From: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
"Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
Subject: [PATCH review for 4.9 44/50] powerpc/perf: Add restrictions to PMC5 in power9 DD1
Date: Mon, 25 Sep 2017 01:12:57 +0000 [thread overview]
Message-ID: <20170925011225.10029-44-alexander.levin@verizon.com> (raw)
In-Reply-To: <20170925011225.10029-1-alexander.levin@verizon.com>
From: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
[ Upstream commit 8d911904f3ce412b20874a9c95f82009dcbb007c ]
PMC5 on POWER9 DD1 may not provide right counts in all
sampling scenarios, hence use PM_INST_DISP event instead
in PMC2 or PMC3 in preference.
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
---
arch/powerpc/perf/isa207-common.h | 4 ++++
arch/powerpc/perf/power9-pmu.c | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/perf/isa207-common.h b/arch/powerpc/perf/isa207-common.h
index 4d0a4e5017c2..8e6dd17fe603 100644
--- a/arch/powerpc/perf/isa207-common.h
+++ b/arch/powerpc/perf/isa207-common.h
@@ -201,6 +201,10 @@
CNST_PMC_VAL(1) | CNST_PMC_VAL(2) | CNST_PMC_VAL(3) | \
CNST_PMC_VAL(4) | CNST_PMC_VAL(5) | CNST_PMC_VAL(6) | CNST_NC_VAL
+/*
+ * Lets restrict use of PMC5 for instruction counting.
+ */
+#define P9_DD1_TEST_ADDER (ISA207_TEST_ADDER | CNST_PMC_VAL(5))
/* Bits in MMCR1 for PowerISA v2.07 */
#define MMCR1_UNIT_SHIFT(pmc) (60 - (4 * ((pmc) - 1)))
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 8e9a81967ff8..9abcd8f65504 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -295,7 +295,7 @@ static struct power_pmu power9_pmu = {
.name = "POWER9",
.n_counter = MAX_PMU_COUNTERS,
.add_fields = ISA207_ADD_FIELDS,
- .test_adder = ISA207_TEST_ADDER,
+ .test_adder = P9_DD1_TEST_ADDER,
.compute_mmcr = isa207_compute_mmcr,
.config_bhrb = power9_config_bhrb,
.bhrb_filter_map = power9_bhrb_filter_map,
--
2.11.0
next prev parent reply other threads:[~2017-09-25 1:14 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-25 1:12 [PATCH review for 4.9 01/50] xen-netback: Use GFP_ATOMIC to allocate hash Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 04/50] irqchip/crossbar: Fix incorrect type of local variables Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 02/50] locking/lockdep: Add nest_lock integrity test Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 03/50] watchdog: kempld: fix gcc-4.3 build Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 06/50] mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 05/50] initramfs: finish fput() before accessing any binary from initramfs Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 07/50] ALSA: hda: Add Geminilake HDMI codec ID Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 08/50] qed: Don't use attention PTT for configuring BW Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 09/50] mac80211: fix power saving clients handling in iwlwifi Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 12/50] netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 11/50] staging: vchiq_2835_arm: Make cache-line-size a required DT property Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 10/50] net/mlx4_en: fix overflow in mlx4_en_init_timestamp() Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 13/50] iio: adc: xilinx: Fix error handling Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 14/50] f2fs: do SSR for data when there is enough free space Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 15/50] sched/fair: Update rq clock before changing a task's CPU affinity Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 17/50] f2fs: do not wait for writeback in write_begin Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 16/50] Btrfs: send, fix failure to rename top level inode due to name collision Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 18/50] md/linear: shutup lockdep warnning Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 19/50] sparc64: Migrate hvcons irq to panicked cpu Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 20/50] net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 21/50] crypto: xts - Add ECB dependency Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 22/50] mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 23/50] ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 24/50] slub: do not merge cache if slub_debug contains a never-merge flag Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 27/50] drm/amdgpu: refuse to reserve io mem for split VRAM buffers Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 26/50] ASoC: mediatek: add I2C dependency for CS42XX8 Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 25/50] scsi: scsi_dh_emc: return success in clariion_std_inquiry() Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 28/50] net: mvpp2: release reference to txq_cpu[] entry after unmapping Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 30/50] qed: Reserve doorbell BAR space for present CPUs Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 29/50] qede: Prevent index problems in loopback test Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 31/50] qed: Read queue state before releasing buffer Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 32/50] i2c: at91: ensure state is restored after suspending Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 33/50] ceph: don't update_dentry_lease unless we actually got one Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 34/50] ceph: fix bogus endianness change in ceph_ioctl_set_layout Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 35/50] ceph: clean up unsafe d_parent accesses in build_dentry_path Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 36/50] uapi: fix linux/rds.h userspace compilation errors Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 39/50] IB/hfi1: Use static CTLE with Preset 6 for integrated HFIs Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 37/50] uapi: fix linux/mroute6.h userspace compilation errors Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 38/50] ibmvnic: Handle processing of CRQ messages in a tasklet Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 40/50] IB/hfi1: Allocate context data on memory node Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 42/50] hrtimer: Catch invalid clockids again Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 41/50] target/iscsi: Fix unsolicited data seq_end_offset calculation Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 43/50] nfsd/callback: Cleanup callback cred on shutdown Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` Levin, Alexander (Sasha Levin) [this message]
2017-09-25 1:12 ` [PATCH review for 4.9 45/50] drm/nouveau/gr/gf100-: fix ccache error logging Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 47/50] btmrvl: avoid double-disable_irq() race Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 46/50] regulator: core: Resolve supplies before disabling unused regulators Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 48/50] EDAC, mce_amd: Print IPID and Syndrome on a separate line Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 50/50] cpufreq: CPPC: add ACPI_PROCESSOR dependency Levin, Alexander (Sasha Levin)
2017-09-25 1:12 ` [PATCH review for 4.9 49/50] genirq: Clarify logic calculating bogus irqreturn_t values Levin, Alexander (Sasha Levin)
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