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tty/vt: consolemap: rename and document struct uni_pagedir

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struct uni_pagedir contains 32 unicode page directories, so the name of
the structure is a bit misleading. Rename the structure to uni_pagedict,
so it looks like this:
struct uni_pagedict
  -> 32 page dirs
     -> 32 rows
       -> 64 glyphs

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220607104946.18710-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2022-06-07 12:49:12 +02:00 committed by Greg Kroah-Hartman
parent 17945d317a
commit 4173f018aa
3 changed files with 33 additions and 24 deletions
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47
drivers/tty/vt/consolemap.c
View file

@ -186,17 +186,26 @@ static unsigned short translations[][256] = {
static int inv_translate[MAX_NR_CONSOLES];
struct uni_pagedir {
u16 **uni_pgdir[32];
/**
* struct uni_pagedict -- unicode directory
*
* @uni_pgdir: 32*32*64 table with glyphs
* @refcount: reference count of this structure
* @sum: checksum
* @inverse_translations: best-effort inverse mapping
* @inverse_trans_unicode: best-effort inverse mapping to unicode
*/
struct uni_pagedict {
u16 **uni_pgdir[32];
unsigned long refcount;
unsigned long sum;
unsigned char *inverse_translations[4];
u16 *inverse_trans_unicode;
};
static struct uni_pagedir *dflt;
static struct uni_pagedict *dflt;
static void set_inverse_transl(struct vc_data *conp, struct uni_pagedir *p, int i)
static void set_inverse_transl(struct vc_data *conp, struct uni_pagedict *p, int i)
{
int j, glyph;
unsigned short *t = translations[i];
@ -221,7 +230,7 @@ static void set_inverse_transl(struct vc_data *conp, struct uni_pagedir *p, int
}
static void set_inverse_trans_unicode(struct vc_data *conp,
struct uni_pagedir *p)
struct uni_pagedict *p)
{
int i, j, k, glyph;
u16 **p1, *p2;
@ -270,7 +279,7 @@ unsigned short *set_translate(int m, struct vc_data *vc)
*/
u16 inverse_translate(const struct vc_data *conp, int glyph, int use_unicode)
{
struct uni_pagedir *p;
struct uni_pagedict *p;
int m;
if (glyph < 0 || glyph >= MAX_GLYPH)
return 0;
@ -297,7 +306,7 @@ EXPORT_SYMBOL_GPL(inverse_translate);
static void update_user_maps(void)
{
int i;
struct uni_pagedir *p, *q = NULL;
struct uni_pagedict *p, *q = NULL;
for (i = 0; i < MAX_NR_CONSOLES; i++) {
if (!vc_cons_allocated(i))
@ -393,7 +402,7 @@ int con_get_trans_new(ushort __user * arg)
extern u8 dfont_unicount[]; /* Defined in console_defmap.c */
extern u16 dfont_unitable[];
static void con_release_unimap(struct uni_pagedir *p)
static void con_release_unimap(struct uni_pagedict *p)
{
u16 **p1;
int i, j;
@ -419,7 +428,7 @@ static void con_release_unimap(struct uni_pagedir *p)
/* Caller must hold the console lock */
void con_free_unimap(struct vc_data *vc)
{
struct uni_pagedir *p;
struct uni_pagedict *p;
p = *vc->vc_uni_pagedir_loc;
if (!p)
@ -431,10 +440,10 @@ void con_free_unimap(struct vc_data *vc)
kfree(p);
}
static int con_unify_unimap(struct vc_data *conp, struct uni_pagedir *p)
static int con_unify_unimap(struct vc_data *conp, struct uni_pagedict *p)
{
int i, j, k;
struct uni_pagedir *q;
struct uni_pagedict *q;
for (i = 0; i < MAX_NR_CONSOLES; i++) {
if (!vc_cons_allocated(i))
@ -472,7 +481,7 @@ static int con_unify_unimap(struct vc_data *conp, struct uni_pagedir *p)
}
static int
con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
con_insert_unipair(struct uni_pagedict *p, u_short unicode, u_short fontpos)
{
int i, n;
u16 **p1, *p2;
@ -503,7 +512,7 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
/* Caller must hold the lock */
static int con_do_clear_unimap(struct vc_data *vc)
{
struct uni_pagedir *p, *q;
struct uni_pagedict *p, *q;
p = *vc->vc_uni_pagedir_loc;
if (!p || --p->refcount) {
@ -536,7 +545,7 @@ int con_clear_unimap(struct vc_data *vc)
int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
{
int err = 0, err1, i;
struct uni_pagedir *p, *q;
struct uni_pagedict *p, *q;
struct unipair *unilist, *plist;
if (!ct)
@ -569,7 +578,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
/*
* Since refcount was > 1, con_clear_unimap() allocated a
* a new uni_pagedir for this vc. Re: p != q
* a new uni_pagedict for this vc. Re: p != q
*/
q = *vc->vc_uni_pagedir_loc;
@ -660,7 +669,7 @@ int con_set_default_unimap(struct vc_data *vc)
{
int i, j, err = 0, err1;
u16 *q;
struct uni_pagedir *p;
struct uni_pagedict *p;
if (dflt) {
p = *vc->vc_uni_pagedir_loc;
@ -714,7 +723,7 @@ EXPORT_SYMBOL(con_set_default_unimap);
*/
int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
{
struct uni_pagedir *q;
struct uni_pagedict *q;
if (!*src_vc->vc_uni_pagedir_loc)
return -EINVAL;
@ -739,7 +748,7 @@ int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct uni
int i, j, k, ret = 0;
ushort ect;
u16 **p1, *p2;
struct uni_pagedir *p;
struct uni_pagedict *p;
struct unipair *unilist;
unilist = kvmalloc_array(ct, sizeof(struct unipair), GFP_KERNEL);
@ -810,7 +819,7 @@ conv_uni_to_pc(struct vc_data *conp, long ucs)
{
int h;
u16 **p1, *p2;
struct uni_pagedir *p;
struct uni_pagedict *p;
/* Only 16-bit codes supported at this time */
if (ucs > 0xffff)

4
drivers/video/console/vgacon.c
View file

@ -75,7 +75,7 @@ static void vgacon_scrolldelta(struct vc_data *c, int lines);
static int vgacon_set_origin(struct vc_data *c);
static void vgacon_save_screen(struct vc_data *c);
static void vgacon_invert_region(struct vc_data *c, u16 * p, int count);
static struct uni_pagedir *vgacon_uni_pagedir;
static struct uni_pagedict *vgacon_uni_pagedir;
static int vgacon_refcount;
/* Description of the hardware situation */
@ -342,7 +342,7 @@ static const char *vgacon_startup(void)
static void vgacon_init(struct vc_data *c, int init)
{
struct uni_pagedir *p;
struct uni_pagedict *p;
/*
* We cannot be loaded as a module, therefore init will be 1

6
include/linux/console_struct.h
View file

@ -17,7 +17,7 @@
#include <linux/vt.h>
#include <linux/workqueue.h>
struct uni_pagedir;
struct uni_pagedict;
struct uni_screen;
#define NPAR 16
@ -157,8 +157,8 @@ struct vc_data {
unsigned int vc_bell_duration; /* Console bell duration */
unsigned short vc_cur_blink_ms; /* Cursor blink duration */
struct vc_data **vc_display_fg; /* [!] Ptr to var holding fg console for this display */
struct uni_pagedir *vc_uni_pagedir;
struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
struct uni_pagedict *vc_uni_pagedir;
struct uni_pagedict **vc_uni_pagedir_loc; /* [!] Location of uni_pagedict variable for this console */
struct uni_screen *vc_uni_screen; /* unicode screen content */
/* additional information is in vt_kern.h */
};