From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Christophe Leroy <christophe.leroy@c-s.fr>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
linuxppc-dev@lists.ozlabs.org,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Sasha Levin <alexander.levin@microsoft.com>
Subject: [PATCH 4.9 31/70] perf tools: Allow overriding MAX_NR_CPUS at compile time
Date: Tue, 18 Sep 2018 00:42:04 +0200 [thread overview]
Message-ID: <20180917211651.642910982@linuxfoundation.org> (raw)
In-Reply-To: <20180917211649.099135838@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christophe Leroy <christophe.leroy@c-s.fr>
[ Upstream commit 21b8732eb4479b579bda9ee38e62b2c312c2a0e5 ]
After update of kernel, the perf tool doesn't run anymore on my 32MB RAM
powerpc board, but still runs on a 128MB RAM board:
~# strace perf
execve("/usr/sbin/perf", ["perf"], [/* 12 vars */]) = -1 ENOMEM (Cannot allocate memory)
--- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} ---
+++ killed by SIGSEGV +++
Segmentation fault
objdump -x shows that .bss section has a huge size of 24Mbytes:
27 .bss 016baca8 101cebb8 101cebb8 001cd988 2**3
With especially the following objects having quite big size:
10205f80 l O .bss 00140000 runtime_cycles_stats
10345f80 l O .bss 00140000 runtime_stalled_cycles_front_stats
10485f80 l O .bss 00140000 runtime_stalled_cycles_back_stats
105c5f80 l O .bss 00140000 runtime_branches_stats
10705f80 l O .bss 00140000 runtime_cacherefs_stats
10845f80 l O .bss 00140000 runtime_l1_dcache_stats
10985f80 l O .bss 00140000 runtime_l1_icache_stats
10ac5f80 l O .bss 00140000 runtime_ll_cache_stats
10c05f80 l O .bss 00140000 runtime_itlb_cache_stats
10d45f80 l O .bss 00140000 runtime_dtlb_cache_stats
10e85f80 l O .bss 00140000 runtime_cycles_in_tx_stats
10fc5f80 l O .bss 00140000 runtime_transaction_stats
11105f80 l O .bss 00140000 runtime_elision_stats
11245f80 l O .bss 00140000 runtime_topdown_total_slots
11385f80 l O .bss 00140000 runtime_topdown_slots_retired
114c5f80 l O .bss 00140000 runtime_topdown_slots_issued
11605f80 l O .bss 00140000 runtime_topdown_fetch_bubbles
11745f80 l O .bss 00140000 runtime_topdown_recovery_bubbles
This is due to commit 4d255766d28b1 ("perf: Bump max number of cpus
to 1024"), because many tables are sized with MAX_NR_CPUS
This patch gives the opportunity to redefine MAX_NR_CPUS via
$ make EXTRA_CFLAGS=-DMAX_NR_CPUS=1
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20170922112043.8349468C57@po15668-vm-win7.idsi0.si.c-s.fr
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/perf/perf.h | 2 ++
1 file changed, 2 insertions(+)
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -22,7 +22,9 @@ static inline unsigned long long rdclock
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}
+#ifndef MAX_NR_CPUS
#define MAX_NR_CPUS 1024
+#endif
extern const char *input_name;
extern bool perf_host, perf_guest;
next prev parent reply other threads:[~2018-09-17 22:54 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 22:41 [PATCH 4.9 00/70] 4.9.128-stable review Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 01/70] i2c: xiic: Make the start and the byte count write atomic Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 02/70] i2c: i801: fix DNVs SMBCTRL register offset Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 03/70] KVM: s390: vsie: copy wrapping keys to right place Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 04/70] ALSA: hda - Fix cancel_work_sync() stall from jackpoll work Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 05/70] cfq: Give a chance for arming slice idle timer in case of group_idle Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 06/70] kthread: Fix use-after-free if kthread fork fails Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 07/70] kthread: fix boot hang (regression) on MIPS/OpenRISC Greg Kroah-Hartman
2018-09-17 22:41 ` [OpenRISC] " Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 08/70] staging: rt5208: Fix a sleep-in-atomic bug in xd_copy_page Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 09/70] staging/rts5208: Fix read overflow in memcpy Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 10/70] IB/rxe: do not copy extra stack memory to skb Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 11/70] block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 12/70] nl80211: fix null-ptr dereference on invalid mesh configuration Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 13/70] locking/rwsem-xadd: Fix missed wakeup due to reordering of load Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 14/70] selinux: use GFP_NOWAIT in the AVC kmem_caches Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 15/70] locking/osq_lock: Fix osq_lock queue corruption Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 16/70] mm, vmscan: clear PGDAT_WRITEBACK when zone is balanced Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 17/70] mm: remove seemingly spurious reclaimability check from laptop_mode gating Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 18/70] ARC: [plat-axs*]: Enable SWAP Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 19/70] misc: mic: SCIF Fix scif_get_new_port() error handling Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 20/70] ethtool: Remove trailing semicolon for static inline Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 21/70] Bluetooth: h5: Fix missing dependency on BT_HCIUART_SERDEV Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 22/70] gpio: tegra: Move driver registration to subsys_init level Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 23/70] net: phy: Fix the register offsets in Broadcom iProc mdio mux driver Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 24/70] scsi: target: fix __transport_register_session locking Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 25/70] md/raid5: fix data corruption of replacements after originals dropped Greg Kroah-Hartman
2018-09-17 22:41 ` [PATCH 4.9 26/70] timers: Clear timer_base::must_forward_clk with timer_base::lock held Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 27/70] misc: ti-st: Fix memory leak in the error path of probe() Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 28/70] uio: potential double frees if __uio_register_device() fails Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 29/70] tty: rocket: Fix possible buffer overwrite on register_PCI Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 30/70] f2fs: do not set free of current section Greg Kroah-Hartman
2018-09-17 22:42 ` Greg Kroah-Hartman [this message]
2018-09-17 22:42 ` [PATCH 4.9 32/70] NFSv4.0 fix client reference leak in callback Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 33/70] macintosh/via-pmu: Add missing mmio accessors Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 34/70] ath9k: report tx status on EOSP Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 35/70] ath9k_hw: fix channel maximum power level test Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 36/70] ath10k: prevent active scans on potential unusable channels Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 37/70] wlcore: Set rx_status boottime_ns field on rx Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 38/70] MIPS: Fix ISA virt/bus conversion for non-zero PHYS_OFFSET Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 39/70] ata: libahci: Correct setting of DEVSLP register Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 40/70] scsi: 3ware: fix return 0 on the error path of probe Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 41/70] ath10k: disable bundle mgmt tx completion event support Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 42/70] Bluetooth: hidp: Fix handling of strncpy for hid->name information Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 43/70] x86/mm: Remove in_nmi() warning from vmalloc_fault() Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 44/70] gpio: ml-ioh: Fix buffer underwrite on probe error path Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 45/70] net: mvneta: fix mtu change on port without link Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 46/70] f2fs: try grabbing node page lock aggressively in sync scenario Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 47/70] f2fs: fix to skip GC if type in SSA and SIT is inconsistent Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 48/70] tpm_tis_spi: Pass the SPI IRQ down to the driver Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 49/70] tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 50/70] f2fs: fix to do sanity check with reserved blkaddr of inline inode Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 51/70] MIPS: Octeon: add missing of_node_put() Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 52/70] MIPS: generic: fix " Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 53/70] net: dcb: For wild-card lookups, use priority -1, not 0 Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 54/70] Input: atmel_mxt_ts - only use first T9 instance Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 55/70] media: s5p-mfc: Fix buffer look up in s5p_mfc_handle_frame_{new, copy_time} functions Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 56/70] partitions/aix: append null character to print data from disk Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 57/70] partitions/aix: fix usage of uninitialized lv_info and lvname structures Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 58/70] media: helene: fix xtal frequency setting at power on Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 59/70] f2fs: Fix uninitialized return in f2fs_ioc_shutdown() Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 60/70] iommu/ipmmu-vmsa: Fix allocation in atomic context Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 61/70] mfd: ti_am335x_tscadc: Fix struct clk memory leak Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 62/70] f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 63/70] NFSv4.1: Fix a potential layoutget/layoutrecall deadlock Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 64/70] MIPS: WARN_ON invalid DMA cache maintenance, not BUG_ON Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 65/70] RDMA/cma: Do not ignore net namespace for unbound cm_id Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 66/70] xhci: Fix use-after-free in xhci_free_virt_device Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 67/70] netfilter: x_tables: avoid stack-out-of-bounds read in xt_copy_counters_from_user Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 68/70] mtd: ubi: wl: Fix error return code in ubi_wl_init() Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 69/70] autofs: fix autofs_sbi() does not check super block type Greg Kroah-Hartman
2018-09-17 22:42 ` [PATCH 4.9 70/70] mm: get rid of vmacache_flush_all() entirely Greg Kroah-Hartman
2018-09-17 23:59 ` [PATCH 4.9 00/70] 4.9.128-stable review Nathan Chancellor
2018-09-18 16:20 ` Guenter Roeck
2018-09-18 16:54 ` Naresh Kamboju
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