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: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
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1 changed files with 5 additions and 2 deletions
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@ -310,12 +310,15 @@ static void op_amd_start(struct op_msrs const * const msrs)
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#ifdef CONFIG_OPROFILE_IBS
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if (ibs_allowed && ibs_config.fetch_enabled) {
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low = (ibs_config.max_cnt_fetch >> 4) & 0xFFFF;
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high = IBS_FETCH_HIGH_ENABLE;
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high = ((ibs_config.rand_en & 0x1) << 25) /* bit 57 */
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+ IBS_FETCH_HIGH_ENABLE;
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wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
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}
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if (ibs_allowed && ibs_config.op_enabled) {
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low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF) + IBS_OP_LOW_ENABLE;
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low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF)
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+ ((ibs_config.dispatched_ops & 0x1) << 19) /* bit 19 */
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+ IBS_OP_LOW_ENABLE;
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high = 0;
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wrmsr(MSR_AMD64_IBSOPCTL, low, high);
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}
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