From 99f5bc9bfa9094e7c264a8e09f9507b391a3d1d1 Mon Sep 17 00:00:00 2001 From: Mathieu Poirier Date: Mon, 18 Jul 2016 10:43:07 -0600 Subject: [PATCH] perf/core: Enable mapping of the stop filters At this time the perf_addr_filter_needs_mmap() function will _not_ return true on a user space 'stop' filter. But stop filters need exactly the same kind of mapping that range and start filters get. Signed-off-by: Mathieu Poirier Signed-off-by: Peter Zijlstra (Intel) Acked-by: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Link: http://lkml.kernel.org/r/1468860187-318-4-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Ingo Molnar --- 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 9a030a96bc1f..a5fc5c8cdfb0 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6619,15 +6619,6 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) kfree(buf); } -/* - * 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. */ @@ -7848,7 +7839,11 @@ 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); -- GitLab