[PATCH 1/4] samples/bpf: Fix build breakage with map_perf_test_user.c

[Naveen N. Rao]

Building BPF samples is failing with the below error:

samples/bpf/map_perf_test_user.c: In function âmainâ:
samples/bpf/map_perf_test_user.c:134:9: error: variable ârâ has
initializer but incomplete type
  struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
         ^
samples/bpf/map_perf_test_user.c:134:21: error: âRLIM_INFINITYâ
undeclared (first use in this function)
  struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
                     ^
samples/bpf/map_perf_test_user.c:134:21: note: each undeclared
identifier is reported only once for each function it appears in
samples/bpf/map_perf_test_user.c:134:9: warning: excess elements in
struct initializer [enabled by default]
  struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
         ^
samples/bpf/map_perf_test_user.c:134:9: warning: (near initialization
for ârâ) [enabled by default]
samples/bpf/map_perf_test_user.c:134:9: warning: excess elements in
struct initializer [enabled by default]
samples/bpf/map_perf_test_user.c:134:9: warning: (near initialization
for ârâ) [enabled by default]
samples/bpf/map_perf_test_user.c:134:16: error: storage size of ârâ
isnât known
  struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
                ^
samples/bpf/map_perf_test_user.c:139:2: warning: implicit declaration of
function âsetrlimitâ [-Wimplicit-function-declaration]
  setrlimit(RLIMIT_MEMLOCK, &r);
  ^
samples/bpf/map_perf_test_user.c:139:12: error: âRLIMIT_MEMLOCKâ
undeclared (first use in this function)
  setrlimit(RLIMIT_MEMLOCK, &r);
            ^
samples/bpf/map_perf_test_user.c:134:16: warning: unused variable ârâ
[-Wunused-variable]
  struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
                ^
make[2]: *** [samples/bpf/map_perf_test_user.o] Error 1

Fix this by including the necessary header file.

Cc: Alexei Starovoitov <ast@xxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>
---
 samples/bpf/map_perf_test_user.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c
index 95af56e..3147377 100644
--- a/samples/bpf/map_perf_test_user.c
+++ b/samples/bpf/map_perf_test_user.c
@@ -17,6 +17,7 @@
 #include <linux/bpf.h>
 #include <string.h>
 #include <time.h>
+#include <sys/resource.h>
 #include "libbpf.h"
 #include "bpf_load.h"
 
-- 
2.7.4