The patch titled
cpumask: let num_*_cpus() function always return unsigned values
has been added to the -mm tree. Its filename is
cpumask-let-num__cpus-function-always-return-unsigned-values.patch
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Subject: cpumask: let num_*_cpus() function always return unsigned values
From: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Dependent on CONFIG_SMP the num_*_cpus() functions return unsigned or
signed values. Let them always return unsigned values to avoid strange
casts.
Fixes at least one warning:
kernel/kprobes.c: In function 'register_kretprobe':
kernel/kprobes.c:1038: warning: comparison of distinct pointer types lacks a cast
Signed-off-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/cpumask.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN include/linux/cpumask.h~cpumask-let-num__cpus-function-always-return-unsigned-values include/linux/cpumask.h
--- a/include/linux/cpumask.h~cpumask-let-num__cpus-function-always-return-unsigned-values
+++ a/include/linux/cpumask.h
@@ -90,10 +90,10 @@ extern const struct cpumask *const cpu_a
#define cpu_present(cpu) cpumask_test_cpu((cpu), cpu_present_mask)
#define cpu_active(cpu) cpumask_test_cpu((cpu), cpu_active_mask)
#else
-#define num_online_cpus() 1
-#define num_possible_cpus() 1
-#define num_present_cpus() 1
-#define num_active_cpus() 1
+#define num_online_cpus() 1U
+#define num_possible_cpus() 1U
+#define num_present_cpus() 1U
+#define num_active_cpus() 1U
#define cpu_online(cpu) ((cpu) == 0)
#define cpu_possible(cpu) ((cpu) == 0)
#define cpu_present(cpu) ((cpu) == 0)
_
Patches currently in -mm which might be from heiko.carstens@xxxxxxxxxx are
linux-next.patch
cpumask-let-num__cpus-function-always-return-unsigned-values.patch
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