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2014-12-16iommu/exynos: Fix arm64 allmodconfig buildMark Brown1-1/+1
The Exynos IOMMU driver uses the ARM specific dmac_flush_range() and outer_flush_range() functions. This breaks the build on arm64 allmodconfig in -next since support has been merged for some Exynos ARMv8 SoCs. Add a dependency on ARM to keep things building until either the driver has the ARM dependencies removed or the ARMv8 architecture code implements these ARM specific APIs. Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2014-12-16Merge tag 'asoc-v3.19-2' of ↵Takashi Iwai6-7/+20
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Merge window fixes for v3.19 A smattering of driver specific fixes here, some more cleanup of the Exynos7 and Intel ACPI support plus a fix for register cache sync on the pcm512x driver which has been lurking for a while.
2014-12-16net/mlx4: Cache line CQE/EQE stride fixesIdo Shamay2-4/+11
This commit contains 2 fixes for the 128B CQE/EQE stride feaure. Wei found that mlx4_QUERY_HCA function marked the wrong capability in flags (64B CQE/EQE), when CQE/EQE stride feature was enabled. Also added small fix in initial CQE ownership bit assignment, when CQE is size is not default 32B. Fixes: 77507aa24 (net/mlx4: Enable CQE/EQE stride support) Signed-off-by: Wei Yang <[email protected]> Signed-off-by: Ido Shamay <[email protected]> Signed-off-by: Amir Vadai <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16net: fec: Fix NAPI raceNimrod Andy1-12/+7
Do camera capture test on i.MX6q sabresd board, and save the capture data to nfs rootfs. The command is: gst-launch-1.0 -e imxv4l2src device=/dev/video1 num-buffers=2592000 ! tee name=t ! queue ! imxv4l2sink sync=false t. ! queue ! vpuenc ! queue ! mux. pulsesrc num-buffers=3720937 blocksize=4096 ! 'audio/x-raw, rate=44100, channels=2' ! queue ! imxmp3enc ! mpegaudioparse ! queue ! mux. qtmux name=mux ! filesink location=video_recording_long.mov After about 10 hours running, there have net watchdog timeout kernel dump: ... WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x2b4/0x2d8() NETDEV WATCHDOG: eth0 (fec): transmit queue 0 timed out CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.24-01051-gdb840b7 #440 [<80014e6c>] (unwind_backtrace) from [<800118ac>] (show_stack+0x10/0x14) [<800118ac>] (show_stack) from [<806ae3f0>] (dump_stack+0x78/0xc0) [<806ae3f0>] (dump_stack) from [<8002b504>] (warn_slowpath_common+0x68/0x8c) [<8002b504>] (warn_slowpath_common) from [<8002b558>] (warn_slowpath_fmt+0x30/0x40) [<8002b558>] (warn_slowpath_fmt) from [<8055e0d4>] (dev_watchdog+0x2b4/0x2d8) [<8055e0d4>] (dev_watchdog) from [<800352d8>] (call_timer_fn.isra.33+0x24/0x8c) [<800352d8>] (call_timer_fn.isra.33) from [<800354c4>] (run_timer_softirq+0x184/0x220) [<800354c4>] (run_timer_softirq) from [<8002f420>] (__do_softirq+0xc0/0x22c) [<8002f420>] (__do_softirq) from [<8002f804>] (irq_exit+0xa8/0xf4) [<8002f804>] (irq_exit) from [<8000ee5c>] (handle_IRQ+0x54/0xb4) [<8000ee5c>] (handle_IRQ) from [<80008598>] (gic_handle_irq+0x28/0x5c) [<80008598>] (gic_handle_irq) from [<800123c0>] (__irq_svc+0x40/0x74) Exception stack(0x80d27f18 to 0x80d27f60) 7f00: 80d27f60 0000014c 7f20: 8858c60e 0000004d 884e4540 0000004d ab7250d0 80d34348 00000000 00000000 7f40: 00000001 00000000 00000017 80d27f60 800702a4 80476e6c 600f0013 ffffffff [<800123c0>] (__irq_svc) from [<80476e6c>] (cpuidle_enter_state+0x50/0xe0) [<80476e6c>] (cpuidle_enter_state) from [<80476fa8>] (cpuidle_idle_call+0xac/0x154) [<80476fa8>] (cpuidle_idle_call) from [<8000f174>] (arch_cpu_idle+0x8/0x44) [<8000f174>] (arch_cpu_idle) from [<80064c54>] (cpu_startup_entry+0x100/0x158) [<80064c54>] (cpu_startup_entry) from [<80cd8a9c>] (start_kernel+0x304/0x368) ---[ end trace 09ebd32fb032f86d ]--- ... There might have a race in napi_schedule(), leaving interrupts disabled forever. After these patch, the case still work more than 40 hours running. Signed-off-by: Fugang Duan <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16xen-netfront: use napi_complete() correctly to prevent Rx stallingDavid Vrabel1-8/+3
After d75b1ade567ffab085e8adbbdacf0092d10cd09c (net: less interrupt masking in NAPI) the napi instance is removed from the per-cpu list prior to calling the n->poll(), and is only requeued if all of the budget was used. This inadvertently broke netfront because netfront does not use NAPI correctly. If netfront had not used all of its budget it would do a final check for any Rx responses and avoid calling napi_complete() if there were more responses. It would still return under budget so it would never be rescheduled. The final check would also not re-enable the Rx interrupt. Additionally, xenvif_poll() would also call napi_complete() /after/ enabling the interrupt. This resulted in a race between the napi_complete() and the napi_schedule() in the interrupt handler. The use of local_irq_save/restore() avoided by race iff the handler is running on the same CPU but not if it was running on a different CPU. Fix both of these by always calling napi_compete() if the budget was not all used, and then calling napi_schedule() if the final checks says there's more work. Signed-off-by: David Vrabel <[email protected]> Cc: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16ip_tunnel: Add missing validation of encap type to ip_tunnel_encap_setup()Thomas Graf1-0/+3
The encap->type comes straight from Netlink. Validate it against max supported encap types just like ip_encap_hlen() already does. Fixes: a8c5f9 ("ip_tunnel: Ops registration for secondary encap (fou, gue)") Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16ip_tunnel: Add sanity checks to ip_tunnel_encap_add_ops()Thomas Graf1-0/+6
The symbols are exported and could be used by external modules. Fixes: a8c5f9 ("ip_tunnel: Ops registration for secondary encap (fou, gue)") Signed-off-by: Thomas Graf <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16Merge tag 'master-2014-12-15' of ↵David S. Miller14-75/+143
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless John W. Linville says: ==================== pull request: wireless 2014-12-16 Please pull this batch of fixes intended for the 3.19 stream! For the Bluetooth bits, Johan says: "The patches consist of: - Coccinelle warning fix - hci_dev_lock/unlock fixes - Fixes for pending mgmt command handling - Fixes for properly following the force_lesc_support switch - Fix for a Microsoft branded Broadcom adapter - New device id for Atheros AR3012 - Fix for BR/EDR Secure Connections enabling" Along with that... Brian Norris avoids leaking some kernel memory contents via printk in brcmsmac. Julia Lawall corrects some misspellings in a few drivers. Larry Finger gives us one more rtlwifi fix to correct a porting oversight. Wei Yongjun fixes a sparse warning in rtlwifi. Please let me know if there are problems! ==================== Signed-off-by: David S. Miller <[email protected]>
2014-12-16net: Allow FIXED_PHY to be modular.David S. Miller4-4/+4
Otherwise we get things like: warning: (NET_DSA_BCM_SF2 && BCMGENET && SYSTEMPORT) selects FIXED_PHY which has unmet direct dependencies (NETDEVICES && PHYLIB=y) In order to make this work we have to rename fixed.c to fixed_phy.c because the regulator drivers already have a module named "fixed.o". Signed-off-by: David S. Miller <[email protected]>
2014-12-16Hexagon: fix signal delivery for debug trapsRichard Kuo1-2/+2
Signed-off-by: Richard Kuo <[email protected]>
2014-12-16Hexagon: set ARCH_DMA_MINALIGNRichard Kuo1-1/+3
Signed-off-by: Richard Kuo <[email protected]>
2014-12-16Hexagon: fix alignment of init_task in RW_DATA_SECTIONRichard Kuo1-2/+2
Signed-off-by: Richard Kuo <[email protected]>
2014-12-16hexagon: Fix build failures in linux-nextGuenter Roeck5-22/+31
hexagon:defconfig fails to build in linux-next since commit 332fd7c4fef5 ("genirq: Generic chip: Change irq_reg_{readl,writel} arguments"). The primary build failure is arch/hexagon/include/asm/cacheflush.h: In function 'copy_to_user_page': arch/hexagon/include/asm/cacheflush.h:89:22: error: 'VM_EXEC' undeclared This is the result of including of <linux/io.h> from <linux/irq.h>, which is now necessary due to the use of readl and writel from irq.h. This causes recursive inclusions in hexagon code; cacheflush.h is included from mm.h prior to the definition of VM_EXEC. Fix the problem by moving copy_to_user_page from the hexagon include file to arch/hexagon/mm/cache.c, similar to other architectures. After this change, several redefinitions of readl and writel are reported. Those are caused by recursive inclusions of io.h and asm/cacheflush.h. Fix those problems by reducing the number of files included from those files. Also, it was necessary to stop including asm-generic/cacheflush.h from asm/cacheflush.h. Instead, functionality originally provided by asm-generic/cacheflush.h is now coded in asm/cacheflush.h directly. Cc: Kevin Cernekee <[email protected]> Cc: Jason Cooper <[email protected]> Signed-off-by: Guenter Roeck <[email protected]> signed-off-by: Richard Kuo <[email protected]>
2014-12-16perf evlist: Do not use hard coded value for a mmap_pages defaultArnaldo Carvalho de Melo1-4/+16
So far what is in there by default is what we were using: 512KB + the control page, but the admin may change that, and if it does to a smaller value, all calls to tooling for non root users start failing, requiring that the user manually set --mmap_pages/-m. Use instead what is in /proc/sys/kernel/perf_event_mlock_kb. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-12-16perf trace: Let the perf_evlist__mmap autosize the number of pages to useArnaldo Carvalho de Melo1-1/+1
So that normal users can run 'trace', we were using a hardcoded 1024 pages value that was more than the default /proc/sys/kernel/perf_event_mlock_kb setting. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-12-16perf evlist: Improve the strerror_mmap methodArnaldo Carvalho de Melo1-4/+13
Considering the per user locked pages limit, improve the message when a user uses multiple simultaneous perf mmap calls: When the request is more than the current maximum: [acme@ssdandy linux]$ trace -m 128 usleep 1 Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_mlock_kb (516 kB) setting. Hint: Tried using 516 kB. Hint: Try 'sudo sh -c "echo 1032 > /proc/sys/kernel/perf_event_mlock_kb"', or Hint: Try using a smaller -m/--mmap-pages value. [acme@ssdandy linux]$ And when the limit is less than that: [acme@ssdandy linux]$ trace -m 512 usleep 1 Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_mlock_kb (2056 kB) setting. Hint: Tried using 2052 kB. Hint: Try using a smaller -m/--mmap-pages value. [acme@ssdandy linux]$ Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-12-16perf evlist: Clarify sterror_mmap variable namesArnaldo Carvalho de Melo1-3/+3
Prep patch for doing further checks like when the number of pages that is being attempted is actually below /proc/sys/kernel/perf_event_mlock_kb but the operation fails because the user doesn't have CAP_IPC_LOCK. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-12-16perf evlist: Fixup brown paper bag on "hint" for --mmap-pages cmdline argArnaldo Carvalho de Melo1-1/+1
When failing due to asking for a number of mmap pages that is more than the max, it was suggesting that an even bigger number of mmap pages should be specified, doh, au contraire! Before: [acme@ssdandy linux]$ trace -m 128 usleep 1 Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_mlock_kb (516 kB) setting. Hint: Tried using 516 kB. Hint: Try using a bigger -m/--mmap-pages value. [acme@ssdandy linux]$ After: [acme@ssdandy linux]$ trace -m 128 usleep 1 Error: Operation not permitted. Hint: Check /proc/sys/kernel/perf_event_mlock_kb (516 kB) setting. Hint: Tried using 516 kB. Hint: Try using a smaller -m/--mmap-pages value. [acme@ssdandy linux]$ And to (really) clarify what happens above, when what the user requests is <= max and even then it fails, a changeset is being made to tell that this is a per user limit, not per process (in the above example there was another 'perf trace' running for this user, which was using all the pages it could use). Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: Don Zickus <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2014-12-16Merge branch 'vnet_le'David S. Miller3-10/+49
Michael S. Tsirkin says: ==================== tun/macvtap: TUNSETIFF fixes Dan Carpenter reported the following: static checker warning: drivers/net/tun.c:1694 tun_set_iff() warn: 0x17100 is larger than 16 bits drivers/net/tun.c 1692 1693 tun->flags = (tun->flags & ~TUN_FEATURES) | 1694 (ifr->ifr_flags & TUN_FEATURES); 1695 It's complaining because the "ifr->ifr_flags" variable is a short (should it be unsigned?). The new define: #define IFF_VNET_LE 0x10000 doesn't fit in two bytes. Other suspect looking code could be: return __virtio16_to_cpu(q->flags & IFF_VNET_LE, val); And that's true: we have run out of IFF flags in tun. So let's not try to add more: add simple GET/SET ioctls instead. Easy to test, leads to clear semantics. Alternatively we'll have to revert the whole thing for 3.19, but that seems more work as this has dependencies in other places. While here, I noticed that macvtap was actually reading ifreq flags as a 32 bit field. Fix that up as well. ==================== Signed-off-by: David S. Miller <[email protected]>
2014-12-16if_tun: drop broken IFF_VNET_LEMichael S. Tsirkin1-1/+0
Everyone should use TUNSETVNETLE/TUNGETVNETLE instead. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16macvtap: drop broken IFF_VNET_LEMichael S. Tsirkin1-3/+20
Use TUNSETVNETLE/TUNGETVNETLE instead. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16tun: drop broken IFF_VNET_LEMichael S. Tsirkin1-3/+23
Use TUNSETVNETLE/TUNGETVNETLE instead. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16if_tun: add TUNSETVNETLE/TUNGETVNETLEMichael S. Tsirkin1-0/+2
ifreq flags field is only 16 bit wide, so setting IFF_VNET_LE there has no effect: doesn't fit in two bytes. The tests passed apparently because they have an even number of bugs, all cancelling out. Luckily we didn't release a kernel with this flag, so it's not too late to fix this. Add TUNSETVNETLE/TUNGETVNETLE to really achieve the purpose of IFF_VNET_LE. This has an added benefit that if we ever want a BE flag, we won't have to deal with weird configurations like setting both LE and BE at the same time. IFF_VNET_LE will be dropped in a follow-up patch. Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16macvtap: fix uninitialized access on TUNSETIFFMichael S. Tsirkin1-3/+4
flags field in ifreq is only 16 bit wide, but we read it as a 32 bit value. If userspace doesn't zero-initialize unused fields, this will lead to failures. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-12-16iommu/amd: Use helpers to access irq_cfg data structure associated with IRQJiang Liu1-7/+7
Use helpers to access irq_cfg data structure associated with IRQ, instead of accessing irq_data->chip_data directly. Later we can rewrite those helpers to support hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Joerg Roedel <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16iommu/vt-d: Use helpers to access irq_cfg data structure associated with IRQJiang Liu1-5/+5
Use helpers to access irq_cfg data structure associated with IRQ, instead of accessing irq_data->chip_data directly. Later we can rewrite those helpers to support hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Joerg Roedel <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86: irq_remapping: Use helpers to access irq_cfg data structure associated ↵Jiang Liu1-3/+3
with IRQ Use helpers to access irq_cfg data structure associated with IRQ, instead of accessing irq_data->chip_data directly. Later we can rewrite those helpers to support hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Joerg Roedel <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Use helpers to access irq_cfg data structure associated with IRQJiang Liu5-14/+14
Use helpers to access irq_cfg data structure associated with IRQ, instead of accessing irq_data->chip_data directly. Later we can rewrite those helpers to support hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Make MSI and HT_IRQ indepenent of X86_IO_APICJiang Liu2-3/+3
Now we have splitted functions to support MSI and HT_IRQ into vector.c, and they have no dependency on IOAPIC any more. So change Kconfig files to make MSI and HT_IRQ independent of X86_IO_APIC. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Move IRQ initialization routines from io_apic.c into vector.cJiang Liu3-21/+31
Move IRQ initialization routines from io_apic.c into vector.c, preparing for enabling hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Move IOAPIC related declarations from hw_irq.h into io_apic.hJiang Liu8-34/+34
Clean up code by moving IOAPIC related declarations from hw_irq.h into io_apic.h. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Cc: Vivek Goyal <[email protected]> Cc: Baoquan He <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: Christian Gmeiner <[email protected]> Cc: Aubrey <[email protected]> Cc: Ryan Desfosses <[email protected]> Cc: Quentin Lambert <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Move HT IRQ related code from io_apic.c into htirq.cJiang Liu3-92/+108
Create arch/x86/kernel/apic/htirq.c to host Hypertransport IRQ related code, preparing for enabling hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Move PCI MSI related code from io_apic.c into msi.cJiang Liu5-276/+290
Create arch/x86/kernel/apic/msi.c to host MSI related code, preparing for enabling hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Replace printk(KERN_LVL) with pr_lvl() utilitiesJiang Liu1-35/+34
Replace printk(KENR_LVL) with pr_lvl() to keep checkpatch script silent. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Make UP version of irq_complete_move() an inline stubThomas Gleixner2-3/+2
No point for having an empty real function. Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Move local APIC related code from io_apic.c into vector.cJiang Liu6-684/+714
Create arch/x86/kernel/apic/vector.c to host local APIC related code, prepare for making MSI/HT_IRQ independent of IOAPIC. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Introduce helpers to access struct irq_cfgJiang Liu2-1/+8
Change irq_cfg() from static to extern, also introduce helper function irqd_cfg(). Later we can rewrite these two helpers when enabling hierarchy irqdomain. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Protect __clear_irq_vector() with vector_lockJiang Liu1-8/+11
Function __clear_irq_vector() accesses vector related data structure, so protect it with vector_lock. Also rename it as clear_irq_vector(). Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Rename local APIC related functions in io_apic.c as apic_xxx()Jiang Liu3-24/+24
Rename local APIC related functions in io_apic.c as apic_xxx() instead of ioapic_xxx(), later they will be moved into separate file. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Refine hw_irq.h to prepare for irqdomain supportJiang Liu1-43/+51
Refine hw_irq.h to prepare for irqdomain support by: 1) guarding common APIC related interfaces with CONFIG_X86_LOCAL_APIC 2) guarding interrupt remapping related interfaces with CONFIG_IRQ_REMAP 3) guarding IOAPIC related interfaces with CONFIG_X86_IO_APIC No functional changes. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Convert irq_2_pin list to generic listYinghai Lu2-18/+12
Use generic list to replace private list implementation so we can use the existing helper functions. Signed-off-by: Yinghai Lu <[email protected]> Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Joerg Roedel <[email protected]>
2014-12-16x86, irq: Kill useless parameter 'irq_attr' of IO_APIC_get_PCI_irq_vector()Jiang Liu4-19/+7
None of the callers requires irq_attr to be filled in. IO_APIC_get_PCI_irq_vector() does not do anything useful with it either. Remove the parameter and fixup the call sites. [ tglx: Massaged changelog ] Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Prarit Bhargava <[email protected]> Cc: Grant Likely <[email protected]> Cc: Ryan Desfosses <[email protected]> Cc: Quentin Lambert <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq, acpi: Get rid of special handling of GSI for ACPI SCIJiang Liu1-8/+2
The IOAPIC has logic to track IOAPIC pin status, so there's no need for special treatment for GSI used by ACPI SCI in function mp_register_gsi() and mp_unregister_gsi(). Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Cc: Pavel Machek <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Introduce helper to check whether an IOAPIC has been registeredJiang Liu4-0/+35
Introduce acpi_ioapic_registered() to check whether an IOAPIC has already been registered, it will be used when enabling IOAPIC hotplug. Signed-off-by: Jiang Liu <[email protected]> Acked-by: Pavel Machek <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq, ACPI: Implement interfaces to support ACPI based IOAPIC hot-removalJiang Liu3-4/+65
Implement acpi_unregister_ioapic() to support ACPI based IOAPIC hot-removal. An IOAPIC could only be removed when all its pins are unused. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq, ACPI: Implement interface to support ACPI based IOAPIC hot-additionJiang Liu2-3/+50
Implement acpi_register_ioapic() and enhance mp_register_ioapic() to support ACPI based IOAPIC hot-addition. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq, ACPI: Introduce a mutex to protect IOAPIC operations from hotplugJiang Liu1-0/+21
We are going to support ACPI based IOAPIC hotplug, so introduce a mutex to protect IOAPIC data structures from IOAPIC hotplug. We choose to serialize in ACPI instead of in the IOAPIC core because: 1) currently we only plan to support ACPI based IOAPIC hotplug 2) it's much more cleaner and easier 3) It does't affect IOAPIC discovered by devicetree, SFI and mpparse. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Cc: Pavel Machek <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Refine mp_register_ioapic() to prepare for IOAPIC hotplugJiang Liu2-33/+58
Refine mp_register_ioapic() to prepare for IOAPIC hotplug by: 1) change return value from void to int. 2) check for gsi range conflicts 3) check for IOAPIC physical address conflicts 4) enhance the way to allocate IOAPIC index Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Keep balance of IOAPIC pin reference countJiang Liu4-4/+25
To keep balance of IOAPIC pin reference count, we need to protect pirq_enable_irq(), acpi_pci_irq_enable() and intel_mid_pci_irq_enable() from reentrance. There are two cases which will cause reentrance. The first case is caused by suspend/hibernation. If pcibios_disable_irq is called during suspending/hibernating, we don't release the assigned IRQ number, otherwise it may break the suspend/hibernation. So late when pcibios_enable_irq is called during resume, we shouldn't allocate IRQ number again. The second case is that function acpi_pci_irq_enable() may be called twice for PCI devices present at boot time as below: 1) pci_acpi_init() --> acpi_pci_irq_enable() if pci_routeirq is true 2) pci_enable_device() --> pcibios_enable_device() --> acpi_pci_irq_enable() We can't kill kernel parameter pci_routeirq yet because it's still needed for debugging purpose. So flag irq_managed is introduced to track whether IRQ number is assigned by OS and to protect pirq_enable_irq(), acpi_pci_irq_enable() and intel_mid_pci_irq_enable() from reentrance. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Len Brown <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
2014-12-16x86, irq: Remove __init marker for functions will be used by IOAPIC hotplugJiang Liu2-11/+11
Remove __init marker for functions which will be used by IOAPIC hotplug at runtime. Signed-off-by: Jiang Liu <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Tony Luck <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Yinghai Lu <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Grant Likely <[email protected]> Cc: Prarit Bhargava <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]>
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