3d8dcb3c76
oprofile_min_interval and oprofile_max_interval are unsigned, checking for negative values doesn't work. Change hwsampler_query_min_interval and hwsampler_query_max_interval to return an unsigned long and check for a zero value instead. Reported-by: Nicolas Kaiser <nikai@nikai.net> Acked-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
113 lines
5.2 KiB
C
113 lines
5.2 KiB
C
/*
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* CPUMF HW sampler functions and internal structures
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*
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* Copyright IBM Corp. 2010
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* Author(s): Heinz Graalfs <graalfs@de.ibm.com>
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*/
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#ifndef HWSAMPLER_H_
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#define HWSAMPLER_H_
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#include <linux/workqueue.h>
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struct hws_qsi_info_block /* QUERY SAMPLING information block */
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{ /* Bit(s) */
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unsigned int b0_13:14; /* 0-13: zeros */
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unsigned int as:1; /* 14: sampling authorisation control*/
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unsigned int b15_21:7; /* 15-21: zeros */
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unsigned int es:1; /* 22: sampling enable control */
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unsigned int b23_29:7; /* 23-29: zeros */
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unsigned int cs:1; /* 30: sampling activation control */
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unsigned int:1; /* 31: reserved */
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unsigned int bsdes:16; /* 4-5: size of sampling entry */
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unsigned int:16; /* 6-7: reserved */
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unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */
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unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/
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unsigned long tear; /* 24-31: TEAR contents */
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unsigned long dear; /* 32-39: DEAR contents */
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unsigned int rsvrd0; /* 40-43: reserved */
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unsigned int cpu_speed; /* 44-47: CPU speed */
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unsigned long long rsvrd1; /* 48-55: reserved */
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unsigned long long rsvrd2; /* 56-63: reserved */
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};
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struct hws_ssctl_request_block /* SET SAMPLING CONTROLS req block */
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{ /* bytes 0 - 7 Bit(s) */
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unsigned int s:1; /* 0: maximum buffer indicator */
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unsigned int h:1; /* 1: part. level reserved for VM use*/
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unsigned long b2_53:52; /* 2-53: zeros */
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unsigned int es:1; /* 54: sampling enable control */
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unsigned int b55_61:7; /* 55-61: - zeros */
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unsigned int cs:1; /* 62: sampling activation control */
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unsigned int b63:1; /* 63: zero */
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unsigned long interval; /* 8-15: sampling interval */
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unsigned long tear; /* 16-23: TEAR contents */
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unsigned long dear; /* 24-31: DEAR contents */
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/* 32-63: */
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unsigned long rsvrd1; /* reserved */
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unsigned long rsvrd2; /* reserved */
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unsigned long rsvrd3; /* reserved */
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unsigned long rsvrd4; /* reserved */
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};
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struct hws_cpu_buffer {
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unsigned long first_sdbt; /* @ of 1st SDB-Table for this CP*/
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unsigned long worker_entry;
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unsigned long sample_overflow; /* taken from SDB ... */
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struct hws_qsi_info_block qsi;
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struct hws_ssctl_request_block ssctl;
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struct work_struct worker;
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atomic_t ext_params;
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unsigned long req_alert;
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unsigned long loss_of_sample_data;
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unsigned long invalid_entry_address;
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unsigned long incorrect_sdbt_entry;
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unsigned long sample_auth_change_alert;
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unsigned int finish:1;
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unsigned int oom:1;
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unsigned int stop_mode:1;
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};
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struct hws_data_entry {
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unsigned int def:16; /* 0-15 Data Entry Format */
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unsigned int R:4; /* 16-19 reserved */
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unsigned int U:4; /* 20-23 Number of unique instruct. */
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unsigned int z:2; /* zeros */
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unsigned int T:1; /* 26 PSW DAT mode */
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unsigned int W:1; /* 27 PSW wait state */
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unsigned int P:1; /* 28 PSW Problem state */
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unsigned int AS:2; /* 29-30 PSW address-space control */
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unsigned int I:1; /* 31 entry valid or invalid */
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unsigned int:16;
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unsigned int prim_asn:16; /* primary ASN */
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unsigned long long ia; /* Instruction Address */
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unsigned long long lpp; /* Logical-Partition Program Param. */
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unsigned long long vpp; /* Virtual-Machine Program Param. */
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};
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struct hws_trailer_entry {
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unsigned int f:1; /* 0 - Block Full Indicator */
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unsigned int a:1; /* 1 - Alert request control */
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unsigned long:62; /* 2 - 63: Reserved */
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unsigned long overflow; /* 64 - sample Overflow count */
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unsigned long timestamp; /* 16 - time-stamp */
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unsigned long timestamp1; /* */
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unsigned long reserved1; /* 32 -Reserved */
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unsigned long reserved2; /* */
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unsigned long progusage1; /* 48 - reserved for programming use */
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unsigned long progusage2; /* */
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};
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int hwsampler_setup(void);
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int hwsampler_shutdown(void);
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int hwsampler_allocate(unsigned long sdbt, unsigned long sdb);
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int hwsampler_deallocate(void);
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unsigned long hwsampler_query_min_interval(void);
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unsigned long hwsampler_query_max_interval(void);
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int hwsampler_start_all(unsigned long interval);
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int hwsampler_stop_all(void);
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int hwsampler_deactivate(unsigned int cpu);
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int hwsampler_activate(unsigned int cpu);
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unsigned long hwsampler_get_sample_overflow_count(unsigned int cpu);
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#endif /*HWSAMPLER_H_*/
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