sh: Convert sh64 /proc/asids to debugfs and generic sh.

This converts the sh64 /proc/asids entry to debugfs and enables it for
all SH parts that have debugfs enabled.

On MMU systems this can be used to determine which processes are using
which ASIDs which in turn can be used for finer grained cache tag
analysis.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 0 insertions, 39 deletions

diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index e9bf2548d6d..a7e5f2e74ba 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -23,7 +23,6 @@
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/proc_fs.h>
 #include <linux/io.h>
 #include <asm/syscalls.h>
 #include <asm/uaccess.h>
@@ -590,41 +589,3 @@ unsigned long get_wchan(struct task_struct *p)
 #endif
 	return pc;
 }
-
-/* Provide a /proc/asids file that lists out the
-   ASIDs currently associated with the processes.  (If the DM.PC register is
-   examined through the debug link, this shows ASID + PC.  To make use of this,
-   the PID->ASID relationship needs to be known.  This is primarily for
-   debugging.)
-   */
-
-#if defined(CONFIG_SH64_PROC_ASIDS)
-static int
-asids_proc_info(char *buf, char **start, off_t fpos, int length, int *eof, void *data)
-{
-	int len=0;
-	struct task_struct *p;
-	read_lock(&tasklist_lock);
-	for_each_process(p) {
-		int pid = p->pid;
-
-		if (!pid)
-			continue;
-		if (p->mm)
-			len += sprintf(buf+len, "%5d : %02lx\n", pid,
-				       asid_cache(smp_processor_id()));
-		else
-			len += sprintf(buf+len, "%5d : (none)\n", pid);
-	}
-	read_unlock(&tasklist_lock);
-	*eof = 1;
-	return len;
-}
-
-static int __init register_proc_asids(void)
-{
-	create_proc_read_entry("asids", 0, NULL, asids_proc_info, NULL);
-	return 0;
-}
-__initcall(register_proc_asids);
-#endif