kernel-ark/include/asm-sparc64/kdebug.h
Paul E. McKenney b2b1866006 [PATCH] RCU: clean up a few remaining synchronize_kernel() calls
2.6.12-rc6-mm1 has a few remaining synchronize_kernel()s, some (but not
all) in comments.  This patch changes these synchronize_kernel() calls (and
comments) to synchronize_rcu() or synchronize_sched() as follows:

- arch/x86_64/kernel/mce.c mce_read(): change to synchronize_sched() to
  handle races with machine-check exceptions (synchronize_rcu() would not cut
  it given RCU implementations intended for hardcore realtime use.

- drivers/input/serio/i8042.c i8042_stop(): change to synchronize_sched() to
  handle races with i8042_interrupt() interrupt handler.  Again,
  synchronize_rcu() would not cut it given RCU implementations intended for
  hardcore realtime use.

- include/*/kdebug.h comments: change to synchronize_sched() to handle races
  with NMIs.  As before, synchronize_rcu() would not cut it...

- include/linux/list.h comment: change to synchronize_rcu(), since this
  comment is for list_del_rcu().

- security/keys/key.c unregister_key_type(): change to synchronize_rcu(),
  since this is interacting with RCU read side.

- security/keys/process_keys.c install_session_keyring(): change to
  synchronize_rcu(), since this is interacting with RCU read side.

Signed-off-by: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:24:38 -07:00

53 lines
1.0 KiB
C

#ifndef _SPARC64_KDEBUG_H
#define _SPARC64_KDEBUG_H
/* Nearly identical to x86_64/i386 code. */
#include <linux/notifier.h>
struct pt_regs;
struct die_args {
struct pt_regs *regs;
const char *str;
long err;
int trapnr;
int signr;
};
/* Note - you should never unregister because that can race with NMIs.
* If you really want to do it first unregister - then synchronize_sched
* - then free.
*/
int register_die_notifier(struct notifier_block *nb);
extern struct notifier_block *sparc64die_chain;
extern void bad_trap(struct pt_regs *, long);
/* Grossly misnamed. */
enum die_val {
DIE_OOPS = 1,
DIE_DEBUG, /* ta 0x70 */
DIE_DEBUG_2, /* ta 0x71 */
DIE_DIE,
DIE_TRAP,
DIE_TRAP_TL1,
DIE_GPF,
DIE_CALL,
DIE_PAGE_FAULT,
};
static inline int notify_die(enum die_val val,char *str, struct pt_regs *regs,
long err, int trap, int sig)
{
struct die_args args = { .regs = regs,
.str = str,
.err = err,
.trapnr = trap,
.signr = sig };
return notifier_call_chain(&sparc64die_chain, val, &args);
}
#endif