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Get rid of unnecessary calls to kmem_alloc

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This commit is contained in:
jmcneill 2018-07-15 16:59:16 +00:00
parent 0b925243f2
commit e3ea5e4839
1 changed files with 14 additions and 19 deletions
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33
sys/dev/fdt/fdt_intr.c
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@ -1,4 +1,4 @@
/* $NetBSD: fdt_intr.c,v 1.16 2018/07/15 13:24:05 jmcneill Exp $ */
/* $NetBSD: fdt_intr.c,v 1.17 2018/07/15 16:59:16 jmcneill Exp $ */
/*-
* Copyright (c) 2015-2018 Jared McNeill <jmcneill@invisible.ca>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fdt_intr.c,v 1.16 2018/07/15 13:24:05 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: fdt_intr.c,v 1.17 2018/07/15 16:59:16 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -58,8 +58,8 @@ struct fdtbus_interrupt_cookie {
static LIST_HEAD(, fdtbus_interrupt_cookie) fdtbus_interrupt_cookies =
LIST_HEAD_INITIALIZER(fdtbus_interrupt_cookies);
static u_int * get_specifier_by_index(int, int, int *);
static u_int * get_specifier_from_map(int, const u_int *, int *);
static const u_int * get_specifier_by_index(int, int, int *);
static const u_int * get_specifier_from_map(int, const u_int *, int *);
/*
* Find the interrupt controller for a given node. This function will either
@ -136,7 +136,7 @@ fdtbus_intr_establish(int phandle, u_int index, int ipl, int flags,
{
struct fdtbus_interrupt_controller *ic;
struct fdtbus_interrupt_cookie *c = NULL;
u_int *specifier;
const u_int *specifier;
int ihandle;
void *ih;
@ -148,7 +148,7 @@ fdtbus_intr_establish(int phandle, u_int index, int ipl, int flags,
if (ic == NULL)
return NULL;
ih = ic->ic_funcs->establish(ic->ic_dev, specifier,
ih = ic->ic_funcs->establish(ic->ic_dev, __UNCONST(specifier),
ipl, flags, func, arg);
if (ih != NULL) {
c = kmem_alloc(sizeof(*c), KM_SLEEP);
@ -185,7 +185,7 @@ bool
fdtbus_intr_str(int phandle, u_int index, char *buf, size_t buflen)
{
struct fdtbus_interrupt_controller *ic;
u_int *specifier;
const u_int *specifier;
int ihandle;
specifier = get_specifier_by_index(phandle, index, &ihandle);
@ -194,7 +194,7 @@ fdtbus_intr_str(int phandle, u_int index, char *buf, size_t buflen)
if (ic == NULL)
return false;
return ic->ic_funcs->intrstr(ic->ic_dev, specifier, buf, buflen);
return ic->ic_funcs->intrstr(ic->ic_dev, __UNCONST(specifier), buf, buflen);
}
static int
@ -221,10 +221,10 @@ find_interrupt_cells(int phandle)
return 0;
}
static u_int *
static const u_int *
get_specifier_from_map(int phandle, const u_int *interrupt_spec, int *piphandle)
{
u_int *result = NULL;
const u_int *result = NULL;
int len, resid;
const u_int *data = fdtbus_get_prop(phandle, "interrupt-map", &len);
@ -267,15 +267,14 @@ get_specifier_from_map(int phandle, const u_int *interrupt_spec, int *piphandle)
#endif
if (memcmp(&p[cis_off], interrupt_spec, cis_cells * 4) == 0) {
const int slen = pus_cells + pis_cells;
#ifdef FDT_INTR_DEBUG
const int slen = pus_cells + pis_cells;
printf(" intr map match iparent %08x slen %d:", iparent, slen);
for (int i = 0; i < slen; i++)
printf(" %08x", p[pus_off + i]);
printf("\n");
#endif
result = kmem_alloc(slen, KM_SLEEP);
memcpy(result, &p[pus_off], slen * 4);
result = &p[pus_off];
*piphandle = iparent;
goto done;
}
@ -291,11 +290,10 @@ done:
return result;
}
static u_int *
static const u_int *
get_specifier_by_index(int phandle, int pindex, int *piphandle)
{
const u_int *node_specifier;
u_int *specifier;
int interrupt_parent, interrupt_cells, len;
interrupt_parent = fdtbus_get_interrupt_parent(phandle);
@ -320,10 +318,7 @@ get_specifier_by_index(int phandle, int pindex, int *piphandle)
if (of_hasprop(interrupt_parent, "interrupt-map"))
return get_specifier_from_map(interrupt_parent, node_specifier, piphandle);
specifier = kmem_alloc(interrupt_cells * sizeof(u_int), KM_SLEEP);
memcpy(specifier, node_specifier, interrupt_cells * 4);
*piphandle = interrupt_parent;
return specifier;
return node_specifier;
}