mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 19:45:08 +07:00
7e75fc3ff4
Also support the diagnostic-sampling function in addition to the basic-sampling function. Diagnostic-sampling data entries contain hardware model specific sampling data and additional programs are required to analyze the data. To deliver diagnostic-sampling, as well, as basis-sampling data entries to user space, introduce support for sampling "raw data". If this particular perf sampling type (PERF_SAMPLE_RAW) is used, sampling data entries are copied to user space. External programs can then analyze these data. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
284 lines
8.5 KiB
C
284 lines
8.5 KiB
C
/*
|
|
* CPU-measurement facilities
|
|
*
|
|
* Copyright IBM Corp. 2012
|
|
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
|
|
* Jan Glauber <jang@linux.vnet.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License (version 2 only)
|
|
* as published by the Free Software Foundation.
|
|
*/
|
|
#ifndef _ASM_S390_CPU_MF_H
|
|
#define _ASM_S390_CPU_MF_H
|
|
|
|
#include <linux/errno.h>
|
|
#include <asm/facility.h>
|
|
|
|
#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */
|
|
#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */
|
|
#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */
|
|
#define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */
|
|
#define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */
|
|
#define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */
|
|
#define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */
|
|
#define CPU_MF_INT_RI_HALTED (1 << 5) /* run-time instr. halted */
|
|
#define CPU_MF_INT_RI_BUF_FULL (1 << 4) /* run-time instr. program
|
|
buffer full */
|
|
|
|
#define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA)
|
|
#define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \
|
|
CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \
|
|
CPU_MF_INT_SF_LSDA)
|
|
#define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL)
|
|
|
|
/* CPU measurement facility support */
|
|
static inline int cpum_cf_avail(void)
|
|
{
|
|
return MACHINE_HAS_LPP && test_facility(67);
|
|
}
|
|
|
|
static inline int cpum_sf_avail(void)
|
|
{
|
|
return MACHINE_HAS_LPP && test_facility(68);
|
|
}
|
|
|
|
|
|
struct cpumf_ctr_info {
|
|
u16 cfvn;
|
|
u16 auth_ctl;
|
|
u16 enable_ctl;
|
|
u16 act_ctl;
|
|
u16 max_cpu;
|
|
u16 csvn;
|
|
u16 max_cg;
|
|
u16 reserved1;
|
|
u32 reserved2[12];
|
|
} __packed;
|
|
|
|
/* QUERY SAMPLING INFORMATION block */
|
|
struct hws_qsi_info_block { /* Bit(s) */
|
|
unsigned int b0_13:14; /* 0-13: zeros */
|
|
unsigned int as:1; /* 14: basic-sampling authorization */
|
|
unsigned int ad:1; /* 15: diag-sampling authorization */
|
|
unsigned int b16_21:6; /* 16-21: zeros */
|
|
unsigned int es:1; /* 22: basic-sampling enable control */
|
|
unsigned int ed:1; /* 23: diag-sampling enable control */
|
|
unsigned int b24_29:6; /* 24-29: zeros */
|
|
unsigned int cs:1; /* 30: basic-sampling activation control */
|
|
unsigned int cd:1; /* 31: diag-sampling activation control */
|
|
unsigned int bsdes:16; /* 4-5: size of basic sampling entry */
|
|
unsigned int dsdes:16; /* 6-7: size of diagnostic sampling entry */
|
|
unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */
|
|
unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/
|
|
unsigned long tear; /* 24-31: TEAR contents */
|
|
unsigned long dear; /* 32-39: DEAR contents */
|
|
unsigned int rsvrd0; /* 40-43: reserved */
|
|
unsigned int cpu_speed; /* 44-47: CPU speed */
|
|
unsigned long long rsvrd1; /* 48-55: reserved */
|
|
unsigned long long rsvrd2; /* 56-63: reserved */
|
|
} __packed;
|
|
|
|
/* SET SAMPLING CONTROLS request block */
|
|
struct hws_lsctl_request_block {
|
|
unsigned int s:1; /* 0: maximum buffer indicator */
|
|
unsigned int h:1; /* 1: part. level reserved for VM use*/
|
|
unsigned long long b2_53:52;/* 2-53: zeros */
|
|
unsigned int es:1; /* 54: basic-sampling enable control */
|
|
unsigned int ed:1; /* 55: diag-sampling enable control */
|
|
unsigned int b56_61:6; /* 56-61: - zeros */
|
|
unsigned int cs:1; /* 62: basic-sampling activation control */
|
|
unsigned int cd:1; /* 63: diag-sampling activation control */
|
|
unsigned long interval; /* 8-15: sampling interval */
|
|
unsigned long tear; /* 16-23: TEAR contents */
|
|
unsigned long dear; /* 24-31: DEAR contents */
|
|
/* 32-63: */
|
|
unsigned long rsvrd1; /* reserved */
|
|
unsigned long rsvrd2; /* reserved */
|
|
unsigned long rsvrd3; /* reserved */
|
|
unsigned long rsvrd4; /* reserved */
|
|
} __packed;
|
|
|
|
struct hws_basic_entry {
|
|
unsigned int def:16; /* 0-15 Data Entry Format */
|
|
unsigned int R:4; /* 16-19 reserved */
|
|
unsigned int U:4; /* 20-23 Number of unique instruct. */
|
|
unsigned int z:2; /* zeros */
|
|
unsigned int T:1; /* 26 PSW DAT mode */
|
|
unsigned int W:1; /* 27 PSW wait state */
|
|
unsigned int P:1; /* 28 PSW Problem state */
|
|
unsigned int AS:2; /* 29-30 PSW address-space control */
|
|
unsigned int I:1; /* 31 entry valid or invalid */
|
|
unsigned int:16;
|
|
unsigned int prim_asn:16; /* primary ASN */
|
|
unsigned long long ia; /* Instruction Address */
|
|
unsigned long long gpp; /* Guest Program Parameter */
|
|
unsigned long long hpp; /* Host Program Parameter */
|
|
} __packed;
|
|
|
|
struct hws_diag_entry {
|
|
unsigned int def:16; /* 0-15 Data Entry Format */
|
|
unsigned int R:14; /* 16-19 and 20-30 reserved */
|
|
unsigned int I:1; /* 31 entry valid or invalid */
|
|
u8 data[]; /* Machine-dependent sample data */
|
|
} __packed;
|
|
|
|
struct hws_combined_entry {
|
|
struct hws_basic_entry basic; /* Basic-sampling data entry */
|
|
struct hws_diag_entry diag; /* Diagnostic-sampling data entry */
|
|
} __packed;
|
|
|
|
struct hws_trailer_entry {
|
|
union {
|
|
struct {
|
|
unsigned int f:1; /* 0 - Block Full Indicator */
|
|
unsigned int a:1; /* 1 - Alert request control */
|
|
unsigned int t:1; /* 2 - Timestamp format */
|
|
unsigned long long:61; /* 3 - 63: Reserved */
|
|
};
|
|
unsigned long long flags; /* 0 - 63: All indicators */
|
|
};
|
|
unsigned long long overflow; /* 64 - sample Overflow count */
|
|
unsigned char timestamp[16]; /* 16 - 31 timestamp */
|
|
unsigned long long reserved1; /* 32 -Reserved */
|
|
unsigned long long reserved2; /* */
|
|
unsigned long long progusage1; /* 48 - reserved for programming use */
|
|
unsigned long long progusage2; /* */
|
|
} __packed;
|
|
|
|
/* Query counter information */
|
|
static inline int qctri(struct cpumf_ctr_info *info)
|
|
{
|
|
int rc = -EINVAL;
|
|
|
|
asm volatile (
|
|
"0: .insn s,0xb28e0000,%1\n"
|
|
"1: lhi %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(1b, 2b)
|
|
: "+d" (rc), "=Q" (*info));
|
|
return rc;
|
|
}
|
|
|
|
/* Load CPU-counter-set controls */
|
|
static inline int lcctl(u64 ctl)
|
|
{
|
|
int cc;
|
|
|
|
asm volatile (
|
|
" .insn s,0xb2840000,%1\n"
|
|
" ipm %0\n"
|
|
" srl %0,28\n"
|
|
: "=d" (cc) : "m" (ctl) : "cc");
|
|
return cc;
|
|
}
|
|
|
|
/* Extract CPU counter */
|
|
static inline int ecctr(u64 ctr, u64 *val)
|
|
{
|
|
register u64 content asm("4") = 0;
|
|
int cc;
|
|
|
|
asm volatile (
|
|
" .insn rre,0xb2e40000,%0,%2\n"
|
|
" ipm %1\n"
|
|
" srl %1,28\n"
|
|
: "=d" (content), "=d" (cc) : "d" (ctr) : "cc");
|
|
if (!cc)
|
|
*val = content;
|
|
return cc;
|
|
}
|
|
|
|
/* Query sampling information */
|
|
static inline int qsi(struct hws_qsi_info_block *info)
|
|
{
|
|
int cc;
|
|
cc = 1;
|
|
|
|
asm volatile(
|
|
"0: .insn s,0xb2860000,0(%1)\n"
|
|
"1: lhi %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
|
|
: "=d" (cc), "+a" (info)
|
|
: "m" (*info)
|
|
: "cc", "memory");
|
|
|
|
return cc ? -EINVAL : 0;
|
|
}
|
|
|
|
/* Load sampling controls */
|
|
static inline int lsctl(struct hws_lsctl_request_block *req)
|
|
{
|
|
int cc;
|
|
|
|
cc = 1;
|
|
asm volatile(
|
|
"0: .insn s,0xb2870000,0(%1)\n"
|
|
"1: ipm %0\n"
|
|
" srl %0,28\n"
|
|
"2:\n"
|
|
EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
|
|
: "+d" (cc), "+a" (req)
|
|
: "m" (*req)
|
|
: "cc", "memory");
|
|
|
|
return cc ? -EINVAL : 0;
|
|
}
|
|
|
|
/* Sampling control helper functions */
|
|
|
|
#include <linux/time.h>
|
|
|
|
static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi,
|
|
unsigned long freq)
|
|
{
|
|
return (USEC_PER_SEC / freq) * qsi->cpu_speed;
|
|
}
|
|
|
|
static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi,
|
|
unsigned long rate)
|
|
{
|
|
return USEC_PER_SEC * qsi->cpu_speed / rate;
|
|
}
|
|
|
|
#define SDB_TE_ALERT_REQ_MASK 0x4000000000000000UL
|
|
#define SDB_TE_BUFFER_FULL_MASK 0x8000000000000000UL
|
|
|
|
/* Return TOD timestamp contained in an trailer entry */
|
|
static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te)
|
|
{
|
|
/* TOD in STCKE format */
|
|
if (te->t)
|
|
return *((unsigned long long *) &te->timestamp[1]);
|
|
|
|
/* TOD in STCK format */
|
|
return *((unsigned long long *) &te->timestamp[0]);
|
|
}
|
|
|
|
/* Return pointer to trailer entry of an sample data block */
|
|
static inline unsigned long *trailer_entry_ptr(unsigned long v)
|
|
{
|
|
void *ret;
|
|
|
|
ret = (void *) v;
|
|
ret += PAGE_SIZE;
|
|
ret -= sizeof(struct hws_trailer_entry);
|
|
|
|
return (unsigned long *) ret;
|
|
}
|
|
|
|
/* Return if the entry in the sample data block table (sdbt)
|
|
* is a link to the next sdbt */
|
|
static inline int is_link_entry(unsigned long *s)
|
|
{
|
|
return *s & 0x1ul ? 1 : 0;
|
|
}
|
|
|
|
/* Return pointer to the linked sdbt */
|
|
static inline unsigned long *get_next_sdbt(unsigned long *s)
|
|
{
|
|
return (unsigned long *) (*s & ~0x1ul);
|
|
}
|
|
#endif /* _ASM_S390_CPU_MF_H */
|