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SubjectRe: PROBLEM: Compile failure when 'Preemptible Kernel' is disabled in 2.6.0-test11.
On Thursday december 11th 2003 Arjan van Staalduijnen wrote:

> [compile failure for fs/proc/array.c]

> [1.] Compile failure when 'Preemptible Kernel' is disabled.

It has nothing to do with 'preemptible'!

> [4.] Currently compiling under kernel version 'Linux version 2.6.0-test9
> (root@airraid.toptracker.com) (gcc version 2.96 20000731 (Red Hat Linux
> 7.3 2.96-113)) #1 Thu Nov 13 21:53:51 CET 2003'

This is a known compiler bug for RedHat's gcc 2.96 version. It has
difficulty casting 'unsigned long long's! Try this, it applies against
2.6.0-test8 and later.

--- linux-2.6.0-test8/fs/proc/array.c.orig 2003-10-21 16:18:40.000000000 +0200
+++ linux-2.6.0-test8/fs/proc/array.c 2003-10-23 09:30:27.000000000 +0200
@@ -302,6 +302,7 @@
pid_t ppid;
int num_threads = 0;
struct mm_struct *mm;
+ unsigned long long starttime;

state = *get_task_state(task);
vsize = eip = esp = 0;
@@ -343,9 +344,7 @@
read_lock(&tasklist_lock);
ppid = task->pid ? task->real_parent->pid : 0;
read_unlock(&tasklist_lock);
- res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
-%lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu \
-%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
+ res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu ",
task->pid,
task->comm,
state,
@@ -355,7 +354,9 @@
tty_nr,
tty_pgrp,
task->flags,
- task->min_flt,
+ task->min_flt);
+ starttime = jiffies_64_to_clock_t(task->start_time - INITIAL_JIFFIES);
+ res += sprintf(buffer + res,"%lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu ",
task->cmin_flt,
task->maj_flt,
task->cmaj_flt,
@@ -367,15 +368,15 @@
nice,
num_threads,
jiffies_to_clock_t(task->it_real_value),
- (unsigned long long)
- jiffies_64_to_clock_t(task->start_time - INITIAL_JIFFIES),
+ starttime,
vsize,
mm ? mm->rss : 0, /* you might want to shift this left 3 */
task->rlim[RLIMIT_RSS].rlim_cur,
mm ? mm->start_code : 0,
mm ? mm->end_code : 0,
mm ? mm->start_stack : 0,
- esp,
+ esp);
+ res += sprintf(buffer + res,"%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
eip,
/* The signal information here is obsolete.
* It must be decimal for Linux 2.0 compatibility.
-
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