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8d74895527
Currently, asm/percpu.h is directly or indirectly included by some assembly files on x86. Some of them (e.g., checksum_32.S) are also used on um. But x86 and um provide different versions of asm/percpu.h -- um uses asm-generic/percpu.h directly. When SMP is enabled, asm-generic/percpu.h will introduce C code that cannot be assembled. Since asm-generic/percpu.h currently is not designed for use in assembly, and these assembly files do not actually need asm/percpu.h on um, let's add the assembly guard in asm-generic/percpu.h to fix this issue. Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-arch@vger.kernel.org Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://patch.msgid.link/20251027001815.1666872-8-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com>