From 5f87dfb79f829339508a5d989b8252eb30842587 Mon Sep 17 00:00:00 2001 From: Suravee Suthikulpanit Date: Wed, 15 Oct 2008 08:15:51 -0500 Subject: 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 Signed-off-by: Robert Richter --- arch/x86/oprofile/op_model_amd.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c index a2e83afbe3e..509513760a6 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); } -- cgit v1.2.3