MIPS: SGI-IP27: No need for slice_map (d96ee783) · Commits · 戴 / test

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

arch/mips/include/asm/mach-ip27/mmzone.h

+0 −1

Original line number	Diff line number	Diff line
		@@ -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 {

arch/mips/sgi-ip27/ip27-init.c

+0 −5

Original line number	Diff line number	Diff line
		@@ -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);

Admin message