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authorWill Deacon <will.deacon@arm.com>2016-08-16 18:53:15 +0300
committerWill Deacon <will.deacon@arm.com>2017-10-18 14:53:30 +0300
commitbc1d202023eb66f088f736ba423bee1cf135c720 (patch)
tree98664ac30eeca124f3d0ff9d2f3d1ac896574f3f /kernel/events/ring_buffer.c
parent5ffeb0501c6b36d080de78372fdb70b404b91e9d (diff)
downloadlinux-bc1d202023eb66f088f736ba423bee1cf135c720.tar.xz
perf/core: Export AUX buffer helpers to modules
Perf PMU drivers using AUX buffers cannot be built as modules unless the AUX helpers are exported. This patch exports perf_aux_output_{begin,end,skip} and perf_get_aux to modules. Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'kernel/events/ring_buffer.c')
-rw-r--r--kernel/events/ring_buffer.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index f684d8e5fa2b..6d9bffe4d6cc 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -411,6 +411,7 @@ err:
return NULL;
}
+EXPORT_SYMBOL_GPL(perf_aux_output_begin);
static bool __always_inline rb_need_aux_wakeup(struct ring_buffer *rb)
{
@@ -480,6 +481,7 @@ void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size)
rb_free_aux(rb);
ring_buffer_put(rb);
}
+EXPORT_SYMBOL_GPL(perf_aux_output_end);
/*
* Skip over a given number of bytes in the AUX buffer, due to, for example,
@@ -505,6 +507,7 @@ int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size)
return 0;
}
+EXPORT_SYMBOL_GPL(perf_aux_output_skip);
void *perf_get_aux(struct perf_output_handle *handle)
{
@@ -514,6 +517,7 @@ void *perf_get_aux(struct perf_output_handle *handle)
return handle->rb->aux_priv;
}
+EXPORT_SYMBOL_GPL(perf_get_aux);
#define PERF_AUX_GFP (GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN | __GFP_NORETRY)