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Commit 4a7f340c authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
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x86, ticketlock: remove obsolete comment 



The note about partial registers is not really relevent now that we
rely on gcc to generate all the assembler.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 61e2cd0a

arch/x86/include/asm/spinlock.h

+0 −4
Original line number Diff line number Diff line
@@ -49,10 +49,6 @@ 
 * issues and should be optimal for the uncontended case. Note the tail must be

 * in the high part, because a wide xadd increment of the low part would carry

 * up and contaminate the high part.

 *

 * With fewer than 2^8 possible CPUs, we can use x86's partial registers to

 * save some instructions and make the code more elegant. There really isn't

 * much between them in performance though, especially as locks are out of line.

 */

static __always_inline void __ticket_spin_lock(arch_spinlock_t *lock)

{