* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-20 15:22 ` [PATCH v2] " Robert Richter
@ 2019-03-20 22:02 ` Ard Biesheuvel
2019-03-21 9:39 ` Robert Richter
2019-03-27 18:53 ` Ard Biesheuvel
2019-03-28 7:42 ` Robert Richter
2 siblings, 1 reply; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-20 22:02 UTC (permalink / raw)
To: Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
>
> 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@marvell.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.
>
I don't understand the last sentence - we do not need to call
dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
right? Doesn't that wipe the arch description we set based on the DT
machine name?
> Signed-off-by: Robert Richter <rrichter@marvell.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
>
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-20 22:02 ` Ard Biesheuvel
@ 2019-03-21 9:39 ` Robert Richter
2019-03-21 9:51 ` Ard Biesheuvel
0 siblings, 1 reply; 15+ messages in thread
From: Robert Richter @ 2019-03-21 9:39 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> >
> > 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@marvell.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.
> >
>
> I don't understand the last sentence - we do not need to call
> dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> right? Doesn't that wipe the arch description we set based on the DT
> machine name?
No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
nothing changed. But for x86 and ia64 we no longer call dump_stack_
set_arch_desc() in this case. This is ok since both strings,
dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
copying one to the other does not change anything.
-Robert
>
> > Signed-off-by: Robert Richter <rrichter@marvell.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
> >
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-21 9:39 ` Robert Richter
@ 2019-03-21 9:51 ` Ard Biesheuvel
2019-03-21 10:08 ` Robert Richter
2019-03-21 10:11 ` Jean Delvare
0 siblings, 2 replies; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-21 9:51 UTC (permalink / raw)
To: Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Thu, 21 Mar 2019 at 10:39, Robert Richter <rrichter@marvell.com> wrote:
>
> On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > >
> > > 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@marvell.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.
> > >
> >
> > I don't understand the last sentence - we do not need to call
> > dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> > right? Doesn't that wipe the arch description we set based on the DT
> > machine name?
>
> No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
> nothing changed. But for x86 and ia64 we no longer call dump_stack_
> set_arch_desc() in this case. This is ok since both strings,
> dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
> copying one to the other does not change anything.
>
Ah, of course. Apologies for not reading more carefully.
I'll take this patch via the EFI tree.
It seems to me though that the previous patch makes the memdev_walk()
call unconditional for ARM, and this change subsequently makes it
dependent on dmi_available. Should we fix that?
> >
> > > Signed-off-by: Robert Richter <rrichter@marvell.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
> > >
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-21 9:51 ` Ard Biesheuvel
@ 2019-03-21 10:08 ` Robert Richter
2019-03-21 10:09 ` Ard Biesheuvel
2019-03-21 10:11 ` Jean Delvare
1 sibling, 1 reply; 15+ messages in thread
From: Robert Richter @ 2019-03-21 10:08 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On 21.03.19 10:51:34, Ard Biesheuvel wrote:
> On Thu, 21 Mar 2019 at 10:39, Robert Richter <rrichter@marvell.com> wrote:
> >
> > On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> > > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > > >
> > > > 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@marvell.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.
> > > >
> > >
> > > I don't understand the last sentence - we do not need to call
> > > dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> > > right? Doesn't that wipe the arch description we set based on the DT
> > > machine name?
> >
> > No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
> > nothing changed. But for x86 and ia64 we no longer call dump_stack_
> > set_arch_desc() in this case. This is ok since both strings,
> > dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
> > copying one to the other does not change anything.
> >
>
> Ah, of course. Apologies for not reading more carefully.
>
> I'll take this patch via the EFI tree.
>
> It seems to me though that the previous patch makes the memdev_walk()
> call unconditional for ARM, and this change subsequently makes it
> dependent on dmi_available. Should we fix that?
The first patch has the check in memdev_walk(). So that is looking
good. The check is then moved to dmi_setup() in the 2nd patch.
Thanks for handling this.
-Robert
>
> > >
> > > > Signed-off-by: Robert Richter <rrichter@marvell.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
> > > >
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-21 10:08 ` Robert Richter
@ 2019-03-21 10:09 ` Ard Biesheuvel
0 siblings, 0 replies; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-21 10:09 UTC (permalink / raw)
To: Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Thu, 21 Mar 2019 at 11:08, Robert Richter <rrichter@marvell.com> wrote:
>
> On 21.03.19 10:51:34, Ard Biesheuvel wrote:
> > On Thu, 21 Mar 2019 at 10:39, Robert Richter <rrichter@marvell.com> wrote:
> > >
> > > On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> > > > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > > > >
> > > > > 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@marvell.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.
> > > > >
> > > >
> > > > I don't understand the last sentence - we do not need to call
> > > > dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> > > > right? Doesn't that wipe the arch description we set based on the DT
> > > > machine name?
> > >
> > > No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
> > > nothing changed. But for x86 and ia64 we no longer call dump_stack_
> > > set_arch_desc() in this case. This is ok since both strings,
> > > dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
> > > copying one to the other does not change anything.
> > >
> >
> > Ah, of course. Apologies for not reading more carefully.
> >
> > I'll take this patch via the EFI tree.
> >
> > It seems to me though that the previous patch makes the memdev_walk()
> > call unconditional for ARM, and this change subsequently makes it
> > dependent on dmi_available. Should we fix that?
>
> The first patch has the check in memdev_walk(). So that is looking
> good. The check is then moved to dmi_setup() in the 2nd patch.
>
OK, that works for me.
> Thanks for handling this.
>
Thanks for the contribution.
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-21 9:51 ` Ard Biesheuvel
2019-03-21 10:08 ` Robert Richter
@ 2019-03-21 10:11 ` Jean Delvare
2019-03-21 10:14 ` Ard Biesheuvel
1 sibling, 1 reply; 15+ messages in thread
From: Jean Delvare @ 2019-03-21 10:11 UTC (permalink / raw)
To: Ard Biesheuvel, Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Marcin Benka, linux-ia64,
linux-kernel, linux-efi
On Thu, 2019-03-21 at 10:51 +0100, Ard Biesheuvel wrote:
> On Thu, 21 Mar 2019 at 10:39, Robert Richter <rrichter@marvell.com> wrote:
> >
> > On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> > > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > > >
> > > > 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@marvell.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.
> > > >
> > >
> > > I don't understand the last sentence - we do not need to call
> > > dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> > > right? Doesn't that wipe the arch description we set based on the DT
> > > machine name?
> >
> > No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
> > nothing changed. But for x86 and ia64 we no longer call dump_stack_
> > set_arch_desc() in this case. This is ok since both strings,
> > dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
> > copying one to the other does not change anything.
> >
>
> Ah, of course. Apologies for not reading more carefully.
>
> I'll take this patch via the EFI tree.
I like the idea. If this is not going through my tree then:
Reviewed-by: Jean Delvare <jdelvare@suse.de>
--
Jean Delvare
SUSE L3 Support
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-21 10:11 ` Jean Delvare
@ 2019-03-21 10:14 ` Ard Biesheuvel
0 siblings, 0 replies; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-21 10:14 UTC (permalink / raw)
To: Jean Delvare
Cc: Robert Richter, Tony Luck, Fenghua Yu, Thomas Gleixner,
Ingo Molnar, Borislav Petkov, H. Peter Anvin, x86, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Thu, 21 Mar 2019 at 11:11, Jean Delvare <jdelvare@suse.de> wrote:
>
> On Thu, 2019-03-21 at 10:51 +0100, Ard Biesheuvel wrote:
> > On Thu, 21 Mar 2019 at 10:39, Robert Richter <rrichter@marvell.com> wrote:
> > >
> > > On 20.03.19 23:02:09, Ard Biesheuvel wrote:
> > > > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > > > >
> > > > > 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@marvell.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.
> > > > >
> > > >
> > > > I don't understand the last sentence - we do not need to call
> > > > dump_stack_set_arch_desc() when !dmi_available, but we do so anyway,
> > > > right? Doesn't that wipe the arch description we set based on the DT
> > > > machine name?
> > >
> > > No, in dmi_setup() we exit early when !dmi_available. So for arm/arm64
> > > nothing changed. But for x86 and ia64 we no longer call dump_stack_
> > > set_arch_desc() in this case. This is ok since both strings,
> > > dmi_ids_string and dump_stack_arch_desc_str, are initialized zero and
> > > copying one to the other does not change anything.
> > >
> >
> > Ah, of course. Apologies for not reading more carefully.
> >
> > I'll take this patch via the EFI tree.
>
> I like the idea. If this is not going through my tree then:
>
> Reviewed-by: Jean Delvare <jdelvare@suse.de>
>
Thanks Jean.
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-20 15:22 ` [PATCH v2] " Robert Richter
2019-03-20 22:02 ` Ard Biesheuvel
@ 2019-03-27 18:53 ` Ard Biesheuvel
2019-03-28 7:55 ` Robert Richter
2019-03-28 7:42 ` Robert Richter
2 siblings, 1 reply; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-27 18:53 UTC (permalink / raw)
To: Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
>
> 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.
>
Could you please resend this as a proper patch? I am having trouble applying it.
>
> -- >8 --
> From: Robert Richter <rrichter@marvell.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@marvell.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
>
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-27 18:53 ` Ard Biesheuvel
@ 2019-03-28 7:55 ` Robert Richter
2019-03-28 7:57 ` Ard Biesheuvel
0 siblings, 1 reply; 15+ messages in thread
From: Robert Richter @ 2019-03-28 7:55 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On 27.03.19 19:53:47, Ard Biesheuvel wrote:
> On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> >
> > 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.
> >
>
> Could you please resend this as a proper patch? I am having trouble applying it.
I just resent the patch. But this worked for me:
$ wget -nd -O - https://lore.kernel.org/patchwork/patch/1052718/mbox/ | git am -smc -3 -
Not sure what was wrong.
Thanks,
-Robert
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-28 7:55 ` Robert Richter
@ 2019-03-28 7:57 ` Ard Biesheuvel
0 siblings, 0 replies; 15+ messages in thread
From: Ard Biesheuvel @ 2019-03-28 7:57 UTC (permalink / raw)
To: Robert Richter
Cc: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare, Marcin Benka,
linux-ia64, linux-kernel, linux-efi
On Thu, 28 Mar 2019 at 08:55, Robert Richter <rrichter@marvell.com> wrote:
>
> On 27.03.19 19:53:47, Ard Biesheuvel wrote:
> > On Wed, 20 Mar 2019 at 16:23, Robert Richter <rrichter@marvell.com> wrote:
> > >
> > > 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.
> > >
> >
> > Could you please resend this as a proper patch? I am having trouble applying it.
>
> I just resent the patch. But this worked for me:
>
> $ wget -nd -O - https://lore.kernel.org/patchwork/patch/1052718/mbox/ | git am -smc -3 -
>
> Not sure what was wrong.
>
Thanks. Not sure either, but I managed to apply it now, with
s/io64/ia64/, and Jean's R-b added.
--
Ard.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [PATCH v2] efi: Unify dmi setup code over architectures arm/arm64, io64 and x86
2019-03-20 15:22 ` [PATCH v2] " Robert Richter
2019-03-20 22:02 ` Ard Biesheuvel
2019-03-27 18:53 ` Ard Biesheuvel
@ 2019-03-28 7:42 ` Robert Richter
2 siblings, 0 replies; 15+ messages in thread
From: Robert Richter @ 2019-03-28 7:42 UTC (permalink / raw)
To: Tony Luck, Fenghua Yu, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, H. Peter Anvin, x86, Jean Delvare,
Ard Biesheuvel
Cc: Marcin Benka, Robert Richter, linux-ia64, linux-kernel, linux-efi
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@marvell.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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