On Friday 29 January 2016 19:18:24 Al Viro wrote: > From: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > > Add asm-usable variants of EXPORT_SYMBOL/EXPORT_SYMBOL_GPL. This > commit just adds the default implementation; most of the architectures > can simply add export.h to asm/Kbuild and start using <asm/export.h> > from assembler. The area where the things might diverge from default > is the alignment; normally it's 8 bytes on 64bit targets and 4 on > 32bit ones, both for unsigned long and for struct kernel_symbol. > > Unfortunately, amd64 and m68k are unusual - m68k aligns to 2 bytes > (for both) and amd64 aligns struct kernel_symbol to 16 bytes. For > those we'll need to have asm/export.h overriding the constants used > by generic version (KSYM_ALIGN and KCRC_ALIGN for kernel_symbol and > unsigned long resp.) and including asm-generic/export.h. > > And no, __alignof__ would not do the trick - on amd64 __alignof__ > of struct kernel_symbol is 8, not 16. > > Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > --- > include/asm-generic/export.h | 61 ++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 61 insertions(+) > create mode 100644 include/asm-generic/export.h > For asm-generic: Acked-by: Arnd Bergmann <arnd@xxxxxxxx> -- 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
