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From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: thuth@redhat.com, linux-s390@vger.kernel.org, david@redhat.com,
	borntraeger@de.ibm.com, cohuck@redhat.com
Subject: [PATCH v2 06/10] s390x: smp: Remove unneeded cpu loops
Date: Thu, 23 Apr 2020 05:10:09 -0400	[thread overview]
Message-ID: <20200423091013.11587-7-frankja@linux.ibm.com> (raw)
In-Reply-To: <20200423091013.11587-1-frankja@linux.ibm.com>

Now that we have a loop which is executed after we return from the
main function of a secondary cpu, we can remove the surplus loops.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
---
 s390x/smp.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/s390x/smp.c b/s390x/smp.c
index a8e3dd7..7462211 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -35,15 +35,9 @@ static void set_flag(int val)
 	mb();
 }
 
-static void cpu_loop(void)
-{
-	for (;;) {}
-}
-
 static void test_func(void)
 {
 	set_flag(1);
-	cpu_loop();
 }
 
 static void test_start(void)
@@ -292,7 +286,7 @@ int main(void)
 
 	/* Setting up the cpu to give it a stack and lowcore */
 	psw.mask = extract_psw_mask();
-	psw.addr = (unsigned long)cpu_loop;
+	psw.addr = (unsigned long)test_func;
 	smp_cpu_setup(1, psw);
 	smp_cpu_stop(1);
 
-- 
2.25.1

  parent reply	other threads:[~2020-04-23  9:10 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-23  9:10 [PATCH v2 00/10] s390x: smp: Improve smp code part 2 Janosch Frank
2020-04-23  9:10 ` [PATCH v2 01/10] s390x: smp: Test all CRs on initial reset Janosch Frank
2020-04-23 15:39   ` David Hildenbrand
2020-04-24  9:33     ` [PATCH v3] " Janosch Frank
2020-04-24 10:03       ` David Hildenbrand
2020-04-23  9:10 ` [PATCH v2 02/10] s390x: smp: Dirty fpc before initial reset test Janosch Frank
2020-04-23  9:10 ` [PATCH v2 03/10] s390x: smp: Test stop and store status on a running and stopped cpu Janosch Frank
2020-04-23 16:03   ` David Hildenbrand
2020-04-23  9:10 ` [PATCH v2 04/10] s390x: smp: Test local interrupts after cpu reset Janosch Frank
2020-04-24 10:07   ` David Hildenbrand
2020-04-24 11:51     ` Janosch Frank
2020-04-23  9:10 ` [PATCH v2 05/10] s390x: smp: Loop if secondary cpu returns into cpu setup again Janosch Frank
2020-04-24 10:08   ` David Hildenbrand
2020-04-23  9:10 ` Janosch Frank [this message]
2020-04-23  9:10 ` [PATCH v2 07/10] s390x: smp: Use full PSW to bringup new cpu Janosch Frank
2020-04-24 10:09   ` David Hildenbrand
2020-04-24 11:16     ` Janosch Frank
2020-04-24 11:23       ` David Hildenbrand
2020-04-24 11:31         ` Janosch Frank
2020-04-23  9:10 ` [PATCH v2 08/10] s390x: smp: Wait for sigp completion Janosch Frank
2020-04-24 10:11   ` David Hildenbrand
2020-04-24 11:40     ` Janosch Frank
2020-04-29  8:57       ` Janosch Frank
2020-04-29  9:06         ` David Hildenbrand
2020-04-29  9:37           ` Janosch Frank
2020-04-29  9:55             ` David Hildenbrand
2020-04-29 11:21               ` Janosch Frank
2020-04-29 11:47                 ` David Hildenbrand
2020-04-29 12:09                   ` Janosch Frank
2020-04-29 12:15                     ` David Hildenbrand
2020-04-23  9:10 ` [PATCH v2 09/10] s390x: smp: Add restart when running test Janosch Frank
2020-04-24 10:13   ` David Hildenbrand
2020-04-23  9:10 ` [PATCH v2 10/10] s390x: Fix library constant definitions Janosch Frank
2020-04-24 10:13   ` David Hildenbrand

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