Commit f09509b9 authored by David Carrillo-Cisneros's avatar David Carrillo-Cisneros Committed by Ingo Molnar

perf/x86/intel: Print LBR support statement after validation

The following commit:

  338b522c ("perf/x86/intel: Protect LBR and extra_regs against KVM lying")

added an additional test to LBR support detection that is performed after
printing the LBR support statement to dmesg.

Move the LBR support output after the very last test, to make sure we
print the true status of LBR support.
Signed-off-by: default avatarDavid Carrillo-Cisneros <davidcc@google.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarStephane Eranian <eranian@google.com>
Reviewed-by: default avatarAndi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1466533874-52003-2-git-send-email-davidcc@google.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 8114e90e
......@@ -3958,6 +3958,8 @@ __init int intel_pmu_init(void)
x86_pmu.lbr_nr = 0;
}
if (x86_pmu.lbr_nr)
pr_cont("%d-deep LBR, ", x86_pmu.lbr_nr);
/*
* Access extra MSR may cause #GP under certain circumstances.
* E.g. KVM doesn't support offcore event
......
......@@ -956,7 +956,6 @@ void __init intel_pmu_lbr_init_core(void)
* SW branch filter usage:
* - compensate for lack of HW filter
*/
pr_cont("4-deep LBR, ");
}
/* nehalem/westmere */
......@@ -977,7 +976,6 @@ void __init intel_pmu_lbr_init_nhm(void)
* That requires LBR_FAR but that means far
* jmp need to be filtered out
*/
pr_cont("16-deep LBR, ");
}
/* sandy bridge */
......@@ -997,7 +995,6 @@ void __init intel_pmu_lbr_init_snb(void)
* That requires LBR_FAR but that means far
* jmp need to be filtered out
*/
pr_cont("16-deep LBR, ");
}
/* haswell */
......@@ -1010,8 +1007,6 @@ void intel_pmu_lbr_init_hsw(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = hsw_lbr_sel_map;
pr_cont("16-deep LBR, ");
}
/* skylake */
......@@ -1031,7 +1026,6 @@ __init void intel_pmu_lbr_init_skl(void)
* That requires LBR_FAR but that means far
* jmp need to be filtered out
*/
pr_cont("32-deep LBR, ");
}
/* atom */
......@@ -1057,7 +1051,6 @@ void __init intel_pmu_lbr_init_atom(void)
* SW branch filter usage:
* - compensate for lack of HW filter
*/
pr_cont("8-deep LBR, ");
}
/* slm */
......@@ -1088,6 +1081,4 @@ void intel_pmu_lbr_init_knl(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = snb_lbr_sel_map;
pr_cont("8-deep LBR, ");
}
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