kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

oprofile/x86: remove OPROFILE_IBS config option

Browse source 
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>
This commit is contained in:
Robert Richter 2010-01-28 18:05:26 +01:00
parent b309a294e5
commit 013cfc5067
2 changed files with 1 additions and 44 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
arch/Kconfig
View file

@ -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

31
arch/x86/oprofile/op_model_amd.c
View file

@ -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,