Subject: + smph-move-smp-version-of-on_each_cpu-out-of-line.patch added to -mm tree
To: david.daney@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 05 Aug 2013 15:47:29 -0700
The patch titled
Subject: smp.h: move !SMP version of on_each_cpu() out-of-line
has been added to the -mm tree. Its filename is
smph-move-smp-version-of-on_each_cpu-out-of-line.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/smph-move-smp-version-of-on_each_cpu-out-of-line.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/smph-move-smp-version-of-on_each_cpu-out-of-line.patch
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------------------------------------------------------
From: David Daney <david.daney@xxxxxxxxxx>
Subject: smp.h: move !SMP version of on_each_cpu() out-of-line
All of the other non-trivial !SMP versions of functions in smp.h are
out-of-line in up.c. Move on_each_cpu() there as well.
This allows us to get rid of the #include <linux/irqflags.h>. The
drawback is that this makes both the x86_64 and i386 defconfig !SMP
kernels about 200 bytes larger each.
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/smp.h | 21 +++++----------------
kernel/up.c | 11 +++++++++++
2 files changed, 16 insertions(+), 16 deletions(-)
diff -puN include/linux/smp.h~smph-move-smp-version-of-on_each_cpu-out-of-line include/linux/smp.h
--- a/include/linux/smp.h~smph-move-smp-version-of-on_each_cpu-out-of-line
+++ a/include/linux/smp.h
@@ -11,7 +11,6 @@
#include <linux/list.h>
#include <linux/cpumask.h>
#include <linux/init.h>
-#include <linux/irqflags.h>
extern void cpu_idle(void);
@@ -30,6 +29,11 @@ int smp_call_function_single(int cpuid,
int wait);
/*
+ * Call a function on all processors
+ */
+int on_each_cpu(smp_call_func_t func, void *info, int wait);
+
+/*
* Call a function on processors specified by mask, which might include
* the local one.
*/
@@ -112,11 +116,6 @@ static inline void call_function_init(vo
#endif
/*
- * Call a function on all processors
- */
-int on_each_cpu(smp_call_func_t func, void *info, int wait);
-
-/*
* Mark the boot cpu "online" so that it can call console drivers in
* printk() and can access its per-cpu storage.
*/
@@ -141,16 +140,6 @@ static inline int up_smp_call_function(s
#define smp_call_function(func, info, wait) \
(up_smp_call_function(func, info))
-static inline int on_each_cpu(smp_call_func_t func, void *info, int wait)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- func(info);
- local_irq_restore(flags);
- return 0;
-}
-
static inline void __smp_call_function_single(int cpuid,
struct call_single_data *data, int wait)
{
diff -puN kernel/up.c~smph-move-smp-version-of-on_each_cpu-out-of-line kernel/up.c
--- a/kernel/up.c~smph-move-smp-version-of-on_each_cpu-out-of-line
+++ a/kernel/up.c
@@ -22,6 +22,17 @@ int smp_call_function_single(int cpu, vo
}
EXPORT_SYMBOL(smp_call_function_single);
+int on_each_cpu(smp_call_func_t func, void *info, int wait)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ func(info);
+ local_irq_restore(flags);
+ return 0;
+}
+EXPORT_SYMBOL(on_each_cpu);
+
/*
* Note we still need to test the mask even for UP
* because we actually can get an empty mask from
_
Patches currently in -mm which might be from david.daney@xxxxxxxxxx are
revert-include-linux-smph-on_each_cpu-switch-back-to-a-macro.patch
smp-quit-unconditionally-enabling-irq-in-on_each_cpu_mask-and-on_each_cpu_cond.patch
upc-use-local_irq_saverestore-in-smp_call_function_single.patch
smph-move-smp-version-of-on_each_cpu-out-of-line.patch
linux-next.patch
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