libhugetlbfs/SOURCES/0004-tests-task-size-overrun-Make-test-faster-on-powerpc6.patch
2021-09-09 20:20:33 +00:00

53 lines
2.1 KiB
Diff

From 2f38664f81e1877f81b16ed327b540d69d175a5b Mon Sep 17 00:00:00 2001
Message-Id: <2f38664f81e1877f81b16ed327b540d69d175a5b.1566225007.git.aquini@redhat.com>
In-Reply-To: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
References: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
From: Sandipan Das <sandipan@linux.ibm.com>
Date: Thu, 15 Aug 2019 13:08:31 +0530
Subject: [RHEL7 PATCH 04/31] tests: task-size-overrun: Make test faster on
powerpc64
As of now, powerpc64 supports 64TB, 128TB, 512TB, 1PB, 2PB and
4PB user address space sizes with 4TB being the default for the
newer kernels. With the relatively conservative increments that
this test uses to find the task size, it takes a very long time
but this can be made faster by also increasing the increment
factor in steps of the different supported task sizes.
Fixes: 02df38e ("Defined task size value to be 512T if it is more that 64Tb.")
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Eric B Munson <emunson@mgebm.net>
Signed-off-by: Rafael Aquini <aquini@redhat.com>
---
tests/task-size-overrun.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/tests/task-size-overrun.c b/tests/task-size-overrun.c
index dc9ce0e..914ef65 100644
--- a/tests/task-size-overrun.c
+++ b/tests/task-size-overrun.c
@@ -83,8 +83,18 @@ static unsigned long find_task_size(void)
munmap(p, getpagesize());
addr += getpagesize();
#if defined(__powerpc64__)
- if (addr > (1UL << 46) && addr < (1UL << 49))
- addr = 1UL << 49;
+ if (addr > (1UL << 46) && addr < (1UL << 47))
+ addr = 1UL << 47; /* 64TB */
+ else if (addr > (1UL << 47) && addr < (1UL << 48))
+ addr = 1UL << 48; /* 128TB */
+ else if (addr > (1UL << 48) && addr < (1UL << 49))
+ addr = 1UL << 49; /* 512TB */
+ else if (addr > (1UL << 49) && addr < (1UL << 50))
+ addr = 1UL << 50; /* 1PB */
+ else if (addr > (1UL << 50) && addr < (1UL << 51))
+ addr = 1UL << 51; /* 2PB */
+ else if (addr > (1UL << 51) && addr < (1UL << 52))
+ addr = 1UL << 52; /* 4PB */
#endif
#if defined(__s390x__)
if (addr > (1UL << 42) && addr < (1UL << 53))
--
1.8.3.1