Paul Mackerras e51ee31e8a powerpc/perf_counters: Reduce stack usage of power_check_constraints ...

Michael Ellerman reported stack-frame size warnings being produced
for power_check_constraints(), which uses an 8*8 array of u64 and
two 8*8 arrays of unsigned long, which are currently allocated on the
stack, along with some other smaller variables.  These arrays come
to 1.5kB on 64-bit or 1kB on 32-bit, which is a bit too much for the
stack.

This fixes the problem by putting these arrays in the existing
per-cpu cpu_hw_counters struct.  This is OK because two of the call
sites have interrupts disabled already; for the third call site we
use get_cpu_var, which disables preemption, so we know we won't
get a context switch while we're in power_check_constraints().
Note that power_check_constraints() can be called during context
switch but is not called from interrupts.

Reported-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: <stable@kernel.org)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2009-09-11 11:27:59 +10:00

..

vdso32

powerpc: Enable GCOV

2009-08-20 10:29:28 +10:00

vdso64

powerpc: Enable GCOV

2009-08-20 10:29:28 +10:00

.gitignore

powerpc: Ignore generated vmlinux.lds in git

2008-10-07 14:26:18 +11:00

align.c

powerpc: Keep track of emulated instructions

2009-05-21 15:44:26 +10:00

asm-offsets.c

Merge commit 'paulus-perf/master' into next

2009-08-20 11:07:56 +10:00

audit.c

[PATCH] audit signal recipients

2007-05-11 05:38:25 -04:00

btext.c

powerpc: Use the common ascii hex helpers

2008-08-20 16:34:57 +10:00

cacheinfo.c

powerpc/cacheinfo: Rename cache_dir per-cpu variable

2009-01-13 14:48:02 +11:00

cacheinfo.h

powerpc: Rewrite sysfs processor cache info code

2009-01-08 16:25:10 +11:00

clock.c

[POWERPC] clk.h interface for platforms

2007-10-03 09:11:56 +10:00

compat_audit.c

[PATCH] add SIGNAL syscall class (v3)

2007-05-11 05:38:25 -04:00

cpu_setup_6xx.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

cpu_setup_44x.S

AMCC PPC 460SX redwood SoC platform initial framework

2009-02-14 14:41:29 -05:00

cpu_setup_fsl_booke.S

powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs

2009-06-15 21:45:30 -05:00

cpu_setup_pa6t.S

[POWERPC] pasemi: Enable one more hid bit

2007-04-24 21:31:49 +10:00

cpu_setup_ppc970.S

powerpc: Use LOAD_REG_IMMEDIATE only for constants on 64-bit

2008-09-15 11:08:35 -07:00

cputable.c

powerpc/book3e-64: Move the default cpu table entry

2009-08-28 14:24:13 +10:00

crash_dump.c

powerpc: Unify opcode definitions and support

2009-02-23 10:48:56 +11:00

crash.c

powerpc: Increase CRASH_HANDLER_MAX

2008-06-30 22:31:00 +10:00

dbell.c

powerpc: Add support for using doorbells for SMP IPI

2009-02-23 15:53:03 +11:00

dma-iommu.c

powerpc: use dma_map_ops struct

2009-08-28 14:24:10 +10:00

dma-swiotlb.c

powerpc: Handle SWIOTLB mapping error properly

2009-08-28 14:24:11 +10:00

dma.c

powerpc: Add CONFIG_DMA_API_DEBUG support

2009-08-28 14:24:11 +10:00

entry_32.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

entry_64.S

powerpc: Remaining 64-bit Book3E support

2009-08-20 10:25:11 +10:00

exceptions-64e.S

powerpc/book3e-64: Add support to initial_tlb_book3e for non-HES TLB

2009-08-28 14:24:14 +10:00

exceptions-64s.S

Merge commit 'paulus-perf/master' into next

2009-08-20 11:07:56 +10:00

firmware.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

fpu.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

ftrace.c

Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-06-20 10:56:46 -07:00

head_8xx.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_32.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_40x.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_44x.S

powerpc/mm: Cleanup handling of execute permission

2009-08-27 13:12:51 +10:00

head_64.S

powerpc: Remaining 64-bit Book3E support

2009-08-20 10:25:11 +10:00

head_booke.h

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_fsl_booke.S

powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT

2009-09-02 16:20:41 +10:00

ibmebus.c

powerpc: use dma_map_ops struct

2009-08-28 14:24:10 +10:00

idle_6xx.S

powerpc: Fix for getting CPU number in power_save_ppc32_restore()

2008-09-03 20:53:47 +10:00

idle_e500.S

powerpc: Fix for getting CPU number in power_save_ppc32_restore()

2008-09-03 20:53:47 +10:00

idle_power4.S

[POWERPC] powermac: Support G5 CPU hotplug

2007-05-07 20:31:13 +10:00

idle.c

powerpc: ftrace, do not latency trace idle

2008-11-20 10:51:15 -08:00

init_task.c

mm: consolidate init_mm definition

2009-06-16 19:47:28 -07:00

io.c

ftrace: support for PowerPC

2008-05-23 22:43:11 +02:00

iomap.c

[POWERPC] Add 64-bit resources support to pci_iomap

2007-09-20 07:36:52 -05:00

iommu.c

powerpc: Change u64/s64 to a long long integer type

2009-01-13 14:47:59 +11:00

irq.c

Merge commit 'origin/master' into next

2009-06-12 16:53:38 +10:00

isa-bridge.c

[POWERPC] Remove leftover printk in isa-bridge.c

2008-05-09 20:22:59 +10:00

kgdb.c

kgdb, x86, arm, mips, powerpc: ignore user space single stepping

2008-09-26 10:36:41 -05:00

kprobes.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-01-07 11:31:52 -08:00

l2cr_6xx.S

Convert files to UTF-8 and some cleanups

2007-10-19 23:21:04 +02:00

legacy_serial.c

powerpc/powermac: Fixup default serial port device for pmac_zilog

2008-07-28 16:30:53 +10:00

lparcfg.c

powerpc/pseries: Fix to handle slb resize across migration

2009-09-02 16:19:01 +10:00

machine_kexec_32.c

kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE

2008-08-15 08:35:42 -07:00

machine_kexec_64.c

powerpc/32: Setup OF properties for kdump

2008-12-23 15:13:29 +11:00

machine_kexec.c

powerpc: Allow mem=x cmdline to work with 4G+

2009-05-15 16:43:41 +10:00

Makefile

powerpc/pci: move pci_64.c device tree scanning code into pci-common.c

2009-08-28 14:24:15 +10:00

misc_32.S

powerpc: Fix __flush_icache_range on 44x

2009-08-27 13:12:52 +10:00

misc_64.S

powerpc: Move VMX and VSX asm code to vector.S

2009-06-09 16:46:25 +10:00

misc.S

powerpc: Use LOAD_REG_IMMEDIATE only for constants on 64-bit

2008-09-15 11:08:35 -07:00

module_32.c

powerpc/ppc32: ftrace, dynamic ftrace to handle modules

2008-11-20 10:52:53 -08:00

module_64.c

powerpc: Unify opcode definitions and support

2009-02-23 10:48:56 +11:00

module.c

module: cleanup FIXME comments about trimming exception table entries.

2009-06-12 21:47:05 +09:30

mpc7450-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

msi.c

powerpc/PCI: include pci.h in powerpc MSI implementation

2009-03-25 08:54:29 -07:00

nvram_64.c

[POWERPC] pseries: Eliminate global error_log_cnt variable

2007-08-17 11:01:52 +10:00

of_device.c

powerpc/of: Fix usage of dev_set_name() in of_device_alloc()

2009-06-26 16:55:35 +10:00

of_platform.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

paca.c

powerpc: Add PACA fields specific to 64-bit Book3E processors

2009-08-20 10:25:08 +10:00

pci_32.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

pci_64.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

pci_dn.c

powerpc/pci: Move pseries code into pseries platform specific area

2009-05-21 15:44:24 +10:00

pci_of_scan.c

powerpc/pci: move pci_64.c device tree scanning code into pci-common.c

2009-08-28 14:24:15 +10:00

pci-common.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

perf_callchain.c

perf_counter: powerpc: Add callchain support

2009-08-18 14:48:47 +10:00

perf_counter.c

powerpc/perf_counters: Reduce stack usage of power_check_constraints

2009-09-11 11:27:59 +10:00

pmc.c

[POWERPC] Made FSL Book-E PMC support more generic

2008-02-05 23:34:14 -06:00

power4-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

power5-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

power5+-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

power6-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

power7-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

ppc32.h

powerpc: Add VSX context save/restore, ptrace and signal support

2008-07-01 11:28:50 +10:00

ppc970-pmu.c

perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it

2009-08-06 13:55:09 +02:00

ppc_ksyms.c

powerpc: Export cacheable_memzero as its now used in a driver

2009-01-08 16:25:17 +11:00

ppc_save_regs.S

powerpc: Prepare xmon_save_regs for use with kdump

2008-12-23 15:13:28 +11:00

proc_ppc64.c

powerpc: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

process.c

powerpc: Clean ifdef usage in copy_thread()

2009-08-20 10:12:43 +10:00

prom_init_check.sh

powerpc: Print linux_banner in prom_init

2009-03-11 17:11:33 +11:00

prom_init.c

powerpc/prom_init: Evaluate mem kernel parameter for early allocation

2009-08-20 10:29:25 +10:00

prom_parse.c

powerpc: Fix of_node_put() exit path in of_irq_map_one()

2009-04-20 12:18:43 -06:00

prom.c

powerpc: Shield code specific to 64-bit server processors

2009-06-09 16:47:38 +10:00

ptrace32.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

ptrace.c

powerpc: Fix booke user_disable_single_step()

2009-07-15 17:41:45 +10:00

reloc_64.S

powerpc: Make the 64-bit kernel as a position-independent executable

2008-09-15 11:08:38 -07:00

rtas_flash.c

proc 2/2: remove struct proc_dir_entry::owner

2009-03-31 01:14:44 +04:00

rtas_pci.c

powerpc/pci: Clean up direct access to sysdata by RTAS

2009-05-21 15:44:23 +10:00

rtas-proc.c

[POWERPC] Fix sparse warnings in arch/powerpc/kernel

2008-05-14 22:31:59 +10:00

rtas-rtc.c

[PATCH] powerpc: reorg RTAS delay code

2006-06-09 21:21:06 +10:00

rtas.c

powerpc/pseries: Fix to handle slb resize across migration

2009-09-02 16:19:01 +10:00

setup_32.c

powerpc: Add irqtrace support for 32-bit powerpc

2009-06-26 14:37:27 +10:00

setup_64.c

powerpc: Remaining 64-bit Book3E support

2009-08-20 10:25:11 +10:00

setup-common.c

powerpc: Remove duplicated #include's

2009-04-07 15:18:58 +10:00

setup.h

[PATCH] powerpc: Make early xmon logic immune to location of early parsing

2006-05-19 15:02:12 +10:00

signal_32.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal_64.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal.h

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

smp-tbsync.c

powerpc: Silence software timebase sync

2008-11-05 22:08:28 +11:00

smp.c

powerpc/85xx: Fix SMP compile error and allow NULL for smp_ops

2009-09-11 11:27:57 +10:00

softemu8xx.c

Remove asm/a.out.h files for all architectures without a.out support.

2008-09-06 19:30:24 +01:00

stacktrace.c

powerpc: Removed duplicated include in stacktrace.c

2008-07-28 16:30:47 +10:00

suspend.c

PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures

2008-07-24 10:47:21 -07:00

swsusp_32.S

powerpc/mm: Introduce MMU features

2008-12-21 14:21:16 +11:00

swsusp_64.c

[POWERPC] powermac: Suspend to disk on G5

2007-05-07 20:31:14 +10:00

swsusp_asm64.S

powerpc: Fix 64-bit hibernation with 64k pages

2008-10-07 14:26:20 +11:00

swsusp.c

powerpc/mm: Split mmu_context handling

2008-12-21 14:21:15 +11:00

sys_ppc32.c

powerpc: Add compat_sys_truncate

2009-08-20 10:12:34 +10:00

syscalls.c

powerpc/mm: Add Strong Access Ordering support

2008-07-09 16:30:45 +10:00

sysfs.c

powerpc: Fix bug where perf_counters breaks oprofile

2009-09-11 11:27:58 +10:00

systbl_chk.c

[POWERPC] Fix a couple of copyright symbols

2008-01-25 22:52:50 +11:00

systbl_chk.sh

[POWERPC] Fix a couple of copyright symbols

2008-01-25 22:52:50 +11:00

systbl.S

[POWERPC] Align the sys_call_table

2007-10-11 14:36:47 +10:00

tau_6xx.c

on_each_cpu(): kill unused 'retry' parameter

2008-06-26 11:24:38 +02:00

time.c

powerpc: Properly start decrementer on BookE secondary CPUs

2009-08-28 14:25:04 +10:00

traps.c

powerpc: Add PTRACE_SINGLEBLOCK support

2009-06-09 13:29:25 +10:00

udbg_16550.c

powerpc/440: Fix warning early debug code

2009-06-26 16:55:35 +10:00

udbg.c

powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF

2009-03-11 17:11:34 +11:00

vdso.c

powerpc: Move 64bit VDSO to improve context switch performance

2009-08-20 10:12:24 +10:00

vecemu.c

…

vector.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

vio.c

powerpc: use dma_map_ops struct

2009-08-28 14:24:10 +10:00

vmlinux.lds.S

powerpc/vmlinux.lds: Move _edata down

2009-08-20 10:29:29 +10:00