• Wang Nan's avatar
    perf tools: Support setting different slots in a BPF map separately · 2d055bf2
    Wang Nan authored
    This patch introduces basic facilities to support config different slots
    in a BPF map one by one.
    
    array.nr_ranges and array.ranges are introduced into 'struct
    parse_events_term', where ranges is an array of indices range (start,
    length) which will be configured by this config term. nr_ranges is the
    size of the array. The array is passed to 'struct bpf_map_priv'.  To
    indicate the new type of configuration, BPF_MAP_KEY_RANGES is added as a
    new key type. bpf_map_config_foreach_key() is extended to iterate over
    those indices instead of all possible keys.
    
    Code in this commit will be enabled by following commit which enables
    the indices syntax for array configuration.
    Signed-off-by: default avatarWang Nan <wangnan0@huawei.com>
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alexei Starovoitov <ast@kernel.org>
    Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
    Cc: Cody P Schafer <dev@codyps.com>
    Cc: He Kuang <hekuang@huawei.com>
    Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kirill Smelkov <kirr@nexedi.com>
    Cc: Li Zefan <lizefan@huawei.com>
    Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Zefan Li <lizefan@huawei.com>
    Cc: pi3orama@163.com
    Link: http://lkml.kernel.org/r/1456132275-98875-8-git-send-email-wangnan0@huawei.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    2d055bf2
bpf-loader.c 35.5 KB