From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"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>
Subject: [PATCH 4.9 20/78] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests
Date: Tue, 1 Sep 2020 17:09:56 +0200 [thread overview]
Message-ID: <20200901150925.759806598@linuxfoundation.org> (raw)
In-Reply-To: <20200901150924.680106554@linuxfoundation.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:[~2020-09-01 17:15 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 15:09 [PATCH 4.9 00/78] 4.9.235-rc1 review Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 01/78] bonding: fix a potential double-unregister Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 02/78] bonding: show saner speed for broadcast mode Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 03/78] net: Fix potential wrong skb->protocol in skb_vlan_untag() Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 04/78] tipc: fix uninit skb->data in tipc_nl_compat_dumpit() Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 05/78] ipvlan: fix device features Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 06/78] gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 07/78] ALSA: pci: delete repeated words in comments Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 08/78] ASoC: tegra: Fix reference count leaks Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 09/78] arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 10/78] media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq() Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 11/78] scsi: target: tcmu: Fix crash on ARM during cmd completion Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 12/78] iommu/iova: Dont BUG on invalid PFNs Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 13/78] drm/amdkfd: Fix reference count leaks Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 14/78] drm/radeon: fix multiple reference count leak Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 15/78] drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 16/78] drm/amd/display: fix ref count leak in amdgpu_drm_ioctl Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 17/78] drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 18/78] drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 19/78] scsi: lpfc: Fix shost refcount mismatch when deleting vport Greg Kroah-Hartman
2020-09-01 15:09 ` Greg Kroah-Hartman [this message]
2020-09-01 15:09 ` [PATCH 4.9 21/78] omapfb: fix multiple reference count leaks due to pm_runtime_get_sync Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 22/78] PCI: Fix pci_create_slot() reference count leak Greg Kroah-Hartman
2020-09-01 15:09 ` [PATCH 4.9 23/78] rtlwifi: rtl8192cu: Prevent leaking urb Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 24/78] mips/vdso: Fix resource leaks in genvdso.c Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 25/78] cec-api: prevent leaking memory through hole in structure Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 26/78] drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 27/78] drm/nouveau: Fix reference count leak in nouveau_connector_detect Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 28/78] locking/lockdep: Fix overflow in presentation of average lock-time Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 29/78] scsi: iscsi: Do not put host in iscsi_set_flashnode_param() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 30/78] ceph: fix potential mdsc use-after-free crash Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 31/78] scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 32/78] EDAC/ie31200: Fallback if host bridge device is already initialized Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 33/78] media: davinci: vpif_capture: fix potential double free Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 34/78] KVM: arm64: Fix symbol dependency in __hyp_call_panic_nvhe Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 35/78] powerpc/spufs: add CONFIG_COREDUMP dependency Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 36/78] USB: sisusbvga: Fix a potential UB casued by left shifting a negative value Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 37/78] efi: provide empty efi_enter_virtual_mode implementation Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 38/78] Revert "ath10k: fix DMA related firmware crashes on multiple devices" Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 39/78] i2c: rcar: in slave mode, clear NACK earlier Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 40/78] usb: gadget: f_tcm: Fix some resource leaks in some error paths Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 41/78] jbd2: make sure jh have b_transaction set in refile/unfile_buffer Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 42/78] jbd2: abort journal if free a async write error metadata buffer Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 43/78] fs: prevent BUG_ON in submit_bh_wbc() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 44/78] s390/cio: add cond_resched() in the slow_eval_known_fn() loop Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 45/78] scsi: ufs: Fix possible infinite loop in ufshcd_hold Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 46/78] scsi: ufs: Improve interrupt handling for shared interrupts Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 47/78] net: gianfar: Add of_node_put() before goto statement Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 48/78] powerpc/perf: Fix soft lockups due to missed interrupt accounting Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 49/78] HID: i2c-hid: Always sleep 60ms after I2C_HID_PWR_ON commands Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 50/78] btrfs: fix space cache memory leak after transaction abort Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 51/78] fbcon: prevent user font height or width change from causing potential out-of-bounds access Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 52/78] USB: lvtest: return proper error code in probe Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 53/78] vt: defer kfree() of vc_screenbuf in vc_do_resize() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 54/78] vt_ioctl: change VT_RESIZEX ioctl to check for error return from vc_resize() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 55/78] serial: samsung: Removes the IRQ not found warning Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 56/78] serial: pl011: Fix oops on -EPROBE_DEFER Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 57/78] serial: pl011: Dont leak amba_ports entry on driver register error Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 58/78] serial: 8250: change lock order in serial8250_do_startup() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 59/78] writeback: Protect inode->i_io_list with inode->i_lock Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 60/78] writeback: Avoid skipping inode writeback Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 61/78] writeback: Fix sync livelock due to b_dirty_time processing Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 62/78] XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 63/78] xhci: Do warm-reset when both CAS and XDEV_RESUME are set Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 64/78] PM: sleep: core: Fix the handling of pending runtime resume requests Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 65/78] device property: Fix the secondary firmware node handling in set_primary_fwnode() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 66/78] USB: yurex: Fix bad gfp argument Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 67/78] usb: uas: Add quirk for PNY Pro Elite Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 68/78] USB: quirks: Add no-lpm quirk for another Raydium touchscreen Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 69/78] USB: Ignore UAS for JMicron JMS567 ATA/ATAPI Bridge Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 70/78] usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 71/78] overflow.h: Add allocation size calculation helpers Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 72/78] USB: gadget: u_f: add overflow checks to VLA macros Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 73/78] USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 74/78] USB: gadget: u_f: Unbreak offset calculation in VLAs Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 75/78] usb: storage: Add unusual_uas entry for Sony PSZ drives Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 76/78] btrfs: check the right error variable in btrfs_del_dir_entries_in_log Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 77/78] HID: hiddev: Fix slab-out-of-bounds write in hiddev_ioctl_usage() Greg Kroah-Hartman
2020-09-01 15:10 ` [PATCH 4.9 78/78] ALSA: usb-audio: Update documentation comment for MS2109 quirk Greg Kroah-Hartman
2020-09-01 22:25 ` [PATCH 4.9 00/78] 4.9.235-rc1 review Shuah Khan
2020-09-02 7:21 ` Naresh Kamboju
2020-09-02 16:46 ` Guenter Roeck
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