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Let stack_create(9) take a malloc flags argument.

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Reviewed by:	cem
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12614
This commit is contained in:
Mark Johnston 2017-10-06 21:52:28 +00:00
parent c0b63519b0
commit f38c0c46c5
5 changed files with 12 additions and 9 deletions
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11
share/man/man9/stack.9
View File

@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd September 10, 2015
.Dd October 6, 2017
.Dt STACK 9
.Os
.Sh NAME
@ -42,7 +42,7 @@ In the kernel configuration file:
.Cd "options STACK"
.Pp
.Ft struct stack *
.Fn stack_create "void"
.Fn stack_create "int flags"
.Ft void
.Fn stack_destroy "struct stack *st"
.Ft int
@ -85,8 +85,11 @@ Each stack trace is described by a
.Vt "struct stack" .
Before a trace may be created or otherwise manipulated, storage for the trace
must be allocated with
.Fn stack_create ,
which may sleep.
.Fn stack_create .
The
.Ar flags
argument is passed to
.Xr malloc 9 .
Memory associated with a trace is freed by calling
.Fn stack_destroy .
.Pp

2
sys/kern/kern_proc.c
View File

@ -2547,7 +2547,7 @@ sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS)
return (error);
kkstp = malloc(sizeof(*kkstp), M_TEMP, M_WAITOK);
st = stack_create();
st = stack_create(M_WAITOK);
lwpidarray = NULL;
PROC_LOCK(p);

2
sys/kern/subr_sleepqueue.c
View File

@ -1163,7 +1163,7 @@ sleepq_sbuf_print_stacks(struct sbuf *sb, void *wchan, int queue,
M_TEMP, M_WAITOK);
for (stack_idx = 0; stack_idx < stacks_to_allocate;
stack_idx++)
st[stack_idx] = stack_create();
st[stack_idx] = stack_create(M_WAITOK);
/* Where we will store the td name, tid, etc. */
td_infos = malloc(sizeof(struct sbuf *) * stacks_to_allocate,

4
sys/kern/subr_stack.c
View File

@ -50,11 +50,11 @@ static int stack_symbol(vm_offset_t pc, char *namebuf, u_int buflen,
static int stack_symbol_ddb(vm_offset_t pc, const char **name, long *offset);
struct stack *
stack_create(void)
stack_create(int flags)
{
struct stack *st;
st = malloc(sizeof *st, M_STACK, M_WAITOK | M_ZERO);
st = malloc(sizeof(*st), M_STACK, flags | M_ZERO);
return (st);
}

2
sys/sys/stack.h
View File

@ -34,7 +34,7 @@
struct sbuf;
/* MI Routines. */
struct stack *stack_create(void);
struct stack *stack_create(int);
void stack_destroy(struct stack *);
int stack_put(struct stack *, vm_offset_t);
void stack_copy(const struct stack *, struct stack *);