mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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md update for 3.8
Mostly just little fixes. Probably biggest part is AVX accelerated RAID6 calculations. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIVAwUAUM/w2Dnsnt1WYoG5AQKXlg/9F5juv4CjRkRRFLqZgOPBLmn/s/2Vspgh 2Kv8Jcyixd8jUQNbobZv0ahlJH/iSU61kpOE8QjLbKi5Y42vAbM0ZU2aHJ6nqGZy HiTI8K+7kTvCK3ZXLcUQ+4oPPBNTcoTZbLWaEOmIqB1ruLddoIR7M9fG3PspVeG0 jijnXR8IfL6mr4YDXnJkEhFrneTysVik05RkKYZKyM/9r3stAoMJ9o0/EFy3OFxb lO6mLEtvjVArXcnuf1RMCw2YKgki9Y4r73HCplgQsVFvcxcpsya4gFF+lRR5j7cO /eMYbSQ89iWEYKh1dJ9u1nofc8fX5ia71QQyO1fkO4GXRHXPVIyBgKSbe7SaL6iG JUMm7idUV2rZGeq3ln3k8Yor4QqHvN1n7pRKKUF+ZdsPoQ1B/TABu+qpsAdo5ZhP fxDsULsHrzEaxgetd4V8F2Uptca9ni43sMI8mwsvVlA0p6SOzMIyoJLC9xAZpx11 b3H3+7Oje/fasmszBoq5B9uAlSt9XXVN4DDn2q6cX+S96JSX6jcsN1c6cJBO+ZxB OU6a6P5mnU6HuxU02rspe7G8BeU+ybaonErOW+GdyC4r7M/cImC0dSp0NGHK2211 oqu0xBx/Q/ddTFwKQqa4HzR2ws09+LhKbjdqYIhCEKttIbLIAjf73ARZ19XPSRRX pDR/ey2CB6E= =uK52 -----END PGP SIGNATURE----- Merge tag 'md-3.8' of git://neil.brown.name/md Pull md update from Neil Brown: "Mostly just little fixes. Probably biggest part is AVX accelerated RAID6 calculations." * tag 'md-3.8' of git://neil.brown.name/md: md/raid5: add blktrace calls md/raid5: use async_tx_quiesce() instead of open-coding it. md: Use ->curr_resync as last completed request when cleanly aborting resync. lib/raid6: build proper files on corresponding arch lib/raid6: Add AVX2 optimized gen_syndrome functions lib/raid6: Add AVX2 optimized recovery functions md: Update checkpoint of resync/recovery based on time. md:Add place to update ->recovery_cp. md.c: re-indent various 'switch' statements. md: close race between removing and adding a device. md: removed unused variable in calc_sb_1_csm.
This commit is contained in:
commit
ea88eeac0c
@ -123,9 +123,10 @@ cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTI
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# does binutils support specific instructions?
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asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
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avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
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avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1)
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KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
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KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
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KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr)
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KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr)
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LDFLAGS := -m elf_$(UTS_MACHINE)
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@ -1414,12 +1414,11 @@ static __le32 calc_sb_1_csum(struct mdp_superblock_1 * sb)
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unsigned long long newcsum;
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int size = 256 + le32_to_cpu(sb->max_dev)*2;
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__le32 *isuper = (__le32*)sb;
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int i;
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disk_csum = sb->sb_csum;
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sb->sb_csum = 0;
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newcsum = 0;
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for (i=0; size>=4; size -= 4 )
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for (; size >= 4; size -= 4)
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newcsum += le32_to_cpu(*isuper++);
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if (size == 2)
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@ -4753,6 +4752,8 @@ md_attr_store(struct kobject *kobj, struct attribute *attr,
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}
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mddev_get(mddev);
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spin_unlock(&all_mddevs_lock);
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if (entry->store == new_dev_store)
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flush_workqueue(md_misc_wq);
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rv = mddev_lock(mddev);
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if (!rv) {
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rv = entry->store(mddev, page, length);
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@ -6346,8 +6347,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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* Commands dealing with the RAID driver but not any
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* particular array:
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*/
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switch (cmd)
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{
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switch (cmd) {
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case RAID_VERSION:
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err = get_version(argp);
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goto done;
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@ -6398,6 +6398,10 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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goto abort;
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}
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if (cmd == ADD_NEW_DISK)
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/* need to ensure md_delayed_delete() has completed */
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flush_workqueue(md_misc_wq);
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err = mddev_lock(mddev);
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if (err) {
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printk(KERN_INFO
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@ -6406,10 +6410,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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goto abort;
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}
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switch (cmd)
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{
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case SET_ARRAY_INFO:
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{
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if (cmd == SET_ARRAY_INFO) {
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mdu_array_info_t info;
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if (!arg)
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memset(&info, 0, sizeof(info));
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@ -6446,10 +6447,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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" array info. %d\n", err);
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goto abort_unlock;
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}
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}
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goto done_unlock;
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default:;
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}
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/*
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@ -6468,8 +6466,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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/*
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* Commands even a read-only array can execute:
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*/
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switch (cmd)
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{
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switch (cmd) {
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case GET_BITMAP_FILE:
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err = get_bitmap_file(mddev, argp);
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goto done_unlock;
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@ -6535,8 +6532,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
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}
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}
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switch (cmd)
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{
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switch (cmd) {
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case ADD_NEW_DISK:
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{
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mdu_disk_info_t info;
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@ -7184,6 +7180,7 @@ void md_done_sync(struct mddev *mddev, int blocks, int ok)
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wake_up(&mddev->recovery_wait);
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if (!ok) {
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set_bit(MD_RECOVERY_INTR, &mddev->recovery);
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set_bit(MD_RECOVERY_ERROR, &mddev->recovery);
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md_wakeup_thread(mddev->thread);
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// stop recovery, signal do_sync ....
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}
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@ -7281,6 +7278,7 @@ EXPORT_SYMBOL_GPL(md_allow_write);
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#define SYNC_MARKS 10
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#define SYNC_MARK_STEP (3*HZ)
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#define UPDATE_FREQUENCY (5*60*HZ)
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void md_do_sync(struct md_thread *thread)
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{
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struct mddev *mddev = thread->mddev;
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@ -7289,6 +7287,7 @@ void md_do_sync(struct md_thread *thread)
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window;
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sector_t max_sectors,j, io_sectors;
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unsigned long mark[SYNC_MARKS];
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unsigned long update_time;
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sector_t mark_cnt[SYNC_MARKS];
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int last_mark,m;
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struct list_head *tmp;
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@ -7448,6 +7447,7 @@ void md_do_sync(struct md_thread *thread)
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mddev->curr_resync_completed = j;
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sysfs_notify(&mddev->kobj, NULL, "sync_completed");
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md_new_event(mddev);
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update_time = jiffies;
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blk_start_plug(&plug);
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while (j < max_sectors) {
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@ -7459,6 +7459,7 @@ void md_do_sync(struct md_thread *thread)
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((mddev->curr_resync > mddev->curr_resync_completed &&
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(mddev->curr_resync - mddev->curr_resync_completed)
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> (max_sectors >> 4)) ||
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time_after_eq(jiffies, update_time + UPDATE_FREQUENCY) ||
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(j - mddev->curr_resync_completed)*2
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>= mddev->resync_max - mddev->curr_resync_completed
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)) {
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@ -7466,6 +7467,10 @@ void md_do_sync(struct md_thread *thread)
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wait_event(mddev->recovery_wait,
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atomic_read(&mddev->recovery_active) == 0);
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mddev->curr_resync_completed = j;
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if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) &&
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j > mddev->recovery_cp)
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mddev->recovery_cp = j;
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update_time = jiffies;
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set_bit(MD_CHANGE_CLEAN, &mddev->flags);
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sysfs_notify(&mddev->kobj, NULL, "sync_completed");
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}
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@ -7570,8 +7575,13 @@ void md_do_sync(struct md_thread *thread)
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printk(KERN_INFO
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"md: checkpointing %s of %s.\n",
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desc, mdname(mddev));
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if (test_bit(MD_RECOVERY_ERROR,
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&mddev->recovery))
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mddev->recovery_cp =
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mddev->curr_resync_completed;
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else
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mddev->recovery_cp =
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mddev->curr_resync;
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}
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} else
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mddev->recovery_cp = MaxSector;
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@ -307,6 +307,7 @@ struct mddev {
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* REQUEST: user-space has requested a sync (used with SYNC)
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* CHECK: user-space request for check-only, no repair
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* RESHAPE: A reshape is happening
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* ERROR: sync-action interrupted because io-error
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*
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* If neither SYNC or RESHAPE are set, then it is a recovery.
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*/
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@ -320,6 +321,7 @@ struct mddev {
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#define MD_RECOVERY_CHECK 7
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#define MD_RECOVERY_RESHAPE 8
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#define MD_RECOVERY_FROZEN 9
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#define MD_RECOVERY_ERROR 10
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unsigned long recovery;
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/* If a RAID personality determines that recovery (of a particular
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@ -53,6 +53,8 @@
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#include <linux/cpu.h>
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#include <linux/slab.h>
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#include <linux/ratelimit.h>
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#include <trace/events/block.h>
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#include "md.h"
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#include "raid5.h"
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#include "raid0.h"
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@ -182,6 +184,8 @@ static void return_io(struct bio *return_bi)
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return_bi = bi->bi_next;
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bi->bi_next = NULL;
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bi->bi_size = 0;
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trace_block_bio_complete(bdev_get_queue(bi->bi_bdev),
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bi, 0);
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bio_endio(bi, 0);
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bi = return_bi;
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}
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@ -670,6 +674,9 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
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bi->bi_next = NULL;
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if (rrdev)
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set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
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trace_block_bio_remap(bdev_get_queue(bi->bi_bdev),
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bi, disk_devt(conf->mddev->gendisk),
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sh->dev[i].sector);
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generic_make_request(bi);
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}
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if (rrdev) {
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@ -697,6 +704,9 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
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rbi->bi_io_vec[0].bv_offset = 0;
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rbi->bi_size = STRIPE_SIZE;
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rbi->bi_next = NULL;
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trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
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rbi, disk_devt(conf->mddev->gendisk),
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sh->dev[i].sector);
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generic_make_request(rbi);
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}
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if (!rdev && !rrdev) {
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@ -2853,8 +2863,10 @@ static void handle_stripe_dirtying(struct r5conf *conf,
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pr_debug("for sector %llu, rmw=%d rcw=%d\n",
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(unsigned long long)sh->sector, rmw, rcw);
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set_bit(STRIPE_HANDLE, &sh->state);
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if (rmw < rcw && rmw > 0)
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if (rmw < rcw && rmw > 0) {
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/* prefer read-modify-write, but need to get some data */
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blk_add_trace_msg(conf->mddev->queue, "raid5 rmw %llu %d",
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(unsigned long long)sh->sector, rmw);
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for (i = disks; i--; ) {
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struct r5dev *dev = &sh->dev[i];
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if ((dev->towrite || i == sh->pd_idx) &&
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@ -2875,8 +2887,10 @@ static void handle_stripe_dirtying(struct r5conf *conf,
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}
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}
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}
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}
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if (rcw <= rmw && rcw > 0) {
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/* want reconstruct write, but need to get some data */
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int qread =0;
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rcw = 0;
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for (i = disks; i--; ) {
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struct r5dev *dev = &sh->dev[i];
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@ -2895,12 +2909,17 @@ static void handle_stripe_dirtying(struct r5conf *conf,
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set_bit(R5_LOCKED, &dev->flags);
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set_bit(R5_Wantread, &dev->flags);
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s->locked++;
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qread++;
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} else {
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set_bit(STRIPE_DELAYED, &sh->state);
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set_bit(STRIPE_HANDLE, &sh->state);
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}
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}
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}
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if (rcw)
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blk_add_trace_msg(conf->mddev->queue, "raid5 rcw %llu %d %d %d",
|
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(unsigned long long)sh->sector,
|
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rcw, qread, test_bit(STRIPE_DELAYED, &sh->state));
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}
|
||||
/* now if nothing is locked, and if we have enough data,
|
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* we can start a write request
|
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@ -3222,10 +3241,7 @@ static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh)
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|
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}
|
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/* done submitting copies, wait for them to complete */
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if (tx) {
|
||||
async_tx_ack(tx);
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dma_wait_for_async_tx(tx);
|
||||
}
|
||||
async_tx_quiesce(&tx);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -3901,6 +3917,8 @@ static void raid5_align_endio(struct bio *bi, int error)
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||||
rdev_dec_pending(rdev, conf->mddev);
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||||
|
||||
if (!error && uptodate) {
|
||||
trace_block_bio_complete(bdev_get_queue(raid_bi->bi_bdev),
|
||||
raid_bi, 0);
|
||||
bio_endio(raid_bi, 0);
|
||||
if (atomic_dec_and_test(&conf->active_aligned_reads))
|
||||
wake_up(&conf->wait_for_stripe);
|
||||
@ -4005,6 +4023,9 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio)
|
||||
atomic_inc(&conf->active_aligned_reads);
|
||||
spin_unlock_irq(&conf->device_lock);
|
||||
|
||||
trace_block_bio_remap(bdev_get_queue(align_bi->bi_bdev),
|
||||
align_bi, disk_devt(mddev->gendisk),
|
||||
raid_bio->bi_sector);
|
||||
generic_make_request(align_bi);
|
||||
return 1;
|
||||
} else {
|
||||
@ -4079,6 +4100,7 @@ static void raid5_unplug(struct blk_plug_cb *blk_cb, bool from_schedule)
|
||||
struct stripe_head *sh;
|
||||
struct mddev *mddev = cb->cb.data;
|
||||
struct r5conf *conf = mddev->private;
|
||||
int cnt = 0;
|
||||
|
||||
if (cb->list.next && !list_empty(&cb->list)) {
|
||||
spin_lock_irq(&conf->device_lock);
|
||||
@ -4093,9 +4115,11 @@ static void raid5_unplug(struct blk_plug_cb *blk_cb, bool from_schedule)
|
||||
smp_mb__before_clear_bit();
|
||||
clear_bit(STRIPE_ON_UNPLUG_LIST, &sh->state);
|
||||
__release_stripe(conf, sh);
|
||||
cnt++;
|
||||
}
|
||||
spin_unlock_irq(&conf->device_lock);
|
||||
}
|
||||
trace_block_unplug(mddev->queue, cnt, !from_schedule);
|
||||
kfree(cb);
|
||||
}
|
||||
|
||||
@ -4353,6 +4377,8 @@ static void make_request(struct mddev *mddev, struct bio * bi)
|
||||
if ( rw == WRITE )
|
||||
md_write_end(mddev);
|
||||
|
||||
trace_block_bio_complete(bdev_get_queue(bi->bi_bdev),
|
||||
bi, 0);
|
||||
bio_endio(bi, 0);
|
||||
}
|
||||
}
|
||||
@ -4729,8 +4755,11 @@ static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio)
|
||||
handled++;
|
||||
}
|
||||
remaining = raid5_dec_bi_active_stripes(raid_bio);
|
||||
if (remaining == 0)
|
||||
if (remaining == 0) {
|
||||
trace_block_bio_complete(bdev_get_queue(raid_bio->bi_bdev),
|
||||
raid_bio, 0);
|
||||
bio_endio(raid_bio, 0);
|
||||
}
|
||||
if (atomic_dec_and_test(&conf->active_aligned_reads))
|
||||
wake_up(&conf->wait_for_stripe);
|
||||
return handled;
|
||||
|
@ -98,6 +98,9 @@ extern const struct raid6_calls raid6_altivec1;
|
||||
extern const struct raid6_calls raid6_altivec2;
|
||||
extern const struct raid6_calls raid6_altivec4;
|
||||
extern const struct raid6_calls raid6_altivec8;
|
||||
extern const struct raid6_calls raid6_avx2x1;
|
||||
extern const struct raid6_calls raid6_avx2x2;
|
||||
extern const struct raid6_calls raid6_avx2x4;
|
||||
|
||||
struct raid6_recov_calls {
|
||||
void (*data2)(int, size_t, int, int, void **);
|
||||
@ -109,6 +112,7 @@ struct raid6_recov_calls {
|
||||
|
||||
extern const struct raid6_recov_calls raid6_recov_intx1;
|
||||
extern const struct raid6_recov_calls raid6_recov_ssse3;
|
||||
extern const struct raid6_recov_calls raid6_recov_avx2;
|
||||
|
||||
/* Algorithm list */
|
||||
extern const struct raid6_calls * const raid6_algos[];
|
||||
|
@ -1,8 +1,11 @@
|
||||
obj-$(CONFIG_RAID6_PQ) += raid6_pq.o
|
||||
|
||||
raid6_pq-y += algos.o recov.o recov_ssse3.o tables.o int1.o int2.o int4.o \
|
||||
int8.o int16.o int32.o altivec1.o altivec2.o altivec4.o \
|
||||
altivec8.o mmx.o sse1.o sse2.o
|
||||
raid6_pq-y += algos.o recov.o tables.o int1.o int2.o int4.o \
|
||||
int8.o int16.o int32.o
|
||||
|
||||
raid6_pq-$(CONFIG_X86) += recov_ssse3.o recov_avx2.o mmx.o sse1.o sse2.o avx2.o
|
||||
raid6_pq-$(CONFIG_ALTIVEC) += altivec1.o altivec2.o altivec4.o altivec8.o
|
||||
|
||||
hostprogs-y += mktables
|
||||
|
||||
quiet_cmd_unroll = UNROLL $@
|
||||
|
@ -45,11 +45,20 @@ const struct raid6_calls * const raid6_algos[] = {
|
||||
&raid6_sse1x2,
|
||||
&raid6_sse2x1,
|
||||
&raid6_sse2x2,
|
||||
#ifdef CONFIG_AS_AVX2
|
||||
&raid6_avx2x1,
|
||||
&raid6_avx2x2,
|
||||
#endif
|
||||
#endif
|
||||
#if defined(__x86_64__) && !defined(__arch_um__)
|
||||
&raid6_sse2x1,
|
||||
&raid6_sse2x2,
|
||||
&raid6_sse2x4,
|
||||
#ifdef CONFIG_AS_AVX2
|
||||
&raid6_avx2x1,
|
||||
&raid6_avx2x2,
|
||||
&raid6_avx2x4,
|
||||
#endif
|
||||
#endif
|
||||
#ifdef CONFIG_ALTIVEC
|
||||
&raid6_altivec1,
|
||||
@ -72,6 +81,9 @@ EXPORT_SYMBOL_GPL(raid6_datap_recov);
|
||||
|
||||
const struct raid6_recov_calls *const raid6_recov_algos[] = {
|
||||
#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
|
||||
#ifdef CONFIG_AS_AVX2
|
||||
&raid6_recov_avx2,
|
||||
#endif
|
||||
&raid6_recov_ssse3,
|
||||
#endif
|
||||
&raid6_recov_intx1,
|
||||
|
@ -24,13 +24,10 @@
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
|
||||
#ifdef CONFIG_ALTIVEC
|
||||
|
||||
#include <altivec.h>
|
||||
#ifdef __KERNEL__
|
||||
# include <asm/cputable.h>
|
||||
# include <asm/switch_to.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* This is the C data type to use. We use a vector of
|
||||
|
251
lib/raid6/avx2.c
Normal file
251
lib/raid6/avx2.c
Normal file
@ -0,0 +1,251 @@
|
||||
/* -*- linux-c -*- ------------------------------------------------------- *
|
||||
*
|
||||
* Copyright (C) 2012 Intel Corporation
|
||||
* Author: Yuanhan Liu <yuanhan.liu@linux.intel.com>
|
||||
*
|
||||
* Based on sse2.c: Copyright 2002 H. Peter Anvin - All Rights Reserved
|
||||
*
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
|
||||
* Boston MA 02111-1307, USA; either version 2 of the License, or
|
||||
* (at your option) any later version; incorporated herein by reference.
|
||||
*
|
||||
* ----------------------------------------------------------------------- */
|
||||
|
||||
/*
|
||||
* AVX2 implementation of RAID-6 syndrome functions
|
||||
*
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_AS_AVX2
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
||||
static const struct raid6_avx2_constants {
|
||||
u64 x1d[4];
|
||||
} raid6_avx2_constants __aligned(32) = {
|
||||
{ 0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
|
||||
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,},
|
||||
};
|
||||
|
||||
static int raid6_have_avx2(void)
|
||||
{
|
||||
return boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_AVX);
|
||||
}
|
||||
|
||||
/*
|
||||
* Plain AVX2 implementation
|
||||
*/
|
||||
static void raid6_avx21_gen_syndrome(int disks, size_t bytes, void **ptrs)
|
||||
{
|
||||
u8 **dptr = (u8 **)ptrs;
|
||||
u8 *p, *q;
|
||||
int d, z, z0;
|
||||
|
||||
z0 = disks - 3; /* Highest data disk */
|
||||
p = dptr[z0+1]; /* XOR parity */
|
||||
q = dptr[z0+2]; /* RS syndrome */
|
||||
|
||||
kernel_fpu_begin();
|
||||
|
||||
asm volatile("vmovdqa %0,%%ymm0" : : "m" (raid6_avx2_constants.x1d[0]));
|
||||
asm volatile("vpxor %ymm3,%ymm3,%ymm3"); /* Zero temp */
|
||||
|
||||
for (d = 0; d < bytes; d += 32) {
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z0][d]));
|
||||
asm volatile("vmovdqa %0,%%ymm2" : : "m" (dptr[z0][d]));/* P[0] */
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z0-1][d]));
|
||||
asm volatile("vmovdqa %ymm2,%ymm4");/* Q[0] */
|
||||
asm volatile("vmovdqa %0,%%ymm6" : : "m" (dptr[z0-1][d]));
|
||||
for (z = z0-2; z >= 0; z--) {
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d]));
|
||||
asm volatile("vpcmpgtb %ymm4,%ymm3,%ymm5");
|
||||
asm volatile("vpaddb %ymm4,%ymm4,%ymm4");
|
||||
asm volatile("vpand %ymm0,%ymm5,%ymm5");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm6,%ymm2,%ymm2");
|
||||
asm volatile("vpxor %ymm6,%ymm4,%ymm4");
|
||||
asm volatile("vmovdqa %0,%%ymm6" : : "m" (dptr[z][d]));
|
||||
}
|
||||
asm volatile("vpcmpgtb %ymm4,%ymm3,%ymm5");
|
||||
asm volatile("vpaddb %ymm4,%ymm4,%ymm4");
|
||||
asm volatile("vpand %ymm0,%ymm5,%ymm5");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm6,%ymm2,%ymm2");
|
||||
asm volatile("vpxor %ymm6,%ymm4,%ymm4");
|
||||
|
||||
asm volatile("vmovntdq %%ymm2,%0" : "=m" (p[d]));
|
||||
asm volatile("vpxor %ymm2,%ymm2,%ymm2");
|
||||
asm volatile("vmovntdq %%ymm4,%0" : "=m" (q[d]));
|
||||
asm volatile("vpxor %ymm4,%ymm4,%ymm4");
|
||||
}
|
||||
|
||||
asm volatile("sfence" : : : "memory");
|
||||
kernel_fpu_end();
|
||||
}
|
||||
|
||||
const struct raid6_calls raid6_avx2x1 = {
|
||||
raid6_avx21_gen_syndrome,
|
||||
raid6_have_avx2,
|
||||
"avx2x1",
|
||||
1 /* Has cache hints */
|
||||
};
|
||||
|
||||
/*
|
||||
* Unrolled-by-2 AVX2 implementation
|
||||
*/
|
||||
static void raid6_avx22_gen_syndrome(int disks, size_t bytes, void **ptrs)
|
||||
{
|
||||
u8 **dptr = (u8 **)ptrs;
|
||||
u8 *p, *q;
|
||||
int d, z, z0;
|
||||
|
||||
z0 = disks - 3; /* Highest data disk */
|
||||
p = dptr[z0+1]; /* XOR parity */
|
||||
q = dptr[z0+2]; /* RS syndrome */
|
||||
|
||||
kernel_fpu_begin();
|
||||
|
||||
asm volatile("vmovdqa %0,%%ymm0" : : "m" (raid6_avx2_constants.x1d[0]));
|
||||
asm volatile("vpxor %ymm1,%ymm1,%ymm1"); /* Zero temp */
|
||||
|
||||
/* We uniformly assume a single prefetch covers at least 32 bytes */
|
||||
for (d = 0; d < bytes; d += 64) {
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z0][d]));
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z0][d+32]));
|
||||
asm volatile("vmovdqa %0,%%ymm2" : : "m" (dptr[z0][d]));/* P[0] */
|
||||
asm volatile("vmovdqa %0,%%ymm3" : : "m" (dptr[z0][d+32]));/* P[1] */
|
||||
asm volatile("vmovdqa %ymm2,%ymm4"); /* Q[0] */
|
||||
asm volatile("vmovdqa %ymm3,%ymm6"); /* Q[1] */
|
||||
for (z = z0-1; z >= 0; z--) {
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d]));
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d+32]));
|
||||
asm volatile("vpcmpgtb %ymm4,%ymm1,%ymm5");
|
||||
asm volatile("vpcmpgtb %ymm6,%ymm1,%ymm7");
|
||||
asm volatile("vpaddb %ymm4,%ymm4,%ymm4");
|
||||
asm volatile("vpaddb %ymm6,%ymm6,%ymm6");
|
||||
asm volatile("vpand %ymm0,%ymm5,%ymm5");
|
||||
asm volatile("vpand %ymm0,%ymm7,%ymm7");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm7,%ymm6,%ymm6");
|
||||
asm volatile("vmovdqa %0,%%ymm5" : : "m" (dptr[z][d]));
|
||||
asm volatile("vmovdqa %0,%%ymm7" : : "m" (dptr[z][d+32]));
|
||||
asm volatile("vpxor %ymm5,%ymm2,%ymm2");
|
||||
asm volatile("vpxor %ymm7,%ymm3,%ymm3");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm7,%ymm6,%ymm6");
|
||||
}
|
||||
asm volatile("vmovntdq %%ymm2,%0" : "=m" (p[d]));
|
||||
asm volatile("vmovntdq %%ymm3,%0" : "=m" (p[d+32]));
|
||||
asm volatile("vmovntdq %%ymm4,%0" : "=m" (q[d]));
|
||||
asm volatile("vmovntdq %%ymm6,%0" : "=m" (q[d+32]));
|
||||
}
|
||||
|
||||
asm volatile("sfence" : : : "memory");
|
||||
kernel_fpu_end();
|
||||
}
|
||||
|
||||
const struct raid6_calls raid6_avx2x2 = {
|
||||
raid6_avx22_gen_syndrome,
|
||||
raid6_have_avx2,
|
||||
"avx2x2",
|
||||
1 /* Has cache hints */
|
||||
};
|
||||
|
||||
#ifdef CONFIG_X86_64
|
||||
|
||||
/*
|
||||
* Unrolled-by-4 AVX2 implementation
|
||||
*/
|
||||
static void raid6_avx24_gen_syndrome(int disks, size_t bytes, void **ptrs)
|
||||
{
|
||||
u8 **dptr = (u8 **)ptrs;
|
||||
u8 *p, *q;
|
||||
int d, z, z0;
|
||||
|
||||
z0 = disks - 3; /* Highest data disk */
|
||||
p = dptr[z0+1]; /* XOR parity */
|
||||
q = dptr[z0+2]; /* RS syndrome */
|
||||
|
||||
kernel_fpu_begin();
|
||||
|
||||
asm volatile("vmovdqa %0,%%ymm0" : : "m" (raid6_avx2_constants.x1d[0]));
|
||||
asm volatile("vpxor %ymm1,%ymm1,%ymm1"); /* Zero temp */
|
||||
asm volatile("vpxor %ymm2,%ymm2,%ymm2"); /* P[0] */
|
||||
asm volatile("vpxor %ymm3,%ymm3,%ymm3"); /* P[1] */
|
||||
asm volatile("vpxor %ymm4,%ymm4,%ymm4"); /* Q[0] */
|
||||
asm volatile("vpxor %ymm6,%ymm6,%ymm6"); /* Q[1] */
|
||||
asm volatile("vpxor %ymm10,%ymm10,%ymm10"); /* P[2] */
|
||||
asm volatile("vpxor %ymm11,%ymm11,%ymm11"); /* P[3] */
|
||||
asm volatile("vpxor %ymm12,%ymm12,%ymm12"); /* Q[2] */
|
||||
asm volatile("vpxor %ymm14,%ymm14,%ymm14"); /* Q[3] */
|
||||
|
||||
for (d = 0; d < bytes; d += 128) {
|
||||
for (z = z0; z >= 0; z--) {
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d]));
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d+32]));
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d+64]));
|
||||
asm volatile("prefetchnta %0" : : "m" (dptr[z][d+96]));
|
||||
asm volatile("vpcmpgtb %ymm4,%ymm1,%ymm5");
|
||||
asm volatile("vpcmpgtb %ymm6,%ymm1,%ymm7");
|
||||
asm volatile("vpcmpgtb %ymm12,%ymm1,%ymm13");
|
||||
asm volatile("vpcmpgtb %ymm14,%ymm1,%ymm15");
|
||||
asm volatile("vpaddb %ymm4,%ymm4,%ymm4");
|
||||
asm volatile("vpaddb %ymm6,%ymm6,%ymm6");
|
||||
asm volatile("vpaddb %ymm12,%ymm12,%ymm12");
|
||||
asm volatile("vpaddb %ymm14,%ymm14,%ymm14");
|
||||
asm volatile("vpand %ymm0,%ymm5,%ymm5");
|
||||
asm volatile("vpand %ymm0,%ymm7,%ymm7");
|
||||
asm volatile("vpand %ymm0,%ymm13,%ymm13");
|
||||
asm volatile("vpand %ymm0,%ymm15,%ymm15");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm7,%ymm6,%ymm6");
|
||||
asm volatile("vpxor %ymm13,%ymm12,%ymm12");
|
||||
asm volatile("vpxor %ymm15,%ymm14,%ymm14");
|
||||
asm volatile("vmovdqa %0,%%ymm5" : : "m" (dptr[z][d]));
|
||||
asm volatile("vmovdqa %0,%%ymm7" : : "m" (dptr[z][d+32]));
|
||||
asm volatile("vmovdqa %0,%%ymm13" : : "m" (dptr[z][d+64]));
|
||||
asm volatile("vmovdqa %0,%%ymm15" : : "m" (dptr[z][d+96]));
|
||||
asm volatile("vpxor %ymm5,%ymm2,%ymm2");
|
||||
asm volatile("vpxor %ymm7,%ymm3,%ymm3");
|
||||
asm volatile("vpxor %ymm13,%ymm10,%ymm10");
|
||||
asm volatile("vpxor %ymm15,%ymm11,%ymm11");
|
||||
asm volatile("vpxor %ymm5,%ymm4,%ymm4");
|
||||
asm volatile("vpxor %ymm7,%ymm6,%ymm6");
|
||||
asm volatile("vpxor %ymm13,%ymm12,%ymm12");
|
||||
asm volatile("vpxor %ymm15,%ymm14,%ymm14");
|
||||
}
|
||||
asm volatile("vmovntdq %%ymm2,%0" : "=m" (p[d]));
|
||||
asm volatile("vpxor %ymm2,%ymm2,%ymm2");
|
||||
asm volatile("vmovntdq %%ymm3,%0" : "=m" (p[d+32]));
|
||||
asm volatile("vpxor %ymm3,%ymm3,%ymm3");
|
||||
asm volatile("vmovntdq %%ymm10,%0" : "=m" (p[d+64]));
|
||||
asm volatile("vpxor %ymm10,%ymm10,%ymm10");
|
||||
asm volatile("vmovntdq %%ymm11,%0" : "=m" (p[d+96]));
|
||||
asm volatile("vpxor %ymm11,%ymm11,%ymm11");
|
||||
asm volatile("vmovntdq %%ymm4,%0" : "=m" (q[d]));
|
||||
asm volatile("vpxor %ymm4,%ymm4,%ymm4");
|
||||
asm volatile("vmovntdq %%ymm6,%0" : "=m" (q[d+32]));
|
||||
asm volatile("vpxor %ymm6,%ymm6,%ymm6");
|
||||
asm volatile("vmovntdq %%ymm12,%0" : "=m" (q[d+64]));
|
||||
asm volatile("vpxor %ymm12,%ymm12,%ymm12");
|
||||
asm volatile("vmovntdq %%ymm14,%0" : "=m" (q[d+96]));
|
||||
asm volatile("vpxor %ymm14,%ymm14,%ymm14");
|
||||
}
|
||||
|
||||
asm volatile("sfence" : : : "memory");
|
||||
kernel_fpu_end();
|
||||
}
|
||||
|
||||
const struct raid6_calls raid6_avx2x4 = {
|
||||
raid6_avx24_gen_syndrome,
|
||||
raid6_have_avx2,
|
||||
"avx2x4",
|
||||
1 /* Has cache hints */
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_AS_AVX2 */
|
@ -16,7 +16,7 @@
|
||||
* MMX implementation of RAID-6 syndrome functions
|
||||
*/
|
||||
|
||||
#if defined(__i386__) && !defined(__arch_um__)
|
||||
#ifdef CONFIG_X86_32
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
323
lib/raid6/recov_avx2.c
Normal file
323
lib/raid6/recov_avx2.c
Normal file
@ -0,0 +1,323 @@
|
||||
/*
|
||||
* Copyright (C) 2012 Intel Corporation
|
||||
* Author: Jim Kukunas <james.t.kukunas@linux.intel.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; version 2
|
||||
* of the License.
|
||||
*/
|
||||
|
||||
#if CONFIG_AS_AVX2
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
||||
static int raid6_has_avx2(void)
|
||||
{
|
||||
return boot_cpu_has(X86_FEATURE_AVX2) &&
|
||||
boot_cpu_has(X86_FEATURE_AVX);
|
||||
}
|
||||
|
||||
static void raid6_2data_recov_avx2(int disks, size_t bytes, int faila,
|
||||
int failb, void **ptrs)
|
||||
{
|
||||
u8 *p, *q, *dp, *dq;
|
||||
const u8 *pbmul; /* P multiplier table for B data */
|
||||
const u8 *qmul; /* Q multiplier table (for both) */
|
||||
const u8 x0f = 0x0f;
|
||||
|
||||
p = (u8 *)ptrs[disks-2];
|
||||
q = (u8 *)ptrs[disks-1];
|
||||
|
||||
/* Compute syndrome with zero for the missing data pages
|
||||
Use the dead data pages as temporary storage for
|
||||
delta p and delta q */
|
||||
dp = (u8 *)ptrs[faila];
|
||||
ptrs[faila] = (void *)raid6_empty_zero_page;
|
||||
ptrs[disks-2] = dp;
|
||||
dq = (u8 *)ptrs[failb];
|
||||
ptrs[failb] = (void *)raid6_empty_zero_page;
|
||||
ptrs[disks-1] = dq;
|
||||
|
||||
raid6_call.gen_syndrome(disks, bytes, ptrs);
|
||||
|
||||
/* Restore pointer table */
|
||||
ptrs[faila] = dp;
|
||||
ptrs[failb] = dq;
|
||||
ptrs[disks-2] = p;
|
||||
ptrs[disks-1] = q;
|
||||
|
||||
/* Now, pick the proper data tables */
|
||||
pbmul = raid6_vgfmul[raid6_gfexi[failb-faila]];
|
||||
qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila] ^
|
||||
raid6_gfexp[failb]]];
|
||||
|
||||
kernel_fpu_begin();
|
||||
|
||||
/* ymm0 = x0f[16] */
|
||||
asm volatile("vpbroadcastb %0, %%ymm7" : : "m" (x0f));
|
||||
|
||||
while (bytes) {
|
||||
#ifdef CONFIG_X86_64
|
||||
asm volatile("vmovdqa %0, %%ymm1" : : "m" (q[0]));
|
||||
asm volatile("vmovdqa %0, %%ymm9" : : "m" (q[32]));
|
||||
asm volatile("vmovdqa %0, %%ymm0" : : "m" (p[0]));
|
||||
asm volatile("vmovdqa %0, %%ymm8" : : "m" (p[32]));
|
||||
asm volatile("vpxor %0, %%ymm1, %%ymm1" : : "m" (dq[0]));
|
||||
asm volatile("vpxor %0, %%ymm9, %%ymm9" : : "m" (dq[32]));
|
||||
asm volatile("vpxor %0, %%ymm0, %%ymm0" : : "m" (dp[0]));
|
||||
asm volatile("vpxor %0, %%ymm8, %%ymm8" : : "m" (dp[32]));
|
||||
|
||||
/*
|
||||
* 1 = dq[0] ^ q[0]
|
||||
* 9 = dq[32] ^ q[32]
|
||||
* 0 = dp[0] ^ p[0]
|
||||
* 8 = dp[32] ^ p[32]
|
||||
*/
|
||||
|
||||
asm volatile("vbroadcasti128 %0, %%ymm4" : : "m" (qmul[0]));
|
||||
asm volatile("vbroadcasti128 %0, %%ymm5" : : "m" (qmul[16]));
|
||||
|
||||
asm volatile("vpsraw $4, %ymm1, %ymm3");
|
||||
asm volatile("vpsraw $4, %ymm9, %ymm12");
|
||||
asm volatile("vpand %ymm7, %ymm1, %ymm1");
|
||||
asm volatile("vpand %ymm7, %ymm9, %ymm9");
|
||||
asm volatile("vpand %ymm7, %ymm3, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm12, %ymm12");
|
||||
asm volatile("vpshufb %ymm9, %ymm4, %ymm14");
|
||||
asm volatile("vpshufb %ymm1, %ymm4, %ymm4");
|
||||
asm volatile("vpshufb %ymm12, %ymm5, %ymm15");
|
||||
asm volatile("vpshufb %ymm3, %ymm5, %ymm5");
|
||||
asm volatile("vpxor %ymm14, %ymm15, %ymm15");
|
||||
asm volatile("vpxor %ymm4, %ymm5, %ymm5");
|
||||
|
||||
/*
|
||||
* 5 = qx[0]
|
||||
* 15 = qx[32]
|
||||
*/
|
||||
|
||||
asm volatile("vbroadcasti128 %0, %%ymm4" : : "m" (pbmul[0]));
|
||||
asm volatile("vbroadcasti128 %0, %%ymm1" : : "m" (pbmul[16]));
|
||||
asm volatile("vpsraw $4, %ymm0, %ymm2");
|
||||
asm volatile("vpsraw $4, %ymm8, %ymm6");
|
||||
asm volatile("vpand %ymm7, %ymm0, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm8, %ymm14");
|
||||
asm volatile("vpand %ymm7, %ymm2, %ymm2");
|
||||
asm volatile("vpand %ymm7, %ymm6, %ymm6");
|
||||
asm volatile("vpshufb %ymm14, %ymm4, %ymm12");
|
||||
asm volatile("vpshufb %ymm3, %ymm4, %ymm4");
|
||||
asm volatile("vpshufb %ymm6, %ymm1, %ymm13");
|
||||
asm volatile("vpshufb %ymm2, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm4, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm12, %ymm13, %ymm13");
|
||||
|
||||
/*
|
||||
* 1 = pbmul[px[0]]
|
||||
* 13 = pbmul[px[32]]
|
||||
*/
|
||||
asm volatile("vpxor %ymm5, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm15, %ymm13, %ymm13");
|
||||
|
||||
/*
|
||||
* 1 = db = DQ
|
||||
* 13 = db[32] = DQ[32]
|
||||
*/
|
||||
asm volatile("vmovdqa %%ymm1, %0" : "=m" (dq[0]));
|
||||
asm volatile("vmovdqa %%ymm13,%0" : "=m" (dq[32]));
|
||||
asm volatile("vpxor %ymm1, %ymm0, %ymm0");
|
||||
asm volatile("vpxor %ymm13, %ymm8, %ymm8");
|
||||
|
||||
asm volatile("vmovdqa %%ymm0, %0" : "=m" (dp[0]));
|
||||
asm volatile("vmovdqa %%ymm8, %0" : "=m" (dp[32]));
|
||||
|
||||
bytes -= 64;
|
||||
p += 64;
|
||||
q += 64;
|
||||
dp += 64;
|
||||
dq += 64;
|
||||
#else
|
||||
asm volatile("vmovdqa %0, %%ymm1" : : "m" (*q));
|
||||
asm volatile("vmovdqa %0, %%ymm0" : : "m" (*p));
|
||||
asm volatile("vpxor %0, %%ymm1, %%ymm1" : : "m" (*dq));
|
||||
asm volatile("vpxor %0, %%ymm0, %%ymm0" : : "m" (*dp));
|
||||
|
||||
/* 1 = dq ^ q; 0 = dp ^ p */
|
||||
|
||||
asm volatile("vbroadcasti128 %0, %%ymm4" : : "m" (qmul[0]));
|
||||
asm volatile("vbroadcasti128 %0, %%ymm5" : : "m" (qmul[16]));
|
||||
|
||||
/*
|
||||
* 1 = dq ^ q
|
||||
* 3 = dq ^ p >> 4
|
||||
*/
|
||||
asm volatile("vpsraw $4, %ymm1, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm1, %ymm1");
|
||||
asm volatile("vpand %ymm7, %ymm3, %ymm3");
|
||||
asm volatile("vpshufb %ymm1, %ymm4, %ymm4");
|
||||
asm volatile("vpshufb %ymm3, %ymm5, %ymm5");
|
||||
asm volatile("vpxor %ymm4, %ymm5, %ymm5");
|
||||
|
||||
/* 5 = qx */
|
||||
|
||||
asm volatile("vbroadcasti128 %0, %%ymm4" : : "m" (pbmul[0]));
|
||||
asm volatile("vbroadcasti128 %0, %%ymm1" : : "m" (pbmul[16]));
|
||||
|
||||
asm volatile("vpsraw $4, %ymm0, %ymm2");
|
||||
asm volatile("vpand %ymm7, %ymm0, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm2, %ymm2");
|
||||
asm volatile("vpshufb %ymm3, %ymm4, %ymm4");
|
||||
asm volatile("vpshufb %ymm2, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm4, %ymm1, %ymm1");
|
||||
|
||||
/* 1 = pbmul[px] */
|
||||
asm volatile("vpxor %ymm5, %ymm1, %ymm1");
|
||||
/* 1 = db = DQ */
|
||||
asm volatile("vmovdqa %%ymm1, %0" : "=m" (dq[0]));
|
||||
|
||||
asm volatile("vpxor %ymm1, %ymm0, %ymm0");
|
||||
asm volatile("vmovdqa %%ymm0, %0" : "=m" (dp[0]));
|
||||
|
||||
bytes -= 32;
|
||||
p += 32;
|
||||
q += 32;
|
||||
dp += 32;
|
||||
dq += 32;
|
||||
#endif
|
||||
}
|
||||
|
||||
kernel_fpu_end();
|
||||
}
|
||||
|
||||
static void raid6_datap_recov_avx2(int disks, size_t bytes, int faila,
|
||||
void **ptrs)
|
||||
{
|
||||
u8 *p, *q, *dq;
|
||||
const u8 *qmul; /* Q multiplier table */
|
||||
const u8 x0f = 0x0f;
|
||||
|
||||
p = (u8 *)ptrs[disks-2];
|
||||
q = (u8 *)ptrs[disks-1];
|
||||
|
||||
/* Compute syndrome with zero for the missing data page
|
||||
Use the dead data page as temporary storage for delta q */
|
||||
dq = (u8 *)ptrs[faila];
|
||||
ptrs[faila] = (void *)raid6_empty_zero_page;
|
||||
ptrs[disks-1] = dq;
|
||||
|
||||
raid6_call.gen_syndrome(disks, bytes, ptrs);
|
||||
|
||||
/* Restore pointer table */
|
||||
ptrs[faila] = dq;
|
||||
ptrs[disks-1] = q;
|
||||
|
||||
/* Now, pick the proper data tables */
|
||||
qmul = raid6_vgfmul[raid6_gfinv[raid6_gfexp[faila]]];
|
||||
|
||||
kernel_fpu_begin();
|
||||
|
||||
asm volatile("vpbroadcastb %0, %%ymm7" : : "m" (x0f));
|
||||
|
||||
while (bytes) {
|
||||
#ifdef CONFIG_X86_64
|
||||
asm volatile("vmovdqa %0, %%ymm3" : : "m" (dq[0]));
|
||||
asm volatile("vmovdqa %0, %%ymm8" : : "m" (dq[32]));
|
||||
asm volatile("vpxor %0, %%ymm3, %%ymm3" : : "m" (q[0]));
|
||||
asm volatile("vpxor %0, %%ymm8, %%ymm8" : : "m" (q[32]));
|
||||
|
||||
/*
|
||||
* 3 = q[0] ^ dq[0]
|
||||
* 8 = q[32] ^ dq[32]
|
||||
*/
|
||||
asm volatile("vbroadcasti128 %0, %%ymm0" : : "m" (qmul[0]));
|
||||
asm volatile("vmovapd %ymm0, %ymm13");
|
||||
asm volatile("vbroadcasti128 %0, %%ymm1" : : "m" (qmul[16]));
|
||||
asm volatile("vmovapd %ymm1, %ymm14");
|
||||
|
||||
asm volatile("vpsraw $4, %ymm3, %ymm6");
|
||||
asm volatile("vpsraw $4, %ymm8, %ymm12");
|
||||
asm volatile("vpand %ymm7, %ymm3, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm8, %ymm8");
|
||||
asm volatile("vpand %ymm7, %ymm6, %ymm6");
|
||||
asm volatile("vpand %ymm7, %ymm12, %ymm12");
|
||||
asm volatile("vpshufb %ymm3, %ymm0, %ymm0");
|
||||
asm volatile("vpshufb %ymm8, %ymm13, %ymm13");
|
||||
asm volatile("vpshufb %ymm6, %ymm1, %ymm1");
|
||||
asm volatile("vpshufb %ymm12, %ymm14, %ymm14");
|
||||
asm volatile("vpxor %ymm0, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm13, %ymm14, %ymm14");
|
||||
|
||||
/*
|
||||
* 1 = qmul[q[0] ^ dq[0]]
|
||||
* 14 = qmul[q[32] ^ dq[32]]
|
||||
*/
|
||||
asm volatile("vmovdqa %0, %%ymm2" : : "m" (p[0]));
|
||||
asm volatile("vmovdqa %0, %%ymm12" : : "m" (p[32]));
|
||||
asm volatile("vpxor %ymm1, %ymm2, %ymm2");
|
||||
asm volatile("vpxor %ymm14, %ymm12, %ymm12");
|
||||
|
||||
/*
|
||||
* 2 = p[0] ^ qmul[q[0] ^ dq[0]]
|
||||
* 12 = p[32] ^ qmul[q[32] ^ dq[32]]
|
||||
*/
|
||||
|
||||
asm volatile("vmovdqa %%ymm1, %0" : "=m" (dq[0]));
|
||||
asm volatile("vmovdqa %%ymm14, %0" : "=m" (dq[32]));
|
||||
asm volatile("vmovdqa %%ymm2, %0" : "=m" (p[0]));
|
||||
asm volatile("vmovdqa %%ymm12,%0" : "=m" (p[32]));
|
||||
|
||||
bytes -= 64;
|
||||
p += 64;
|
||||
q += 64;
|
||||
dq += 64;
|
||||
#else
|
||||
asm volatile("vmovdqa %0, %%ymm3" : : "m" (dq[0]));
|
||||
asm volatile("vpxor %0, %%ymm3, %%ymm3" : : "m" (q[0]));
|
||||
|
||||
/* 3 = q ^ dq */
|
||||
|
||||
asm volatile("vbroadcasti128 %0, %%ymm0" : : "m" (qmul[0]));
|
||||
asm volatile("vbroadcasti128 %0, %%ymm1" : : "m" (qmul[16]));
|
||||
|
||||
asm volatile("vpsraw $4, %ymm3, %ymm6");
|
||||
asm volatile("vpand %ymm7, %ymm3, %ymm3");
|
||||
asm volatile("vpand %ymm7, %ymm6, %ymm6");
|
||||
asm volatile("vpshufb %ymm3, %ymm0, %ymm0");
|
||||
asm volatile("vpshufb %ymm6, %ymm1, %ymm1");
|
||||
asm volatile("vpxor %ymm0, %ymm1, %ymm1");
|
||||
|
||||
/* 1 = qmul[q ^ dq] */
|
||||
|
||||
asm volatile("vmovdqa %0, %%ymm2" : : "m" (p[0]));
|
||||
asm volatile("vpxor %ymm1, %ymm2, %ymm2");
|
||||
|
||||
/* 2 = p ^ qmul[q ^ dq] */
|
||||
|
||||
asm volatile("vmovdqa %%ymm1, %0" : "=m" (dq[0]));
|
||||
asm volatile("vmovdqa %%ymm2, %0" : "=m" (p[0]));
|
||||
|
||||
bytes -= 32;
|
||||
p += 32;
|
||||
q += 32;
|
||||
dq += 32;
|
||||
#endif
|
||||
}
|
||||
|
||||
kernel_fpu_end();
|
||||
}
|
||||
|
||||
const struct raid6_recov_calls raid6_recov_avx2 = {
|
||||
.data2 = raid6_2data_recov_avx2,
|
||||
.datap = raid6_datap_recov_avx2,
|
||||
.valid = raid6_has_avx2,
|
||||
#ifdef CONFIG_X86_64
|
||||
.name = "avx2x2",
|
||||
#else
|
||||
.name = "avx2x1",
|
||||
#endif
|
||||
.priority = 2,
|
||||
};
|
||||
|
||||
#else
|
||||
#warning "your version of binutils lacks AVX2 support"
|
||||
#endif
|
@ -7,8 +7,6 @@
|
||||
* of the License.
|
||||
*/
|
||||
|
||||
#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
||||
@ -332,5 +330,3 @@ const struct raid6_recov_calls raid6_recov_ssse3 = {
|
||||
#endif
|
||||
.priority = 1,
|
||||
};
|
||||
|
||||
#endif
|
||||
|
@ -21,7 +21,7 @@
|
||||
* worthwhile as a separate implementation.
|
||||
*/
|
||||
|
||||
#if defined(__i386__) && !defined(__arch_um__)
|
||||
#ifdef CONFIG_X86_32
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
@ -17,8 +17,6 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
|
||||
|
||||
#include <linux/raid/pq.h>
|
||||
#include "x86.h"
|
||||
|
||||
@ -159,9 +157,7 @@ const struct raid6_calls raid6_sse2x2 = {
|
||||
1 /* Has cache hints */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(__x86_64__) && !defined(__arch_um__)
|
||||
#ifdef CONFIG_X86_64
|
||||
|
||||
/*
|
||||
* Unrolled-by-4 SSE2 implementation
|
||||
@ -259,4 +255,4 @@ const struct raid6_calls raid6_sse2x4 = {
|
||||
1 /* Has cache hints */
|
||||
};
|
||||
|
||||
#endif
|
||||
#endif /* CONFIG_X86_64 */
|
||||
|
@ -10,6 +10,31 @@ LD = ld
|
||||
AWK = awk -f
|
||||
AR = ar
|
||||
RANLIB = ranlib
|
||||
OBJS = int1.o int2.o int4.o int8.o int16.o int32.o recov.o algos.o tables.o
|
||||
|
||||
ARCH := $(shell uname -m 2>/dev/null | sed -e /s/i.86/i386/)
|
||||
ifeq ($(ARCH),i386)
|
||||
CFLAGS += -DCONFIG_X86_32
|
||||
IS_X86 = yes
|
||||
endif
|
||||
ifeq ($(ARCH),x86_64)
|
||||
CFLAGS += -DCONFIG_X86_64
|
||||
IS_X86 = yes
|
||||
endif
|
||||
|
||||
ifeq ($(IS_X86),yes)
|
||||
OBJS += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o
|
||||
CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" | \
|
||||
gcc -c -x assembler - >&/dev/null && \
|
||||
rm ./-.o && echo -DCONFIG_AS_AVX2=1)
|
||||
else
|
||||
HAS_ALTIVEC := $(shell echo -e '\#include <altivec.h>\nvector int a;' |\
|
||||
gcc -c -x c - >&/dev/null && \
|
||||
rm ./-.o && echo yes)
|
||||
ifeq ($(HAS_ALTIVEC),yes)
|
||||
OBJS += altivec1.o altivec2.o altivec4.o altivec8.o
|
||||
endif
|
||||
endif
|
||||
|
||||
.c.o:
|
||||
$(CC) $(CFLAGS) -c -o $@ $<
|
||||
@ -22,9 +47,7 @@ RANLIB = ranlib
|
||||
|
||||
all: raid6.a raid6test
|
||||
|
||||
raid6.a: int1.o int2.o int4.o int8.o int16.o int32.o mmx.o sse1.o sse2.o \
|
||||
altivec1.o altivec2.o altivec4.o altivec8.o recov.o recov_ssse3.o algos.o \
|
||||
tables.o
|
||||
raid6.a: $(OBJS)
|
||||
rm -f $@
|
||||
$(AR) cq $@ $^
|
||||
$(RANLIB) $@
|
||||
|
@ -45,19 +45,23 @@ static inline void kernel_fpu_end(void)
|
||||
#define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */
|
||||
#define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */
|
||||
#define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */
|
||||
#define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */
|
||||
#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
|
||||
|
||||
/* Should work well enough on modern CPUs for testing */
|
||||
static inline int boot_cpu_has(int flag)
|
||||
{
|
||||
u32 eax = (flag & 0x20) ? 0x80000001 : 1;
|
||||
u32 ecx, edx;
|
||||
u32 eax, ebx, ecx, edx;
|
||||
|
||||
eax = (flag & 0x100) ? 7 :
|
||||
(flag & 0x20) ? 0x80000001 : 1;
|
||||
ecx = 0;
|
||||
|
||||
asm volatile("cpuid"
|
||||
: "+a" (eax), "=d" (edx), "=c" (ecx)
|
||||
: : "ebx");
|
||||
: "+a" (eax), "=b" (ebx), "=d" (edx), "+c" (ecx));
|
||||
|
||||
return ((flag & 0x80 ? ecx : edx) >> (flag & 31)) & 1;
|
||||
return ((flag & 0x100 ? ebx :
|
||||
(flag & 0x80) ? ecx : edx) >> (flag & 31)) & 1;
|
||||
}
|
||||
|
||||
#endif /* ndef __KERNEL__ */
|
||||
|
Loading…
Reference in New Issue
Block a user