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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-12-02 09:33:25 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-12-02 09:33:25 -0800 |
| commit | 0eea505058740aa45486145296ef4fefbd8cab85 (patch) | |
| tree | 1bc265d615b8353405a04630f610a42c48302f47 /kernel/bpf/arraymap.c | |
| parent | Input: parkbd - drop bogus __init from parkbd_allocate_serio() (diff) | |
| parent | Linux 4.4-rc3 (diff) | |
Merge tag 'v4.4-rc3' into next
Merge with Linux 4.4-rc3 to bring in helpers for multiu-driver modules.
Diffstat (limited to 'kernel/bpf/arraymap.c')
| -rw-r--r-- | kernel/bpf/arraymap.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index 29ace107f236..3f4c99e06c6b 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -15,6 +15,7 @@ #include <linux/slab.h> #include <linux/mm.h> #include <linux/filter.h> +#include <linux/perf_event.h> /* Called from syscall */ static struct bpf_map *array_map_alloc(union bpf_attr *attr) @@ -48,7 +49,7 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr) array->map.key_size = attr->key_size; array->map.value_size = attr->value_size; array->map.max_entries = attr->max_entries; - + array->map.pages = round_up(array_size, PAGE_SIZE) >> PAGE_SHIFT; array->elem_size = elem_size; return &array->map; @@ -291,14 +292,23 @@ static void *perf_event_fd_array_get_ptr(struct bpf_map *map, int fd) attr = perf_event_attrs(event); if (IS_ERR(attr)) - return (void *)attr; + goto err; - if (attr->type != PERF_TYPE_RAW && - attr->type != PERF_TYPE_HARDWARE) { - perf_event_release_kernel(event); - return ERR_PTR(-EINVAL); - } - return event; + if (attr->inherit) + goto err; + + if (attr->type == PERF_TYPE_RAW) + return event; + + if (attr->type == PERF_TYPE_HARDWARE) + return event; + + if (attr->type == PERF_TYPE_SOFTWARE && + attr->config == PERF_COUNT_SW_BPF_OUTPUT) + return event; +err: + perf_event_release_kernel(event); + return ERR_PTR(-EINVAL); } static void perf_event_fd_array_put_ptr(void *ptr) |