[PATCH] uml: remove debugging code from page fault path

This eliminates the segfault info ring buffer, which added a system call to
each page fault, and which hadn't been useful for debugging in ages.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 21 deletions

diff --git a/arch/um/kernel/trap_user.c b/arch/um/kernel/trap_user.c
index f825a6eda3f5..e9ccd6b8d3c7 100644
--- a/arch/um/kernel/trap_user.c
+++ b/arch/um/kernel/trap_user.c
@@ -40,35 +40,14 @@ void kill_child_dead(int pid)
 	} while(1);
 }
 
-/* Unlocked - don't care if this is a bit off */
-int nsegfaults = 0;
-
-struct {
-	unsigned long address;
-	int is_write;
-	int pid;
-	unsigned long sp;
-	int is_user;
-} segfault_record[1024];
-
 void segv_handler(int sig, union uml_pt_regs *regs)
 {
-	int index, max;
         struct faultinfo * fi = UPT_FAULTINFO(regs);
 
         if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){
                 bad_segv(*fi, UPT_IP(regs));
 		return;
 	}
-	max = sizeof(segfault_record)/sizeof(segfault_record[0]);
-	index = next_trap_index(max);
-
-	nsegfaults++;
-        segfault_record[index].address = FAULT_ADDRESS(*fi);
-	segfault_record[index].pid = os_getpid();
-        segfault_record[index].is_write = FAULT_WRITE(*fi);
-	segfault_record[index].sp = UPT_SP(regs);
-	segfault_record[index].is_user = UPT_IS_USER(regs);
         segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
 }