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tracing/user_events: Charge event allocs to cgroups

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Operators need a way to limit how much memory cgroups use. User events need
to be included into that accounting. Fix this by using GFP_KERNEL_ACCOUNT
for allocations generated by user programs for user_event tracing.

Link: https://lkml.kernel.org/r/20230328235219.203-11-beaub@linux.microsoft.com

Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Beau Belgrave 2023-03-28 16:52:17 -07:00 committed by Steven Rostedt (Google)
parent 27dc2ae7c8
commit f9cce238ee
1 changed files with 10 additions and 10 deletions
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20
kernel/trace/trace_events_user.c
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@ -442,7 +442,7 @@ static bool user_event_enabler_dup(struct user_event_enabler *orig,
if (unlikely(test_bit(ENABLE_VAL_FREEING_BIT, ENABLE_BITOPS(orig))))
return true;
enabler = kzalloc(sizeof(*enabler), GFP_NOWAIT);
enabler = kzalloc(sizeof(*enabler), GFP_NOWAIT | __GFP_ACCOUNT);
if (!enabler)
return false;
@ -502,7 +502,7 @@ static struct user_event_mm *user_event_mm_create(struct task_struct *t)
struct user_event_mm *user_mm;
unsigned long flags;
user_mm = kzalloc(sizeof(*user_mm), GFP_KERNEL);
user_mm = kzalloc(sizeof(*user_mm), GFP_KERNEL_ACCOUNT);
if (!user_mm)
return NULL;
@ -662,7 +662,7 @@ static struct user_event_enabler
if (!user_mm)
return NULL;
enabler = kzalloc(sizeof(*enabler), GFP_KERNEL);
enabler = kzalloc(sizeof(*enabler), GFP_KERNEL_ACCOUNT);
if (!enabler)
goto out;
@ -870,7 +870,7 @@ static int user_event_add_field(struct user_event *user, const char *type,
struct ftrace_event_field *field;
int validator_flags = 0;
field = kmalloc(sizeof(*field), GFP_KERNEL);
field = kmalloc(sizeof(*field), GFP_KERNEL_ACCOUNT);
if (!field)
return -ENOMEM;
@ -889,7 +889,7 @@ add_validator:
if (strstr(type, "char") != NULL)
validator_flags |= VALIDATOR_ENSURE_NULL;
validator = kmalloc(sizeof(*validator), GFP_KERNEL);
validator = kmalloc(sizeof(*validator), GFP_KERNEL_ACCOUNT);
if (!validator) {
kfree(field);
@ -1175,7 +1175,7 @@ static int user_event_create_print_fmt(struct user_event *user)
len = user_event_set_print_fmt(user, NULL, 0);
print_fmt = kmalloc(len, GFP_KERNEL);
print_fmt = kmalloc(len, GFP_KERNEL_ACCOUNT);
if (!print_fmt)
return -ENOMEM;
@ -1508,7 +1508,7 @@ static int user_event_create(const char *raw_command)
raw_command += USER_EVENTS_PREFIX_LEN;
raw_command = skip_spaces(raw_command);
name = kstrdup(raw_command, GFP_KERNEL);
name = kstrdup(raw_command, GFP_KERNEL_ACCOUNT);
if (!name)
return -ENOMEM;
@ -1704,7 +1704,7 @@ static int user_event_parse(struct user_event_group *group, char *name,
return 0;
}
user = kzalloc(sizeof(*user), GFP_KERNEL);
user = kzalloc(sizeof(*user), GFP_KERNEL_ACCOUNT);
if (!user)
return -ENOMEM;
@ -1874,7 +1874,7 @@ static int user_events_open(struct inode *node, struct file *file)
if (!group)
return -ENOENT;
info = kzalloc(sizeof(*info), GFP_KERNEL);
info = kzalloc(sizeof(*info), GFP_KERNEL_ACCOUNT);
if (!info)
return -ENOMEM;
@ -1927,7 +1927,7 @@ static int user_events_ref_add(struct user_event_file_info *info,
size = struct_size(refs, events, count + 1);
new_refs = kzalloc(size, GFP_KERNEL);
new_refs = kzalloc(size, GFP_KERNEL_ACCOUNT);
if (!new_refs)
return -ENOMEM;