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Subject[PATCH 1/6] hw_breakpoint: Pass bp_type directly as find_slot_idx argument
Date
Passing bp_type directly as find_slot_idx argument,
so we don't need to have whole event to get the
breakpoint slot type. It will be used in following
changes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
kernel/events/hw_breakpoint.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index 3f8cb1e14588..395ca07965af 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -85,9 +85,9 @@ __weak int hw_breakpoint_weight(struct perf_event *bp)
return 1;
}

-static inline enum bp_type_idx find_slot_idx(struct perf_event *bp)
+static inline enum bp_type_idx find_slot_idx(u64 bp_type)
{
- if (bp->attr.bp_type & HW_BREAKPOINT_RW)
+ if (bp_type & HW_BREAKPOINT_RW)
return TYPE_DATA;

return TYPE_INST;
@@ -122,7 +122,7 @@ static int task_bp_pinned(int cpu, struct perf_event *bp, enum bp_type_idx type)

list_for_each_entry(iter, &bp_task_head, hw.bp_list) {
if (iter->hw.target == tsk &&
- find_slot_idx(iter) == type &&
+ find_slot_idx(iter->attr.bp_type) == type &&
(iter->cpu < 0 || cpu == iter->cpu))
count += hw_breakpoint_weight(iter);
}
@@ -292,7 +292,7 @@ static int __reserve_bp_slot(struct perf_event *bp)
bp->attr.bp_type == HW_BREAKPOINT_INVALID)
return -EINVAL;

- type = find_slot_idx(bp);
+ type = find_slot_idx(bp->attr.bp_type);
weight = hw_breakpoint_weight(bp);

fetch_bp_busy_slots(&slots, bp, type);
@@ -329,7 +329,7 @@ static void __release_bp_slot(struct perf_event *bp)
enum bp_type_idx type;
int weight;

- type = find_slot_idx(bp);
+ type = find_slot_idx(bp->attr.bp_type);
weight = hw_breakpoint_weight(bp);
toggle_bp_slot(bp, false, type, weight);
}
--
2.13.6
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