diff options
Diffstat (limited to 'arch/x86/events/amd/ibs.c')
| -rw-r--r-- | arch/x86/events/amd/ibs.c | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index cfbd020320ec..ea323dc182a6 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -339,10 +339,13 @@ static u64 get_ibs_op_count(u64 config) * and the lower 7 bits of CurCnt are randomized. * Otherwise CurCnt has the full 27-bit current counter value. */ - if (config & IBS_OP_VAL) + if (config & IBS_OP_VAL) { count = (config & IBS_OP_MAX_CNT) << 4; - else if (ibs_caps & IBS_CAPS_RDWROPCNT) + if (ibs_caps & IBS_CAPS_OPCNTEXT) + count += config & IBS_OP_MAX_CNT_EXT_MASK; + } else if (ibs_caps & IBS_CAPS_RDWROPCNT) { count = (config & IBS_OP_CUR_CNT) >> 32; + } return count; } @@ -398,7 +401,7 @@ static void perf_ibs_start(struct perf_event *event, int flags) struct hw_perf_event *hwc = &event->hw; struct perf_ibs *perf_ibs = container_of(event->pmu, struct perf_ibs, pmu); struct cpu_perf_ibs *pcpu = this_cpu_ptr(perf_ibs->pcpu); - u64 period; + u64 period, config = 0; if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED))) return; @@ -407,13 +410,19 @@ static void perf_ibs_start(struct perf_event *event, int flags) hwc->state = 0; perf_ibs_set_period(perf_ibs, hwc, &period); + if (perf_ibs == &perf_ibs_op && (ibs_caps & IBS_CAPS_OPCNTEXT)) { + config |= period & IBS_OP_MAX_CNT_EXT_MASK; + period &= ~IBS_OP_MAX_CNT_EXT_MASK; + } + config |= period >> 4; + /* * Set STARTED before enabling the hardware, such that a subsequent NMI * must observe it. */ set_bit(IBS_STARTED, pcpu->state); clear_bit(IBS_STOPPING, pcpu->state); - perf_ibs_enable_event(perf_ibs, hwc, period >> 4); + perf_ibs_enable_event(perf_ibs, hwc, config); perf_event_update_userpage(event); } @@ -581,7 +590,7 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs) struct perf_ibs_data ibs_data; int offset, size, check_rip, offset_max, throttle = 0; unsigned int msr; - u64 *buf, *config, period; + u64 *buf, *config, period, new_config = 0; if (!test_bit(IBS_STARTED, pcpu->state)) { fail: @@ -676,13 +685,17 @@ out: if (throttle) { perf_ibs_stop(event, 0); } else { - period >>= 4; - - if ((ibs_caps & IBS_CAPS_RDWROPCNT) && - (*config & IBS_OP_CNT_CTL)) - period |= *config & IBS_OP_CUR_CNT_RAND; + if (perf_ibs == &perf_ibs_op) { + if (ibs_caps & IBS_CAPS_OPCNTEXT) { + new_config = period & IBS_OP_MAX_CNT_EXT_MASK; + period &= ~IBS_OP_MAX_CNT_EXT_MASK; + } + if ((ibs_caps & IBS_CAPS_RDWROPCNT) && (*config & IBS_OP_CNT_CTL)) + new_config |= *config & IBS_OP_CUR_CNT_RAND; + } + new_config |= period >> 4; - perf_ibs_enable_event(perf_ibs, hwc, period); + perf_ibs_enable_event(perf_ibs, hwc, new_config); } perf_event_update_userpage(event); @@ -749,6 +762,13 @@ static __init void perf_event_ibs_init(void) perf_ibs_op.config_mask |= IBS_OP_CNT_CTL; *attr++ = &format_attr_cnt_ctl.attr; } + + if (ibs_caps & IBS_CAPS_OPCNTEXT) { + perf_ibs_op.max_period |= IBS_OP_MAX_CNT_EXT_MASK; + perf_ibs_op.config_mask |= IBS_OP_MAX_CNT_EXT_MASK; + perf_ibs_op.cnt_mask |= IBS_OP_MAX_CNT_EXT_MASK; + } + perf_ibs_pmu_init(&perf_ibs_op, "ibs_op"); register_nmi_handler(NMI_LOCAL, perf_ibs_nmi_handler, 0, "perf_ibs"); |