The patch titled
Redefine {un}register_hotcpu_notifier() !HOTPLUG_CPU stubs
has been removed from the -mm tree. Its filename was
redefine-unregister_hotcpu_notifier-hotplug_cpu-stubs.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Redefine {un}register_hotcpu_notifier() !HOTPLUG_CPU stubs
From: Satyam Sharma <satyam@xxxxxxxxxxxxx>
The return of the present "do {} while" based stub definition of
register_hotcpu_notifier() cannot be checked. This makes the stub
asymmetric w.r.t. the real HOTPLUG_CPU=y implementation that is
int-returning. So let us redefine this to be consistent with the full
version. Also do the same for unregister_hotcpu_notifier().
We cannot define these as static inline functions due to an existing GCC
bug (#33172). So define as macros that return appropriately instead (int
'0' for the register_hotcpu_notifier case and void for
unregister_hotcpu_notifier).
Signed-off-by: Satyam Sharma <satyam@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/cpu.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN include/linux/cpu.h~redefine-unregister_hotcpu_notifier-hotplug_cpu-stubs include/linux/cpu.h
--- a/include/linux/cpu.h~redefine-unregister_hotcpu_notifier-hotplug_cpu-stubs
+++ a/include/linux/cpu.h
@@ -119,8 +119,9 @@ static inline void cpuhotplug_mutex_unlo
#define lock_cpu_hotplug() do { } while (0)
#define unlock_cpu_hotplug() do { } while (0)
#define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0)
-#define register_hotcpu_notifier(nb) do { (void)(nb); } while (0)
-#define unregister_hotcpu_notifier(nb) do { (void)(nb); } while (0)
+/* These aren't inline functions due to a GCC bug. */
+#define register_hotcpu_notifier(nb) ({ (void)(nb); 0; })
+#define unregister_hotcpu_notifier(nb) ({ (void)(nb); })
/* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */
static inline int cpu_is_offline(int cpu) { return 0; }
_
Patches currently in -mm which might be from satyam@xxxxxxxxxxxxx are
origin.patch
git-watchdog.patch
-
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