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The profile utility can set the sprofiling mode

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- profile --nmi | --rtc sets the profiling mode

- --rtc is default, uses BIOS RTC, cannot profile kernel the presetted
  frequency values apply

- --nmi is only available in APIC mode as it uses the NMI watchdog, -f
  allows any frequency in Hz

- both modes use compatible data structures
This commit is contained in:
Tomas Hruby
2010-09-23 10:49:42 +00:00
parent db12229ce3
commit 74c5cd7668
8 changed files with 45 additions and 12 deletions
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1
include/minix/com.h
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@@ -590,6 +590,7 @@
#define PROF_MEM_SIZE m7_i2 /* available memory for data */
#define PROF_FREQ m7_i3 /* sample frequency */
#define PROF_ENDPT m7_i4 /* endpoint of caller */
#define PROF_INTR_TYPE m7_i5 /* interrupt type */
#define PROF_CTL_PTR m7_p1 /* location of info struct */
#define PROF_MEM_PTR m7_p2 /* location of profiling data */

3
include/minix/ipc.h
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@@ -22,7 +22,7 @@ typedef struct {long m4l1, m4l2, m4l3, m4l4, m4l5;} mess_4;
typedef struct {short m5s1, m5s2; int m5i1, m5i2; long m5l1, m5l2, m5l3;}mess_5;
typedef struct {long m6l1, m6l2, m6l3; short m6s1, m6s2, m6s3; char m6c1, m6c2;
char *m6p1, *m6p2;} mess_6;
typedef struct {int m7i1, m7i2, m7i3, m7i4; char *m7p1, *m7p2;} mess_7;
typedef struct {int m7i1, m7i2, m7i3, m7i4, m7i5; char *m7p1, *m7p2;} mess_7;
typedef struct {int m8i1, m8i2; char *m8p1, *m8p2, *m8p3, *m8p4;} mess_8;
typedef struct {long m9l1, m9l2, m9l3, m9l4, m9l5;
short m9s1, m9s2, m9s3, m9s4; } mess_9;
@@ -94,6 +94,7 @@ typedef struct {
#define m7_i2 m_u.m_m7.m7i2
#define m7_i3 m_u.m_m7.m7i3
#define m7_i4 m_u.m_m7.m7i4
#define m7_i5 m_u.m_m7.m7i5
#define m7_p1 m_u.m_m7.m7p1
#define m7_p2 m_u.m_m7.m7p2

5
include/minix/profile.h
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@@ -14,6 +14,9 @@
# define PROF_START 0 /* start statistical profiling */
# define PROF_STOP 1 /* stop statistical profiling */
#define PROF_RTC 0 /* RTC based profiling */
#define PROF_NMI 1 /* NMI based profiling, profiles kernel too */
/* Info struct to be copied to from kernel to user program. */
struct sprof_info_s {
int mem_used;
@@ -101,7 +104,7 @@ struct cprof_tbl_s {
u64_t cycles; /* execution time of path, in cycles */
} cprof_tbl_inst;
_PROTOTYPE( int sprofile, (int action, int size, int freq,
_PROTOTYPE( int sprofile, (int action, int size, int freq, int type,
void *ctl_ptr, void *mem_ptr) );
_PROTOTYPE( int cprofile, (int action, int size, void *ctl_ptr,

2
include/minix/syslib.h
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@@ -257,7 +257,7 @@ _PROTOTYPE( int pci_get_bar, (int devind, int port, u32_t *base,
u32_t *size, int *ioflag) );
/* Profiling. */
_PROTOTYPE( int sys_sprof, (int action, int size, int freq,
_PROTOTYPE( int sys_sprof, (int action, int size, int freq, int type,
endpoint_t endpt, void *ctl_ptr, void *mem_ptr) );
_PROTOTYPE( int sys_cprof, (int action, int size, endpoint_t endpt,
void *ctl_ptr, void *mem_ptr) );