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mm/hugetlb_cgroup: switch to the new cftypes

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The previous patch has already reconstructed the cftype attributes based
on the templates and saved them in dfl_cftypes and legacy_cftypes.  then
remove the old procedure and switch to the new cftypes.

Link: https://lkml.kernel.org/r/20240612092409.2027592-4-xiujianfeng@huawei.com
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Xiu Jianfeng 2024-06-12 09:24:09 +00:00 committed by Andrew Morton
parent 47179fe035
commit b79d715c43
2 changed files with 17 additions and 151 deletions
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5
include/linux/hugetlb.h
View File

@ -686,11 +686,6 @@ struct hstate {
unsigned int nr_huge_pages_node[MAX_NUMNODES];
unsigned int free_huge_pages_node[MAX_NUMNODES];
unsigned int surplus_huge_pages_node[MAX_NUMNODES];
#ifdef CONFIG_CGROUP_HUGETLB
/* cgroup control files */
struct cftype cgroup_files_dfl[8];
struct cftype cgroup_files_legacy[10];
#endif
char name[HSTATE_NAME_LEN];
};

163
mm/hugetlb_cgroup.c
View File

@ -841,164 +841,26 @@ hugetlb_cgroup_cfttypes_init(struct hstate *h, struct cftype *cft,
}
}
static void __init __hugetlb_cgroup_file_dfl_init(int idx)
static void __init __hugetlb_cgroup_file_dfl_init(struct hstate *h)
{
char buf[32];
struct cftype *cft;
struct hstate *h = &hstates[idx];
int idx = hstate_index(h);
hugetlb_cgroup_cfttypes_init(h, dfl_files + idx * DFL_TMPL_SIZE,
hugetlb_dfl_tmpl, DFL_TMPL_SIZE);
/* format the size */
mem_fmt(buf, sizeof(buf), huge_page_size(h));
/* Add the limit file */
cft = &h->cgroup_files_dfl[0];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.max", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_LIMIT);
cft->seq_show = hugetlb_cgroup_read_u64_max;
cft->write = hugetlb_cgroup_write_dfl;
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the reservation limit file */
cft = &h->cgroup_files_dfl[1];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.max", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_LIMIT);
cft->seq_show = hugetlb_cgroup_read_u64_max;
cft->write = hugetlb_cgroup_write_dfl;
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the current usage file */
cft = &h->cgroup_files_dfl[2];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.current", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_USAGE);
cft->seq_show = hugetlb_cgroup_read_u64_max;
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the current reservation usage file */
cft = &h->cgroup_files_dfl[3];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.current", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_USAGE);
cft->seq_show = hugetlb_cgroup_read_u64_max;
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the events file */
cft = &h->cgroup_files_dfl[4];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.events", buf);
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_events_show;
cft->file_offset = offsetof(struct hugetlb_cgroup, events_file[idx]);
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the events.local file */
cft = &h->cgroup_files_dfl[5];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.events.local", buf);
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_events_local_show;
cft->file_offset = offsetof(struct hugetlb_cgroup,
events_local_file[idx]);
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the numa stat file */
cft = &h->cgroup_files_dfl[6];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.numa_stat", buf);
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_cgroup_read_numa_stat;
cft->flags = CFTYPE_NOT_ON_ROOT;
/* NULL terminate the last cft */
cft = &h->cgroup_files_dfl[7];
memset(cft, 0, sizeof(*cft));
WARN_ON(cgroup_add_dfl_cftypes(&hugetlb_cgrp_subsys,
h->cgroup_files_dfl));
}
static void __init __hugetlb_cgroup_file_legacy_init(int idx)
static void __init __hugetlb_cgroup_file_legacy_init(struct hstate *h)
{
char buf[32];
struct cftype *cft;
struct hstate *h = &hstates[idx];
int idx = hstate_index(h);
hugetlb_cgroup_cfttypes_init(h, legacy_files + idx * LEGACY_TMPL_SIZE,
hugetlb_legacy_tmpl, LEGACY_TMPL_SIZE);
/* format the size */
mem_fmt(buf, sizeof(buf), huge_page_size(h));
/* Add the limit file */
cft = &h->cgroup_files_legacy[0];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.limit_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_LIMIT);
cft->read_u64 = hugetlb_cgroup_read_u64;
cft->write = hugetlb_cgroup_write_legacy;
/* Add the reservation limit file */
cft = &h->cgroup_files_legacy[1];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.limit_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_LIMIT);
cft->read_u64 = hugetlb_cgroup_read_u64;
cft->write = hugetlb_cgroup_write_legacy;
/* Add the usage file */
cft = &h->cgroup_files_legacy[2];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.usage_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_USAGE);
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the reservation usage file */
cft = &h->cgroup_files_legacy[3];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.usage_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_USAGE);
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the MAX usage file */
cft = &h->cgroup_files_legacy[4];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.max_usage_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_MAX_USAGE);
cft->write = hugetlb_cgroup_reset;
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the MAX reservation usage file */
cft = &h->cgroup_files_legacy[5];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.max_usage_in_bytes", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_MAX_USAGE);
cft->write = hugetlb_cgroup_reset;
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the failcntfile */
cft = &h->cgroup_files_legacy[6];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.failcnt", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_FAILCNT);
cft->write = hugetlb_cgroup_reset;
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the reservation failcntfile */
cft = &h->cgroup_files_legacy[7];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.rsvd.failcnt", buf);
cft->private = MEMFILE_PRIVATE(idx, RES_RSVD_FAILCNT);
cft->write = hugetlb_cgroup_reset;
cft->read_u64 = hugetlb_cgroup_read_u64;
/* Add the numa stat file */
cft = &h->cgroup_files_legacy[8];
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.numa_stat", buf);
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_cgroup_read_numa_stat;
/* NULL terminate the last cft */
cft = &h->cgroup_files_legacy[9];
memset(cft, 0, sizeof(*cft));
WARN_ON(cgroup_add_legacy_cftypes(&hugetlb_cgrp_subsys,
h->cgroup_files_legacy));
}
static void __init __hugetlb_cgroup_file_init(int idx)
static void __init __hugetlb_cgroup_file_init(struct hstate *h)
{
__hugetlb_cgroup_file_dfl_init(idx);
__hugetlb_cgroup_file_legacy_init(idx);
__hugetlb_cgroup_file_dfl_init(h);
__hugetlb_cgroup_file_legacy_init(h);
}
static void __init __hugetlb_cgroup_file_pre_init(void)
@ -1013,13 +875,22 @@ static void __init __hugetlb_cgroup_file_pre_init(void)
BUG_ON(!legacy_files);
}
static void __init __hugetlb_cgroup_file_post_init(void)
{
WARN_ON(cgroup_add_dfl_cftypes(&hugetlb_cgrp_subsys,
dfl_files));
WARN_ON(cgroup_add_legacy_cftypes(&hugetlb_cgrp_subsys,
legacy_files));
}
void __init hugetlb_cgroup_file_init(void)
{
struct hstate *h;
__hugetlb_cgroup_file_pre_init();
for_each_hstate(h)
__hugetlb_cgroup_file_init(hstate_index(h));
__hugetlb_cgroup_file_init(h);
__hugetlb_cgroup_file_post_init();
}
/*