[PATCH 07/15] powerpc/watchpoint: Get watchpoint count dynamically while disabling them

[Ravi Bangoria]

Instead of disabling only one watchpooint, get num of available
watchpoints dynamically and disable all of them.

Signed-off-by: Ravi Bangoria <ravi.bangoria at linux.ibm.com>
---
 arch/powerpc/include/asm/hw_breakpoint.h | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
index 980ac7d9f267..ec61e2b7195c 100644
--- a/arch/powerpc/include/asm/hw_breakpoint.h
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -75,14 +75,13 @@ extern void ptrace_triggered(struct perf_event *bp,
 			struct perf_sample_data *data, struct pt_regs *regs);
 static inline void hw_breakpoint_disable(void)
 {
-	struct arch_hw_breakpoint brk;
-
-	brk.address = 0;
-	brk.type = 0;
-	brk.len = 0;
-	brk.hw_len = 0;
-	if (ppc_breakpoint_available())
-		__set_breakpoint(&brk, 0);
+	int i;
+	struct arch_hw_breakpoint null_brk = {0};
+
+	if (ppc_breakpoint_available()) {
+		for (i = 0; i < nr_wp_slots(); i++)
+			__set_breakpoint(&null_brk, i);
+	}
 }
 extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs);
 int hw_breakpoint_handler(struct die_args *args);
-- 
2.21.1