From 55de170382a92d6da6fc9f23efc21eb2f3d25126 Mon Sep 17 00:00:00 2001 From: Jesper Dangaard Brouer Date: Tue, 2 May 2017 14:31:50 +0200 Subject: [PATCH] samples/bpf: adjust rlimit RLIMIT_MEMLOCK for traceex2, tracex3 and tracex4 Needed to adjust max locked memory RLIMIT_MEMLOCK for testing these bpf samples as these are using more and larger maps than can fit in distro default 64Kbytes limit. Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller --- samples/bpf/tracex2_user.c | 7 +++++++ samples/bpf/tracex3_user.c | 7 +++++++ samples/bpf/tracex4_user.c | 8 ++++++++ 3 files changed, 22 insertions(+) diff --git a/samples/bpf/tracex2_user.c b/samples/bpf/tracex2_user.c index ded9804c5034..7fee0f1ba9a3 100644 --- a/samples/bpf/tracex2_user.c +++ b/samples/bpf/tracex2_user.c @@ -4,6 +4,7 @@ #include #include #include +#include #include "libbpf.h" #include "bpf_load.h" @@ -112,6 +113,7 @@ static void int_exit(int sig) int main(int ac, char **argv) { + struct rlimit r = {1024*1024, RLIM_INFINITY}; char filename[256]; long key, next_key, value; FILE *f; @@ -119,6 +121,11 @@ int main(int ac, char **argv) snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + if (setrlimit(RLIMIT_MEMLOCK, &r)) { + perror("setrlimit(RLIMIT_MEMLOCK)"); + return 1; + } + signal(SIGINT, int_exit); /* start 'ping' in the background to have some kfree_skb events */ diff --git a/samples/bpf/tracex3_user.c b/samples/bpf/tracex3_user.c index 8f7d199d5945..fe372239d505 100644 --- a/samples/bpf/tracex3_user.c +++ b/samples/bpf/tracex3_user.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "libbpf.h" #include "bpf_load.h" @@ -112,11 +113,17 @@ static void print_hist(int fd) int main(int ac, char **argv) { + struct rlimit r = {1024*1024, RLIM_INFINITY}; char filename[256]; int i; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + if (setrlimit(RLIMIT_MEMLOCK, &r)) { + perror("setrlimit(RLIMIT_MEMLOCK)"); + return 1; + } + if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; diff --git a/samples/bpf/tracex4_user.c b/samples/bpf/tracex4_user.c index 03449f773cb1..22c644f1f4c3 100644 --- a/samples/bpf/tracex4_user.c +++ b/samples/bpf/tracex4_user.c @@ -12,6 +12,8 @@ #include #include #include +#include + #include "libbpf.h" #include "bpf_load.h" @@ -50,11 +52,17 @@ static void print_old_objects(int fd) int main(int ac, char **argv) { + struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; char filename[256]; int i; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + if (setrlimit(RLIMIT_MEMLOCK, &r)) { + perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)"); + return 1; + } + if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; -- 2.20.1