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From: Kajol Jain <kjain@linux.ibm.com>
To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org
Cc: kjain@linux.ibm.com, suka@us.ibm.com, maddy@linux.vnet.ibm.com
Subject: [PATCH 1/5] powerpc/hv-gpci: Fix starting index value
Date: Sat,  3 Oct 2020 13:19:39 +0530	[thread overview]
Message-ID: <20201003074943.338618-1-kjain@linux.ibm.com> (raw)

Commit 9e9f60108423f ("powerpc/perf/{hv-gpci, hv-common}: generate
requests with counters annotated") adds a framework for defining
gpci counters.
In this patch, they adds starting_index value as '0xffffffffffffffff'.
which is wrong as starting_index is of size 32 bits.

Because of this, incase we try to run hv-gpci event we get error.

In power9 machine:

command#: perf stat -e hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/
          -C 0 -I 1000
event syntax error: '..bie_count_and_time_tlbie_instructions_issued/'
                                  \___ value too big for format, maximum is 4294967295

This patch fix this issue and changes starting_index value to '0xffffffff'

After this patch:

command#: perf stat -e hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/ -C 0 -I 1000
     1.000085786              1,024      hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/
     2.000287818              1,024      hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/
^C     2.439113909             17,408      hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/

Fixes: 9e9f60108423f ("powerpc/perf/{hv-gpci, hv-common}: generate
requests with counters annotated")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
---
 arch/powerpc/perf/hv-gpci-requests.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/perf/hv-gpci-requests.h b/arch/powerpc/perf/hv-gpci-requests.h
index e608f9db12dd..8965b4463d43 100644
--- a/arch/powerpc/perf/hv-gpci-requests.h
+++ b/arch/powerpc/perf/hv-gpci-requests.h
@@ -95,7 +95,7 @@ REQUEST(__field(0,	8,	partition_id)
 
 #define REQUEST_NAME system_performance_capabilities
 #define REQUEST_NUM 0x40
-#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff"
+#define REQUEST_IDX_KIND "starting_index=0xffffffff"
 #include I(REQUEST_BEGIN)
 REQUEST(__field(0,	1,	perf_collect_privileged)
 	__field(0x1,	1,	capability_mask)
@@ -223,7 +223,7 @@ REQUEST(__field(0,	2, partition_id)
 
 #define REQUEST_NAME system_hypervisor_times
 #define REQUEST_NUM 0xF0
-#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff"
+#define REQUEST_IDX_KIND "starting_index=0xffffffff"
 #include I(REQUEST_BEGIN)
 REQUEST(__count(0,	8,	time_spent_to_dispatch_virtual_processors)
 	__count(0x8,	8,	time_spent_processing_virtual_processor_timers)
@@ -234,7 +234,7 @@ REQUEST(__count(0,	8,	time_spent_to_dispatch_virtual_processors)
 
 #define REQUEST_NAME system_tlbie_count_and_time
 #define REQUEST_NUM 0xF4
-#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff"
+#define REQUEST_IDX_KIND "starting_index=0xffffffff"
 #include I(REQUEST_BEGIN)
 REQUEST(__count(0,	8,	tlbie_instructions_issued)
 	/*
-- 
2.26.2


             reply	other threads:[~2020-10-03  7:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-03  7:49 Kajol Jain [this message]
2020-10-03  7:49 ` [PATCH 2/5] Documentation/ABI: Add ABI documentation for hv-24x7 format Kajol Jain
2020-10-03  7:49 ` [PATCH 3/5] Documentation/ABI: Add ABI documentation for hv-gpci format Kajol Jain
2020-10-03  7:49 ` [PATCH 4/5] powerpc/perf/hv-gpci: Add cpu hotplug support Kajol Jain
2020-10-03  7:49 ` [PATCH 5/5] powerpc/hv-gpci: Add sysfs files inside hv-gpci device to show cpumask Kajol Jain
2020-10-09  6:04 ` [PATCH 1/5] powerpc/hv-gpci: Fix starting index value Michael Ellerman

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