87c576584d
- when profiling is compiled in kernel includes a 64M buffer for sample - 64M is the default used by profile tool as its buffer - when using nmi profiling it is not possible to always copy sample stright to userland as the nmi may (and does) happen in bad moments - reduces sampling overhead as samples are copied out only when profiling stops
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#ifndef PROFILE_H
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#define PROFILE_H
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#include <minix/profile.h>
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#if SPROFILE /* statistical profiling */
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#include "arch_watchdog.h"
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#define SAMPLE_BUFFER_SIZE (64 << 20)
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EXTERN char sprof_sample_buffer[SAMPLE_BUFFER_SIZE];
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EXTERN int sprofiling; /* whether profiling is running */
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EXTERN int sprofiling_type; /* whether profiling is running */
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EXTERN int sprof_mem_size; /* available user memory for data */
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EXTERN struct sprof_info_s sprof_info; /* profiling info for user program */
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EXTERN vir_bytes sprof_data_addr_vir; /* user address to write data */
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EXTERN endpoint_t sprof_ep; /* user process */
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_PROTOTYPE(void nmi_sprofile_handler, (struct nmi_frame * frame));
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#endif /* SPROFILE */
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EXTERN int cprof_mem_size; /* available user memory for data */
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EXTERN struct cprof_info_s cprof_info; /* profiling info for user program */
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EXTERN int cprof_procs_no; /* number of profiled processes */
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EXTERN struct cprof_proc_info_s { /* info about profiled process */
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endpoint_t endpt; /* endpoint */
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char *name; /* name */
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vir_bytes ctl_v; /* location of control struct */
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vir_bytes buf_v; /* location of buffer */
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int slots_used; /* table slots used */
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} cprof_proc_info_inst;
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EXTERN struct cprof_proc_info_s cprof_proc_info[NR_SYS_PROCS];
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#endif /* PROFILE_H */
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