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Subject[PATCH V3 3/3] perf/core: Enabling mapping of the stop filters
Date
At this time function perf_addr_filter_needs_mmap() will _not_
return true on a user space 'stop' filter. But stop filters
needs exactly the same kind of mapping that range and start
filters get.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
kernel/events/core.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 463235ffc39c..b5022836649a 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6553,15 +6553,6 @@ got_name:
}

/*
- * Whether this @filter depends on a dynamic object which is not loaded
- * yet or its load addresses are not known.
- */
-static bool perf_addr_filter_needs_mmap(struct perf_addr_filter *filter)
-{
- return filter->filter && filter->inode;
-}
-
-/*
* Check whether inode and address range match filter criteria.
*/
static bool perf_addr_filter_match(struct perf_addr_filter *filter,
@@ -7781,7 +7772,11 @@ static void perf_event_addr_filters_apply(struct perf_event *event)
list_for_each_entry(filter, &ifh->list, entry) {
event->addr_filters_offs[count] = 0;

- if (perf_addr_filter_needs_mmap(filter))
+ /*
+ * Adjust base offset if the filter is associated to a binary
+ * that needs to be mapped.
+ */
+ if (filter->inode)
event->addr_filters_offs[count] =
perf_addr_filter_apply(filter, mm);

--
2.7.4
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