bpf tools: Add helper function for updating bpf maps elements
authorHe Kuang <hekuang@huawei.com>
Tue, 24 Nov 2015 13:36:08 +0000 (13:36 +0000)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 26 Nov 2015 20:21:24 +0000 (17:21 -0300)
commit43798bf37215fe242e592fd4605d804e2da0781b
tree78938a19ac78dbc74c9d507ea3044b29ecb79e1c
parentdcdd184b60c3943fb678dcbaf899a26f845901ad
bpf tools: Add helper function for updating bpf maps elements

Add bpf_map_update_elem() helper function which calls the sys_bpf
syscall to update elements in bpf maps. Upcoming patches will use it to
adjust data in map through the perf command line.

Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1448372181-151723-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/lib/bpf/bpf.c
tools/lib/bpf/bpf.h