* [PATCH v3 [resend] 04/18] smp, ARM: kill SMP single function call interrupt
[not found] <1387125400-28849-1-git-send-email-liuj97@gmail.com>
@ 2013-12-15 16:36 ` Jiang Liu
2013-12-15 16:36 ` [PATCH v3 [resend] 05/18] smp, ARM64: " Jiang Liu
1 sibling, 0 replies; 3+ messages in thread
From: Jiang Liu @ 2013-12-15 16:36 UTC (permalink / raw)
To: linux-arm-kernel
Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel at lists.infradead.org
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
---
arch/arm/include/asm/hardirq.h | 2 +-
arch/arm/kernel/smp.c | 10 +---------
2 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index fe3ea77..3d7351c 100644
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -5,7 +5,7 @@
#include <linux/threads.h>
#include <asm/irq.h>
-#define NR_IPI 8
+#define NR_IPI 7
typedef struct {
unsigned int __softirq_pending;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index dc894ab..e24a23d 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -65,7 +65,6 @@ enum ipi_msg_type {
IPI_TIMER,
IPI_RESCHEDULE,
IPI_CALL_FUNC,
- IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
IPI_IRQ_WORK,
IPI_COMPLETION,
@@ -448,7 +447,7 @@ void arch_send_wakeup_ipi_mask(const struct cpumask *mask)
void arch_send_call_function_single_ipi(int cpu)
{
- smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
+ smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);
}
#ifdef CONFIG_IRQ_WORK
@@ -465,7 +464,6 @@ static const char *ipi_types[NR_IPI] = {
S(IPI_TIMER, "Timer broadcast interrupts"),
S(IPI_RESCHEDULE, "Rescheduling interrupts"),
S(IPI_CALL_FUNC, "Function call interrupts"),
- S(IPI_CALL_FUNC_SINGLE, "Single function call interrupts"),
S(IPI_CPU_STOP, "CPU stop interrupts"),
S(IPI_IRQ_WORK, "IRQ work interrupts"),
S(IPI_COMPLETION, "completion interrupts"),
@@ -579,12 +577,6 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
irq_exit();
break;
- case IPI_CALL_FUNC_SINGLE:
- irq_enter();
- generic_smp_call_function_single_interrupt();
- irq_exit();
- break;
-
case IPI_CPU_STOP:
irq_enter();
ipi_cpu_stop(cpu);
--
1.8.1.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v3 [resend] 05/18] smp, ARM64: kill SMP single function call interrupt
[not found] <1387125400-28849-1-git-send-email-liuj97@gmail.com>
2013-12-15 16:36 ` [PATCH v3 [resend] 04/18] smp, ARM: kill SMP single function call interrupt Jiang Liu
@ 2013-12-15 16:36 ` Jiang Liu
2013-12-17 17:16 ` Will Deacon
1 sibling, 1 reply; 3+ messages in thread
From: Jiang Liu @ 2013-12-15 16:36 UTC (permalink / raw)
To: linux-arm-kernel
Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel at lists.infradead.org
Signed-off-by: Jiang Liu <liuj97@gmail.com>
---
arch/arm64/include/asm/hardirq.h | 2 +-
arch/arm64/kernel/smp.c | 10 +---------
2 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/include/asm/hardirq.h b/arch/arm64/include/asm/hardirq.h
index 990c051..3be64c8 100644
--- a/arch/arm64/include/asm/hardirq.h
+++ b/arch/arm64/include/asm/hardirq.h
@@ -20,7 +20,7 @@
#include <linux/threads.h>
#include <asm/irq.h>
-#define NR_IPI 4
+#define NR_IPI 3
typedef struct {
unsigned int __softirq_pending;
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index a0c2ca6..ea3e9ab 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -59,7 +59,6 @@ struct secondary_data secondary_data;
enum ipi_msg_type {
IPI_RESCHEDULE,
IPI_CALL_FUNC,
- IPI_CALL_FUNC_SINGLE,
IPI_CPU_STOP,
};
@@ -438,14 +437,13 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
void arch_send_call_function_single_ipi(int cpu)
{
- smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE);
+ smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC);
}
static const char *ipi_types[NR_IPI] = {
#define S(x,s) [x - IPI_RESCHEDULE] = s
S(IPI_RESCHEDULE, "Rescheduling interrupts"),
S(IPI_CALL_FUNC, "Function call interrupts"),
- S(IPI_CALL_FUNC_SINGLE, "Single function call interrupts"),
S(IPI_CPU_STOP, "CPU stop interrupts"),
};
@@ -520,12 +518,6 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
irq_exit();
break;
- case IPI_CALL_FUNC_SINGLE:
- irq_enter();
- generic_smp_call_function_single_interrupt();
- irq_exit();
- break;
-
case IPI_CPU_STOP:
irq_enter();
ipi_cpu_stop(cpu);
--
1.8.1.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v3 [resend] 05/18] smp, ARM64: kill SMP single function call interrupt
2013-12-15 16:36 ` [PATCH v3 [resend] 05/18] smp, ARM64: " Jiang Liu
@ 2013-12-17 17:16 ` Will Deacon
0 siblings, 0 replies; 3+ messages in thread
From: Will Deacon @ 2013-12-17 17:16 UTC (permalink / raw)
To: linux-arm-kernel
On Sun, Dec 15, 2013 at 04:36:27PM +0000, Jiang Liu wrote:
> Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
> similar to smp_call_function_single()" has unified the way to handle
> single and multiple cross-CPU function calls. Now only one interrupt
> is needed for architecture specific code to support generic SMP function
> call interfaces, so kill the redundant single function call interrupt.
>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Shaohua Li <shli@kernel.org>
> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Cc: Ingo Molnar <mingo@elte.hu>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Jiri Kosina <trivial@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: linux-arm-kernel at lists.infradead.org
> Signed-off-by: Jiang Liu <liuj97@gmail.com>
> ---
> arch/arm64/include/asm/hardirq.h | 2 +-
> arch/arm64/kernel/smp.c | 10 +---------
> 2 files changed, 2 insertions(+), 10 deletions(-)
Acked-by: Will Deacon <will.deacon@arm.com>
I assume you're taking this series via some other route (than the arch/
trees) in order to deal with any core dependencies?
Will
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-15 16:36 ` [PATCH v3 [resend] 04/18] smp, ARM: kill SMP single function call interrupt Jiang Liu
2013-12-15 16:36 ` [PATCH v3 [resend] 05/18] smp, ARM64: " Jiang Liu
2013-12-17 17:16 ` Will Deacon
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