System statistical and call profiling
support by Rogier Meurs <rogier@meurs.org>.
This commit is contained in:
Ben Gras
@@ -46,6 +46,7 @@
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#define XT_WINI_IRQ 5 /* xt winchester */
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#define FLOPPY_IRQ 6 /* floppy disk */
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#define PRINTER_IRQ 7
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#define CMOS_CLOCK_IRQ 8
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#define KBD_AUX_IRQ 12 /* AUX (PS/2 mouse) port in kbd controller */
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#define AT_WINI_0_IRQ 14 /* at winchester controller 0 */
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#define AT_WINI_1_IRQ 15 /* at winchester controller 1 */
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@@ -1,4 +1,4 @@
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#define NCALLS 98 /* number of system calls allowed */
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#define NCALLS 100 /* number of system calls allowed */
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#define EXIT 1
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#define FORK 2
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@@ -78,6 +78,8 @@
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#define FCHMOD 95 /* to FS */
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#define FCHOWN 96 /* to FS */
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#define GETSYSINFO_UP 97 /* to PM or FS */
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#define SPROF 98 /* to PM */
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#define CPROF 99 /* to PM */
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/* Calls provided by PM and FS that are not part of the API */
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#define EXEC_NEWMEM 100 /* from FS or RS to PM: new memory map for
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@@ -308,7 +308,11 @@
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# define SYS_SETGRANT (KERNEL_CALL + 34) /* sys_setgrant() */
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# define SYS_READBIOS (KERNEL_CALL + 35) /* sys_readbios() */
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#define NR_SYS_CALLS 36 /* number of system calls */
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# define SYS_SPROF (KERNEL_CALL + 36) /* sys_sprof() */
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# define SYS_CPROF (KERNEL_CALL + 37) /* sys_cprof() */
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# define SYS_PROFBUF (KERNEL_CALL + 38) /* sys_profbuf() */
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#define NR_SYS_CALLS 39 /* number of system calls */
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/* Pseudo call for use in kernel/table.c. */
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#define SYS_ALL_CALLS (NR_SYS_CALLS)
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@@ -523,6 +527,14 @@
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#define SEL_ERRORFDS m8_p3
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#define SEL_TIMEOUT m8_p4
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/* Field names for SYS_SPROF, _CPROF, _PROFBUF. */
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#define PROF_ACTION m7_i1 /* start/stop/reset/get */
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#define PROF_MEM_SIZE m7_i2 /* available memory for data */
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#define PROF_FREQ m7_i3 /* sample frequency */
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#define PROF_ENDPT m7_i4 /* endpoint of caller */
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#define PROF_CTL_PTR m7_p1 /* location of info struct */
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#define PROF_MEM_PTR m7_p2 /* location of profiling data */
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/* Field names for GETSYSINFO_UP (PM). */
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#define SIU_WHAT m2_i1
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#define SIU_LEN m2_i2
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@@ -127,4 +127,8 @@
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#define ASKDEV _ASKDEV
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#define FASTLOAD _FASTLOAD
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/* Enable or disable system profiling. */
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#define SPROFILE 0 /* statistical profiling */
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#define CPROFILE 0 /* call profiling */
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#endif /* _CONFIG_H */
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109
include/minix/profile.h
Normal file
109
include/minix/profile.h
Normal file
@@ -0,0 +1,109 @@
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#ifndef _PROFILE_H
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#define _PROFILE_H
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#include <ansi.h>
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/*
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* Types relating to system profiling. Types are supplied for both
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* statistical profiling and call profiling.
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*/
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#if SPROFILE
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# define PROF_START 0 /* start statistical profiling */
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# define PROF_STOP 1 /* stop statistical profiling */
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/* Info struct to be copied to from kernel to user program. */
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struct sprof_info_s {
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int mem_used;
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int total_samples;
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int idle_samples;
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int system_samples;
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int user_samples;
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} sprof_info_inst;
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/* What a profiling sample looks like (used for sizeof()). */
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struct {
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char name[8];
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int pc;
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} sprof_sample;
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#endif /* SPROFILE */
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#if CPROFILE
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#include <sys/types.h>
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# define PROF_GET 2 /* get call profiling tables */
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# define PROF_RESET 3 /* reset call profiling tables */
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/* Hash table size in each profiled process is table size + index size.
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*
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* Table size = CPROF_TABLE_SIZE * (CPROF_CPATH_MAX_LEN + 16).
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* Index size = CPROF_INDEX_SIZE * 4;
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*
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* Making CPROF_CPATH_MAX_LEN too small may cause call path overruns.
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* Making CPROF_TABLE_SIZE too small may cause table overruns.
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*
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* There are some restrictions: processes in the boot image are loaded
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* below 16 MB and the kernel is loaded in lower memory (below 640 kB). The
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* latter is reason to use a different size for the kernel table.
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*/
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#define CPROF_TABLE_SIZE_OTHER 3000 /* nr of slots in hash table */
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#define CPROF_TABLE_SIZE_KERNEL 1500 /* kernel has a smaller table */
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#define CPROF_CPATH_MAX_LEN 256 /* len of cpath string field: */
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/* MUST BE MULTIPLE OF WORDSIZE */
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#define CPROF_INDEX_SIZE (10*1024)/* size of index to hash table */
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#define CPROF_STACK_SIZE 24 /* size of call stack */
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#define CPROF_PROCNAME_LEN 8 /* len of proc name field */
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#define CPROF_CPATH_OVERRUN 0x1 /* call path overrun */
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#define CPROF_STACK_OVERRUN 0x2 /* call stack overrun */
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#define CPROF_TABLE_OVERRUN 0x4 /* hash table overrun */
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#define CPROF_ANNOUNCE_OTHER 1 /* processes announce their profiling
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* data on n-th entry of procentry */
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#define CPROF_ACCOUNCE_KERNEL 10000 /* kernel announces not directly */
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/* Prototype for function called by procentry to get size of table. */
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_PROTOTYPE(int profile_get_tbl_size, (void) );
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/* Prototype for function called by procentry to get announce number. */
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_PROTOTYPE(int profile_get_announce, (void) );
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/* Prototype for function called by procentry to announce control struct
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* and table locations to the kernel. */
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_PROTOTYPE(void profile_register, (void *ctl_ptr, void *tbl_ptr) );
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/* Info struct to be copied from kernel to user program. */
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struct cprof_info_s {
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int mem_used;
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int err;
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} cprof_info_inst;
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/* Data structures for control structure and profiling data table in the
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* in the profiled processes.
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*/
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struct cprof_ctl_s {
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int reset; /* kernel sets to have table reset */
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int slots_used; /* proc writes nr slots used in table */
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int err; /* proc writes errors that occurred */
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} cprof_ctl_inst;
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struct cprof_tbl_s {
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struct cprof_tbl_s *next; /* next in chain */
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char cpath[CPROF_CPATH_MAX_LEN]; /* string with call path */
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int calls; /* nr of executions of path */
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u64_t cycles; /* execution time of path, in cycles */
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} cprof_tbl_inst;
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#endif /* CPROFILE */
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_PROTOTYPE( int sprofile, (int action, int size, int freq,
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void *ctl_ptr, void *mem_ptr) );
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_PROTOTYPE( int cprofile, (int action, int size, void *ctl_ptr,
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void *mem_ptr) );
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#endif /* PROFILE_H */
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@@ -197,5 +197,13 @@ _PROTOTYPE( char *pci_dev_name, (U16_t vid, U16_t did) );
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_PROTOTYPE( char *pci_slot_name, (int devind) );
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_PROTOTYPE( int pci_set_acl, (struct rs_pci *rs_pci) );
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/* Profiling. */
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_PROTOTYPE( int sys_sprof, (int action, int size, int freq, int endpt,
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void *ctl_ptr, void *mem_ptr) );
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_PROTOTYPE( int sys_cprof, (int action, int size, int endpt,
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void *ctl_ptr, void *mem_ptr) );
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_PROTOTYPE( int sys_profbuf, (void *ctl_ptr, void *mem_ptr) );
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#endif /* _SYSLIB_H */
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