Added support for lock()/unlock() timing registration; also phys_zero system

call

diff --git a/include/minix/com.h b/include/minix/com.h
index 6121c516dd37362fc9250311d768ecef407bdcc6..e52cf1a2b54b254296a00bc0113db886cc9e717f 100755 (executable)
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -196,7 +196,6 @@
  * modifying the system call numbers. The numbers here determine which call
  * is made from the call vector.
  */ 
-#define NR_SYS_CALLS   33      /* number of system calls */ 
 #  define SYS_TIMES     0      /* sys_times(proc_nr, bufptr) */
 #  define SYS_XIT       1      /* sys_xit(parent, proc) */
 #  define SYS_GETSIG     2     /* sys_getsig(proc_nr, sig_map) */
@@ -230,6 +229,8 @@
 #  define SYS_VIRCOPY   30     /* sys_vircopy(src,seg,addr,dst,seg,addr,cnt) */
 #  define SYS_PHYSCOPY  31     /* sys_physcopy(src_addr,dst_addr,count) */
 #  define SYS_VIRVCOPY  32     /* sys_virvcopy(vec_ptr, vec_size) */
+#  define SYS_PHYSZERO  33     /* sys_physzero(addr,count) */
+#define NR_SYS_CALLS   34      /* number of system calls */ 
 
 /* Field names for SYS_MEM, SYS_KMALLOC. */
 #define MEM_CHUNK_BASE m4_l1   /* physical base address */
@@ -328,6 +329,7 @@
 #   define GET_SCHEDINFO  10   /* get scheduling queues */
 #   define GET_PROC      11    /* get process slot if given process */
 #   define GET_MACHINE           12    /* get machine information */
+#   define GET_LOCKTIMING 13   /* get lock()/unlock() latency timing */
 #define I_PROC_NR      m7_i4   /* calling process */
 #define I_VAL_PTR      m7_p1   /* virtual address at caller */ 
 #define I_VAL_LEN      m7_i1   /* max length of value */
@@ -373,6 +375,9 @@
 #define PR_IP_PTR       m1_p3  /* initial value for ip after exec */
 #define PR_MEM_PTR     m1_p1   /* tells where memory map is for sys_newmap */
 
+/* Field names for SYS_PHYSZERO */
+#define PZ_MEM_PTR     m1_p1   /* base */
+#define PZ_COUNT       m1_i1   /* count */
 
 /*===========================================================================*
  *                Miscellaneous messages, mainly used by IS                 *

diff --git a/include/minix/config.h b/include/minix/config.h
index 6d8ccb4f3708d9ab69bf485811a0b5f241053c1b..51d81f7ed7ab4c41aa3d6535c83835fb11d7844b 100755 (executable)
--- a/include/minix/config.h
+++ b/include/minix/config.h
@@ -122,7 +122,17 @@
 #define        NR_RS_LINES        0    /* # rs232 terminals (0 to 4) */
 #define        NR_PTYS            32   /* # pseudo terminals (0 to 64) */
 
-#define ENABLE_MESSAGE_STATS   0
+/* these timing functions use quite a bit more kernel memory to hold
+ * timing data.
+ */
+#define ENABLE_INT_TIMING      0
+#define ENABLE_LOCK_TIMING     0
+
+#if ENABLE_LOCK_TIMING
+#define TIMING_POINTS          20
+#define TIMING_CATEGORIES      20
+#define TIMING_NAME            10
+#endif
 
 /*===========================================================================*
  *     There are no user-settable parameters after this line                *

diff --git a/include/minix/syslib.h b/include/minix/syslib.h
index 2e034255a44ebd5a9eeac2011e7667dd3ffae391..7c2d895541f2c8765ec5fdf2d141984ae10d10fe 100755 (executable)
--- a/include/minix/syslib.h
+++ b/include/minix/syslib.h
@@ -102,6 +102,7 @@ _PROTOTYPE(int sys_vircopy, (int src_proc, int src_seg, vir_bytes src_vir,
        sys_physcopy(NONE, PHYS_SEG, src_phys, NONE, PHYS_SEG, dst_phys, bytes)
 _PROTOTYPE(int sys_physcopy, (int src_proc, int src_seg, vir_bytes src_vir,
        int dst_proc, int dst_seg, vir_bytes dst_vir, phys_bytes bytes) );
+_PROTOTYPE(int sys_physzero, (phys_bytes base, phys_bytes bytes)       );
 
 _PROTOTYPE(int sys_umap, (int proc_nr, int seg, vir_bytes vir_addr,
         vir_bytes bytes, phys_bytes *phys_addr)                        );
@@ -124,6 +125,7 @@ _PROTOTYPE(int sys_kmalloc, (size_t size, phys_bytes *phys_base)            );
 #define sys_getkenv(k,kl,v,vl) sys_getinfo(GET_KENV, v,vl, k,kl)
 #define sys_getschedinfo(v1,v2)        sys_getinfo(GET_SCHEDINFO, v1,0, v2,0)
 #define sys_getkaddr(dst)      sys_getinfo(GET_KADDRESSES, dst, 0,0,0)
+#define sys_getlocktimings(dst)        sys_getinfo(GET_LOCKTIMING, dst, 0,0,0)
 _PROTOTYPE(int sys_getinfo, (int request, void *val_ptr, int val_len,
                                 void *key_ptr, int key_len)            );
 _PROTOTYPE(int sys_exit, (int status)                                  );

diff --git a/include/minix/type.h b/include/minix/type.h
index 1869c3011d1189461df08460f8168d0e385dd517..c782217783553cf26d474d3c0bb3a9f9fec92772 100755 (executable)
--- a/include/minix/type.h
+++ b/include/minix/type.h
@@ -119,4 +119,15 @@ struct machine {
   int vdu_vga;
 };
 
+/* Timing data of lock()/unlock() sequences, if selected to be compiled in. */
+
+#if ENABLE_LOCK_TIMING
+struct lock_timedata {
+       char names[TIMING_NAME];
+       unsigned long lock_timings[TIMING_POINTS];
+       unsigned long lock_timings_range[2];
+       unsigned long binsize, resets, misses, measurements;
+};
+#endif
+
 #endif /* _TYPE_H */