Commit 5f87dfb7 authored by Suravee Suthikulpanit's avatar Suravee Suthikulpanit Committed by Robert Richter

x86/oprofile: add the logic for enabling additional IBS bits

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: default avatarSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent 69046d43
......@@ -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);
}
......
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