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From: Jiang Liu <jiang.liu@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	linux390@de.ibm.com, Michael Holzheu <holzheu@linux.vnet.ibm.com>,
	"Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
	Jiang Liu <jiang.liu@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>, Tony Luck <tony.luck@intel.com>,
	linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [Resend Patch v4 14/16] smp, s390: Kill SMP single function call interrupt
Date: Fri, 23 Jan 2015 13:36:53 +0800	[thread overview]
Message-ID: <1421991416-20297-15-git-send-email-jiang.liu@linux.intel.com> (raw)
In-Reply-To: <1421991416-20297-1-git-send-email-jiang.liu@linux.intel.com>

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.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Heiko Carstens <heiko.carst...@de.ibm.com>
---
 arch/s390/kernel/smp.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 0b499f5cbe19..5b89eabc3a01 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -50,7 +50,7 @@
 
 enum {
 	ec_schedule = 0,
-	ec_call_function_single,
+	ec_call_function,
 	ec_stop_cpu,
 };
 
@@ -416,8 +416,8 @@ static void smp_handle_ext_call(void)
 		smp_stop_cpu();
 	if (test_bit(ec_schedule, &bits))
 		scheduler_ipi();
-	if (test_bit(ec_call_function_single, &bits))
-		generic_smp_call_function_single_interrupt();
+	if (test_bit(ec_call_function, &bits))
+		generic_smp_call_function_interrupt();
 }
 
 static void do_ext_call_interrupt(struct ext_code ext_code,
@@ -432,12 +432,12 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 	int cpu;
 
 	for_each_cpu(cpu, mask)
-		pcpu_ec_call(pcpu_devices + cpu, ec_call_function_single);
+		pcpu_ec_call(pcpu_devices + cpu, ec_call_function);
 }
 
 void arch_send_call_function_single_ipi(int cpu)
 {
-	pcpu_ec_call(pcpu_devices + cpu, ec_call_function_single);
+	pcpu_ec_call(pcpu_devices + cpu, ec_call_function);
 }
 
 #ifndef CONFIG_64BIT
-- 
1.7.10.4


  parent reply	other threads:[~2015-01-23  5:36 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23  5:36 [Resend Patch v4 00/16] Kill SMP single function call interrupt Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 01/16] smp, alpha: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 02/16] smp, ARM: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 03/16] smp, ARM64: " Jiang Liu
2015-01-23 18:10   ` Catalin Marinas
2015-01-23  5:36 ` [Resend Patch v4 04/16] smp, IA64: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 05/16] smp, m32r: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 06/16] smp, mn10300: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 07/16] smp, mn10300: Enable arch_send_call_function_ipi_mask() Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 08/16] smp, sh: Kill SMP single function call interrupt Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 09/16] smp, sparc64: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 10/16] smp, sparc: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 11/16] smp, x86, xen: " Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 12/16] smp, x86: " Jiang Liu
2015-01-23  8:53   ` Peter Zijlstra
2015-01-23 11:20   ` Borislav Petkov
2015-01-23  5:36 ` [Resend Patch v4 13/16] smp, tile: " Jiang Liu
2015-01-23  5:36 ` Jiang Liu [this message]
2015-01-23  6:54   ` [Resend Patch v4 14/16] smp, s390: " Heiko Carstens
2015-01-23  9:21     ` Jiang Liu
2015-01-23  9:32       ` Heiko Carstens
2015-01-23  5:36 ` [Resend Patch v4 15/16] smp: Cleanup unsued generic_smp_call_function_single_interrupt() Jiang Liu
2015-01-23  5:36 ` [Resend Patch v4 16/16] smp, trivial: Remove unused function prototype from smp_boot.h Jiang Liu
2015-01-24 19:28 ` [Resend Patch v4 00/16] Kill SMP single function call interrupt Thomas Gleixner
2015-01-26  2:13   ` Jiang Liu

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