forked from Minki/linux
df1d6ea05a
This is a series I worked on with Baolin in 2017 and 2018, but we never quite managed to finish up the last pieces. During the ALSA developer meetup at ELC-E 2018 in Edinburgh, a decision was made to go with this approach for keeping best compatibility with existing source code, and then I failed to follow up by resending the patches. Now I have patches for all remaining time_t uses in the kernel, so it's absolutely time to revisit them. I have done more review of the patches myself and found a couple of minor issues that I have fixed up, otherwise the series is still the same as before. Conceptually, the idea of these patches is: - 64-bit applications should see no changes at all, neither compile-time nor run-time. - 32-bit code compiled with a 64-bit time_t currently does not work with ALSA, and requires kernel changes and/or sound/asound.h changes - Most 32-bit code using these interfaces will work correctly on a modified kernel, with or without the uapi header changes. - 32-bit code using SNDRV_TIMER_IOCTL_TREAD requires the updated header file for 64-bit time_t support - 32-bit i386 user space with 64-bit time_t is broken for SNDRV_PCM_IOCTL_STATUS, SNDRV_RAWMIDI_IOCTL_STATUS and SNDRV_PCM_IOCTL_SYNC_PTR because of i386 alignment. This is also addressed by the updated uapi header. - PCM mmap is currently supported on native x86 kernels (both 32-bit and 64-bit) but not for compat mode. This series breaks the 32-bit native mmap support for 32-bit time_t, but instead allows it for 64-bit time_t on both native and compat kernels. This seems to be the best trade-off, as mmap support is optional already, and most 32-bit code runs in compat mode anyway. - I've tried to avoid breaking compilation of 32-bit code as much as possible. Anything that does break however is likely code that is already broken on 64-bit time_t and needs source changes to fix them. [1] https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git y2038-alsa-v8 [2] https://lore.kernel.org/lkml/CAK8P3a2Os66+iwQYf97qh05W2JP8rmWao8zmKoHiXqVHvyYAJA@mail.gmail.com/T/#m6519cb07cfda08adf1dedea6596bb98892b4d5dc Signed-off-by: Arnd Bergmann <arnd@arndb.de> Changes since v7: (Arnd): - Fix a typo found by Ben Hutchings Changes since v6: (Arnd): - Add a patch to update the API versions - Hide a timespec reference in #ifndef __KERNEL__ to remove the last reference to time_t - Use a more readable way to do padding and describe it in the changelog - Rebase to linux-5.5-rc1, changing include/sound/soc-component.h and sound/drivers/aloop.c as needed. Changes since v5 (Arnd): - Rebased to linux-5.4-rc4 - Updated to completely remove timespec and time_t references from alsa - found and fixed a few bugs Changes since v4 (Baolin): - Add patch 5 to change trigger_tstamp member of struct snd_pcm_runtime. - Add patch 8 to change internal timespec. - Add more explanation in commit message. - Use ktime_get_real_ts64() in patch 6. - Split common code out into a separate function in patch 6. - Fix tu->tread bug in patch 6 and remove #if __BITS_PER_LONG == 64 macro. Changes since v3: - Move struct snd_pcm_status32 to pcm.h file. - Modify comments and commit message. - Add new patch2 ~ patch6. Changes since v2: - Renamed all structures to make clear. - Remove CONFIG_X86_X32 macro and introduced new compat_snd_pcm_status64_x86_32. Changes since v1: - Add one macro for struct snd_pcm_status_32 which only active in 32bits kernel. - Convert pcm_compat.c to use struct snd_pcm_status_64. - Convert pcm_native.c to use struct snd_pcm_status_64. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJd+URTAAoJEGCrR//JCVIn4FwQAJlo8vLvc/bZc58cw5KBdsal /lgYiCoT2Q7IMC3FHr28jVd+R3vAzfSMJFmwawCtV0iNXOsAHv2yyE9+whqH0ljg oz1o7X+oDBBa9Fed1WIxrAjFWzI7u+4lz29qvkenP6x2h9tvvMq0cdxRMz4qSVPk u7c7Yui/yEtBHmcWoQFNhIpeTFg8QCPZnR9SkyZ4O/q1GS9n+Ep5kLioFl3PQGGi KndZ+gMBgIj4l7sRV0l2KFzP/N2dXowUlP+AW9V80LgSI4VyQ7jgMG+QalgzAXwH ey1apJ38m51EglAi4TTglcTpe/TyTKLHs9JBAI+7QNa90EwJTrmjmXwXtfnBVlAS d0uK7ISFNyK/PujYsUD7FQrDeubgSeAYHyKtAh3YGVKFUEOBsGywSVyuCIoRJsmR 2mJFHrsZnvKyooGJY9gwMmttoanwcXnGXloTjFQF7qEzFoi2BdoBsjWrDiN+3olc WVbW3rWSjVeKzD9cEylchTxkxFP1j2NDQEPD4epq+ncm0feq9mC7rrt5G9gXKMmu qf2pMEUKFE7Tn3LllT4iUY7z4FybgEuKADH5/5zQjsVvBZ5BCvi1BDUJaYRQozxh hC6ovFG7uTRL6wOw/7GGx9/lgX2GQ91z6IJeuqZSLj+tdlzVKoScfRgnrbZS8ZOy W4RfCyuo5PedyqfTeTEX =58V0 -----END PGP SIGNATURE----- Merge tag 'y2038-alsa-v8-signed' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground into for-next ALSA: Fix year 2038 issue for sound subsystem This is a series I worked on with Baolin in 2017 and 2018, but we never quite managed to finish up the last pieces. During the ALSA developer meetup at ELC-E 2018 in Edinburgh, a decision was made to go with this approach for keeping best compatibility with existing source code, and then I failed to follow up by resending the patches. Now I have patches for all remaining time_t uses in the kernel, so it's absolutely time to revisit them. I have done more review of the patches myself and found a couple of minor issues that I have fixed up, otherwise the series is still the same as before. Conceptually, the idea of these patches is: - 64-bit applications should see no changes at all, neither compile-time nor run-time. - 32-bit code compiled with a 64-bit time_t currently does not work with ALSA, and requires kernel changes and/or sound/asound.h changes - Most 32-bit code using these interfaces will work correctly on a modified kernel, with or without the uapi header changes. - 32-bit code using SNDRV_TIMER_IOCTL_TREAD requires the updated header file for 64-bit time_t support - 32-bit i386 user space with 64-bit time_t is broken for SNDRV_PCM_IOCTL_STATUS, SNDRV_RAWMIDI_IOCTL_STATUS and SNDRV_PCM_IOCTL_SYNC_PTR because of i386 alignment. This is also addressed by the updated uapi header. - PCM mmap is currently supported on native x86 kernels (both 32-bit and 64-bit) but not for compat mode. This series breaks the 32-bit native mmap support for 32-bit time_t, but instead allows it for 64-bit time_t on both native and compat kernels. This seems to be the best trade-off, as mmap support is optional already, and most 32-bit code runs in compat mode anyway. - I've tried to avoid breaking compilation of 32-bit code as much as possible. Anything that does break however is likely code that is already broken on 64-bit time_t and needs source changes to fix them. [1] https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git y2038-alsa-v8 [2] https://lore.kernel.org/lkml/CAK8P3a2Os66+iwQYf97qh05W2JP8rmWao8zmKoHiXqVHvyYAJA@mail.gmail.com/T/#m6519cb07cfda08adf1dedea6596bb98892b4d5dc Signed-off-by: Arnd Bergmann <arnd@arndb.de> Changes since v7: (Arnd): - Fix a typo found by Ben Hutchings Changes since v6: (Arnd): - Add a patch to update the API versions - Hide a timespec reference in #ifndef __KERNEL__ to remove the last reference to time_t - Use a more readable way to do padding and describe it in the changelog - Rebase to linux-5.5-rc1, changing include/sound/soc-component.h and sound/drivers/aloop.c as needed. Changes since v5 (Arnd): - Rebased to linux-5.4-rc4 - Updated to completely remove timespec and time_t references from alsa - found and fixed a few bugs Changes since v4 (Baolin): - Add patch 5 to change trigger_tstamp member of struct snd_pcm_runtime. - Add patch 8 to change internal timespec. - Add more explanation in commit message. - Use ktime_get_real_ts64() in patch 6. - Split common code out into a separate function in patch 6. - Fix tu->tread bug in patch 6 and remove #if __BITS_PER_LONG == 64 macro. Changes since v3: - Move struct snd_pcm_status32 to pcm.h file. - Modify comments and commit message. - Add new patch2 ~ patch6. Changes since v2: - Renamed all structures to make clear. - Remove CONFIG_X86_X32 macro and introduced new compat_snd_pcm_status64_x86_32. Changes since v1: - Add one macro for struct snd_pcm_status_32 which only active in 32bits kernel. - Convert pcm_compat.c to use struct snd_pcm_status_64. - Convert pcm_native.c to use struct snd_pcm_status_64. |
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| .. | ||
| ac97 | ||
| sof | ||
| ac97_codec.h | ||
| aci.h | ||
| ad1816a.h | ||
| ad1843.h | ||
| adau1373.h | ||
| aess.h | ||
| ak4xxx-adda.h | ||
| ak4113.h | ||
| ak4114.h | ||
| ak4117.h | ||
| ak4531_codec.h | ||
| ak4641.h | ||
| alc5623.h | ||
| asequencer.h | ||
| asound.h | ||
| asoundef.h | ||
| compress_driver.h | ||
| control.h | ||
| core.h | ||
| cs35l33.h | ||
| cs35l34.h | ||
| cs35l35.h | ||
| cs35l36.h | ||
| cs42l52.h | ||
| cs42l56.h | ||
| cs42l73.h | ||
| cs4231-regs.h | ||
| cs4271.h | ||
| cs8403.h | ||
| cs8427.h | ||
| da7213.h | ||
| da7218.h | ||
| da7219-aad.h | ||
| da7219.h | ||
| da9055.h | ||
| designware_i2s.h | ||
| dmaengine_pcm.h | ||
| emu10k1_synth.h | ||
| emu10k1.h | ||
| emu8000_reg.h | ||
| emu8000.h | ||
| emux_legacy.h | ||
| emux_synth.h | ||
| es1688.h | ||
| gus.h | ||
| hda_chmap.h | ||
| hda_codec.h | ||
| hda_component.h | ||
| hda_hwdep.h | ||
| hda_i915.h | ||
| hda_register.h | ||
| hda_regmap.h | ||
| hda_verbs.h | ||
| hdaudio_ext.h | ||
| hdaudio.h | ||
| hdmi-codec.h | ||
| hwdep.h | ||
| i2c.h | ||
| info.h | ||
| initval.h | ||
| intel-dsp-config.h | ||
| intel-nhlt.h | ||
| jack.h | ||
| l3.h | ||
| madera-pdata.h | ||
| max9768.h | ||
| max98088.h | ||
| max98090.h | ||
| max98095.h | ||
| memalloc.h | ||
| minors.h | ||
| mixer_oss.h | ||
| mpu401.h | ||
| omap-hdmi-audio.h | ||
| opl3.h | ||
| opl4.h | ||
| pcm_drm_eld.h | ||
| pcm_iec958.h | ||
| pcm_oss.h | ||
| pcm_params.h | ||
| pcm-indirect.h | ||
| pcm.h | ||
| pt2258.h | ||
| pxa2xx-lib.h | ||
| rawmidi.h | ||
| rt286.h | ||
| rt298.h | ||
| rt5514.h | ||
| rt5645.h | ||
| rt5659.h | ||
| rt5660.h | ||
| rt5663.h | ||
| rt5665.h | ||
| rt5668.h | ||
| rt5670.h | ||
| rt5682.h | ||
| s3c24xx_uda134x.h | ||
| sb16_csp.h | ||
| sb.h | ||
| seq_device.h | ||
| seq_kernel.h | ||
| seq_midi_emul.h | ||
| seq_midi_event.h | ||
| seq_oss_legacy.h | ||
| seq_oss.h | ||
| seq_virmidi.h | ||
| sh_dac_audio.h | ||
| sh_fsi.h | ||
| simple_card_utils.h | ||
| simple_card.h | ||
| snd_wavefront.h | ||
| soc-acpi-intel-match.h | ||
| soc-acpi.h | ||
| soc-component.h | ||
| soc-dai.h | ||
| soc-dapm.h | ||
| soc-dpcm.h | ||
| soc-topology.h | ||
| soc.h | ||
| sof.h | ||
| soundfont.h | ||
| spear_dma.h | ||
| spear_spdif.h | ||
| sta32x.h | ||
| sta350.h | ||
| tas2552-plat.h | ||
| tas5086.h | ||
| tea6330t.h | ||
| timer.h | ||
| tlv320aic3x.h | ||
| tlv320aic32x4.h | ||
| tlv320dac33-plat.h | ||
| tlv.h | ||
| tpa6130a2-plat.h | ||
| uda134x.h | ||
| uda1380.h | ||
| util_mem.h | ||
| vx_core.h | ||
| wavefront.h | ||
| wm0010.h | ||
| wm1250-ev1.h | ||
| wm2000.h | ||
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| wm5100.h | ||
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| wm9081.h | ||
| wm9090.h | ||
| wss.h | ||