linux-kernel - [tip: perf/core] perf/x86/intel/uncore: Fix the bits of the CHA extended umask for SPR

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Message-ID: <172052531679.2215.16140288595428337453.tip-bot2@tip-bot2>
Date: Tue, 09 Jul 2024 11:41:56 -0000
From: "tip-bot2 for Kan Liang" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Kan Liang <kan.liang@...ux.intel.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Ian Rogers <irogers@...gle.com>, stable@...r.kernel.org, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel/uncore: Fix the bits of the CHA
 extended umask for SPR

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     a5a6ff3d639d088d4af7e2935e1ee0d8b4e817d4
Gitweb:        https://git.kernel.org/tip/a5a6ff3d639d088d4af7e2935e1ee0d8b4e817d4
Author:        Kan Liang <kan.liang@...ux.intel.com>
AuthorDate:    Mon, 08 Jul 2024 11:55:24 -07:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 09 Jul 2024 13:26:38 +02:00

perf/x86/intel/uncore: Fix the bits of the CHA extended umask for SPR

The perf stat errors out with UNC_CHA_TOR_INSERTS.IA_HIT_CXL_ACC_LOCAL
event.

 $perf stat -e uncore_cha_55/event=0x35,umask=0x10c0008101/ -a -- ls
    event syntax error: '..0x35,umask=0x10c0008101/'
                                      \___ Bad event or PMU

The definition of the CHA umask is config:8-15,32-55, which is 32bit.
However, the umask of the event is bigger than 32bit.
This is an error in the original uncore spec.

Add a new umask_ext5 for the new CHA umask range.

Fixes: 949b11381f81 ("perf/x86/intel/uncore: Add Sapphire Rapids server CHA support")
Closes: https://lore.kernel.org/linux-perf-users/alpine.LRH.2.20.2401300733310.11354@Diego/
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Ian Rogers <irogers@...gle.com>
Cc: stable@...r.kernel.org
Link: https://lkml.kernel.org/r/20240708185524.1185505-1-kan.liang@linux.intel.com
---
 arch/x86/events/intel/uncore_snbep.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index a7ea221..ca98744 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -462,6 +462,7 @@
 #define SPR_UBOX_DID				0x3250
 
 /* SPR CHA */
+#define SPR_CHA_EVENT_MASK_EXT			0xffffffff
 #define SPR_CHA_PMON_CTL_TID_EN			(1 << 16)
 #define SPR_CHA_PMON_EVENT_MASK			(SNBEP_PMON_RAW_EVENT_MASK | \
 						 SPR_CHA_PMON_CTL_TID_EN)
@@ -478,6 +479,7 @@ DEFINE_UNCORE_FORMAT_ATTR(umask_ext, umask, "config:8-15,32-43,45-55");
 DEFINE_UNCORE_FORMAT_ATTR(umask_ext2, umask, "config:8-15,32-57");
 DEFINE_UNCORE_FORMAT_ATTR(umask_ext3, umask, "config:8-15,32-39");
 DEFINE_UNCORE_FORMAT_ATTR(umask_ext4, umask, "config:8-15,32-55");
+DEFINE_UNCORE_FORMAT_ATTR(umask_ext5, umask, "config:8-15,32-63");
 DEFINE_UNCORE_FORMAT_ATTR(qor, qor, "config:16");
 DEFINE_UNCORE_FORMAT_ATTR(edge, edge, "config:18");
 DEFINE_UNCORE_FORMAT_ATTR(tid_en, tid_en, "config:19");
@@ -5959,7 +5961,7 @@ static struct intel_uncore_ops spr_uncore_chabox_ops = {
 
 static struct attribute *spr_uncore_cha_formats_attr[] = {
 	&format_attr_event.attr,
-	&format_attr_umask_ext4.attr,
+	&format_attr_umask_ext5.attr,
 	&format_attr_tid_en2.attr,
 	&format_attr_edge.attr,
 	&format_attr_inv.attr,
@@ -5995,7 +5997,7 @@ ATTRIBUTE_GROUPS(uncore_alias);
 static struct intel_uncore_type spr_uncore_chabox = {
 	.name			= "cha",
 	.event_mask		= SPR_CHA_PMON_EVENT_MASK,
-	.event_mask_ext		= SPR_RAW_EVENT_MASK_EXT,
+	.event_mask_ext		= SPR_CHA_EVENT_MASK_EXT,
 	.num_shared_regs	= 1,
 	.constraints		= skx_uncore_chabox_constraints,
 	.ops			= &spr_uncore_chabox_ops,