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linux/arch/powerpc/kernel
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Paul Mackerras 8a7b8cb91f perf_counter: powerpc: Implement interrupt throttling 
This implements interrupt throttling on powerpc.  Since we don't have
individual count enable/disable or interrupt enable/disable controls
per counter, this simply sets the hardware counter to 0, meaning that
it will not interrupt again until it has counted 2^31 counts, which
will take at least 2^30 cycles assuming a maximum of 2 counts per
cycle.  Also, we set counter->hw.period_left to the maximum possible
value (2^63 - 1), so we won't report overflows for this counter for
the forseeable future.

The unthrottle operation restores counter->hw.period_left and the
hardware counter so that we will once again report a counter overflow
after counter->hw.irq_period counts.

[ Impact: new perfcounters robustness feature on PowerPC ]

Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <18971.35823.643362.446774@cargo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-26 09:43:59 +02:00
..
vdso32
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
vdso64
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
.gitignore
powerpc: Ignore generated vmlinux.lds in git
2008-10-07 14:26:18 +11:00
align.c
powerpc: Fix load/store float double alignment handler
2009-02-26 14:02:53 +11:00
asm-offsets.c
Merge branch 'linus' into perfcounters/core-v2
2009-04-06 09:02:57 +02:00
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/mm: e300c2/c3/c4 TLB errata workaround
2009-03-24 13:47:32 +11:00
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: Cleanup init/exception setup to be runtime
2009-01-28 18:16:50 -06:00
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/pseries: Really fix the oprofile CPU type on pseries
2009-05-15 16:43:42 +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: Change u64/s64 to a long long integer type
2009-01-13 14:47:59 +11:00
dma.c
dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
2009-04-07 08:31:11 -07:00
entry_32.S
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
entry_64.S
Merge branch 'linus' into perfcounters/core-v2
2009-04-06 09:02:57 +02:00
firmware.c
…
fpu.S
powerpc: Disable VSX or current process in giveup_fpu/altivec
2009-04-07 15:18:59 +10:00
ftrace.c
powerpc/ftrace: Fix printf format warning
2009-04-07 15:19:00 +10:00
head_8xx.S
powerpc: convert to use __HEAD and HEAD_TEXT macros.
2009-04-26 09:20:38 -07:00
head_32.S
powerpc: convert to use __HEAD and HEAD_TEXT macros.
2009-04-26 09:20:38 -07:00
head_40x.S
powerpc: convert to use __HEAD and HEAD_TEXT macros.
2009-04-26 09:20:38 -07:00
head_44x.S
powerpc: convert to use __HEAD and HEAD_TEXT macros.
2009-04-26 09:20:38 -07:00
head_64.S
powerpc/kconfig: Kill PPC_MULTIPLATFORM
2009-03-11 17:11:35 +11:00
head_booke.h
Merge commit 'jwb/next' into next
2009-03-03 13:30:03 +11:00
head_fsl_booke.S
powerpc: convert to use __HEAD and HEAD_TEXT macros.
2009-04-26 09:20:38 -07:00
ibmebus.c
powerpc: struct device - replace bus_id with dev_name(), dev_set_name()
2008-12-16 15:53:38 +11:00
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
take init_fs to saner place
2008-12-31 18:07:42 -05:00
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 'v2.6.30-rc1' into perfcounters/core
2009-04-08 10:35:30 +02:00
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: Add dispatch dispersion statistics
2009-04-07 15:18:59 +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
Merge branch 'linus' into perfcounters/core-v2
2009-04-06 09:02:57 +02:00
misc_32.S
powerpc/44x: Support 16K/64K base page sizes on 44x
2008-12-29 09:53:25 +11:00
misc_64.S
powerpc: Disable VSX or current process in giveup_fpu/altivec
2009-04-07 15:18:59 +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
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
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: struct device - replace bus_id with dev_name(), dev_set_name()
2008-12-16 15:53:38 +11:00
of_platform.c
dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
2009-04-07 08:31:11 -07:00
paca.c
powerpc: Update page-in counter for CMM
2008-11-05 22:08:28 +11:00
pci_32.c
powerpc/pci: Fix PCI<->OF matching of old style multifunc devices
2009-02-23 10:48:57 +11:00
pci_64.c
powerpc: Fix PCI ROM access
2009-05-15 16:43:42 +10:00
pci_dn.c
[POWERPC] iSeries: eliminate pci_dn bussubno
2008-01-17 14:57:05 +11:00
pci-common.c
powerpc: Fix PCI ROM access
2009-05-15 16:43:42 +10:00
perf_counter.c
perf_counter: powerpc: Implement interrupt throttling
2009-05-26 09:43:59 +02:00
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: use u64 for event codes internally
2009-05-15 16:38:55 +02:00
power5-pmu.c
perf_counter: powerpc: use u64 for event codes internally
2009-05-15 16:38:55 +02:00
power5+-pmu.c
perf_counter: powerpc: supply more precise information on counter overflow events
2009-05-15 16:38:57 +02:00
power6-pmu.c
perf_counter: powerpc: supply more precise information on counter overflow events
2009-05-15 16:38:57 +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: use u64 for event codes internally
2009-05-15 16:38:55 +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
Simplify copy_thread()
2009-04-02 19:04:51 -07:00
prom_init_check.sh
powerpc: Print linux_banner in prom_init
2009-03-11 17:11:33 +11:00
prom_init.c
powerpc/pseries: Fix ibm,client-architecture comment
2009-04-07 15:18:59 +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: Allow mem=x cmdline to work with 4G+
2009-05-15 16:43:41 +10:00
ptrace32.c
powerpc: Fix ptrace compat wrapper for FPU register access
2009-04-07 15:19:00 +10:00
ptrace.c
powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs
2008-07-30 15:26:54 +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: Fix various pseries PCI hotplug issues
2008-11-06 09:31:52 +11:00
rtas-proc.c
[POWERPC] Fix sparse warnings in arch/powerpc/kernel
2008-05-14 22:31:59 +10:00
rtas-rtc.c
…
rtas.c
powerpc/pseries: Fix partition migration hang under load
2009-02-23 15:53:04 +11:00
setup_32.c
powerpc/32: Wire up the trampoline code for kdump
2008-12-23 15:13:29 +11:00
setup_64.c
powerpc/mm: Introduce early_init_mmu() on 64-bit
2009-03-24 13:47:34 +11:00
setup-common.c
powerpc: Remove duplicated #include's
2009-04-07 15:18:58 +10:00
setup.h
…
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
Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-02 11:44:09 -08:00
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
compat: generic compat get/settimeofday
2008-10-16 11:21:33 -07:00
syscalls.c
powerpc/mm: Add Strong Access Ordering support
2008-07-09 16:30:45 +10:00
sysfs.c
powerpc: Fix bugs introduced by sysfs changes
2009-03-27 16:58:24 +11:00
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
clocksource: pass clocksource to read() callback
2009-04-21 13:41:47 -07:00
traps.c
powerpc: Add support for using doorbells for SMP IPI
2009-02-23 15:53:03 +11:00
udbg_16550.c
powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF
2009-03-11 17:11:34 +11:00
udbg.c
powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF
2009-03-11 17:11:34 +11:00
vdso.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-12-28 16:54:33 -08:00
vecemu.c
…
vector.S
…
vio.c
workqueue: add to_delayed_work() helper function
2009-04-02 19:04:50 -07:00
vmlinux.lds.S
powerpc: Revert switch to TEXT_TEXT in linker script
2009-04-28 15:55:14 -07:00