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Message-ID: <20190320152240.2eun63wqkbqmuqkg@rric.localdomain>
Date: Wed, 20 Mar 2019 15:22:46 +0000
From: Robert Richter <rrichter@...vell.com>
To: Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
"Thomas Gleixner" <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"Borislav Petkov" <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>,
"x86@...nel.org" <x86@...nel.org>,
Jean Delvare <jdelvare@...e.com>,
Ard Biesheuvel <ard.biesheuvel@...aro.org>
CC: Marcin Benka <mbenka@...vell.com>,
"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>
Subject: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64,
io64 and x86
On 20.03.19 14:16:07, Robert Richter wrote:
> On 20.03.19 13:05:37, Robert Richter wrote:
> > @@ -167,6 +167,7 @@ static int __init arm_dmi_init(void)
> > * itself, depends on dmi_scan_machine() having been called already.
> > */
> > dmi_scan_machine();
> > + dmi_memdev_walk();
> > if (dmi_available)
> > dmi_set_dump_stack_arch_desc();
> > return 0;
>
> After
>
> [PATCH] efi/arm: Show SMBIOS bank/device location in cper and
> ghes error logs
>
> wents in for arm/arm64, we can unify the code. See patch below.
V2 with the fix in arm_dmi_init() below.
-Robert
-- >8 --
From: Robert Richter <rrichter@...vell.com>
Subject: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64,
io64 and x86
All architectures (arm/arm64, io64 and x86) do the same here, so unify
the code.
Note: We do not need to call dump_stack_set_arch_desc() in case of
!dmi_available. Both strings, dmi_ids_string and dump_stack_arch_
desc_str are initialized zero and thus nothing would change.
Signed-off-by: Robert Richter <rrichter@...vell.com>
---
arch/ia64/kernel/setup.c | 4 +---
arch/x86/kernel/setup.c | 6 ++----
drivers/firmware/dmi_scan.c | 28 +++++++++++++++-------------
drivers/firmware/efi/arm-runtime.c | 7 ++-----
include/linux/dmi.h | 8 ++------
5 files changed, 22 insertions(+), 31 deletions(-)
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 583a3746d70b..c9cfa760cd57 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -1058,9 +1058,7 @@ check_bugs (void)
static int __init run_dmi_scan(void)
{
- dmi_scan_machine();
- dmi_memdev_walk();
- dmi_set_dump_stack_arch_desc();
+ dmi_setup();
return 0;
}
core_initcall(run_dmi_scan);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3d872a527cd9..3773905cd2c1 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1005,13 +1005,11 @@ void __init setup_arch(char **cmdline_p)
if (efi_enabled(EFI_BOOT))
efi_init();
- dmi_scan_machine();
- dmi_memdev_walk();
- dmi_set_dump_stack_arch_desc();
+ dmi_setup();
/*
* VMware detection requires dmi to be available, so this
- * needs to be done after dmi_scan_machine(), for the boot CPU.
+ * needs to be done after dmi_setup(), for the boot CPU.
*/
init_hypervisor_platform();
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 099d83e4e910..fae2d5c43314 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -416,11 +416,8 @@ static void __init save_mem_devices(const struct dmi_header *dm, void *v)
nr++;
}
-void __init dmi_memdev_walk(void)
+static void __init dmi_memdev_walk(void)
{
- if (!dmi_available)
- return;
-
if (dmi_walk_early(count_mem_devices) == 0 && dmi_memdev_nr) {
dmi_memdev = dmi_alloc(sizeof(*dmi_memdev) * dmi_memdev_nr);
if (dmi_memdev)
@@ -614,7 +611,7 @@ static int __init dmi_smbios3_present(const u8 *buf)
return 1;
}
-void __init dmi_scan_machine(void)
+static void __init dmi_scan_machine(void)
{
char __iomem *p, *q;
char buf[32];
@@ -769,15 +766,20 @@ static int __init dmi_init(void)
subsys_initcall(dmi_init);
/**
- * dmi_set_dump_stack_arch_desc - set arch description for dump_stack()
+ * dmi_setup - scan and setup DMI system information
*
- * Invoke dump_stack_set_arch_desc() with DMI system information so that
- * DMI identifiers are printed out on task dumps. Arch boot code should
- * call this function after dmi_scan_machine() if it wants to print out DMI
- * identifiers on task dumps.
+ * Scan the DMI system information. This setups DMI identifiers
+ * (dmi_system_id) for printing it out on task dumps and prepares
+ * DIMM entry information (dmi_memdev_info) from the SMBIOS table
+ * for using this when reporting memory errors.
*/
-void __init dmi_set_dump_stack_arch_desc(void)
+void __init dmi_setup(void)
{
+ dmi_scan_machine();
+ if (!dmi_available)
+ return;
+
+ dmi_memdev_walk();
dump_stack_set_arch_desc("%s", dmi_ids_string);
}
@@ -841,7 +843,7 @@ static bool dmi_is_end_of_table(const struct dmi_system_id *dmi)
* returns non zero or we hit the end. Callback function is called for
* each successful match. Returns the number of matches.
*
- * dmi_scan_machine must be called before this function is called.
+ * dmi_setup must be called before this function is called.
*/
int dmi_check_system(const struct dmi_system_id *list)
{
@@ -871,7 +873,7 @@ EXPORT_SYMBOL(dmi_check_system);
* Walk the blacklist table until the first match is found. Return the
* pointer to the matching entry or NULL if there's no match.
*
- * dmi_scan_machine must be called before this function is called.
+ * dmi_setup must be called before this function is called.
*/
const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list)
{
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index 4a0dfe4ab829..e2ac5fa5531b 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -162,14 +162,11 @@ void efi_virtmap_unload(void)
static int __init arm_dmi_init(void)
{
/*
- * On arm64/ARM, DMI depends on UEFI, and dmi_scan_machine() needs to
+ * On arm64/ARM, DMI depends on UEFI, and dmi_setup() needs to
* be called early because dmi_id_init(), which is an arch_initcall
* itself, depends on dmi_scan_machine() having been called already.
*/
- dmi_scan_machine();
- dmi_memdev_walk();
- if (dmi_available)
- dmi_set_dump_stack_arch_desc();
+ dmi_setup();
return 0;
}
core_initcall(arm_dmi_init);
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index c46fdb36700b..8de8c4f15163 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -102,9 +102,7 @@ const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
extern const char * dmi_get_system_info(int field);
extern const struct dmi_device * dmi_find_device(int type, const char *name,
const struct dmi_device *from);
-extern void dmi_scan_machine(void);
-extern void dmi_memdev_walk(void);
-extern void dmi_set_dump_stack_arch_desc(void);
+extern void dmi_setup(void);
extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
extern int dmi_get_bios_year(void);
extern int dmi_name_in_vendors(const char *str);
@@ -122,9 +120,7 @@ static inline int dmi_check_system(const struct dmi_system_id *list) { return 0;
static inline const char * dmi_get_system_info(int field) { return NULL; }
static inline const struct dmi_device * dmi_find_device(int type, const char *name,
const struct dmi_device *from) { return NULL; }
-static inline void dmi_scan_machine(void) { return; }
-static inline void dmi_memdev_walk(void) { }
-static inline void dmi_set_dump_stack_arch_desc(void) { }
+static inline void dmi_setup(void) { }
static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
{
if (yearp)
--
2.20.1
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