oprofile/x86: remove OPROFILE_IBS config option

OProfile support for IBS is now for several versions in the
kernel. The feature is stable now and the code can be activated
permanently.

As a side effect IBS now works also on nosmp configs.

Signed-off-by: Robert Richter <robert.richter@amd.com>

2 files changed, 1 insertions, 44 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index d67787241813..06a13729c8df 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -15,20 +15,6 @@ config OPROFILE
 
           If unsure, say N.
 
-config OPROFILE_IBS
-        bool "OProfile AMD IBS support (EXPERIMENTAL)"
-        default n
-        depends on OPROFILE && SMP && X86
-        help
-          Instruction-Based Sampling (IBS) is a new profiling
-          technique that provides rich, precise program performance
-          information. IBS is introduced by AMD Family10h processors
-          (AMD Opteron Quad-Core processor "Barcelona") to overcome
-          the limitations of conventional performance counter
-          sampling.
-
-          If unsure, say N.
-
 config OPROFILE_EVENT_MULTIPLEX
         bool "OProfile multiplexing support (EXPERIMENTAL)"
         default n
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 39686c29f03a..2b9c68d868ed 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -22,6 +22,7 @@
 #include <asm/ptrace.h>
 #include <asm/msr.h>
 #include <asm/nmi.h>
+#include <asm/apic.h>
 
 #include "op_x86_model.h"
 #include "op_counter.h"
@@ -43,8 +44,6 @@
 
 static unsigned long reset_value[NUM_VIRT_COUNTERS];
 
-#ifdef CONFIG_OPROFILE_IBS
-
 /* IbsFetchCtl bits/masks */
 #define IBS_FETCH_RAND_EN               (1ULL<<57)
 #define IBS_FETCH_VAL                   (1ULL<<49)
@@ -72,8 +71,6 @@ struct op_ibs_config {
 
 static struct op_ibs_config ibs_config;
 
-#endif
-
 #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
 
 static void op_mux_fill_in_addresses(struct op_msrs * const msrs)
@@ -185,8 +182,6 @@ static void op_amd_setup_ctrs(struct op_x86_model_spec const *model,
         }
 }
 
-#ifdef CONFIG_OPROFILE_IBS
-
 static inline void
 op_amd_handle_ibs(struct pt_regs * const regs,
                   struct op_msrs const * const msrs)
@@ -272,15 +267,6 @@ static void op_amd_stop_ibs(void)
                 wrmsrl(MSR_AMD64_IBSOPCTL, 0);
 }
 
-#else
-
-static inline void op_amd_handle_ibs(struct pt_regs * const regs,
-                                    struct op_msrs const * const msrs) { }
-static inline void op_amd_start_ibs(void) { }
-static inline void op_amd_stop_ibs(void) { }
-
-#endif
-
 static int op_amd_check_ctrs(struct pt_regs * const regs,
                              struct op_msrs const * const msrs)
 {
@@ -355,8 +341,6 @@ static void op_amd_shutdown(struct op_msrs const * const msrs)
         }
 }
 
-#ifdef CONFIG_OPROFILE_IBS
-
 static u8 ibs_eilvt_off;
 
 static inline void apic_init_ibs_nmi_per_cpu(void *arg)
@@ -507,19 +491,6 @@ static void op_amd_exit(void)
         ibs_exit();
 }
 
-#else
-
-/* no IBS support */
-
-static int op_amd_init(struct oprofile_operations *ops)
-{
-        return 0;
-}
-
-static void op_amd_exit(void) {}
-
-#endif /* CONFIG_OPROFILE_IBS */
-
 struct op_x86_model_spec op_amd_spec = {
         .num_counters           = NUM_COUNTERS,
         .num_controls           = NUM_CONTROLS,