Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 14 insertions, 36 deletions

diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c
index 9d38eb6c0d0..ab513a972c9 100644
--- a/drivers/acpi/acpica/hwxface.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -74,8 +74,7 @@ acpi_status acpi_reset(void)
 
 	/* Check if the reset register is supported */
 
-	if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
-	    !reset_reg->address) {
+	if (!reset_reg->address) {
 		return_ACPI_STATUS(AE_NOT_EXIST);
 	}
 
@@ -138,11 +137,6 @@ acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg)
 		return (status);
 	}
 
-	width = reg->bit_width;
-	if (width == 64) {
-		width = 32;	/* Break into two 32-bit transfers */
-	}
-
 	/* Initialize entire 64-bit return value to zero */
 
 	*return_value = 0;
@@ -154,24 +148,17 @@ acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg)
 	 */
 	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
 		status = acpi_os_read_memory((acpi_physical_address)
-					     address, &value, width);
+					     address, return_value,
+					     reg->bit_width);
 		if (ACPI_FAILURE(status)) {
 			return (status);
 		}
-		*return_value = value;
-
-		if (reg->bit_width == 64) {
-
-			/* Read the top 32 bits */
+	} else {		/* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
 
-			status = acpi_os_read_memory((acpi_physical_address)
-						     (address + 4), &value, 32);
-			if (ACPI_FAILURE(status)) {
-				return (status);
-			}
-			*return_value |= ((u64)value << 32);
+		width = reg->bit_width;
+		if (width == 64) {
+			width = 32;	/* Break into two 32-bit transfers */
 		}
-	} else {		/* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
 
 		status = acpi_hw_read_port((acpi_io_address)
 					   address, &value, width);
@@ -231,32 +218,22 @@ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
 		return (status);
 	}
 
-	width = reg->bit_width;
-	if (width == 64) {
-		width = 32;	/* Break into two 32-bit transfers */
-	}
-
 	/*
 	 * Two address spaces supported: Memory or IO. PCI_Config is
 	 * not supported here because the GAS structure is insufficient
 	 */
 	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
 		status = acpi_os_write_memory((acpi_physical_address)
-					      address, ACPI_LODWORD(value),
-					      width);
+					      address, value, reg->bit_width);
 		if (ACPI_FAILURE(status)) {
 			return (status);
 		}
+	} else {		/* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
 
-		if (reg->bit_width == 64) {
-			status = acpi_os_write_memory((acpi_physical_address)
-						      (address + 4),
-						      ACPI_HIDWORD(value), 32);
-			if (ACPI_FAILURE(status)) {
-				return (status);
-			}
+		width = reg->bit_width;
+		if (width == 64) {
+			width = 32;	/* Break into two 32-bit transfers */
 		}
-	} else {		/* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
 
 		status = acpi_hw_write_port((acpi_io_address)
 					    address, ACPI_LODWORD(value),
@@ -286,6 +263,7 @@ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
 
 ACPI_EXPORT_SYMBOL(acpi_write)
 
+#if (!ACPI_REDUCED_HARDWARE)
 /*******************************************************************************
  *
  * FUNCTION:    acpi_read_bit_register
@@ -453,7 +431,7 @@ unlock_and_exit:
 }
 
 ACPI_EXPORT_SYMBOL(acpi_write_bit_register)
-
+#endif				/* !ACPI_REDUCED_HARDWARE */
 /*******************************************************************************
  *
  * FUNCTION:    acpi_get_sleep_type_data