From: Anatolii Nikulin <nikulin.a@samsung.com>
Date: Tue, 18 Aug 2015 13:03:43 +0000 (+0300)
Subject: [FIX] remove unnessary function uprobe_prepare_singlestep()
X-Git-Tag: submit/tizen/20151123.110932~20
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c8105001007f377519e9a68bffb1621cc07b2ef1;p=kernel%2Fswap-modules.git

[FIX] remove unnessary function uprobe_prepare_singlestep()

Change-Id: Ie9cac13905c4e4c040fa6880e316d3cb1617bc83
---

diff --git a/uprobe/arch/x86/swap-asm/swap_uprobes.c b/uprobe/arch/x86/swap-asm/swap_uprobes.c
index b12e024..2762bbc 100644
--- a/uprobe/arch/x86/swap-asm/swap_uprobes.c
+++ b/uprobe/arch/x86/swap-asm/swap_uprobes.c
@@ -437,32 +437,6 @@ static void prepare_ss(struct pt_regs *regs)
 	regs->flags &= ~IF_MASK;
 }
 
-/**
- * @brief Prepares singlestep for current CPU.
- *
- * @param p Pointer to uprobe.
- * @param regs Pointer to CPU registers data.
- * @return Void.
- */
-static void uprobe_prepare_singlestep(struct uprobe *p, struct pt_regs *regs)
-{
-	int cpu = smp_processor_id();
-
-	if (p->ss_addr[cpu]) {
-		regs->EREG(ip) = (unsigned long)p->ss_addr[cpu];
-		p->ss_addr[cpu] = NULL;
-	} else {
-		regs->EREG(flags) |= TF_MASK;
-		regs->EREG(flags) &= ~IF_MASK;
-		/* single step inline if the instruction is an int3 */
-		if (p->opcode == BREAKPOINT_INSTRUCTION) {
-			regs->EREG(ip) = (unsigned long) p->addr;
-			/* printk(KERN_INFO "break_insn!!!\n"); */
-		} else
-			regs->EREG(ip) = (unsigned long) p->ainsn.insn;
-	}
-}
-
 static int uprobe_handler(struct pt_regs *regs)
 {
 	struct uprobe *p;
@@ -497,8 +471,6 @@ static int uprobe_handler(struct pt_regs *regs)
 				set_current_probe(p);
 				prepare_ss(regs);
 			}
-
-			uprobe_prepare_singlestep(p, regs);
 		}
 	}