Messages in this thread | | | Date | Tue, 27 Jul 2004 12:01:25 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH][2.6] Allow x86_64 to reenable interrupts on contention |
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Zwane Mwaikambo <zwane@linuxpower.ca> wrote: > > On Tue, 27 Jul 2004, Andi Kleen wrote: > > > On Tue, 27 Jul 2004 05:29:10 -0400 (EDT) > > Zwane Mwaikambo <zwane@linuxpower.ca> wrote: > > > > > This is a follow up to the previous patches for ia64 and i386, it will > > > allow x86_64 to reenable interrupts during contested locks depending on > > > previous interrupt enable status. It has been runtime and compile tested > > > on UP and 2x SMP Linux-tiny/x86_64. > > > > This will likely increase code size. Do you have numbers by how much? And is it > > really worth it? > > Yes there is a growth; > > text data bss dec hex filename > 3655358 1340511 486128 5481997 53a60d vmlinux-after > 3648445 1340511 486128 5475084 538b0c vmlinux-before
The growth is all in the out-of-line section, so there should be no significant additional icache pressure.
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