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Davide Libenzi 4d672e7ac7 timerfd: new timerfd API 
This is the new timerfd API as it is implemented by the following patch:

int timerfd_create(int clockid, int flags);
int timerfd_settime(int ufd, int flags,
		    const struct itimerspec *utmr,
		    struct itimerspec *otmr);
int timerfd_gettime(int ufd, struct itimerspec *otmr);

The timerfd_create() API creates an un-programmed timerfd fd.  The "clockid"
parameter can be either CLOCK_MONOTONIC or CLOCK_REALTIME.

The timerfd_settime() API give new settings by the timerfd fd, by optionally
retrieving the previous expiration time (in case the "otmr" parameter is not
NULL).

The time value specified in "utmr" is absolute, if the TFD_TIMER_ABSTIME bit
is set in the "flags" parameter.  Otherwise it's a relative time.

The timerfd_gettime() API returns the next expiration time of the timer, or
{0, 0} if the timerfd has not been set yet.

Like the previous timerfd API implementation, read(2) and poll(2) are
supported (with the same interface).  Here's a simple test program I used to
exercise the new timerfd APIs:

http://www.xmailserver.org/timerfd-test2.c

[akpm@linux-foundation.org: coding-style cleanups]
[akpm@linux-foundation.org: fix ia64 build]
[akpm@linux-foundation.org: fix m68k build]
[akpm@linux-foundation.org: fix mips build]
[akpm@linux-foundation.org: fix alpha, arm, blackfin, cris, m68k, s390, sparc and sparc64 builds]
[heiko.carstens@de.ibm.com: fix s390]
[akpm@linux-foundation.org: fix powerpc build]
[akpm@linux-foundation.org: fix sparc64 more]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:07 -08:00
..
iseries [POWERPC] include/asm-powerpc/: Spelling fixes 2007-12-20 16:17:44 +11:00
8xx_immap.h [POWERPC] include/asm-powerpc/: Spelling fixes 2007-12-20 16:17:44 +11:00
8253pit.h
a.out.h arch: personality independent stack top 2007-07-19 10:04:45 -07:00
abs_addr.h
agp.h x86: remove flush_agp_mappings() 2008-01-30 13:34:07 +01:00
asm-compat.h [POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=y 2007-04-13 03:55:13 +10:00
atomic.h [POWERPC] Implement atomic{, 64}_{read, write}() without volatile 2007-08-17 11:01:58 +10:00
auxvec.h
backlight.h
bitops.h ext4: Add ext4_find_next_bit() 2008-01-28 23:58:27 -05:00
bootx.h
btext.h
bug.h Fix WARN_ON() on bitfield ops 2007-07-31 21:12:07 -07:00
bugs.h
byteorder.h
cache.h [POWERPC] Add __read_mostly support for powerpc 2007-07-10 22:00:56 +10:00
cacheflush.h [POWERPC] DEBUG_PAGEALLOC for 32-bit 2007-04-13 04:09:39 +10:00
cell-pmu.h [POWERPC] cell: add cbe_node_to_cpu function 2007-04-23 21:44:38 +02:00
cell-regs.h [POWERPC] cell: Add Cell memory controller register defs and expose it 2007-10-09 21:01:56 +10:00
checksum.h [NET]: POWERPC checksum annotations and cleanups. 2006-12-02 21:23:20 -08:00
clk_interface.h [POWERPC] clk.h interface for platforms 2007-10-03 09:11:56 +10:00
compat.h asm-*/compat.h: fix typo in comment 2008-02-03 16:32:51 +02:00
cpm.h [POWERPC] CPM: Move definition of buffer descriptor to cpm.h 2008-01-28 08:31:06 -06:00
cpm1.h [POWERPC] CPM: Move definition of buffer descriptor to cpm.h 2008-01-28 08:31:06 -06:00
cpm2.h [POWERPC] CPM: Move definition of buffer descriptor to cpm.h 2008-01-28 08:31:06 -06:00
cputable.h [POWERPC] Reworking machine check handling and Fix 440/440A 2007-12-23 13:11:59 -06:00
cputhreads.h [POWERPC] Cleanup SMT thread handling 2007-12-03 13:56:25 +11:00
cputime.h
current.h [POWERPC] Include stddef.h in asm-powerpc/current.h to get offsetof 2007-03-09 15:03:24 +11:00
dbdma.h [POWERPC] Xserve cpu-meter driver 2006-12-04 20:39:30 +11:00
dcr-mmio.h Use dcr_host_t.base in dcr_unmap() 2007-10-15 14:29:49 -04:00
dcr-native.h [POWERPC] 4xx: Improve support for 4xx indirect DCRs 2007-12-23 13:12:11 -06:00
dcr-regs.h [POWERPC] 4xx: Improve support for 4xx indirect DCRs 2007-12-23 13:12:11 -06:00
dcr.h [POWERPC] Compile fixes for arch/powerpc dcr code 2007-02-07 14:03:23 +11:00
delay.h
device.h [POWERPC] Refactor 64 bits DMA operations 2006-12-04 20:38:40 +11:00
div64.h
dma-mapping.h [POWERPC] Add set_dma_ops() to match get_dma_ops() 2008-01-31 12:11:09 +11:00
dma.h
edac.h [POWERPC] EDAC ECC software scrubber 2007-03-09 15:03:25 +11:00
eeh.h [POWERPC] Merge 32 and 64 bits asm-powerpc/io.h 2006-12-04 20:39:05 +11:00
eeh_event.h [POWERPC] EEH: rm un-needed data 2007-03-22 22:52:55 +11:00
elf.h increase AT_VECTOR_SIZE to terminate saved_auxv properly 2007-10-17 08:43:00 -07:00
emergency-restart.h
errno.h
exception.h [POWERPC] Move lowlevel runlatch calls under cpu feature control 2007-09-14 01:33:22 +10:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h
firmware.h [POWERPC] celleb: Add support for native CBE 2007-12-11 13:34:40 +11:00
floppy.h cleanup floppy.h 2007-10-17 08:42:55 -07:00
fs_pd.h [POWERPC] 85xx: Killed <asm/mpc85xx.h> 2007-10-11 09:14:31 -05:00
futex.h [PATCH] mm: pagefault_{disable,enable}() 2006-12-07 08:39:21 -08:00
grackle.h
hardirq.h
heathrow.h
highmem.h [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need 2007-08-22 22:43:29 -05:00
hvcall.h [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number 2007-07-11 13:24:40 +10:00
hvconsole.h
hvcserver.h
hw_irq.h powerpc: fixup hard_irq_disable semantics 2007-05-11 08:29:34 -07:00
hydra.h [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need 2007-08-22 22:43:29 -05:00
i8259.h [POWERPC] Fix CHRP platforms with only 8259 2006-10-25 13:49:22 +10:00
ibmebus.h [POWERPC] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers 2007-10-17 22:30:08 +10:00
ide.h ide: remove stale ide.h "configuration options" 2008-01-25 22:17:08 +01:00
immap_86xx.h [POWERPC] 86xx: fix guts_set_dmacr() and add guts_set_pmuxcr_dma() to immap_86xx.h 2007-12-11 13:57:18 -06:00
immap_cpm2.h [POWERPC] cpm2: Infrastructure code cleanup. 2007-10-04 11:02:04 -05:00
immap_qe.h [POWERPC] QE: Add ability to upload QE firmware 2008-01-23 19:34:06 -06:00
io-defs.h [POWERPC] Merge 32 and 64 bits asm-powerpc/io.h 2006-12-04 20:39:05 +11:00
io.h [POWERPC] Make isa_mem_base common to 32 and 64 bits 2007-12-11 15:43:34 +11:00
ioctl.h
ioctls.h
iommu.h [POWERPC] iommu_free_table doesn't need the device_node 2007-12-11 13:41:33 +11:00
ipcbuf.h
ipic.h [POWERPC] ipic: add new interrupts introduced by new chip 2007-12-11 13:57:18 -06:00
irq.h [POWERPC] 86xx: Remove unused IRQ defines 2008-01-28 09:19:16 -06:00
irq_regs.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
irqflags.h
Kbuild remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
kdebug.h x86: optimize page faults like all other achitectures and kill notifier cruft 2007-10-16 09:42:50 -07:00
kdump.h
kexec.h [POWERPC] kdump shutdown hook support 2008-01-25 22:52:50 +11:00
keylargo.h
kgdb.h [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need 2007-08-22 22:43:29 -05:00
kmap_types.h
kprobes.h kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
libata-portmap.h Fix Maple PATA IRQ assignment. 2007-01-26 17:27:40 -05:00
linkage.h
lmb.h [POWERPC] Fix handling of memreserve if the range lands in highmem 2008-01-23 19:29:08 -06:00
local.h local_t: powerpc extension 2007-05-08 11:15:20 -07:00
lppaca.h [POWERPC] Donate idle CPU cycles on dedicated partitions 2007-06-14 22:29:58 +10:00
lv1call.h [POWERPC] PS3: System-bus rework 2007-06-28 19:16:38 +10:00
machdep.h [POWERPC] Implement arch disable/enable irq hooks. 2007-12-21 22:13:35 +11:00
macio.h
mc146818rtc.h
mediabay.h
mman.h
mmu-8xx.h [POWERPC] Split out asm-ppc/mmu.h portions for PowerPC 8xx 2007-07-03 03:00:28 -05:00
mmu-40x.h [POWERPC] 40x MMU 2007-08-20 07:28:48 -05:00
mmu-44x.h [POWERPC] Remove fixup_bigphys_addr() for arch/powerpc to avoid link error 2007-05-17 21:11:13 +10:00
mmu-fsl-booke.h [POWERPC] Split out asm-ppc/mmu.h portions for Freescale Book-E 2007-07-03 03:00:16 -05:00
mmu-hash32.h [POWERPC] Kill typedef-ed structs for hash PTEs and BATs 2007-06-14 22:30:16 +10:00
mmu-hash64.h [POWERPC] Provide a way to protect 4k subpages when using 64k pages 2008-01-24 10:06:01 +11:00
mmu.h [POWERPC] 40x MMU 2007-08-20 07:28:48 -05:00
mmu_context.h remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
mmzone.h [POWERPC] We don't define CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID 2007-05-10 21:28:13 +10:00
module.h [POWERPC] Generic BUG for powerpc 2006-12-11 16:35:07 +11:00
mpc8xx.h [POWERPC] 8xx: Get rid of conditional includes of board specific setup 2008-01-28 08:31:04 -06:00
mpc52xx.h [POWERPC] Add common clock setting routine mpc52xx_psc_set_clkdiv() 2008-01-26 15:32:18 -07:00
mpc52xx_psc.h [POWERPC] Separate MPC52xx PSC FIFO registers from rest of PSC 2008-01-21 11:01:32 -07:00
mpc86xx.h [POWERPC] kill isa_{io,mem}_base definitions for !PCI 2007-06-29 01:56:43 -05:00
mpc8260.h [POWERPC] 82xx: Embedded Planet EP8248E support 2008-01-23 19:34:43 -06:00
mpic.h [POWERPC] pasemi: Distribute interrupts evenly across cpus 2007-12-28 09:22:25 -06:00
msgbuf.h
mutex.h
namei.h
nvram.h [POWERPC] Cleanup calling mmio_nvram_init 2007-12-20 16:15:27 +11:00
of_device.h [POWERPC] Move of_device allocation into of_device.[ch] 2007-10-17 22:30:07 +10:00
of_platform.h [POWERPC] Enable RTC for Ebony and Walnut (v2) 2008-01-25 07:07:26 -06:00
ohare.h
oprofile_impl.h [CELL] oprofile: add support to OProfile for profiling CELL BE SPUs 2007-07-20 21:42:24 +02:00
paca.h powerpc: Remove obsolete prototype 2007-10-20 00:36:33 +02:00
page.h fix 'dynreloc miscount' link error on Powerpc 2007-07-26 11:35:18 -07:00
page_32.h [POWERPC] Fix kmalloc alignment on non-coherent DMA platforms 2007-11-20 11:37:43 +11:00
page_64.h [POWERPC] Use 1TB segments 2007-10-12 14:05:17 +10:00
param.h
parport.h parport->dev driver model support 2007-05-08 11:15:05 -07:00
pasemi_dma.h pasemi: DMA engine management library 2008-01-28 15:04:21 -08:00
pci-bridge.h [POWERPC] Remove update_bridge_resource 2008-01-23 19:32:30 -06:00
pci.h [POWERPC] Merge PCI resource allocation & assignment 2007-12-20 16:18:09 +11:00
percpu.h POWERPC: use generic per cpu 2008-01-30 23:27:58 +01:00
pgalloc-32.h [POWERPC] Remove use of 4level-fixup.h for ppc32 2007-05-08 13:40:31 +10:00
pgalloc-64.h [POWERPC] Provide a way to protect 4k subpages when using 64k pages 2008-01-24 10:06:01 +11:00
pgalloc.h [POWERPC] Remove arch/powerpc's dependence on asm-ppc/pg{alloc,table}.h 2007-05-02 20:04:30 +10:00
pgtable-4k.h [POWERPC] Size swapper_pg_dir correctly 2007-09-19 15:25:34 +10:00
pgtable-64k.h [POWERPC] Provide a way to protect 4k subpages when using 64k pages 2008-01-24 10:06:01 +11:00
pgtable-ppc32.h [POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKE 2007-12-06 13:11:04 -06:00
pgtable-ppc64.h ppc64: SPARSEMEM_VMEMMAP support 2007-10-16 09:42:51 -07:00
pgtable.h [POWERPC] Start factoring pgtable-ppc32.h and pgtable-ppc64.h 2007-06-14 22:30:15 +10:00
pmac_feature.h [POWERPC] Change include protections to ASM_POWERPC 2007-05-17 21:10:15 +10:00
pmac_low_i2c.h
pmac_pfunc.h
pmc.h [POWERPC] pasemi: PA6T oprofile support 2007-04-24 21:31:51 +10:00
pmi.h [CELL] pmi: remove support for mutiple devices. 2007-07-20 21:41:34 +02:00
poll.h Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
posix_types.h [PATCH] FD_ZERO build fix 2007-01-11 18:18:22 -08:00
ppc-pci.h [POWERPC] iSeries: Call iSeries_pcibios_init from setup_arch 2007-12-11 13:42:32 +11:00
ppc_asm.h [POWERPC] Fix modpost warnings from head*.S on ppc32 2007-09-14 08:53:36 -05:00
processor.h [POWERPC] Use __attribute__ in asm-powerpc 2007-09-22 14:49:21 +10:00
prom.h [POWERPC] Add of_translate_dma_address 2007-12-11 15:43:35 +11:00
ps3.h [POWERPC] PS3: Add logical performance monitor driver support 2008-01-25 22:52:53 +11:00
ps3av.h ps3av: dont distinguish between boot' and non-boot' autodetection 2007-10-16 09:43:21 -07:00
ps3fb.h [POWERPC] PS3: Frame buffer system-bus rework 2007-06-28 19:16:42 +10:00
ps3stor.h [POWERPC] PS3: Storage Driver Core 2007-06-28 19:19:20 +10:00
pSeries_reconfig.h
ptrace.h Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
qe.h [POWERPC] QE: Add ability to upload QE firmware 2008-01-23 19:34:06 -06:00
qe_ic.h [POWERPC] QEIC: Implement pluggable handlers, fix MPIC cascading 2007-10-08 08:38:57 -05:00
reg.h [POWERPC] Add definition of Cell bookmark SPR 2008-01-25 22:52:51 +11:00
reg_8xx.h
reg_booke.h [POWERPC] Reworking machine check handling and Fix 440/440A 2007-12-23 13:11:59 -06:00
resource.h
rheap.h [POWERPC] User rheap from arch/powerpc/lib 2007-05-09 23:28:17 -05:00
rtas.h Revert "[POWERPC] Fix RTAS os-term usage on kernel panic" 2007-12-03 09:39:45 +11:00
rtc.h
rwsem.h [POWERPC] Prevent direct inclusion of <asm/rwsem.h>. 2007-09-22 14:49:21 +10:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
seccomp.h
sections.h
semaphore.h kill DECLARE_MUTEX_LOCKED 2007-10-17 08:42:47 -07:00
sembuf.h
serial.h
setjmp.h [POWERPC] Make setjmp/longjmp code usable outside of xmon 2008-01-25 22:52:50 +11:00
setup.h [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
smu.h [POWERPC] include/asm-powerpc/: Spelling fixes 2007-12-20 16:17:44 +11:00
socket.h [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
sparsemem.h [POWERPC] PS3: Remove lpar address workaround 2008-01-25 22:52:53 +11:00
spinlock.h
spinlock_types.h
spu.h Merge branch 'linux-2.6' 2008-01-24 10:07:21 +11:00
spu_csa.h [POWERPC] spufs: rework class 0 and 1 interrupt handling 2007-12-21 19:46:20 +11:00
spu_info.h [POWERPC] spufs: Add /lslr, /dma_info and /proxydma files 2006-12-04 20:39:45 +11:00
spu_priv1.h [POWERPC] cell: wrap master run control bit 2007-12-21 19:45:05 +11:00
sstep.h [POWERPC] Added kprobes support to ppc32 2007-02-06 22:55:19 -06:00
stat.h
statfs.h
string.h [STRING]: Move strcasecmp/strncasecmp to lib/string.c 2007-04-26 01:54:39 -07:00
suspend.h [POWERPC] Fix suspend states again 2007-05-02 20:04:30 +10:00
synch.h
syscalls.h [POWERPC] Consolidate sys_sigaltstack 2007-06-14 22:29:57 +10:00
systbl.h timerfd: new timerfd API 2008-02-05 09:44:07 -08:00
system.h [POWERPC] Add _nmask_and_or_msr() declartion to asm-powerpc/system.h 2008-01-23 19:54:30 -06:00
tce.h [POWERPC] Use 4kB iommu pages even on 64kB-page systems 2006-11-01 14:52:48 +11:00
termbits.h [POWERPC] Enable arbitary speed tty ioctls and split input/output speed 2007-07-10 22:03:29 +10:00
termios.h [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
thread_info.h remove unused TIF_NOTIFY_RESUME flag 2007-07-31 15:39:38 -07:00
time.h [POWERPC] Fix hardware IRQ time accounting problem. 2007-12-06 16:08:59 +11:00
timex.h [POWERPC] Cell timebase bug workaround 2006-10-25 11:54:18 +10:00
tlb.h [POWERPC] Include pagemap.h in asm/powerpc/tlb.h 2007-10-03 12:02:43 +10:00
tlbflush.h [POWERPC] Fix oops related to 4xx flush_tlb_page modification 2007-11-09 03:51:14 -06:00
topology.h Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
tsi108.h [POWERPC] Generalize tsi108 PCI setup 2007-05-08 11:54:20 +10:00
tsi108_irq.h [POWERPC] Change include protections to ASM_POWERPC 2007-05-17 21:10:15 +10:00
tsi108_pci.h [POWERPC] Change include protections to ASM_POWERPC 2007-05-17 21:10:15 +10:00
types.h remove strict ansi check from __u64 in asm/types.h 2007-10-17 08:42:53 -07:00
uaccess.h [POWERPC] Add inatomic versions of __get_user and __put_user 2007-04-13 04:09:38 +10:00
ucc.h [POWERPC] qe: miscellaneous code improvements and fixes to the QE library 2007-10-08 08:38:15 -05:00
ucc_fast.h ucc_geth: Implement Transmit on Demand support 2007-04-28 11:01:04 -04:00
ucc_slow.h [POWERPC] qe: miscellaneous code improvements and fixes to the QE library 2007-10-08 08:38:15 -05:00
ucontext.h
udbg.h [POWERPC] 4xx: Add early udbg support for 40x processors 2007-12-23 13:13:03 -06:00
uic.h [POWERPC] Add arch/powerpc driver for UIC, PPC4xx interrupt controller 2007-04-24 21:32:01 +10:00
unaligned.h
uninorth.h
unistd.h [POWERPC] Provide a way to protect 4k subpages when using 64k pages 2008-01-24 10:06:01 +11:00
user.h
vdso.h [POWERPC] Fix vDSO page count calculation 2007-02-13 15:35:52 +11:00
vdso_datapage.h [POWERPC] vdso: Fixes for cache block sizes 2007-11-20 13:56:31 +11:00
vga.h
vio.h [POWERPC] Clean up vio.h 2007-10-11 20:40:44 +10:00
xilinx_intc.h [POWERPC] Virtex: add xilinx interrupt controller driver 2007-10-03 07:23:14 -05:00
xmon.h [POWERPC] add support for stopping spus from xmon 2006-10-25 14:20:22 +10:00
xor.h