From 205c8ada314f78e6637342089e5b585a051d6cf5 Mon Sep 17 00:00:00 2001 From: Joe Stringer Date: Thu, 8 Dec 2016 18:46:19 -0800 Subject: samples/bpf: Remove perf_event_open() declaration This declaration was made in samples/bpf/libbpf.c for convenience, but there's already one in tools/perf/perf-sys.h. Reuse that one. Committer notes: Testing it: $ make -j4 O=../build/v4.9.0-rc8+ samples/bpf/ make[1]: Entering directory '/home/build/v4.9.0-rc8+' CHK include/config/kernel.release GEN ./Makefile CHK include/generated/uapi/linux/version.h Using /home/acme/git/linux as source for kernel CHK include/generated/utsrelease.h CHK include/generated/timeconst.h CHK include/generated/bounds.h CHK include/generated/asm-offsets.h CALL /home/acme/git/linux/scripts/checksyscalls.sh HOSTCC samples/bpf/test_verifier.o HOSTCC samples/bpf/libbpf.o HOSTCC samples/bpf/../../tools/lib/bpf/bpf.o HOSTCC samples/bpf/test_maps.o HOSTCC samples/bpf/sock_example.o HOSTCC samples/bpf/bpf_load.o HOSTLD samples/bpf/trace_event HOSTLD samples/bpf/sampleip HOSTLD samples/bpf/tc_l2_redirect make[1]: Leaving directory '/home/build/v4.9.0-rc8+' $ Also tested the offwaketime resulting from the rebuild, seems to work as before. Signed-off-by: Joe Stringer Tested-by: Arnaldo Carvalho de Melo Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Wang Nan Link: http://lkml.kernel.org/r/20161209024620.31660-7-joe@ovn.org [ Use -I$(srctree)/tools/lib/ to support out of source code tree builds ] Signed-off-by: Arnaldo Carvalho de Melo --- samples/bpf/Makefile | 2 ++ samples/bpf/bpf_load.c | 3 ++- samples/bpf/libbpf.c | 7 ------- samples/bpf/libbpf.h | 3 --- samples/bpf/sampleip_user.c | 3 ++- samples/bpf/trace_event_user.c | 9 +++++---- samples/bpf/trace_output_user.c | 3 ++- samples/bpf/tracex6_user.c | 3 ++- 8 files changed, 15 insertions(+), 18 deletions(-) (limited to 'samples') diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 81b0ef2f7994..5a73f5a7ace1 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -109,6 +109,8 @@ always += xdp_tx_iptunnel_kern.o HOSTCFLAGS += -I$(objtree)/usr/include HOSTCFLAGS += -I$(srctree)/tools/lib/ HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ +HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include +HOSTCFLAGS += -I$(srctree)/tools/perf HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable HOSTLOADLIBES_fds_example += -lelf diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c index 1bfb43394013..396e204888b3 100644 --- a/samples/bpf/bpf_load.c +++ b/samples/bpf/bpf_load.c @@ -23,6 +23,7 @@ #include #include "libbpf.h" #include "bpf_load.h" +#include "perf-sys.h" #define DEBUGFS "/sys/kernel/debug/tracing/" @@ -179,7 +180,7 @@ static int load_and_attach(const char *event, struct bpf_insn *prog, int size) id = atoi(buf); attr.config = id; - efd = perf_event_open(&attr, -1/*pid*/, 0/*cpu*/, -1/*group_fd*/, 0); + efd = sys_perf_event_open(&attr, -1/*pid*/, 0/*cpu*/, -1/*group_fd*/, 0); if (efd < 0) { printf("event %d fd %d err %s\n", id, efd, strerror(errno)); return -1; diff --git a/samples/bpf/libbpf.c b/samples/bpf/libbpf.c index d9af876b4a2c..bee473a494f1 100644 --- a/samples/bpf/libbpf.c +++ b/samples/bpf/libbpf.c @@ -34,10 +34,3 @@ int open_raw_sock(const char *name) return sock; } - -int perf_event_open(struct perf_event_attr *attr, int pid, int cpu, - int group_fd, unsigned long flags) -{ - return syscall(__NR_perf_event_open, attr, pid, cpu, - group_fd, flags); -} diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h index cc815624aacf..09aedc320009 100644 --- a/samples/bpf/libbpf.h +++ b/samples/bpf/libbpf.h @@ -188,7 +188,4 @@ struct bpf_insn; /* create RAW socket and bind to interface 'name' */ int open_raw_sock(const char *name); -struct perf_event_attr; -int perf_event_open(struct perf_event_attr *attr, int pid, int cpu, - int group_fd, unsigned long flags); #endif diff --git a/samples/bpf/sampleip_user.c b/samples/bpf/sampleip_user.c index 5ac5adf75931..be59d7dcbdde 100644 --- a/samples/bpf/sampleip_user.c +++ b/samples/bpf/sampleip_user.c @@ -21,6 +21,7 @@ #include #include "libbpf.h" #include "bpf_load.h" +#include "perf-sys.h" #define DEFAULT_FREQ 99 #define DEFAULT_SECS 5 @@ -49,7 +50,7 @@ static int sampling_start(int *pmu_fd, int freq) }; for (i = 0; i < nr_cpus; i++) { - pmu_fd[i] = perf_event_open(&pe_sample_attr, -1 /* pid */, i, + pmu_fd[i] = sys_perf_event_open(&pe_sample_attr, -1 /* pid */, i, -1 /* group_fd */, 0 /* flags */); if (pmu_fd[i] < 0) { fprintf(stderr, "ERROR: Initializing perf sampling\n"); diff --git a/samples/bpf/trace_event_user.c b/samples/bpf/trace_event_user.c index 704fe9fa77b2..0c5561d193a4 100644 --- a/samples/bpf/trace_event_user.c +++ b/samples/bpf/trace_event_user.c @@ -20,6 +20,7 @@ #include #include "libbpf.h" #include "bpf_load.h" +#include "perf-sys.h" #define SAMPLE_FREQ 50 @@ -125,9 +126,9 @@ static void test_perf_event_all_cpu(struct perf_event_attr *attr) /* open perf_event on all cpus */ for (i = 0; i < nr_cpus; i++) { - pmu_fd[i] = perf_event_open(attr, -1, i, -1, 0); + pmu_fd[i] = sys_perf_event_open(attr, -1, i, -1, 0); if (pmu_fd[i] < 0) { - printf("perf_event_open failed\n"); + printf("sys_perf_event_open failed\n"); goto all_cpu_err; } assert(ioctl(pmu_fd[i], PERF_EVENT_IOC_SET_BPF, prog_fd[0]) == 0); @@ -146,9 +147,9 @@ static void test_perf_event_task(struct perf_event_attr *attr) int pmu_fd; /* open task bound event */ - pmu_fd = perf_event_open(attr, 0, -1, -1, 0); + pmu_fd = sys_perf_event_open(attr, 0, -1, -1, 0); if (pmu_fd < 0) { - printf("perf_event_open failed\n"); + printf("sys_perf_event_open failed\n"); return; } assert(ioctl(pmu_fd, PERF_EVENT_IOC_SET_BPF, prog_fd[0]) == 0); diff --git a/samples/bpf/trace_output_user.c b/samples/bpf/trace_output_user.c index 1a1da7bddb93..f4fa6af22def 100644 --- a/samples/bpf/trace_output_user.c +++ b/samples/bpf/trace_output_user.c @@ -21,6 +21,7 @@ #include #include "libbpf.h" #include "bpf_load.h" +#include "perf-sys.h" static int pmu_fd; @@ -159,7 +160,7 @@ static void test_bpf_perf_event(void) }; int key = 0; - pmu_fd = perf_event_open(&attr, -1/*pid*/, 0/*cpu*/, -1/*group_fd*/, 0); + pmu_fd = sys_perf_event_open(&attr, -1/*pid*/, 0/*cpu*/, -1/*group_fd*/, 0); assert(pmu_fd >= 0); assert(bpf_map_update_elem(map_fd[0], &key, &pmu_fd, BPF_ANY) == 0); diff --git a/samples/bpf/tracex6_user.c b/samples/bpf/tracex6_user.c index 179297cb4d35..ca7874ed77f4 100644 --- a/samples/bpf/tracex6_user.c +++ b/samples/bpf/tracex6_user.c @@ -10,6 +10,7 @@ #include #include "libbpf.h" #include "bpf_load.h" +#include "perf-sys.h" #define SAMPLE_PERIOD 0x7fffffffffffffffULL @@ -30,7 +31,7 @@ static void test_bpf_perf_event(void) }; for (i = 0; i < nr_cpus; i++) { - pmu_fd[i] = perf_event_open(&attr_insn_pmu, -1/*pid*/, i/*cpu*/, -1/*group_fd*/, 0); + pmu_fd[i] = sys_perf_event_open(&attr_insn_pmu, -1/*pid*/, i/*cpu*/, -1/*group_fd*/, 0); if (pmu_fd[i] < 0) { printf("event syscall failed\n"); goto exit; -- cgit v1.2.3