linux-kernel - [RFC kvmtool 21/31] init: Add last

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Date:   Fri, 27 Jan 2023 11:39:22 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     kvm@...r.kernel.org, kvmarm@...ts.linux.dev
Cc:     suzuki.poulose@....com,
        Alexandru Elisei <alexandru.elisei@....com>,
        Andrew Jones <andrew.jones@...ux.dev>,
        Christoffer Dall <christoffer.dall@....com>,
        Fuad Tabba <tabba@...gle.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Joey Gouly <Joey.Gouly@....com>, Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Quentin Perret <qperret@...gle.com>,
        Steven Price <steven.price@....com>,
        Thomas Huth <thuth@...hat.com>, Will Deacon <will@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>, linux-coco@...ts.linux.dev,
        kvmarm@...ts.cs.columbia.edu, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [RFC kvmtool 21/31] init: Add last_{init, exit} list macros

From: Alexandru Elisei <alexandru.elisei@....com>

Add a last_init macro for constructor functions that will be executed last
in the initialization process. Add a symmetrical macro, last_exit, for
destructor functions that will be the last to be executed when kvmtool
exits.

The list priority for the late_{init, exit} macros has been bumped down a
spot, but their relative priority remains unchanged, to keep the same size
for the init_lists and exit_lists.

Signed-off-by: Alexandru Elisei <alexandru.elisei@....com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 include/kvm/util-init.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/kvm/util-init.h b/include/kvm/util-init.h
index 13d4f04d..e6a0e169 100644
--- a/include/kvm/util-init.h
+++ b/include/kvm/util-init.h
@@ -39,7 +39,8 @@ static void __attribute__ ((constructor)) __init__##cb(void)		\
 #define dev_init(cb) __init_list_add(cb, 5)
 #define virtio_dev_init(cb) __init_list_add(cb, 6)
 #define firmware_init(cb) __init_list_add(cb, 7)
-#define late_init(cb) __init_list_add(cb, 9)
+#define late_init(cb) __init_list_add(cb, 8)
+#define last_init(cb) __init_list_add(cb, 9)
 
 #define core_exit(cb) __exit_list_add(cb, 0)
 #define base_exit(cb) __exit_list_add(cb, 2)
@@ -47,5 +48,6 @@ static void __attribute__ ((constructor)) __init__##cb(void)		\
 #define dev_exit(cb) __exit_list_add(cb, 5)
 #define virtio_dev_exit(cb) __exit_list_add(cb, 6)
 #define firmware_exit(cb) __exit_list_add(cb, 7)
-#define late_exit(cb) __exit_list_add(cb, 9)
+#define late_exit(cb) __exit_list_add(cb, 8)
+#define last_exit(cb) __exit_list_add(cb, 9)
 #endif
-- 
2.34.1