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authorWang Nan <wangnan0@huawei.com>2016-02-22 12:10:34 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-02-22 18:48:50 +0300
commit2d055bf253c0d606c5de3fe7749e3188080780ad (patch)
tree54a286894a124b58554ffa22a7b49ccfd541413e /arch/xtensa/platforms
parent7630b3e28dd827fffad13cc0aada14b00ec524d9 (diff)
downloadlinux-2d055bf253c0d606c5de3fe7749e3188080780ad.tar.xz
perf tools: Support setting different slots in a BPF map separately
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: Wang 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.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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