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From: Jan Beulich <jbeulich@suse.com>
To: Juergen Gross <jgross@suse.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Subject: [PATCH 11/12] xen/pci-swiotlb: reduce visibility of symbols
Date: Tue, 7 Sep 2021 14:11:14 +0200	[thread overview]
Message-ID: <75591cef-95e8-c694-fd11-283800499e4e@suse.com> (raw)
In-Reply-To: <588b3e6d-2682-160c-468e-44ca4867a570@suse.com>

xen_swiotlb and pci_xen_swiotlb_init() are only used within the file
defining them, so make them static and remove the stubs. Otoh
pci_xen_swiotlb_detect() has a use (as function pointer) from the main
pci-swiotlb.c file - convert its stub to a #define to NULL.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/arch/x86/include/asm/xen/swiotlb-xen.h
+++ b/arch/x86/include/asm/xen/swiotlb-xen.h
@@ -3,14 +3,10 @@
 #define _ASM_X86_SWIOTLB_XEN_H
 
 #ifdef CONFIG_SWIOTLB_XEN
-extern int xen_swiotlb;
 extern int __init pci_xen_swiotlb_detect(void);
-extern void __init pci_xen_swiotlb_init(void);
 extern int pci_xen_swiotlb_init_late(void);
 #else
-#define xen_swiotlb (0)
-static inline int __init pci_xen_swiotlb_detect(void) { return 0; }
-static inline void __init pci_xen_swiotlb_init(void) { }
+#define pci_xen_swiotlb_detect NULL
 static inline int pci_xen_swiotlb_init_late(void) { return -ENXIO; }
 #endif
 
--- a/arch/x86/xen/pci-swiotlb-xen.c
+++ b/arch/x86/xen/pci-swiotlb-xen.c
@@ -18,7 +18,7 @@
 #endif
 #include <linux/export.h>
 
-int xen_swiotlb __read_mostly;
+static int xen_swiotlb __read_mostly;
 
 /*
  * pci_xen_swiotlb_detect - set xen_swiotlb to 1 if necessary
@@ -56,7 +56,7 @@ int __init pci_xen_swiotlb_detect(void)
 	return xen_swiotlb;
 }
 
-void __init pci_xen_swiotlb_init(void)
+static void __init pci_xen_swiotlb_init(void)
 {
 	if (xen_swiotlb) {
 		xen_swiotlb_init_early();


  parent reply	other threads:[~2021-09-07 12:11 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 12:03 [PATCH 00/12] swiotlb-xen: fixes and adjustments Jan Beulich
2021-09-07 12:04 ` [PATCH 01/12] swiotlb-xen: avoid double free Jan Beulich
2021-09-08  6:48   ` Christoph Hellwig
2021-09-10 22:55   ` Stefano Stabellini
2021-09-10 22:55     ` Stefano Stabellini
2021-09-07 12:04 ` [PATCH 02/12] swiotlb-xen: fix late init retry Jan Beulich
2021-09-08  6:50   ` Christoph Hellwig
2021-09-07 12:05 ` [PATCH 03/12] swiotlb-xen: maintain slab count properly Jan Beulich
2021-09-08  6:53   ` Christoph Hellwig
2021-09-10 23:10   ` Stefano Stabellini
2021-09-10 23:10     ` Stefano Stabellini
2021-09-07 12:05 ` [PATCH 04/12] swiotlb-xen: ensure to issue well-formed XENMEM_exchange requests Jan Beulich
2021-09-08  6:57   ` Christoph Hellwig
2021-09-08  9:16     ` Jan Beulich
2021-09-10 23:14   ` Stefano Stabellini
2021-09-10 23:14     ` Stefano Stabellini
2021-09-13  7:17     ` Jan Beulich
2021-09-13 20:31       ` Stefano Stabellini
2021-09-13 20:31         ` Stefano Stabellini
2021-09-14  9:11         ` Jan Beulich
2021-09-15  1:22           ` Stefano Stabellini
2021-09-15  1:22             ` Stefano Stabellini
2021-09-15  1:54             ` Stefano Stabellini
2021-09-15  1:54               ` Stefano Stabellini
2021-09-15  8:21               ` Jan Beulich
2021-09-07 12:05 ` [PATCH 05/12] swiotlb-xen: suppress certain init retries Jan Beulich
2021-09-08  6:58   ` Christoph Hellwig
2021-09-10 23:18   ` Stefano Stabellini
2021-09-10 23:18     ` Stefano Stabellini
2021-09-07 12:06 ` [PATCH 06/12] swiotlb-xen: limit " Jan Beulich
2021-09-08  7:00   ` Christoph Hellwig
2021-09-10 23:23   ` Stefano Stabellini
2021-09-10 23:23     ` Stefano Stabellini
2021-09-07 12:06 ` [PATCH 07/12] swiotlb-xen: drop leftover __ref Jan Beulich
2021-09-08  7:02   ` Christoph Hellwig
2021-09-10 23:24   ` Stefano Stabellini
2021-09-10 23:24     ` Stefano Stabellini
2021-09-07 12:07 ` [PATCH 08/12] swiotlb-xen: arrange to have buffer info logged Jan Beulich
2021-09-08  7:04   ` Christoph Hellwig
2021-09-10 23:26   ` Stefano Stabellini
2021-09-10 23:26     ` Stefano Stabellini
2021-09-07 12:07 ` [PATCH 09/12] swiotlb-xen: drop DEFAULT_NSLABS Jan Beulich
2021-09-08  7:06   ` Christoph Hellwig
2021-09-10 23:27   ` Stefano Stabellini
2021-09-10 23:27     ` Stefano Stabellini
2021-09-07 12:10 ` [PATCH 10/12] xen-pcifront: this module is PV-only Jan Beulich
2021-09-07 15:30   ` Bjorn Helgaas
2021-09-07 16:14     ` Jan Beulich
2021-09-07 16:38       ` Bjorn Helgaas
2021-09-10 23:34   ` Stefano Stabellini
2021-09-10 23:34     ` Stefano Stabellini
2021-09-07 12:11 ` Jan Beulich [this message]
2021-09-08  7:08   ` [PATCH 11/12] xen/pci-swiotlb: reduce visibility of symbols Christoph Hellwig
2021-09-07 12:13 ` [PATCH 12/12] swiotlb-xen: this is PV-only on x86 Jan Beulich
2021-09-08  7:14   ` Christoph Hellwig
2021-09-10 23:48     ` Stefano Stabellini
2021-09-10 23:48       ` Stefano Stabellini
2021-09-13  7:28       ` Jan Beulich
2021-09-13 20:54         ` Stefano Stabellini
2021-09-13 20:54           ` Stefano Stabellini
2021-09-13  7:51       ` Jan Beulich
2021-09-13 20:49         ` Stefano Stabellini
2021-09-13 20:49           ` Stefano Stabellini
2021-09-08 15:18 ` [PATCH 00/12] swiotlb-xen: fixes and adjustments Juergen Gross
2021-09-08 15:18   ` Juergen Gross via iommu
2021-09-14  8:30 ` Juergen Gross

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