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Subject[PATCH 07/15] powerpc/watchpoint: Get watchpoint count dynamically while disabling them
Date
Instead of disabling only one watchpooint, get num of available
watchpoints dynamically and disable all of them.

Signed-off-by: Ravi Bangoria <ravi.bangoria@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
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