOCAL_HUB_L(PI_CPU_NUM);
nasid_t nasid = get_nasid();
struct hub_data *hub = hub_data(nasid);
if (test_and_set_bit(slice, &hub->slice_map))
return;
clear_c0_status(ST0_IM);