lkml.org 
[lkml]   [2014]   [Oct]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] arm64: Fix compile error seen in non-SMP builds
On Fri, Oct 10, 2014 at 06:15:34PM -0700, Guenter Roeck wrote:
> Fix:
>
> In file included from ./arch/arm64/include/asm/irq_work.h:4:0,
> from include/linux/irq_work.h:46,
> from include/linux/perf_event.h:49,
> from include/linux/ftrace_event.h:9,
> from include/trace/syscall.h:6,
> from include/linux/syscalls.h:81,
> from init/main.c:18:
> ./arch/arm64/include/asm/smp.h:24:3:
> error: #error "<asm/smp.h> included in non-SMP build"
> # error "<asm/smp.h> included in non-SMP build"
> ^
> ./arch/arm64/include/asm/smp.h:27:0: warning: "raw_smp_processor_id" redefined
> #define raw_smp_processor_id() (current_thread_info()->cpu)
> ^
>
> and:
>
> In file included from ./arch/arm64/include/asm/irq_work.h:4:0,
> from include/linux/irq_work.h:46,
> from kernel/irq_work.c:11:
> ./arch/arm64/include/asm/smp_plat.h:56:30:
> error: ‘NR_CPUS’ undeclared here (not in a function)
> extern u64 __cpu_logical_map[NR_CPUS];
>
> by providing a helper function in smp_plat.h, similar to the arm implementation,
> and by removing NR_CPUS from smp_plat.h.
>
> Fixes: 3631073659d0 ("arm64: Tell irq work about self IPI support")
> Cc: Frederic Weisbecker <fweisbec@gmail.com>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>

That looks good to me.

Note, ARM64 is one of the archs I couldn't test due to the lack of a
nolibc cross compiler in https://www.kernel.org/pub/tools/crosstool/

Thanks!
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2014-10-11 15:41    [W:1.635 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site