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.poir...@linaro.org> --- 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 f2bb2a0fae2b..6768ac4a2fcf 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6493,15 +6493,6 @@ 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, @@ -7728,7 +7719,11 @@ 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