From: Mike Travis <travis@sgi.com>
Date: Thu, 1 Jan 2009 02:08:45 +0000 (-0800)
Subject: x86: enable cpus display of kernel_max and offlined cpus
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=730cf27246225d56ca1603b2f3c4fdbf882d4e51;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

x86: enable cpus display of kernel_max and offlined cpus

Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface

By setting total_cpus, the drivers/base/cpu.c will display the
values of kernel_max (NR_CPUS-1) and the offlined cpu map.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 9e177a4077ee..f49c26bd7e2d 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1298,6 +1298,8 @@ __init void prefill_possible_map(void)
 	else
 		possible = setup_possible_cpus;
 
+	total_cpus = max_t(int, possible, num_processors + disabled_cpus);
+
 	if (possible > CONFIG_NR_CPUS) {
 		printk(KERN_WARNING
 			"%d Processors exceeds NR_CPUS limit of %d\n",