From 198a650fca26195a3c069b2dd7ec74a17ed0f15c Mon Sep 17 00:00:00 2001 From: Luming Yu Date: Fri, 29 Sep 2017 22:10:03 +0800 Subject: [PATCH v1 7/9] early pt: enable early pt psb packet enable PSB packet Signed-off-by: Luming Yu --- arch/x86/events/intel/early_pt.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/events/intel/early_pt.c b/arch/x86/events/intel/early_pt.c index 01570d2..645d2ca 100644 --- a/arch/x86/events/intel/early_pt.c +++ b/arch/x86/events/intel/early_pt.c @@ -57,6 +57,7 @@ static unsigned mtc_freq_mask = 0; static unsigned addr_range_num = 0; static int mtc_freq = 0; +static int psb_freq = 0; static unsigned long pt_addr0_start = 0, pt_addr0_end = 0; static unsigned long pt_addr1_start = 0, pt_addr1_end = 0; @@ -202,6 +203,9 @@ static int start_early_pt(void *arg) if (mtc_freq && ((1U << (mtc_freq - 1)) & mtc_freq_mask)) val |= ((mtc_freq - 1) << 14) | MTC_EN; + if (psb_freq && ((1U << (psb_freq - 1)) & psb_freq_mask)) + val |= (psb_freq -1) << 24; + if (wrmsrl_safe(MSR_IA32_RTIT_CTL, val) < 0) { pr_info("early_pt start failed on cpu[%d]\n", cpu); __this_cpu_write(early_pt_running, false); @@ -413,3 +417,10 @@ static int __init early_pt_mtc_freq_setup(char *arg) return 0; } early_param("mtc_freq", early_pt_mtc_freq_setup); + +static int __init early_pt_psb_freq_setup(char *arg) +{ + sscanf(arg, "%d", &psb_freq); + return 0; +} +early_param("psb_freq", early_pt_psb_freq_setup); -- 2.7.5