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dpdk: Backport to fix build failure for kernel v5.9

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kernel/linux/kni/kni_dev.h:104:8: error: too many arguments to function 'get_user_pages_remote'
  104 |  ret = get_user_pages_remote(tsk, tsk->mm, iova, 1,
      |        ^~~~~~~~~~~~~~~~~~~~~

Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
This commit is contained in:
He Zhe 2020-09-23 11:15:44 +08:00 committed by Anuj Mittal
parent 25e754eaf1
commit 7a9ee23de7
2 changed files with 56 additions and 0 deletions
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54
recipes-extended/dpdk/dpdk/0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch Normal file
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@ -0,0 +1,54 @@
From 7e0102a6d29732b92c25ca4793d641ce6c98e95a Mon Sep 17 00:00:00 2001
From: He Zhe <zhe.he@windriver.com>
Date: Wed, 23 Sep 2020 11:00:03 +0800
Subject: [PATCH] Starting from Linux 5.9 'get_user_pages_remote()' API doesn't
get 'struct task_struct' parameter: commit 64019a2e467a ("mm/gup: remove
task_struct pointer for all gup code")
The change reflected to the KNI with version check.
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Upstream-Status: Backport [https://patches.dpdk.org/patch/75577/]
Signed-off-by: He Zhe <zhe.he@windriver.com>
---
kernel/linux/kni/compat.h | 4 ++++
kernel/linux/kni/kni_dev.h | 5 +++++
2 files changed, 9 insertions(+)
diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
index 9ee45dbf6..d515b2766 100644
--- a/kernel/linux/kni/compat.h
+++ b/kernel/linux/kni/compat.h
@@ -134,3 +134,7 @@
#if KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE
#define HAVE_TX_TIMEOUT_TXQUEUE
#endif
+
+#if KERNEL_VERSION(5, 9, 0) > LINUX_VERSION_CODE
+#define HAVE_TSK_IN_GUP
+#endif
diff --git a/kernel/linux/kni/kni_dev.h b/kernel/linux/kni/kni_dev.h
index ca5f92a47..c15da311b 100644
--- a/kernel/linux/kni/kni_dev.h
+++ b/kernel/linux/kni/kni_dev.h
@@ -101,8 +101,13 @@ static inline phys_addr_t iova_to_phys(struct task_struct *tsk,
offset = iova & (PAGE_SIZE - 1);
/* Read one page struct info */
+#ifdef HAVE_TSK_IN_GUP
ret = get_user_pages_remote(tsk, tsk->mm, iova, 1,
FOLL_TOUCH, &page, NULL, NULL);
+#else
+ ret = get_user_pages_remote(tsk->mm, iova, 1,
+ FOLL_TOUCH, &page, NULL, NULL);
+#endif
if (ret < 0)
return 0;
--
2.17.1

2
recipes-extended/dpdk/dpdk_19.11.3.bb
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@ -12,6 +12,8 @@ LIC_FILES_CHKSUM = "file://license/gpl-2.0.txt;md5=b234ee4d69f5fce4486a80fdaf4a4
file://license/lgpl-2.1.txt;md5=4b54a1fd55a448865a0b32d41598759d \
file://license/bsd-3-clause.txt;md5=0f00d99239d922ffd13cabef83b33444"
SRC_URI += "file://0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch"
do_install_append () {
# Remove the unneeded dir
rm -rf ${D}/${INSTALL_PATH}/${RTE_TARGET}/app