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Limit the number of bits to the maximum number of cpus a machine can have. possible_cpu_mask typically will have more bits set than a machine may physically have. This results in wasted memory during per-cpu memory allocations, if the possible mask contains more cpus than physically possible for a given configuration. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* Copyright IBM Corp. 2007
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* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
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*/
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#ifndef _ASM_S390_SCLP_H
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#define _ASM_S390_SCLP_H
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#include <linux/types.h>
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#include <asm/chpid.h>
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#include <asm/cpu.h>
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#define SCLP_CHP_INFO_MASK_SIZE 32
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struct sclp_chp_info {
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u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
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u8 standby[SCLP_CHP_INFO_MASK_SIZE];
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u8 configured[SCLP_CHP_INFO_MASK_SIZE];
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};
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#define LOADPARM_LEN 8
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struct sclp_ipl_info {
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int is_valid;
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int has_dump;
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char loadparm[LOADPARM_LEN];
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};
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struct sclp_cpu_entry {
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u8 address;
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u8 reserved0[13];
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u8 type;
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u8 reserved1;
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} __attribute__((packed));
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struct sclp_cpu_info {
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unsigned int configured;
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unsigned int standby;
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unsigned int combined;
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int has_cpu_type;
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struct sclp_cpu_entry cpu[MAX_CPU_ADDRESS + 1];
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};
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int sclp_get_cpu_info(struct sclp_cpu_info *info);
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int sclp_cpu_configure(u8 cpu);
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int sclp_cpu_deconfigure(u8 cpu);
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unsigned long long sclp_get_rnmax(void);
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unsigned long long sclp_get_rzm(void);
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unsigned int sclp_get_max_cpu(void);
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int sclp_sdias_blk_count(void);
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int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
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int sclp_chp_configure(struct chp_id chpid);
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int sclp_chp_deconfigure(struct chp_id chpid);
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int sclp_chp_read_info(struct sclp_chp_info *info);
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void sclp_get_ipl_info(struct sclp_ipl_info *info);
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bool __init sclp_has_linemode(void);
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bool __init sclp_has_vt220(void);
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bool sclp_has_sprp(void);
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int sclp_pci_configure(u32 fid);
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int sclp_pci_deconfigure(u32 fid);
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int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode);
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unsigned long sclp_get_hsa_size(void);
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void sclp_early_detect(void);
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#endif /* _ASM_S390_SCLP_H */
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