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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2011-09-09 02:50:12 +0200 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2011-09-28 08:37:20 +0200 |
| commit | 4a7f340c6a75ec5fca23d9c80a59f3f28cc4a61e (patch) | |
| tree | 3680ac96e1a2ab091e7d157b65b30ac15d41f4b9 /arch/x86/include/asm/spinlock.h | |
| parent | x86, cmpxchg: Use __compiletime_error() to make usage messages a bit nicer (diff) | |
| download | linux-4a7f340c6a75ec5fca23d9c80a59f3f28cc4a61e.tar.xz linux-4a7f340c6a75ec5fca23d9c80a59f3f28cc4a61e.zip | |
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: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/include/asm/spinlock.h')
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index f5695eeb83ff..972c260919a3 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h @@ -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) { |