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| author | Arnd Bergmann <arnd@arndb.de> | 2016-09-06 16:10:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-07 02:34:14 +0300 |
| commit | f1e4ba5b6a6555d1f6b174d4fd0a96a9363bb57f (patch) | |
| tree | ce25127a5cf8b1ca5bda066c785fe1892a65152e /kernel/events | |
| parent | 3f591997b1484cbf869d21b511c8d84902444cfb (diff) | |
| download | linux-f1e4ba5b6a6555d1f6b174d4fd0a96a9363bb57f.tar.xz | |
perf, bpf: fix conditional call to bpf_overflow_handler
The newly added bpf_overflow_handler function is only built of both
CONFIG_EVENT_TRACING and CONFIG_BPF_SYSCALL are enabled, but the caller
only checks the latter:
kernel/events/core.c: In function 'perf_event_alloc':
kernel/events/core.c:9106:27: error: 'bpf_overflow_handler' undeclared (first use in this function)
This changes the caller so we also skip this call if CONFIG_EVENT_TRACING
is disabled entirely.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: aa6a5f3cb2b2 ("perf, bpf: add perf events core support for BPF_PROG_TYPE_PERF_EVENT programs")
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 85bf4c37911f..a7b8c1c75fa7 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -9072,7 +9072,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, if (!overflow_handler && parent_event) { overflow_handler = parent_event->overflow_handler; context = parent_event->overflow_handler_context; -#ifdef CONFIG_BPF_SYSCALL +#if defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_EVENT_TRACING) if (overflow_handler == bpf_overflow_handler) { struct bpf_prog *prog = bpf_prog_inc(parent_event->prog); |