The patch titled
Remove unused PROC_CHANGE_PENALTY constant
has been added to the -mm tree. Its filename is
remove-unused-proc_change_penalty-constant.patch
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out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: Remove unused PROC_CHANGE_PENALTY constant
From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
This constant hasn't been used since before the git era (2.6.12) and thus
can be dropped.
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Hirokazu Takata <takata@xxxxxxxxxxxxxx>
Cc: Kyle McMartin <kyle@xxxxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/include/asm/smp.h | 2 --
arch/arm/include/asm/smp.h | 6 ------
arch/m32r/include/asm/smp.h | 2 --
arch/parisc/include/asm/smp.h | 9 ---------
arch/um/include/asm/smp.h | 1 -
5 files changed, 20 deletions(-)
diff -puN arch/alpha/include/asm/smp.h~remove-unused-proc_change_penalty-constant arch/alpha/include/asm/smp.h
--- a/arch/alpha/include/asm/smp.h~remove-unused-proc_change_penalty-constant
+++ a/arch/alpha/include/asm/smp.h
@@ -39,8 +39,6 @@ struct cpuinfo_alpha {
extern struct cpuinfo_alpha cpu_data[NR_CPUS];
-#define PROC_CHANGE_PENALTY 20
-
#define hard_smp_processor_id() __hard_smp_processor_id()
#define raw_smp_processor_id() (current_thread_info()->cpu)
diff -puN arch/arm/include/asm/smp.h~remove-unused-proc_change_penalty-constant arch/arm/include/asm/smp.h
--- a/arch/arm/include/asm/smp.h~remove-unused-proc_change_penalty-constant
+++ a/arch/arm/include/asm/smp.h
@@ -20,12 +20,6 @@
#define raw_smp_processor_id() (current_thread_info()->cpu)
-/*
- * at the moment, there's not a big penalty for changing CPUs
- * (the >big< penalty is running SMP in the first place)
- */
-#define PROC_CHANGE_PENALTY 15
-
struct seq_file;
/*
diff -puN arch/m32r/include/asm/smp.h~remove-unused-proc_change_penalty-constant arch/m32r/include/asm/smp.h
--- a/arch/m32r/include/asm/smp.h~remove-unused-proc_change_penalty-constant
+++ a/arch/m32r/include/asm/smp.h
@@ -94,8 +94,6 @@ extern void arch_send_call_function_ipi_
#define NO_PROC_ID (0xff) /* No processor magic marker */
-#define PROC_CHANGE_PENALTY (15) /* Schedule penalty */
-
/*
* M32R-mp IPI
*/
diff -puN arch/parisc/include/asm/smp.h~remove-unused-proc_change_penalty-constant arch/parisc/include/asm/smp.h
--- a/arch/parisc/include/asm/smp.h~remove-unused-proc_change_penalty-constant
+++ a/arch/parisc/include/asm/smp.h
@@ -33,15 +33,6 @@ extern void arch_send_call_function_ipi_
#endif /* !ASSEMBLY */
-/*
- * This magic constant controls our willingness to transfer
- * a process across CPUs. Such a transfer incurs cache and tlb
- * misses. The current value is inherited from i386. Still needs
- * to be tuned for parisc.
- */
-
-#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
-
#define raw_smp_processor_id() (current_thread_info()->cpu)
#else /* CONFIG_SMP */
diff -puN arch/um/include/asm/smp.h~remove-unused-proc_change_penalty-constant arch/um/include/asm/smp.h
--- a/arch/um/include/asm/smp.h~remove-unused-proc_change_penalty-constant
+++ a/arch/um/include/asm/smp.h
@@ -11,7 +11,6 @@
#define cpu_logical_map(n) (n)
#define cpu_number_map(n) (n)
-#define PROC_CHANGE_PENALTY 15 /* Pick a number, any number */
extern int hard_smp_processor_id(void);
#define NO_PROC_ID -1
_
Patches currently in -mm which might be from sboyd@xxxxxxxxxxxxxx are
origin.patch
linux-next.patch
remove-unused-proc_change_penalty-constant.patch
lib-consolidate-debug_per_cpu_maps.patch
lib-consolidate-debug_stack_usage-option.patch
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