From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.ibm.com>,
Sachin Sant <sachinp@linux.vnet.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Sasha Levin <sashal@kernel.org>,
linuxppc-dev@lists.ozlabs.org, linux-kselftest@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 14/26] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests
Date: Fri, 21 Aug 2020 12:19:25 -0400 [thread overview]
Message-ID: <20200821161938.349246-14-sashal@kernel.org> (raw)
In-Reply-To: <20200821161938.349246-1-sashal@kernel.org>
From: "Desnes A. Nunes do Rosario" <desnesn@linux.ibm.com>
[ Upstream commit 3337bf41e0dd70b4064cdf60acdfcdc2d050066c ]
An extra count on ebb_state.stats.pmc_count[PMC_INDEX(pmc)] is being per-
formed when count_pmc() is used to reset PMCs on a few selftests. This
extra pmc_count can occasionally invalidate results, such as the ones from
cycles_test shown hereafter. The ebb_check_count() failed with an above
the upper limit error due to the extra value on ebb_state.stats.pmc_count.
Furthermore, this extra count is also indicated by extra PMC1 trace_log on
the output of the cycle test (as well as on pmc56_overflow_test):
==========
...
[21]: counter = 8
[22]: register SPRN_MMCR0 = 0x0000000080000080
[23]: register SPRN_PMC1 = 0x0000000080000004
[24]: counter = 9
[25]: register SPRN_MMCR0 = 0x0000000080000080
[26]: register SPRN_PMC1 = 0x0000000080000004
[27]: counter = 10
[28]: register SPRN_MMCR0 = 0x0000000080000080
[29]: register SPRN_PMC1 = 0x0000000080000004
>> [30]: register SPRN_PMC1 = 0x000000004000051e
PMC1 count (0x280000546) above upper limit 0x2800003e8 (+0x15e)
[FAIL] Test FAILED on line 52
failure: cycles
==========
Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200626164737.21943-1-desnesn@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c | 2 --
tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 2 --
.../selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c | 2 --
.../selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c | 2 --
tools/testing/selftests/powerpc/pmu/ebb/ebb.c | 2 --
.../selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c | 2 --
.../selftests/powerpc/pmu/ebb/lost_exception_test.c | 1 -
.../testing/selftests/powerpc/pmu/ebb/multi_counter_test.c | 7 -------
.../selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c | 2 --
.../testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c | 2 --
.../selftests/powerpc/pmu/ebb/pmc56_overflow_test.c | 2 --
11 files changed, 26 deletions(-)
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
index 94110b1dcd3d8..031baa43646fb 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/back_to_back_ebbs_test.c
@@ -91,8 +91,6 @@ int back_to_back_ebbs(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
index 7c57a8d79535d..361e0be9df9ae 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c
@@ -42,8 +42,6 @@ int cycles(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
index ecf5ee3283a3e..fe7d0dc2a1a26 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_freeze_test.c
@@ -99,8 +99,6 @@ int cycles_with_freeze(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
printf("EBBs while frozen %d\n", ebbs_while_frozen);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
index c0faba520b35c..b9b30f974b5ea 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test.c
@@ -71,8 +71,6 @@ int cycles_with_mmcr2(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
index 46681fec549b8..2694ae161a84a 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c
@@ -396,8 +396,6 @@ int ebb_child(union pipe read_pipe, union pipe write_pipe)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
index a991d2ea8d0a1..174e4f4dae6c0 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb_on_willing_child_test.c
@@ -38,8 +38,6 @@ static int victim_child(union pipe read_pipe, union pipe write_pipe)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
FAIL_IF(ebb_state.stats.ebb_count == 0);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
index eb8acb78bc6c1..531083accfcad 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
@@ -75,7 +75,6 @@ static int test_body(void)
ebb_freeze_pmcs();
ebb_global_disable();
- count_pmc(4, sample_period);
mtspr(SPRN_PMC4, 0xdead);
dump_summary_ebb_state();
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
index 6ff8c8ff27d66..035c02273cd49 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_counter_test.c
@@ -70,13 +70,6 @@ int multi_counter(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
- count_pmc(2, sample_period);
- count_pmc(3, sample_period);
- count_pmc(4, sample_period);
- count_pmc(5, sample_period);
- count_pmc(6, sample_period);
-
dump_ebb_state();
for (i = 0; i < 6; i++)
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
index 037cb6154f360..3e9d4ac965c85 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/multi_ebb_procs_test.c
@@ -61,8 +61,6 @@ static int cycles_child(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_summary_ebb_state();
event_close(&event);
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
index c5fa64790c22e..d90891fe96a32 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/pmae_handling_test.c
@@ -82,8 +82,6 @@ static int test_body(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(1, sample_period);
-
dump_ebb_state();
if (mmcr0_mismatch)
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
index 30e1ac62e8cb4..8ca92b9ee5b01 100644
--- a/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
+++ b/tools/testing/selftests/powerpc/pmu/ebb/pmc56_overflow_test.c
@@ -76,8 +76,6 @@ int pmc56_overflow(void)
ebb_global_disable();
ebb_freeze_pmcs();
- count_pmc(2, sample_period);
-
dump_ebb_state();
printf("PMC5/6 overflow %d\n", pmc56_overflowed);
--
2.25.1
next prev parent reply other threads:[~2020-08-21 16:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 16:19 [PATCH AUTOSEL 4.9 01/26] ALSA: pci: delete repeated words in comments Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 02/26] ASoC: tegra: Fix reference count leaks Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 03/26] arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 04/26] media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 05/26] scsi: target: tcmu: Fix crash on ARM during cmd completion Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 06/26] iommu/iova: Don't BUG on invalid PFNs Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 07/26] drm/amdkfd: Fix reference count leaks Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 08/26] drm/radeon: fix multiple reference count leak Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 09/26] drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 10/26] drm/amd/display: fix ref count leak in amdgpu_drm_ioctl Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 11/26] drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 12/26] drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 13/26] scsi: lpfc: Fix shost refcount mismatch when deleting vport Sasha Levin
2020-08-21 16:19 ` Sasha Levin [this message]
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 15/26] omapfb: fix multiple reference count leaks due to pm_runtime_get_sync Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 16/26] PCI: Fix pci_create_slot() reference count leak Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 17/26] rtlwifi: rtl8192cu: Prevent leaking urb Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 18/26] mips/vdso: Fix resource leaks in genvdso.c Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 19/26] cec-api: prevent leaking memory through hole in structure Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 20/26] drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 21/26] drm/nouveau: Fix reference count leak in nouveau_connector_detect Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 22/26] locking/lockdep: Fix overflow in presentation of average lock-time Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 23/26] scsi: iscsi: Do not put host in iscsi_set_flashnode_param() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 24/26] ceph: fix potential mdsc use-after-free crash Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 25/26] scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 26/26] EDAC/ie31200: Fallback if host bridge device is already initialized Sasha Levin
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