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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2008-02-15 12:00:23 +0100
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:40:47 +0200
commit03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874 (patch)
treee9dffa8c5eccd43ea8284d7e2e48b782166bbcac /arch/x86/kernel/cpu/umc.c
parentbc7c314d7048017caa0725b41cc577cccf4fc53b (diff)
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/umc.c')
-rw-r--r--arch/x86/kernel/cpu/umc.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/kernel/cpu/umc.c b/arch/x86/kernel/cpu/umc.c
index a7a4e75bdcd7..b1acf08245fb 100644
--- a/arch/x86/kernel/cpu/umc.c
+++ b/arch/x86/kernel/cpu/umc.c
@@ -19,8 +19,5 @@ static struct cpu_dev umc_cpu_dev __cpuinitdata = {
},
};
-int __init umc_init_cpu(void)
-{
- cpu_devs[X86_VENDOR_UMC] = &umc_cpu_dev;
- return 0;
-}
+cpu_vendor_dev_register(X86_VENDOR_UMC, &umc_cpu_dev);
+