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Groups > linux.kernel > #1741584

[PATCH v5 2/7] perf/core: Export AUX buffer helpers to modules

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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>
---
 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 f684d8e5fa2b..6d9bffe4d6cc 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);
 
 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)
 
-- 
2.1.4

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[PATCH v5 0/7] Add support for the ARMv8.2 Statistical Profiling Extension Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
  [PATCH v5 4/7] arm64: sysreg: Move SPE registers and PSB into common header files Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
    Re: [PATCH v5 4/7] arm64: sysreg: Move SPE registers and PSB into  common header files Mark Rutland <mark.rutland@arm.com> - 2017-10-02 12:00 +0200
    Re: [PATCH v5 4/7] arm64: sysreg: Move SPE registers and PSB into  common header files Marc Zyngier <marc.zyngier@arm.com> - 2017-10-02 12:00 +0200
  [PATCH v5 7/7] dt-bindings: Document devicetree binding for ARM SPE Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
    Re: [PATCH v5 7/7] dt-bindings: Document devicetree binding for ARM  SPE Mark Rutland <mark.rutland@arm.com> - 2017-10-02 12:10 +0200
  [PATCH v5 6/7] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
    Re: [PATCH v5 6/7] drivers/perf: Add support for ARMv8.2  Statistical Profiling Extension Kim Phillips <kim.phillips@arm.com> - 2017-09-30 00:20 +0200
      Re: [PATCH v5 6/7] drivers/perf: Add support for ARMv8.2 Statistical  Profiling Extension Arnaldo Carvalho de Melo <acme@redhat.com> - 2017-10-02 22:50 +0200
  [PATCH v5 2/7] perf/core: Export AUX buffer helpers to modules Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
  [PATCH v5 5/7] arm64: head: Init PMSCR_EL2.{PA,PCT} when entered at EL2 without VHE Will Deacon <will.deacon@arm.com> - 2017-09-28 16:20 +0200
    Re: [PATCH v5 5/7] arm64: head: Init PMSCR_EL2.{PA,PCT} when entered  at EL2 without VHE Mark Rutland <mark.rutland@arm.com> - 2017-10-02 12:10 +0200

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