linux/arch/arm/mm
Marek Szyprowski 256ff1cf6b ARM: 8628/1: dma-mapping: preallocate DMA-debug hash tables in core_initcall
fs_initcall is definitely too late to initialize DMA-debug hash tables,
because some drivers might get probed and use DMA mapping framework
already in core_initcall. Late initialization of DMA-debug results in
false warning about accessing memory, that was not allocated, like this
one:
------------[ cut here ]------------
WARNING: CPU: 5 PID: 1 at lib/dma-debug.c:1104 check_unmap+0xa1c/0xe50
exynos-sysmmu 10a60000.sysmmu: DMA-API: device driver tries to free DMA memory it has not allocated [device
address=0x000000006ebd0000] [size=16384 bytes]
Modules linked in:
CPU: 5 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc5-00028-g39dde3d-dirty #44
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[<c0119dd4>] (unwind_backtrace) from [<c01122bc>] (show_stack+0x20/0x24)
[<c01122bc>] (show_stack) from [<c062714c>] (dump_stack+0x84/0xa0)
[<c062714c>] (dump_stack) from [<c0132560>] (__warn+0x14c/0x180)
[<c0132560>] (__warn) from [<c01325dc>] (warn_slowpath_fmt+0x48/0x50)
[<c01325dc>] (warn_slowpath_fmt) from [<c06814f8>] (check_unmap+0xa1c/0xe50)
[<c06814f8>] (check_unmap) from [<c06819c4>] (debug_dma_unmap_page+0x98/0xc8)
[<c06819c4>] (debug_dma_unmap_page) from [<c076c3e8>] (exynos_iommu_domain_free+0x158/0x380)
[<c076c3e8>] (exynos_iommu_domain_free) from [<c0764a30>] (iommu_domain_free+0x34/0x60)
[<c0764a30>] (iommu_domain_free) from [<c011f168>] (release_iommu_mapping+0x30/0xb8)
[<c011f168>] (release_iommu_mapping) from [<c011f23c>] (arm_iommu_release_mapping+0x4c/0x50)
[<c011f23c>] (arm_iommu_release_mapping) from [<c0b061ac>] (s5p_mfc_probe+0x640/0x80c)
[<c0b061ac>] (s5p_mfc_probe) from [<c07e6750>] (platform_drv_probe+0x70/0x148)
[<c07e6750>] (platform_drv_probe) from [<c07e25c0>] (driver_probe_device+0x12c/0x6b0)
[<c07e25c0>] (driver_probe_device) from [<c07e2c6c>] (__driver_attach+0x128/0x17c)
[<c07e2c6c>] (__driver_attach) from [<c07df74c>] (bus_for_each_dev+0x88/0xc8)
[<c07df74c>] (bus_for_each_dev) from [<c07e1b6c>] (driver_attach+0x34/0x58)
[<c07e1b6c>] (driver_attach) from [<c07e1350>] (bus_add_driver+0x18c/0x32c)
[<c07e1350>] (bus_add_driver) from [<c07e4198>] (driver_register+0x98/0x148)
[<c07e4198>] (driver_register) from [<c07e5cb0>] (__platform_driver_register+0x58/0x74)
[<c07e5cb0>] (__platform_driver_register) from [<c174cb30>] (s5p_mfc_driver_init+0x1c/0x20)
[<c174cb30>] (s5p_mfc_driver_init) from [<c0102690>] (do_one_initcall+0x64/0x258)
[<c0102690>] (do_one_initcall) from [<c17014c0>] (kernel_init_freeable+0x3d0/0x4d0)
[<c17014c0>] (kernel_init_freeable) from [<c116eeb4>] (kernel_init+0x18/0x134)
[<c116eeb4>] (kernel_init) from [<c010bbd8>] (ret_from_fork+0x14/0x3c)
---[ end trace dc54c54bd3581296 ]---

This patch moves initialization of DMA-debug to core_initcall. This is
safe from the initialization perspective. dma_debug_do_init() internally calls
debugfs functions and debugfs also gets initialised at core_initcall(), and
that is earlier than arch code in the link order, so it will get initialized
just before the DMA-debug.

Reported-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-11-15 15:29:37 +00:00
..
Kconfig ARM: 8611/1: l2x0: add PMU support 2016-09-06 15:51:09 +01:00
Makefile ARM: 8611/1: l2x0: add PMU support 2016-09-06 15:51:09 +01:00
abort-ev4.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-ev4t.S
abort-ev5t.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-ev5tj.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-ev6.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-ev7.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-lv4t.S ARM: fix oops when using older ARMv4T CPUs 2016-10-19 10:18:43 +01:00
abort-macro.S ARM: entry: provide uaccess assembly macro hooks 2015-08-26 20:27:02 +01:00
abort-nommu.S
alignment.c uaccess: reimplement probe_kernel_address() using probe_kernel_read() 2015-11-05 19:34:48 -08:00
cache-aurora-l2.h ARM: 7547/4: cache-l2x0: add support for Aurora L2 cache ctrl 2012-11-06 19:47:35 +00:00
cache-fa.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-feroceon-l2.c ARM: 8416/1: Feroceon: use of_iomap() to map register base 2015-08-18 14:00:30 +01:00
cache-l2x0-pmu.c ARM: 8611/1: l2x0: add PMU support 2016-09-06 15:51:09 +01:00
cache-l2x0.c ARM: 8611/1: l2x0: add PMU support 2016-09-06 15:51:09 +01:00
cache-nop.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-tauros2.c ARM: l2c: tauros2: use descriptive definitions for register bits 2015-11-26 22:12:26 +00:00
cache-tauros3.h ARM: 7922/1: l2x0: add Marvell Tauros3 support 2013-12-29 12:32:47 +00:00
cache-uniphier.c ARM: uniphier: remove SoC-specific SMP code 2016-08-29 01:57:14 +09:00
cache-v4.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-v4wb.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-v4wt.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-v6.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
cache-v7.S ARM: cache-v7: optimise test for Cortex A9 r0pX devices 2015-04-14 22:26:52 +01:00
cache-v7m.S ARM: 8606/1: V7M: introduce cache operations 2016-09-06 15:51:07 +01:00
cache-xsc3l2.c
context.c ARM: 8465/1: mm: keep reserved ASIDs in sync with mm after multiple rollovers 2015-12-02 23:57:54 +00:00
copypage-fa.c
copypage-feroceon.c
copypage-v4mc.c
copypage-v4wb.c
copypage-v4wt.c
copypage-v6.c ARM: 8236/1: mm: fix discard_old_kernel_data 2014-12-03 16:00:04 +00:00
copypage-xsc3.c
copypage-xscale.c
dma-mapping.c ARM: 8628/1: dma-mapping: preallocate DMA-debug hash tables in core_initcall 2016-11-15 15:29:37 +00:00
dma.h ARM: reduce visibility of dmac_* functions 2015-08-01 22:25:04 +01:00
dump.c ARM: 8249/1: mm: dump: don't skip regions 2015-01-07 20:33:33 +00:00
extable.c ARM: 7876/1: clear Thumb-2 IT state on exception handling 2013-11-07 00:15:49 +00:00
fault-armv.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
fault.c mm: do not pass mm_struct into handle_mm_fault 2016-07-26 16:19:19 -07:00
fault.h exceptions: detritus removal 2016-09-27 21:15:14 -04:00
flush.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
fsr-2level.c
fsr-3level.c ARM: mm: Transparent huge page support for LPAE systems. 2013-06-04 16:52:38 +01:00
highmem.c kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
hugetlbpage.c mm/hugetlb: reduce arch dependent code about huge_pmd_unshare 2015-06-24 17:49:41 -07:00
idmap.c ARM: provide improved virt_to_idmap() functionality 2016-05-03 11:13:54 +01:00
init.c ARM: 8502/1: mm: mark section-aligned portion of rodata NX 2016-02-11 15:44:10 +00:00
iomap.c
ioremap.c ARM: memremap: implement arch_memremap_wb() 2016-04-04 10:26:42 +02:00
l2c-common.c ARM: outer cache: add WARN_ON() to outer_disable() 2014-05-30 00:47:23 +01:00
l2c-l2x0-resume.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
mm.h ARM: provide common method to clear bits in CPU control register 2014-06-02 09:20:11 +01:00
mmap.c mm: ASLR: use get_random_long() 2016-02-27 10:28:52 -08:00
mmu.c Merge branches 'misc' and 'sa1111-base' into for-linus 2016-10-06 08:56:43 +01:00
nommu.c Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2016-05-20 10:01:38 -07:00
pabort-legacy.S
pabort-v6.S
pabort-v7.S
pageattr.c ARM: 8544/1: set_memory_xx fixes 2016-03-04 23:32:45 +00:00
pgd.c arm: get rid of superfluous __GFP_REPEAT 2016-07-26 16:19:19 -07:00
proc-arm7tdmi.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm9tdmi.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm720.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm740.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm920.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm922.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm925.S ARM: 8349/1: arch/arm/mm/proc-arm925.S: remove dead #ifdef block 2015-05-03 23:22:27 +01:00
proc-arm926.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm940.S Merge branches 'misc', 'vdso' and 'fixes' into for-next 2015-04-14 22:28:25 +01:00
proc-arm946.S Merge branches 'misc', 'vdso' and 'fixes' into for-next 2015-04-14 22:28:25 +01:00
proc-arm1020.S ARM: 8348/1: remove comments on CPU_ARM1020_CPU_IDLE 2015-05-03 23:22:09 +01:00
proc-arm1020e.S ARM: 8348/1: remove comments on CPU_ARM1020_CPU_IDLE 2015-05-03 23:22:09 +01:00
proc-arm1022.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-arm1026.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-fa526.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-feroceon.S ARM: 8350/1: proc-feroceon: Fix feroceon_proc_info macro 2015-05-03 23:23:09 +01:00
proc-macros.S ARM: 8606/1: V7M: introduce cache operations 2016-09-06 15:51:07 +01:00
proc-mohawk.S ARM: mohawk: allow building with MMU disabled 2015-12-01 21:44:25 +01:00
proc-sa110.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-sa1100.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-syms.c ARM: modules: don't export cpu_set_pte_ext when !MMU 2013-03-26 09:55:34 +00:00
proc-v6.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-v7-2level.S Merge branches 'arnd-fixes', 'clk', 'misc', 'v7' and 'fixes' into for-next 2015-06-12 21:18:08 +01:00
proc-v7-3level.S ARM: redo TTBR setup code for LPAE 2015-06-01 23:48:19 +01:00
proc-v7.S ARM: 8599/1: mm: pull asm/memory.h explicitly 2016-08-23 10:07:50 +01:00
proc-v7m.S ARM: 8624/1: proc-v7m.S: fix init section name 2016-11-15 15:28:57 +00:00
proc-xsc3.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
proc-xscale.S ARM: 8314/1: replace PROCINFO embedded branch with relative offset 2015-03-28 15:46:14 +00:00
pv-fixup-asm.S ARM: re-implement physical address space switching 2015-06-01 23:46:33 +01:00
tcm.h ARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch() 2013-04-17 16:53:24 +01:00
tlb-fa.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
tlb-v4.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
tlb-v4wb.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
tlb-v4wbi.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
tlb-v6.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
tlb-v7.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00