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compat 5.8: use bio_{start,end}_io_acct where it may work

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This commit is contained in:
Thomas Schoebel-Theuer 2021-08-17 09:27:09 +02:00
parent 923be2e4a2
commit 35001fddb7
4 changed files with 58 additions and 1 deletions
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13
kernel/compat.h
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@ -240,6 +240,19 @@ extern int __oldcompat_unlink(
#define MARS_HAS_NEW_GENERIC_BLK_ACCOUNTING
#endif
/* Adapt to e722fff238bbfe6308d7778a8c2163c181bf998a
* after 956d510ee78caebc83c0eaeb892db5b239a36a06
* detected via 0512a75b98f847c2e9a4b664013424e603e202f7
* (see also 24d69293d9a561645e0b4d78c2fb179827e35f53)
* and disable the old methods.
*/
#ifdef BLK_STS_ZONE_RESOURCE
#define MARS_HAS_BIO_IO_ACCT
#undef MARS_HAS_GENERIC_BLK_ACCOUNTING
#undef MARS_HAS_OLD_BLK_ACCOUNTING
#undef MARS_HAS_NEW_GENERIC_BLK_ACCOUNTING
#endif
/* vfs stuff */
/* Adapt to

39
kernel/mars_if.c
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@ -102,7 +102,43 @@ static int device_minor = 0;
///////////////////////// linux operations ////////////////////////
#ifdef MARS_HAS_GENERIC_BLK_ACCOUNTING
#ifdef MARS_HAS_BIO_IO_ACCT
/* Now IO accounting is enabled by default.
* Thanks to Christoph Hellwig who simplified the upstream a lot.
*/
int mars_io_acct = 1;
static inline
void _if_start_io_acct(struct if_input *input, struct bio_wrapper *biow)
{
struct bio *bio;
if (!mars_io_acct)
return;
bio = biow->bio;
/* We cannot account at certain kernels when bi_disk is unknown.
*/
if (!bio || !bio->bi_disk)
return;
biow->start_time = bio_start_io_acct(bio);
}
static inline
void _if_end_io_acct(struct if_input *input, struct bio_wrapper *biow)
{
struct bio *bio;
if (!biow->start_time)
return;
bio = biow->bio;
bio_end_io_acct(bio, biow->start_time);
}
/* Check whether some old IO accounting methods are usable */
#elif defined(MARS_HAS_GENERIC_BLK_ACCOUNTING)
/* Disbaled by default, for saving overhead */
int mars_io_acct = 0;
@ -144,6 +180,7 @@ void _if_end_io_acct(struct if_input *input, struct bio_wrapper *biow)
biow->start_time);
}
/* To disappear in the long term */
#elif defined(MARS_HAS_OLD_BLK_ACCOUNTING)
static

4
kernel/mars_if.h
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@ -126,4 +126,8 @@ struct if_brick {
MARS_TYPES(if);
///////////////////////// statistics ////////////////////////
extern int mars_io_acct;
#endif

3
kernel/sy_old/mars_proc.c
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@ -538,6 +538,9 @@ struct ctl_table io_tuning_table[] = {
THRESHOLD_ENTRIES(&aio_io_threshold[1], "aio_io_w"),
THRESHOLD_ENTRIES(&aio_sync_threshold, "aio_sync"),
INT_ENTRY("if_nr_requests", if_nr_requests, 0600),
#if defined(MARS_HAS_BIO_IO_ACCT) || defined(MARS_HAS_GENERIC_BLK_ACCOUNTING)
INT_ENTRY("if_io_acct", mars_io_acct, 0600),
#endif
{}
};