do not panic after modified data found on the freelist

[unix-history] / usr / src / sys / kern / subr_prof.c

diff --git a/usr/src/sys/kern/subr_prof.c b/usr/src/sys/kern/subr_prof.c
index cf6b88c..eed20b5 100644 (file)
--- a/usr/src/sys/kern/subr_prof.c
+++ b/usr/src/sys/kern/subr_prof.c
@@ -4,7 +4,7 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)subr_prof.c 7.8 (Berkeley) %G%
+ *     @(#)subr_prof.c 7.10 (Berkeley) %G%

  */
 
 #ifdef GPROF
  */
 
 #ifdef GPROF


@@ -20,15 +20,7 @@ int  profiling = 3;
 u_short        *froms;
 struct tostruct *tos = 0;
 long   tolimit = 0;
 u_short        *froms;
 struct tostruct *tos = 0;
 long   tolimit = 0;

-#if defined(vax)
-char   *s_lowpc = (char *)0x80000000;
-#endif
-#if defined(tahoe)
-char   *s_lowpc = (char *)0xc0000000;
-#endif
-#if defined(hp300)
-char   *s_lowpc = (char *)0x00000000;
-#endif
+char   *s_lowpc = (char *)KERNBASE;

 extern char etext;
 char   *s_highpc = &etext;
 u_long s_textsize = 0;
 extern char etext;
 char   *s_highpc = &etext;
 u_long s_textsize = 0;


@@ -59,7 +51,7 @@ kmstartup()
        }
        bzero(sbuf, ssiz);
        fromssize = s_textsize / HASHFRACTION;
        }
        bzero(sbuf, ssiz);
        fromssize = s_textsize / HASHFRACTION;

-       froms = (u_short *)malloc(fromssize, M_GPROF, M_WAITOK);
+       froms = (u_short *)malloc(fromssize, M_GPROF, M_NOWAIT);

        if (froms == 0) {
                printf("No space for monitor buffer(s)\n");
                free(sbuf, M_GPROF);
        if (froms == 0) {
                printf("No space for monitor buffer(s)\n");
                free(sbuf, M_GPROF);


@@ -88,14 +80,6 @@ kmstartup()
        kcount = (u_short *)(((int)sbuf) + sizeof (struct phdr));
 }
 
        kcount = (u_short *)(((int)sbuf) + sizeof (struct phdr));
 }
 

-/*
- * Special, non-profiled versions
- */
-#if defined(hp300) && !defined(__GNUC__)
-#define splhigh        _splhigh
-#define splx   _splx
-#endif
-

 /*
  * This routine is massaged so that it may be jsb'ed to on vax.
  */
 /*
  * This routine is massaged so that it may be jsb'ed to on vax.
  */


@@ -156,10 +140,7 @@ mcount()
        asm("   movl -8(r11),r11");     /* frompcindex = 1 callf frame back */
 #endif
 #if defined(hp300)
        asm("   movl -8(r11),r11");     /* frompcindex = 1 callf frame back */
 #endif
 #if defined(hp300)

-       asm("   .text");                /* make sure we're in text space */
-       asm("   movl a6@(4),a5");       /* selfpc = pc pushed by mcount jsr */
-       asm("   movl a6@(8),a4");       /* frompcindex = pc pushed by jsr into
-                                          self, stack frame not yet built */
+       Fix Me!!

 #endif
 #endif /* not __GNUC__ */
 #endif /* not lint */
 #endif
 #endif /* not __GNUC__ */
 #endif /* not lint */


@@ -168,7 +149,7 @@ mcount()
         * this requires that splhigh() and splx() below
         * do NOT call mcount!
         */
         * this requires that splhigh() and splx() below
         * do NOT call mcount!
         */

-#if defined(hp300) && defined(__GNUC__)
+#if defined(hp300)

        asm("movw       sr,%0" : "=g" (s));
        asm("movw       #0x2700,sr");
 #else
        asm("movw       sr,%0" : "=g" (s));
        asm("movw       #0x2700,sr");
 #else


@@ -251,7 +232,7 @@ mcount()
 
        }
 done:
 
        }
 done:

-#if defined(hp300) && defined(__GNUC__)
+#if defined(hp300)

        asm("movw       %0,sr" : : "g" (s));
 #else
        splx(s);
        asm("movw       %0,sr" : : "g" (s));
 #else
        splx(s);