diff options
| author | Mike Travis <travis@sgi.com> | 2007-10-19 22:35:04 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-19 22:35:04 +0400 |
| commit | 92cb7612aee39642d109b8d935ad265e602c0563 (patch) | |
| tree | 307f4183226f52418bd6842b5d970f03524ad1c1 /arch/x86/kernel/vsyscall_64.c | |
| parent | f1df280f53d7c3ce8613a3b25d1efe009b9860dd (diff) | |
| download | linux-92cb7612aee39642d109b8d935ad265e602c0563.tar.xz | |
x86: convert cpuinfo_x86 array to a per_cpu array
cpu_data is currently an array defined using NR_CPUS. This means that
we overallocate since we will rarely really use maximum configured cpus.
When NR_CPU count is raised to 4096 the size of cpu_data becomes
3,145,728 bytes.
These changes were adopted from the sparc64 (and ia64) code. An
additional field was added to cpuinfo_x86 to be a non-ambiguous cpu
index. This corresponds to the index into a cpumask_t as well as the
per_cpu index. It's used in various places like show_cpuinfo().
cpu_data is defined to be the boot_cpu_data structure for the NON-SMP
case.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/vsyscall_64.c')
| -rw-r--r-- | arch/x86/kernel/vsyscall_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c index 4a2c340ab0f3..78f2250963ae 100644 --- a/arch/x86/kernel/vsyscall_64.c +++ b/arch/x86/kernel/vsyscall_64.c @@ -291,7 +291,7 @@ static void __cpuinit vsyscall_set_cpu(int cpu) #ifdef CONFIG_NUMA node = cpu_to_node(cpu); #endif - if (cpu_has(&cpu_data[cpu], X86_FEATURE_RDTSCP)) + if (cpu_has(&cpu_data(cpu), X86_FEATURE_RDTSCP)) write_rdtscp_aux((node << 12) | cpu); /* Store cpu number in limit so that it can be loaded quickly |