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Message-ID: <202311230726.PROfM0Z7-lkp@intel.com>
Date: Thu, 23 Nov 2023 11:11:16 +0800
From: kernel test robot <lkp@...el.com>
To: Ilya Dryomov <idryomov@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: net/ceph/crush/mapper.c:466: warning: No description found for
parameter 'choose_args'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9b6de136b5f0158c60844f85286a593cb70fb364
commit: 069f3222ca96acfe8c59937e98c401bda5475b48 crush: implement weight and id overrides for straw2
date: 6 years ago
config: i386-buildonly-randconfig-004-20231120 (https://download.01.org/0day-ci/archive/20231123/202311230726.PROfM0Z7-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231123/202311230726.PROfM0Z7-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311230726.PROfM0Z7-lkp@intel.com/
All warnings (new ones prefixed by >>):
net/ceph/crush/mapper.c:466: warning: No description found for parameter 'work'
net/ceph/crush/mapper.c:466: warning: No description found for parameter 'weight'
net/ceph/crush/mapper.c:466: warning: No description found for parameter 'weight_max'
>> net/ceph/crush/mapper.c:466: warning: No description found for parameter 'choose_args'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'map'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'work'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'bucket'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'weight'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'weight_max'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'x'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'left'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'numrep'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'type'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'out'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'outpos'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'tries'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'recurse_tries'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'recurse_to_leaf'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'out2'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'parent_r'
net/ceph/crush/mapper.c:655: warning: No description found for parameter 'choose_args'
vim +/choose_args +466 net/ceph/crush/mapper.c
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 428
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 429 /**
9fe07182827d99 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 430 * crush_choose_firstn - choose numrep distinct items of given type
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 431 * @map: the crush_map
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 432 * @bucket: the bucket we are choose an item from
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 433 * @x: crush input value
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 434 * @numrep: the number of items to choose
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 435 * @type: the type of item to choose
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 436 * @out: pointer to output vector
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 437 * @outpos: our position in that vector
45002267e8d269 net/ceph/crush/mapper.c Ilya Dryomov 2015-04-14 438 * @out_size: size of the out vector
0e32d7126cdf30 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 439 * @tries: number of attempts to make
0e32d7126cdf30 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 440 * @recurse_tries: number of attempts to have recursive chooseleaf make
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 441 * @local_retries: localized retries
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 442 * @local_fallback_retries: localized fallback retries
0e32d7126cdf30 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 443 * @recurse_to_leaf: true if we want one device under each item of given type (chooseleaf instead of choose)
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 444 * @stable: stable mode starts rep=0 in the recursive call for all replicas
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 445 * @vary_r: pass r to recursive calls
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 446 * @out2: second output vector for leaf items (if @recurse_to_leaf)
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 447 * @parent_r: r value passed from the parent
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 448 */
9fe07182827d99 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 449 static int crush_choose_firstn(const struct crush_map *map,
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 450 struct crush_work *work,
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 451 const struct crush_bucket *bucket,
b3b33b0e43323a net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 452 const __u32 *weight, int weight_max,
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 453 int x, int numrep, int type,
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 454 int *out, int outpos,
45002267e8d269 net/ceph/crush/mapper.c Ilya Dryomov 2015-04-14 455 int out_size,
2d8be0bc8bc2dc net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 456 unsigned int tries,
2d8be0bc8bc2dc net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 457 unsigned int recurse_tries,
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 458 unsigned int local_retries,
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 459 unsigned int local_fallback_retries,
9fe07182827d99 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 460 int recurse_to_leaf,
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 461 unsigned int vary_r,
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 462 unsigned int stable,
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 463 int *out2,
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 464 int parent_r,
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 465 const struct crush_choose_arg *choose_args)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 @466 {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 467 int rep;
8b12d47b80c7a3 net/ceph/crush/mapper.c Sage Weil 2012-05-07 468 unsigned int ftotal, flocal;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 469 int retry_descent, retry_bucket, skip_rep;
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 470 const struct crush_bucket *in = bucket;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 471 int r;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 472 int i;
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 473 int item = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 474 int itemtype;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 475 int collide, reject;
45002267e8d269 net/ceph/crush/mapper.c Ilya Dryomov 2015-04-14 476 int count = out_size;
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 477
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 478 dprintk("CHOOSE%s bucket %d x %d outpos %d numrep %d tries %d recurse_tries %d local_retries %d local_fallback_retries %d parent_r %d stable %d\n",
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 479 recurse_to_leaf ? "_LEAF" : "",
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 480 bucket->id, x, outpos, numrep,
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 481 tries, recurse_tries, local_retries, local_fallback_retries,
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 482 parent_r, stable);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 483
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 484 for (rep = stable ? 0 : outpos; rep < numrep && count > 0 ; rep++) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 485 /* keep trying until we get a non-out, non-colliding item */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 486 ftotal = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 487 skip_rep = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 488 do {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 489 retry_descent = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 490 in = bucket; /* initial bucket */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 491
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 492 /* choose through intervening buckets */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 493 flocal = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 494 do {
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 495 collide = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 496 retry_bucket = 0;
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 497 r = rep + parent_r;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 498 /* r' = r + f_total */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 499 r += ftotal;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 500
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 501 /* bucket choose */
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 502 if (in->size == 0) {
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 503 reject = 1;
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 504 goto reject;
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 505 }
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 506 if (local_fallback_retries > 0 &&
546f04ef716dd4 net/ceph/crush/mapper.c Sage Weil 2012-07-30 507 flocal >= (in->size>>1) &&
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 508 flocal > local_fallback_retries)
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 509 item = bucket_perm_choose(
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 510 in, work->work[-1-in->id],
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 511 x, r);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 512 else
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 513 item = crush_bucket_choose(
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 514 in, work->work[-1-in->id],
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 515 x, r,
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 516 (choose_args ?
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 517 &choose_args[-1-in->id] : 0),
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 518 outpos);
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 519 if (item >= map->max_devices) {
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 520 dprintk(" bad item %d\n", item);
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 521 skip_rep = 1;
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 522 break;
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 523 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 524
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 525 /* desired type? */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 526 if (item < 0)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 527 itemtype = map->buckets[-1-item]->type;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 528 else
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 529 itemtype = 0;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 530 dprintk(" item %d type %d\n", item, itemtype);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 531
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 532 /* keep going? */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 533 if (itemtype != type) {
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 534 if (item >= 0 ||
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 535 (-1-item) >= map->max_buckets) {
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 536 dprintk(" bad item type %d\n", type);
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 537 skip_rep = 1;
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 538 break;
a1f4895be8bf1b net/ceph/crush/mapper.c Sage Weil 2012-05-07 539 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 540 in = map->buckets[-1-item];
55bda7aacd13f5 fs/ceph/crush/mapper.c Sage Weil 2010-06-24 541 retry_bucket = 1;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 542 continue;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 543 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 544
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 545 /* collision? */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 546 for (i = 0; i < outpos; i++) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 547 if (out[i] == item) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 548 collide = 1;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 549 break;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 550 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 551 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 552
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 553 reject = 0;
7d7c1f6136bac0 net/ceph/crush/mapper.c Sage Weil 2013-01-15 554 if (!collide && recurse_to_leaf) {
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 555 if (item < 0) {
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 556 int sub_r;
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 557 if (vary_r)
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 558 sub_r = r >> (vary_r-1);
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 559 else
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 560 sub_r = 0;
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 561 if (crush_choose_firstn(
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 562 map,
66a0e2d579dbec net/ceph/crush/mapper.c Ilya Dryomov 2017-01-31 563 work,
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 564 map->buckets[-1-item],
b3b33b0e43323a net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 565 weight, weight_max,
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 566 x, stable ? 1 : outpos+1, 0,
45002267e8d269 net/ceph/crush/mapper.c Ilya Dryomov 2015-04-14 567 out2, outpos, count,
2d8be0bc8bc2dc net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 568 recurse_tries, 0,
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 569 local_retries,
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 570 local_fallback_retries,
9fe07182827d99 net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 571 0,
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 572 vary_r,
dc6ae6d8e7726b net/ceph/crush/mapper.c Ilya Dryomov 2016-01-31 573 stable,
e2b149cc4ba007 net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 574 NULL,
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 575 sub_r,
069f3222ca96ac net/ceph/crush/mapper.c Ilya Dryomov 2017-06-22 576 choose_args) <= outpos)
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 577 /* didn't get leaf */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 578 reject = 1;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 579 } else {
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 580 /* we already have a leaf! */
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 581 out2[outpos] = item;
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 582 }
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 583 }
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 584
98ba6af728de99 net/ceph/crush/mapper.c Ilya Dryomov 2017-02-16 585 if (!reject && !collide) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 586 /* out? */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 587 if (itemtype == 0)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 588 reject = is_out(map, weight,
b3b33b0e43323a net/ceph/crush/mapper.c Ilya Dryomov 2013-12-24 589 weight_max,
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 590 item, x);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 591 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 592
b28813a61d6ffe fs/ceph/crush/mapper.c Sage Weil 2009-10-07 593 reject:
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 594 if (reject || collide) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 595 ftotal++;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 596 flocal++;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 597
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 598 if (collide && flocal <= local_retries)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 599 /* retry locally a few times */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 600 retry_bucket = 1;
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 601 else if (local_fallback_retries > 0 &&
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 602 flocal <= in->size + local_fallback_retries)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 603 /* exhaustive bucket search */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 604 retry_bucket = 1;
48a163dbb517eb net/ceph/crush/mapper.c Ilya Dryomov 2014-03-19 605 else if (ftotal < tries)
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 606 /* then retry descent */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 607 retry_descent = 1;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 608 else
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 609 /* else give up */
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 610 skip_rep = 1;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 611 dprintk(" reject %d collide %d "
8b12d47b80c7a3 net/ceph/crush/mapper.c Sage Weil 2012-05-07 612 "ftotal %u flocal %u\n",
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 613 reject, collide, ftotal,
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 614 flocal);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 615 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 616 } while (retry_bucket);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 617 } while (retry_descent);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 618
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 619 if (skip_rep) {
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 620 dprintk("skip rep\n");
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 621 continue;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 622 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 623
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 624 dprintk("CHOOSE got %d\n", item);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 625 out[outpos] = item;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 626 outpos++;
45002267e8d269 net/ceph/crush/mapper.c Ilya Dryomov 2015-04-14 627 count--;
b459be739f97e2 net/ceph/crush/mapper.c Ilya Dryomov 2015-06-12 628 #ifndef __KERNEL__
b459be739f97e2 net/ceph/crush/mapper.c Ilya Dryomov 2015-06-12 629 if (map->choose_tries && ftotal <= map->choose_total_tries)
b459be739f97e2 net/ceph/crush/mapper.c Ilya Dryomov 2015-06-12 630 map->choose_tries[ftotal]++;
b459be739f97e2 net/ceph/crush/mapper.c Ilya Dryomov 2015-06-12 631 #endif
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 632 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 633
a1a31e734241ae fs/ceph/crush/mapper.c Sage Weil 2010-06-24 634 dprintk("CHOOSE returns %d\n", outpos);
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 635 return outpos;
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 636 }
5ecc0a0f8128b1 fs/ceph/crush/mapper.c Sage Weil 2009-10-06 637
:::::: The code at line 466 was first introduced by commit
:::::: 5ecc0a0f8128b1876e8614638deaed49cc8b174c ceph: CRUSH mapping algorithm
:::::: TO: Sage Weil <sage@...dream.net>
:::::: CC: Sage Weil <sage@...dream.net>
--
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