Subject: [PATCH v2 1/2] powerpc/perf: consolidate GPCI hcall structs into asm/hvcall.h

From: Scott Cheloha <[email-masked]>
Date: Mon, 27 Jul 2020 13:46:04 -0500

The H_GetPerformanceCounterInfo (GPCI) hypercall input/output structs are
useful to modules outside of perf/, so move them into asm/hvcall.h to live
alongside the other powerpc hypercall structs.

Leave the perf-specific GPCI stuff in perf/hv-gpci.h.

Signed-off-by: Scott Cheloha <[email-masked]>
---
 arch/powerpc/include/asm/hvcall.h | 36 +++++++++++++++++++++++++++++++
 arch/powerpc/perf/hv-gpci.c       |  9 --------
 arch/powerpc/perf/hv-gpci.h       | 27 -----------------------
 3 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index e90c073e437e..c338480b4551 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -527,6 +527,42 @@ struct hv_guest_state {
 /* Latest version of hv_guest_state structure */
 #define HV_GUEST_STATE_VERSION	1
 
+/*
+ * From the document "H_GetPerformanceCounterInfo Interface" v1.07
+ *
+ * H_GET_PERF_COUNTER_INFO argument
+ */
+struct hv_get_perf_counter_info_params {
+	__be32 counter_request; /* I */
+	__be32 starting_index;  /* IO */
+	__be16 secondary_index; /* IO */
+	__be16 returned_values; /* O */
+	__be32 detail_rc; /* O, only needed when called via *_norets() */
+
+	/*
+	 * O, size each of counter_value element in bytes, only set for version
+	 * >= 0x3
+	 */
+	__be16 cv_element_size;
+
+	/* I, 0 (zero) for versions < 0x3 */
+	__u8 counter_info_version_in;
+
+	/* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
+	__u8 counter_info_version_out;
+	__u8 reserved[0xC];
+	__u8 counter_value[];
+} __packed;
+
+#define HGPCI_REQ_BUFFER_SIZE	4096
+#define HGPCI_MAX_DATA_BYTES \
+	(HGPCI_REQ_BUFFER_SIZE - sizeof(struct hv_get_perf_counter_info_params))
+
+struct hv_gpci_request_buffer {
+	struct hv_get_perf_counter_info_params params;
+	uint8_t bytes[HGPCI_MAX_DATA_BYTES];
+} __packed;
+
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_HVCALL_H */
diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c
index 6884d16ec19b..1667315b82e9 100644
--- a/arch/powerpc/perf/hv-gpci.c
+++ b/arch/powerpc/perf/hv-gpci.c
@@ -123,17 +123,8 @@ static const struct attribute_group *attr_groups[] = {
 	NULL,
 };
 
-#define HGPCI_REQ_BUFFER_SIZE	4096
-#define HGPCI_MAX_DATA_BYTES \
-	(HGPCI_REQ_BUFFER_SIZE - sizeof(struct hv_get_perf_counter_info_params))
-
 static DEFINE_PER_CPU(char, hv_gpci_reqb[HGPCI_REQ_BUFFER_SIZE]) __aligned(sizeof(uint64_t));
 
-struct hv_gpci_request_buffer {
-	struct hv_get_perf_counter_info_params params;
-	uint8_t bytes[HGPCI_MAX_DATA_BYTES];
-} __packed;
-
 static unsigned long single_gpci_request(u32 req, u32 starting_index,
 		u16 secondary_index, u8 version_in, u32 offset, u8 length,
 		u64 *value)
diff --git a/arch/powerpc/perf/hv-gpci.h b/arch/powerpc/perf/hv-gpci.h
index a3053eda5dcc..4d108262bed7 100644
--- a/arch/powerpc/perf/hv-gpci.h
+++ b/arch/powerpc/perf/hv-gpci.h
@@ -2,33 +2,6 @@
 #ifndef LINUX_POWERPC_PERF_HV_GPCI_H_
 #define LINUX_POWERPC_PERF_HV_GPCI_H_
 
-#include <linux/types.h>
-
-/* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */
-
-/* H_GET_PERF_COUNTER_INFO argument */
-struct hv_get_perf_counter_info_params {
-	__be32 counter_request; /* I */
-	__be32 starting_index;  /* IO */
-	__be16 secondary_index; /* IO */
-	__be16 returned_values; /* O */
-	__be32 detail_rc; /* O, only needed when called via *_norets() */
-
-	/*
-	 * O, size each of counter_value element in bytes, only set for version
-	 * >= 0x3
-	 */
-	__be16 cv_element_size;
-
-	/* I, 0 (zero) for versions < 0x3 */
-	__u8 counter_info_version_in;
-
-	/* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
-	__u8 counter_info_version_out;
-	__u8 reserved[0xC];
-	__u8 counter_value[];
-} __packed;
-
 /*
  * counter info version => fw version/reference (spec version)
  *
-- 
2.24.1