diff options
| author |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-07-18 10:43:07 -0600 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-08-18 10:35:51 +0200 |
| commit | 99f5bc9bfa9094e7c264a8e09f9507b391a3d1d1 (patch) | |
| tree | 4ba1adeee15c9f106a567abdf6fda53f357844cf /kernel | |
| parent | perf/core: Update filters only on executable mmap (diff) | |
| download | linux-dev-99f5bc9bfa9094e7c264a8e09f9507b391a3d1d1.tar.xz linux-dev-99f5bc9bfa9094e7c264a8e09f9507b391a3d1d1.zip | |
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 <mathieu.poirier@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1468860187-318-4-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/core.c | 15 |
1 files 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 @@ -6620,15 +6620,6 @@ 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, @@ -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); |