On 04/02/2015 10:44, Christian Borntraeger wrote:
> From: Ekaterina Tumanova <[email protected]>
>
> Read the additional data fields (Extended Name and UUID) from the
> 1KB block returned by the STSI command and reflect this information in
> the /proc/sysinfo file accordingly
>
> Signed-off-by: Ekaterina Tumanova <[email protected]>
> Reviewed-by: David Hildenbrand <[email protected]>
> Reviewed-by: Cornelia Huck <[email protected]>
> Acked-by: Heiko Carstens <[email protected]>
> Signed-off-by: Christian Borntraeger <[email protected]>
Why should this go in via KVM? :)
Paolo
> ---
> arch/s390/include/asm/sysinfo.h | 10 +++++++---
> arch/s390/kernel/sysinfo.c | 29 +++++++++++++++++++++++++++++
> 2 files changed, 36 insertions(+), 3 deletions(-)
>
> diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h
> index f92428e..9f8f2b5 100644
> --- a/arch/s390/include/asm/sysinfo.h
> +++ b/arch/s390/include/asm/sysinfo.h
> @@ -15,6 +15,7 @@
> #define __ASM_S390_SYSINFO_H
>
> #include <asm/bitsperlong.h>
> +#include <linux/uuid.h>
>
> struct sysinfo_1_1_1 {
> unsigned char p:1;
> @@ -112,10 +113,13 @@ struct sysinfo_3_2_2 {
> char name[8];
> unsigned int caf;
> char cpi[16];
> - char reserved_1[24];
> -
> + char reserved_1[3];
> + char ext_name_encoding;
> + unsigned int reserved_2;
> + uuid_be uuid;
> } vm[8];
> - char reserved_544[3552];
> + char reserved_3[1504];
> + char ext_names[8][256];
> };
>
> extern int topology_max_mnest;
> diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
> index 811f542..cebab77 100644
> --- a/arch/s390/kernel/sysinfo.c
> +++ b/arch/s390/kernel/sysinfo.c
> @@ -196,6 +196,33 @@ static void stsi_2_2_2(struct seq_file *m, struct
> sysinfo_2_2_2 *info)
> seq_printf(m, "LPAR CPUs Shared: %d\n", info->cpus_shared);
> }
>
> +static void print_ext_name(struct seq_file *m, int lvl,
> + struct sysinfo_3_2_2 *info)
> +{
> + if (info->vm[lvl].ext_name_encoding == 0)
> + return;
> + if (info->ext_names[lvl][0] == 0)
> + return;
> + switch (info->vm[lvl].ext_name_encoding) {
> + case 1: /* EBCDIC */
> + EBCASC(info->ext_names[lvl], sizeof(info->ext_names[lvl]));
> + break;
> + case 2: /* UTF-8 */
> + break;
> + default:
> + return;
> + }
> + seq_printf(m, "VM%02d Extended Name: %-.256s\n", lvl,
> + info->ext_names[lvl]);
> +}
> +
> +static void print_uuid(struct seq_file *m, int i, struct sysinfo_3_2_2 *info)
> +{
> + if (!memcmp(&info->vm[i].uuid, &NULL_UUID_BE, sizeof(uuid_be)))
> + return;
> + seq_printf(m, "VM%02d UUID: %pUb\n", i, &info->vm[i].uuid);
> +}
> +
> static void stsi_3_2_2(struct seq_file *m, struct sysinfo_3_2_2 *info)
> {
> int i;
> @@ -213,6 +240,8 @@ static void stsi_3_2_2(struct seq_file *m, struct
> sysinfo_3_2_2 *info)
> seq_printf(m, "VM%02d CPUs Configured: %d\n", i,
> info->vm[i].cpus_configured);
> seq_printf(m, "VM%02d CPUs Standby: %d\n", i,
> info->vm[i].cpus_standby);
> seq_printf(m, "VM%02d CPUs Reserved: %d\n", i,
> info->vm[i].cpus_reserved);
> + print_ext_name(m, i, info);
> + print_uuid(m, i, info);
> }
> }
>
>
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