On Tue, Jul 01, 2014 at 12:11:47PM -0700, Filipe Brandenburger wrote: > From: Zhengyu He <hzy@xxxxxxxxxx> > > This fixes a typo that named the read_mostly section of percpu as > readmostly. It works fine with SMP because the linker script specifies > .data..percpu..readmostly. However, UP kernel builds don't have percpu > sections defined and the non-percpu version of the section is called > data..read_mostly, so .data..readmostly will float around and may break > things unexpectedly. > > Looking at the original change that introduced data..percpu..readmostly > (commit c957ef2c59e952803766ddc22e89981ab534606f), it looks like this > was the original intention. > > Tested: Built UP kernel and confirmed the sections got merged. > > - Before the patch: > $ objdump -h vmlinux.o | grep '\.data\.\.read.*mostly' > 38 .data..read_mostly 00004418 0000000000000000 0000000000000000 00431ac0 2**6 > 50 .data..readmostly 00000014 0000000000000000 0000000000000000 00444000 2**3 > > - After the patch: > $ objdump -h vmlinux.o | grep '\.data\.\.read.*mostly' > 38 .data..read_mostly 00004438 0000000000000000 0000000000000000 00431ac0 2**6 > > Signed-off-by: Zhengyu He <hzy@xxxxxxxxxx> > Signed-off-by: Filipe Brandenburger <filbranden@xxxxxxxxxx> Applied to percpu/for-3.16-fixes. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
