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authorAshok Raj <ashok.raj@intel.com>2005-09-09 13:01:53 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 13:57:30 -0700
commit092c948811359d8715790af0eedefc7dff1cd619 (patch)
tree9936b6014dda94ed52efe64e34f9d923cbae8390
parentfdf26d933a8171c2a5bd35b4a5ca3b099a216a35 (diff)
[PATCH] x86_64: Don't call enforce_max_cpus when hotplug is enabled
enforce_max_cpus nukes out cpu_present_map and cpu_possible_map making it impossible to add new cpus in the system. Since it doesnt provide any additional value apart this call and reference is removed. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/x86_64/kernel/smpboot.c19
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 90aeccd1519..4fb34b5cb1f 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -894,23 +894,6 @@ static __init void disable_smp(void)
cpu_set(0, cpu_core_map[0]);
}
-/*
- * Handle user cpus=... parameter.
- */
-static __init void enforce_max_cpus(unsigned max_cpus)
-{
- int i, k;
- k = 0;
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_possible(i))
- continue;
- if (++k > max_cpus) {
- cpu_clear(i, cpu_possible_map);
- cpu_clear(i, cpu_present_map);
- }
- }
-}
-
#ifdef CONFIG_HOTPLUG_CPU
/*
* cpu_possible_map should be static, it cannot change as cpu's
@@ -999,8 +982,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
current_cpu_data = boot_cpu_data;
current_thread_info()->cpu = 0; /* needed? */
- enforce_max_cpus(max_cpus);
-
#ifdef CONFIG_HOTPLUG_CPU
prefill_possible_map();
#endif