linux-kernel - [PATCH v1] intel_idle: Add __init annotation to matchup_vm_state_with

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Date:   Tue, 27 Jun 2023 19:50:48 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>
Subject: [PATCH v1] intel_idle: Add __init annotation to matchup_vm_state_with_baremetal()

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

The caller of (recently added) matchup_vm_state_with_baremetal() is an
__init function and it uses some __initdata data structures, so add the
__init annotation to it for consistency.

This addresses the following build warnings:

WARNING: modpost: vmlinux: section mismatch in reference: matchup_vm_state_with_baremetal+0x51 (section: .text) -> intel_idle_max_cstate_reached (section: .init.text)
WARNING: modpost: vmlinux: section mismatch in reference: matchup_vm_state_with_baremetal+0x62 (section: .text) -> cpuidle_state_table (section: .init.data)
WARNING: modpost: vmlinux: section mismatch in reference: matchup_vm_state_with_baremetal+0x79 (section: .text) -> icpu (section: .init.data)

Fixes: 0fac214bb75e ("intel_idle: Add a "Long HLT" C1 state for the VM guest mode")
Reported-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/idle/intel_idle.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-pm/drivers/idle/intel_idle.c
===================================================================
--- linux-pm.orig/drivers/idle/intel_idle.c
+++ linux-pm/drivers/idle/intel_idle.c
@@ -2147,7 +2147,7 @@ static void __init intel_idle_cpuidle_de
  * All our short idle states are dominated by vmexit/vmenter latencies,
  * not the underlying hardware latencies so we keep our values for these.
  */
-static void matchup_vm_state_with_baremetal(void)
+static void __init matchup_vm_state_with_baremetal(void)
 {
 	int cstate;