[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20211124115706.003680111@linuxfoundation.org>
Date: Wed, 24 Nov 2021 12:58:31 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Alexander Antonov <alexander.antonov@...ux.intel.com>,
"Peter Zijlstra (Intel)" <peterz@...radead.org>,
Kan Liang <kan.liang@...ux.intel.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 115/154] perf/x86/intel/uncore: Fix filter_tid mask for CHA events on Skylake Server
From: Alexander Antonov <alexander.antonov@...ux.intel.com>
[ Upstream commit e324234e0aa881b7841c7c713306403e12b069ff ]
According Uncore Reference Manual: any of the CHA events may be filtered
by Thread/Core-ID by using tid modifier in CHA Filter 0 Register.
Update skx_cha_hw_config() to follow Uncore Guide.
Fixes: cd34cd97b7b4 ("perf/x86/intel/uncore: Add Skylake server uncore support")
Signed-off-by: Alexander Antonov <alexander.antonov@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Link: https://lore.kernel.org/r/20211115090334.3789-2-alexander.antonov@linux.intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
arch/x86/events/intel/uncore_snbep.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index c01b51d1cbdff..229884f4134cb 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3545,6 +3545,9 @@ static int skx_cha_hw_config(struct intel_uncore_box *box, struct perf_event *ev
struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
struct extra_reg *er;
int idx = 0;
+ /* Any of the CHA events may be filtered by Thread/Core-ID.*/
+ if (event->hw.config & SNBEP_CBO_PMON_CTL_TID_EN)
+ idx = SKX_CHA_MSR_PMON_BOX_FILTER_TID;
for (er = skx_uncore_cha_extra_regs; er->msr; er++) {
if (er->event != (event->hw.config & er->config_mask))
--
2.33.0
Powered by blists - more mailing lists