diff options
| author | Ashok Raj <ashok.raj@intel.com> | 2005-09-09 22:01:53 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 22:57:30 +0200 |
| commit | 092c948811359d8715790af0eedefc7dff1cd619 (patch) | |
| tree | 9936b6014dda94ed52efe64e34f9d923cbae8390 /arch | |
| parent | [PATCH] x86_64: Don't do broadcast IPIs when hotplug is enabled in flat mode. (diff) | |
| download | linux-092c948811359d8715790af0eedefc7dff1cd619.tar.xz linux-092c948811359d8715790af0eedefc7dff1cd619.zip | |
[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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/smpboot.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index 90aeccd15190..4fb34b5cb1f9 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 |