x86/smp/boot: Remove 10ms delay from cpu_up() on modern processors
authorLen Brown <len.brown@intel.com>
Mon, 11 May 2015 21:27:10 +0000 (17:27 -0400)
committerIngo Molnar <mingo@kernel.org>
Tue, 12 May 2015 06:54:33 +0000 (08:54 +0200)
commit1a744cb356c57303fc97eb15a298032170f841fa
tree4b53ce69c8ec5a9a7ce3fec39223f213055d1d41
parentd68921f9bd148359e6d01c84aaa2e32bfbd82970
x86/smp/boot: Remove 10ms delay from cpu_up() on modern processors

Modern processor familes do not require the 10ms delay
in cpu_up() to de-assert INIT.  This speeds up boot
and resume by 10ms per (application) processor.

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan H. Schönherr <jschoenh@amazon.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/021ce30c88f216ad39686646421194dc25671e55.1431379433.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/smpboot.c