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getrusage(2): zero out ru_i[xds]rss fields 

The current values were both inaccurate (especially for dynamically
linked executables) and using the wrong unit (bytes, instead of
kilobytes times ticks-of-execution).  For now we are better off not
populating these fields at all.

Change-Id: I195a8fa8db909e64a833eec25f59c9ee0b89bdc5
This commit is contained in:
David van Moolenbroek 2015-09-27 11:28:56 +00:00
parent 0f5c95a00b
commit cd27b2627a
5 changed files with 0 additions and 31 deletions
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5
minix/servers/vfs/exec.c
View File

@ -217,9 +217,6 @@ int pm_exec(vir_bytes path, size_t path_len, vir_bytes frame, size_t frame_len,
execi.args.stack_high = minix_get_user_sp();
execi.args.stack_size = DEFAULT_STACK_LIMIT;
fp->text_size = 0;
fp->data_size = 0;
lookup_init(&resolve, fullpath, PATH_NOFLAGS, &execi.vmp, &execi.vp);
resolve.l_vmnt_lock = VMNT_READ;
@ -381,8 +378,6 @@ int pm_exec(vir_bytes path, size_t path_len, vir_bytes frame, size_t frame_len,
/* Remember the new name of the process */
strlcpy(fp->fp_name, execi.args.progname, PROC_NAME_LEN);
fp->text_size = execi.args.text_size;
fp->data_size = execi.args.data_size;
pm_execfinal:
if(newfilp) unlock_filp(newfilp);

3
minix/servers/vfs/fproc.h
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@ -55,9 +55,6 @@ EXTERN struct fproc {
int fp_vp_rdlocks; /* number of read-only locks on vnodes */
int fp_vmnt_rdlocks; /* number of read-only locks on vmnts */
#endif
vir_bytes text_size; /* text segment size of current process */
vir_bytes data_size; /* data segment size of current process */
} fproc[NR_PROCS];
/* fp_flags */

3
minix/servers/vfs/misc.c
View File

@ -975,9 +975,6 @@ int do_getrusage(void)
r_usage.ru_inblock = 0;
r_usage.ru_oublock = 0;
r_usage.ru_ixrss = fp->text_size;
r_usage.ru_idrss = fp->data_size;
r_usage.ru_isrss = DEFAULT_STACK_LIMIT;
return sys_datacopy_wrapper(SELF, (vir_bytes) &r_usage, who_e,
m_in.m_lc_vfs_rusage.addr, (phys_bytes) sizeof(r_usage));

15
minix/tests/test75.c
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@ -68,20 +68,11 @@ main(int argc, char *argv[])
}
CHECK_NOT_ZERO_FIELD(r_usage1, ru_utime.tv_sec);
CHECK_NOT_ZERO_FIELD(r_usage1, ru_maxrss);
CHECK_NOT_ZERO_FIELD(r_usage1, ru_ixrss);
CHECK_NOT_ZERO_FIELD(r_usage1, ru_idrss);
CHECK_NOT_ZERO_FIELD(r_usage1, ru_isrss);
if (getrusage(RUSAGE_CHILDREN, &r_usage2) != 0) {
e(1);
exit(1);
}
CHECK_NOT_ZERO_FIELD(r_usage2, ru_maxrss);
CHECK_NOT_ZERO_FIELD(r_usage2, ru_ixrss);
CHECK_NOT_ZERO_FIELD(r_usage2, ru_idrss);
CHECK_NOT_ZERO_FIELD(r_usage2, ru_isrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage2, ru_ixrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage2, ru_idrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage2, ru_isrss);
if ((child = fork()) == 0) {
/*
* We cannot do this part of the test in the parent, since
@ -110,12 +101,6 @@ main(int argc, char *argv[])
}
CHECK_NOT_ZERO_FIELD(r_usage3, ru_utime.tv_sec);
CHECK_NOT_ZERO_FIELD(r_usage3, ru_maxrss);
CHECK_NOT_ZERO_FIELD(r_usage3, ru_ixrss);
CHECK_NOT_ZERO_FIELD(r_usage3, ru_idrss);
CHECK_NOT_ZERO_FIELD(r_usage3, ru_isrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage3, ru_ixrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage3, ru_idrss);
CHECK_EQUAL_FIELD(r_usage1, r_usage3, ru_isrss);
}
quit();

5
minix/usr.bin/trace/service/vfs.c
View File

@ -1349,11 +1349,6 @@ vfs_getrusage_in(struct trace_proc * proc, const message * m_out,
put_value(proc, "ru_inblock", "%ld", buf.ru_inblock);
put_value(proc, "ru_oublock", "%ld", buf.ru_oublock);
}
if (verbose > 0) {
put_value(proc, "ru_ixrss", "%ld", buf.ru_ixrss);
put_value(proc, "ru_idrss", "%ld", buf.ru_idrss);
put_value(proc, "ru_isrss", "%ld", buf.ru_isrss);
}
put_close_struct(proc, verbose > 1);
}