smpboot is very creative with the ways to disable ioapic.
smpboot_clear_io_apic() smpboot_clear_io_apic_irqs() and
disable_ioapic_support() serve a similar purpose.
smpboot_clear_io_apic_irqs() is the most useless of all
functions as it clears a variable which has not been setup yet.
Aside of that it has the same ifdef mess and conditionals around the
ioapic related code, which can now be removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20150115211703.650280684@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Commit 725908110a1f ("s390: add SMT support") added a check for
CONFIG_ZFCPDUMP. But the Kconfig symbol ZFCPDUMP was removed in v3.16
through commit bf28a5970d ("s390/dump: Remove CONFIG_ZFCPDUMP"). So
this check will always evaluate to false. No one noticed probably
because the code also checks for CONFIG_CRASH_DUMP which "also enables
s390 zfcpdump".
Dump the unneeded check.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The multi-threading facility is introduced with the z13 processor family.
This patch adds code to detect the multi-threading facility. With the
facility enabled each core will surface multiple hardware threads to the
system. Each hardware threads looks like a normal CPU to the operating
system with all its registers and properties.
The SCLP interface reports the SMT topology indirectly via the maximum
thread id. Each reported CPU in the result of a read-scp-information
is a core representing a number of hardware threads.
To reflect the reduced CPU capacity if two hardware threads run on a
single core the MT utilization counter set is used to normalize the
raw cputime obtained by the CPU timer deltas. This scaled cputime is
reported via the taskstats interface. The normal /proc/stat numbers
are based on the raw cputime and are not affected by the normalization.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Avoid cache aliasing on z13 by aligning shared objects to multiples
of 512K. The virtual addresses of a page from a shared file needs
to have identical bits in the range 2^12 to 2^18.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Turning snoops on is the last step in CAPP recovery. Sapphire is expected to
have reinitialized the PHB and done the previous recovery steps.
Add mode argument to opal call to do this. Driver can turn snoops off although
it does not currently.
Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Add calls to the ps3_mm_set_repository_highmem() routine when the ps3
r1 highmem region is either created or destroyed.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Add the new routine ps3_mm_set_repository_highmem() that saves highmem info to
the LV1 hypervisor registry so that the info will be available to second stage
OS's loaded by petitboot/kexec. FreeBSD and some Linux derivatives use
this feature.
Also, move the existing ps3_mm_get_repository_highmem() routine up in
the source file.
This implementation of ps3_mm_set_repository_highmem() assumes the repository
will have a single highmem region entry (at index 0).
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
To avoid the need for preprocessor conditionals in C source files add a set of
empty inline repository highmem write routines to platform.h that are used when
CONFIG_PS3_REPOSITORY_WRITE is not defined.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
LPCR_PECE1 bit controls whether decrementer interrupts are allowed to
cause exit from power-saving mode. While waking up from winkle, restoring
LPCR with LPCR_PECE1 set (i.e Decrementer interrupts allowed) can cause
issue in the following scenario:
- All the threads in a core are offlined. The core enters deep winkle.
- Spurious interrupt wakes up a thread in the core. Here LPCR is restored
with LPCR_PECE1 bit set.
- Since it was a spurious interrupt on a offline thread, the thread clears
the interrupt and goes back to winkle.
- Here before the thread executes winkle and puts the core into deep winkle,
if a decrementer interrupt occurs on any of the sibling threads in the core
that thread wakes up.
- Since in offline loop we are flushing interrupt only in case of external
interrupt, the decrementer interrupt does not get flushed. So at this stage
the thread is stuck in this is loop of waking up at 0x100 due to decrementer
interrupt, not flushing the interrupt as only external interrupts get flushed,
entering winkle, waking up at 0x100 again.
Fix this by programming PORE to restore LPCR with LPCR_PECE1 bit
cleared when waking up from winkle.
Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Merge "DaVinci cleanups for v3.20" from Sekhar Nori:
Removes an unused function and the unused
support for CDCE949 clock generator.
* tag 'davinci-for-v3.20/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: Remove CDCE949 driver
ARM: davinci: serial.c: remove unused serial_read_reg()
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "Third Round of Renesas ARM Based SoC Updates for v3.20" from Simon
Horman:
* Special-case PM domains with memory-controllers
* tag 'renesas-soc3-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: R-Mobile: Special-case PM domains with memory-controllers
ARM: shmobile: R-Mobile: Generalize adding/looking up special PM domains
ARM: shmobile: R-Mobile: Consolidate rmobile_pd_suspend_*()
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "Second Round of Renesas ARM Based SoC Fixes for v3.19" from Simon
Horman:
* Instantiate GIC from C board code in legacy builds on r8a7778 and r8a7779
* tag 'renesas-soc-fixes2-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: r8a7779: Instantiate GIC from C board code in legacy builds
ARM: shmobile: r8a7778: Instantiate GIC from C board code in legacy builds
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "qcom DT changes for v3.20" from Kumar Gala:
Qualcomm ARM Based Device Tree Updates for v3.20
* Correct IPQ8064 tlmm interrupt
* Add Support for SD Card Detect for ifc6410 board
* tag 'qcom-dt-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
ARM: dts: qcom: Correct IPQ8064 tlmm interrupt
ARM: dts: qcom: Add Support for SD Card Detect for ifc6410 board
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "Second Round of Renesas ARM Based SoC Updates for v3.20" from Simon
Horman:
* Add DT support for PM domains
* tag 'renesas-soc2-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: R-Mobile: Add DT support for PM domains
ARM: shmobile: R-Mobile: Store SYSC base address in rmobile_pm_domain
ARM: shmobile: R-Mobile: Use generic_pm_domain.attach_dev() for pm_clk setup
Signed-off-by: Olof Johansson <olof@lixom.net>
ARM: OMAP2+: hwmod: first set of patches for v3.20
First set of OMAP2+ hwmod patches for Linux v3.20. These are mostly
fixes for warnings, although there's one DRA7xx patch that fixes
CONFIG_DEBUG_LL for AM572x/DRA7xx SoCs that use UART3 for console,
such as the BeagleBoard-X15.
These patches entered Linux-next starting with the next-20150121 tag.
Basic build, boot, and PM test results can be found here:
http://www.pwsan.com/omap/testlogs/omap-hwmod-a-for-v3.20/20150121142621/
Merge "omap device tree changes for v3.20" from Tony Lindgren:
Device tree changes for omaps. Mostly to add support for new
am437x-idk and update am437x-sk boards. Also enabling new
devices for multiple boards.
* tag 'omap-for-v3.20/dt-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (21 commits)
ARM: dts: omap3-gta04: Add handling for tv output
ARM: dts: cm-t3x: add NAND support
ARM: dts: am57xx-beagle-x15: Add GPIO controlled fan node
ARM: dts: am437x-idk: add gpio-based power key
ARM: dts: N950/N9: add twl_power
ARM: dts: am437x-sk: add power button binding
ARM: dts: add support for AM437x IDK
ARM: dts: am437x-gp-evm: add VPFE device tree data
ARM: dts: am437x-sk-evm: add VPFE device tree data
ARM: dts: am43x-epos-evm: add VPFE device tree data
ARM: dts: am4372: add VPFE DT node entries
ARM: dts: DRA7X: drop id property in pcie_phy
ARM: dts: omap3-n900: cleanup english
ARM: dts: am57xx-beagle-x15: Add dual ethernet
ARM: dts: am437x-sk: remove DSS pulls
ARM: dts: am437x-sk: remove internal i2c pullups
ARM: dts: am437x-sk: add explicit pinmux for both USB instances
ARM: dts: am437x-sk: remove ethernet pulls
ARM: dts: am437x-sk: add explicit MMC0 pinmux
ARM: dts: am437x-sk: remove internal pulls from QSPI
...
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "omap clean-up for v3.20" from Tony Lindgren:
Clean-up for omaps to remove dead code found with cppcheck after
we've made several SoCs to boot in device tree only mode.
* tag 'omap-for-v3.20/cleanup-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Remove unused ti81xx platform init code
ARM: OMAP3+: PRM: remove prm_get_reset_sources declaration from headers
ARM: OMAP2: CM: remove unused PLL functions
ARM: OMAP2: clock: remove unused apll code
ARM: OMAP: dma.c: Remove unused function
ARM: OMAP1: timer32k.c: Remove unused function
ARM: OMAP1: irq.c: Remove unused function
ARM: OMAP2+: omap-pm-noop.c: Remove some unused functions
ARM: OMAP2+: voltage: Remove some unused functions
ARM: OMAP2+: powerdomain.c: Remove some unused functions
ARM: OMAP2+: omap_hwmod.c: Remove some unused functions
ARM: OMAP2+: dpll44xx.c: Remove unused function
ARM: OMAP2+: cm33xx.c: Remove some unused functions
ARM: OMAP2+: clkt2xxx_apll.c: Remove some unused functions
Signed-off-by: Olof Johansson <olof@lixom.net>
Merge "omap non-urgent fixes for v3.20" from Tony Lindgren:
Non-urgent fixes for omap variant dm816x that has been in a sorry
broken half merged state for a few years now. This gets us to the
point where we can boot it properly once the related SoC data is
added. Note that we've already made dm816x device tree only by
removing the known broken board file.
* tag 'omap-for-v3.20/fixes-not-urgent-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Disable omap3 PM init for ti81xx
ARM: OMAP2+: Fix reboot for 81xx
ARM: OMAP2+: Fix dm814 and dm816 for clocks and timer init
ARM: OMAP2+: Fix ti81xx class type
ARM: OMAP2+: Fix ti81xx devtype
ARM: OMAP2+: Fix error handling for omap2_clk_enable_init_clocks
Signed-off-by: Olof Johansson <olof@lixom.net>
The Kconfig symbol DEBUG_MVEBU_UART_ALTERNATE was renamed to
DEBUG_MVEBU_UART0_ALTERNATE. And the symbol DEBUG_MVEBU_UART1_ALTERNATE
was added to allow UART1 as a DEBUG_LL target. Make the comment at the
top of this DTS reflect those changes.
Since we're touching this DTS add comments to show which blocks describe
UART0 and UART1.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
