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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-03 09:03:01 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 13:00:26 +0200 |
| commit | 45046892ef89c1e0caad66a03c8c1e14ad478d23 (patch) | |
| tree | 3ca4b2c854561914cb2a0ac26caea9255ab7bc9c /arch/x86/kernel/process.c | |
| parent | 5b408241e99bd3f670122d4e6142b69cc6c24098 (diff) | |
x86: Use generic init_task
Same code. Use the generic version. The special Makefile treatment is
pointless anyway as init_task.o contains only data which is handled by
the linker script. So no point on being treated like head text.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120503085035.739963562@linutronix.de
Cc: x86@kernel.org
Diffstat (limited to 'arch/x86/kernel/process.c')
| -rw-r--r-- | arch/x86/kernel/process.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 1d92a5ab6e8..8aa532fa015 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -27,6 +27,15 @@ #include <asm/debugreg.h> #include <asm/nmi.h> +/* + * per-CPU TSS segments. Threads are completely 'soft' on Linux, + * no more per-task TSS's. The TSS size is kept cacheline-aligned + * so they are allowed to end up in the .data..cacheline_aligned + * section. Since TSS's are completely CPU-local, we want them + * on exact cacheline boundaries, to eliminate cacheline ping-pong. + */ +DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS; + #ifdef CONFIG_X86_64 static DEFINE_PER_CPU(unsigned char, is_idle); static ATOMIC_NOTIFIER_HEAD(idle_notifier); |