From: Suravee Suthikulpanit <[email protected]>
This patch adds the logic for enabling additional IBS control bits :
* IBS-Fetch IbsRandEn bit (bit 57)
* IBS-Op IbsOpCntCtl bit (bit 19)
Signed-off-by: Suravee Suthikulpanit <[email protected]>
Signed-off-by: Robert Richter <[email protected]>
---
arch/x86/oprofile/op_model_amd.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index a2e83af..5095137 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -310,12 +310,15 @@ static void op_amd_start(struct op_msrs const * const msrs)
#ifdef CONFIG_OPROFILE_IBS
if (ibs_allowed && ibs_config.fetch_enabled) {
low = (ibs_config.max_cnt_fetch >> 4) & 0xFFFF;
- high = IBS_FETCH_HIGH_ENABLE;
+ high = ((ibs_config.rand_en & 0x1) << 25) /* bit 57 */
+ + IBS_FETCH_HIGH_ENABLE;
wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
}
if (ibs_allowed && ibs_config.op_enabled) {
- low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF) + IBS_OP_LOW_ENABLE;
+ low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF)
+ + ((ibs_config.dispatched_ops & 0x1) << 19) /* bit 19 */
+ + IBS_OP_LOW_ENABLE;
high = 0;
wrmsr(MSR_AMD64_IBSOPCTL, low, high);
}
--
1.6.0.1