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author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2008-02-15 12:00:23 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:40:47 +0200 |
commit | 03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874 (patch) | |
tree | e9dffa8c5eccd43ea8284d7e2e48b782166bbcac /arch/x86/kernel/cpu/intel.c | |
parent | bc7c314d7048017caa0725b41cc577cccf4fc53b (diff) | |
download | op-kernel-dev-03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874.zip op-kernel-dev-03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874.tar.gz |
x86: use ELF section to list CPU vendor specific code
Replace the hardcoded list of initialization functions for each CPU
vendor by a list in an ELF section, which is read at initialization in
arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF
section, named .x86cpuvendor.init, is reclaimed after boot, and
contains entries of type "struct cpu_vendor_dev" which associates a
vendor number with a pointer to a "struct cpu_dev" structure.
This first modification allows to remove all the VENDOR_init_cpu()
functions.
This patch also removes the hardcoded calls to early_init_amd() and
early_init_intel(). Instead, we add a "c_early_init" member to the
cpu_dev structure, which is then called if not NULL by the generic CPU
initialization code. Unfortunately, in early_cpu_detect(), this_cpu is
not yet set, so we have to use the cpu_devs[] array directly.
This patch is part of the Linux Tiny project, and is needed for
further patch that will allow to disable compilation of unused CPU
support code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/cpu/intel.c')
-rw-r--r-- | arch/x86/kernel/cpu/intel.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index fae31ce..34468b2 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -30,7 +30,7 @@ struct movsl_mask movsl_mask __read_mostly; #endif -void __cpuinit early_init_intel(struct cpuinfo_x86 *c) +static void __cpuinit early_init_intel(struct cpuinfo_x86 *c) { /* Netburst reports 64 bytes clflush size, but does IO in 128 bytes */ if (c->x86 == 15 && c->x86_cache_alignment == 64) @@ -290,15 +290,12 @@ static struct cpu_dev intel_cpu_dev __cpuinitdata = { } }, }, + .c_early_init = early_init_intel, .c_init = init_intel, .c_size_cache = intel_size_cache, }; -__init int intel_cpu_init(void) -{ - cpu_devs[X86_VENDOR_INTEL] = &intel_cpu_dev; - return 0; -} +cpu_vendor_dev_register(X86_VENDOR_INTEL, &intel_cpu_dev); #ifndef CONFIG_X86_CMPXCHG unsigned long cmpxchg_386_u8(volatile void *ptr, u8 old, u8 new) |