summaryrefslogtreecommitdiff
path: root/arch/xtensa/kernel/hw_breakpoint.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/xtensa/kernel/hw_breakpoint.c')
-rw-r--r--arch/xtensa/kernel/hw_breakpoint.c40
1 files changed, 15 insertions, 25 deletions
diff --git a/arch/xtensa/kernel/hw_breakpoint.c b/arch/xtensa/kernel/hw_breakpoint.c
index b35656ab7dbd..c2e387c19cda 100644
--- a/arch/xtensa/kernel/hw_breakpoint.c
+++ b/arch/xtensa/kernel/hw_breakpoint.c
@@ -33,14 +33,13 @@ int hw_breakpoint_slots(int type)
}
}
-int arch_check_bp_in_kernelspace(struct perf_event *bp)
+int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw)
{
unsigned int len;
unsigned long va;
- struct arch_hw_breakpoint *info = counter_arch_bp(bp);
- va = info->address;
- len = bp->attr.bp_len;
+ va = hw->address;
+ len = hw->len;
return (va >= TASK_SIZE) && ((va + len - 1) >= TASK_SIZE);
}
@@ -48,50 +47,41 @@ int arch_check_bp_in_kernelspace(struct perf_event *bp)
/*
* Construct an arch_hw_breakpoint from a perf_event.
*/
-static int arch_build_bp_info(struct perf_event *bp)
+int hw_breakpoint_arch_parse(struct perf_event *bp,
+ const struct perf_event_attr *attr,
+ struct arch_hw_breakpoint *hw)
{
- struct arch_hw_breakpoint *info = counter_arch_bp(bp);
-
/* Type */
- switch (bp->attr.bp_type) {
+ switch (attr->bp_type) {
case HW_BREAKPOINT_X:
- info->type = XTENSA_BREAKPOINT_EXECUTE;
+ hw->type = XTENSA_BREAKPOINT_EXECUTE;
break;
case HW_BREAKPOINT_R:
- info->type = XTENSA_BREAKPOINT_LOAD;
+ hw->type = XTENSA_BREAKPOINT_LOAD;
break;
case HW_BREAKPOINT_W:
- info->type = XTENSA_BREAKPOINT_STORE;
+ hw->type = XTENSA_BREAKPOINT_STORE;
break;
case HW_BREAKPOINT_RW:
- info->type = XTENSA_BREAKPOINT_LOAD | XTENSA_BREAKPOINT_STORE;
+ hw->type = XTENSA_BREAKPOINT_LOAD | XTENSA_BREAKPOINT_STORE;
break;
default:
return -EINVAL;
}
/* Len */
- info->len = bp->attr.bp_len;
- if (info->len < 1 || info->len > 64 || !is_power_of_2(info->len))
+ hw->len = attr->bp_len;
+ if (hw->len < 1 || hw->len > 64 || !is_power_of_2(hw->len))
return -EINVAL;
/* Address */
- info->address = bp->attr.bp_addr;
- if (info->address & (info->len - 1))
+ hw->address = attr->bp_addr;
+ if (hw->address & (hw->len - 1))
return -EINVAL;
return 0;
}
-int arch_validate_hwbkpt_settings(struct perf_event *bp)
-{
- int ret;
-
- /* Build the arch_hw_breakpoint. */
- ret = arch_build_bp_info(bp);
- return ret;
-}
-
int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
unsigned long val, void *data)
{