[PATCH 01/12] MIPS: setup: Drop prefill_possible_map

From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: linux-mips@vger.kernel.org
Cc: "Jiaxun Yang" <jiaxun.yang@flygoat.com>,
	"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
	"Huacai Chen" <chenhc@lemote.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Arnaldo Carvalho de Melo" <acme@kernel.org>,
	"Mark Rutland" <mark.rutland@arm.com>,
	"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
	"Jiri Olsa" <jolsa@redhat.com>,
	"Namhyung Kim" <namhyung@kernel.org>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Robert Richter" <rric@kernel.org>,
	"Sudeep Holla" <sudeep.holla@arm.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Jason Cooper" <jason@lakedaemon.net>,
	"Marc Zyngier" <maz@kernel.org>,
	"Paul Burton" <paulburton@kernel.org>,
	"Allison Randal" <allison@lohutok.net>,
	"Enrico Weigelt" <info@metux.net>,
	"Kate Stewart" <kstewart@linuxfoundation.org>,
	"Vladimir Kondratiev" <vladimir.kondratiev@intel.com>,
	"Richard Fontana" <rfontana@redhat.com>,
	"Paul Cercueil" <paul@crapouillou.net>,
	"Zhou Yanjie" <zhouyanjie@zoho.com>,
	"周琰杰 (Zhou Yanjie)" <zhouyanjie@wanyeetech.com>,
	"YunQiang Su" <syq@debian.org>, "Arnd Bergmann" <arnd@arndb.de>,
	"Serge Semin" <fancer.lancer@gmail.com>,
	"Matt Redfearn" <matt.redfearn@mips.com>,
	"Alexios Zavras" <alexios.zavras@intel.com>,
	"Steve Winslow" <swinslow@gmail.com>,
	"afzal mohammed" <afzal.mohd.ma@gmail.com>,
	"Peter Xu" <peterx@redhat.com>,
	"Oleksij Rempel" <linux@rempel-privat.de>,
	"Kamal Dasu" <kdasu.kdev@gmail.com>,
	"Mike Rapoport" <rppt@linux.ibm.com>,
	linux-kernel@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	oprofile-list@lists.sf.net
Subject: [PATCH 01/12] MIPS: setup: Drop prefill_possible_map
Date: Wed,  8 Apr 2020 19:34:11 +0800	[thread overview]
Message-ID: <20200408113505.2528103-2-jiaxun.yang@flygoat.com> (raw)
In-Reply-To: <20200408113505.2528103-1-jiaxun.yang@flygoat.com>

All the plat_smp_setup are setting up possible cpus in their
platform code. So prefill_possible_map is actually overwriting
platform's setup, which seems unreasonable.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/kernel/setup.c | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 10bef8f78e7c..8a418783a6bb 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -761,25 +761,6 @@ static void __init resource_init(void)
 	}
 }
 
-#ifdef CONFIG_SMP
-static void __init prefill_possible_map(void)
-{
-	int i, possible = num_possible_cpus();
-
-	if (possible > nr_cpu_ids)
-		possible = nr_cpu_ids;
-
-	for (i = 0; i < possible; i++)
-		set_cpu_possible(i, true);
-	for (; i < NR_CPUS; i++)
-		set_cpu_possible(i, false);
-
-	nr_cpu_ids = possible;
-}
-#else
-static inline void prefill_possible_map(void) {}
-#endif
-
 void __init setup_arch(char **cmdline_p)
 {
 	cpu_probe();
@@ -804,7 +785,6 @@ void __init setup_arch(char **cmdline_p)
 
 	resource_init();
 	plat_smp_setup();
-	prefill_possible_map();
 
 	cpu_cache_init();
 	paging_init();
-- 
2.26.0.rc2


