[PATCH v3 2/5] perf/core: Export AUX buffer helpers to modules
From: Will Deacon <hidden>
Date: 2017-05-18 17:24:40
Also in:
lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
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 <redacted>
---
kernel/events/ring_buffer.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 2831480c63a2..cd5e902a27ac 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c@@ -411,6 +411,7 @@ void *perf_aux_output_begin(struct perf_output_handle *handle, return NULL; } +EXPORT_SYMBOL_GPL(perf_aux_output_begin); /* * Commit the data written by hardware into the ring buffer by adjusting
@@ -470,6 +471,7 @@ 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,
@@ -498,6 +500,7 @@ 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) {
@@ -507,6 +510,7 @@ 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)
--
2.1.4