1 files changed, 0 insertions, 368 deletions
diff --git a/linux/printbuf.c b/linux/printbuf.c
deleted file mode 100644
index 5cf79d43..00000000
--- a/linux/printbuf.c
+++ /dev/null
@@ -1,368 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1+
-/* Copyright (C) 2022 Kent Overstreet */
-
-#include <linux/err.h>
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/printbuf.h>
-#include <linux/slab.h>
-#include <linux/string_helpers.h>
-
-static inline unsigned printbuf_linelen(struct printbuf *buf)
-{
-	return buf->pos - buf->last_newline;
-}
-
-int printbuf_make_room(struct printbuf *out, unsigned extra)
-{
-	unsigned new_size;
-	char *buf;
-
-	if (!out->heap_allocated)
-		return 0;
-
-	/* Reserved space for terminating nul: */
-	extra += 1;
-
-	if (out->pos + extra < out->size)
-		return 0;
-
-	new_size = roundup_pow_of_two(out->size + extra);
-
-	/*
-	 * Note: output buffer must be freeable with kfree(), it's not required
-	 * that the user use printbuf_exit().
-	 */
-	buf = krealloc(out->buf, new_size, !out->atomic ? GFP_KERNEL : GFP_NOWAIT);
-
-	if (!buf) {
-		out->allocation_failure = true;
-		return -ENOMEM;
-	}
-
-	out->buf	= buf;
-	out->size	= new_size;
-	return 0;
-}
-EXPORT_SYMBOL(printbuf_make_room);
-
-/**
- * printbuf_str - returns printbuf's buf as a C string, guaranteed to be null
- * terminated
- */
-const char *printbuf_str(const struct printbuf *buf)
-{
-	/*
-	 * If we've written to a printbuf then it's guaranteed to be a null
-	 * terminated string - but if we haven't, then we might not have
-	 * allocated a buffer at all:
-	 */
-	return buf->pos
-		? buf->buf
-		: "";
-}
-EXPORT_SYMBOL(printbuf_str);
-
-/**
- * printbuf_exit - exit a printbuf, freeing memory it owns and poisoning it
- * against accidental use.
- */
-void printbuf_exit(struct printbuf *buf)
-{
-	if (buf->heap_allocated) {
-		kfree(buf->buf);
-		buf->buf = ERR_PTR(-EINTR); /* poison value */
-	}
-}
-EXPORT_SYMBOL(printbuf_exit);
-
-void printbuf_tabstops_reset(struct printbuf *buf)
-{
-	buf->nr_tabstops = 0;
-}
-EXPORT_SYMBOL(printbuf_tabstops_reset);
-
-void printbuf_tabstop_pop(struct printbuf *buf)
-{
-	if (buf->nr_tabstops)
-		--buf->nr_tabstops;
-}
-EXPORT_SYMBOL(printbuf_tabstop_pop);
-
-/*
- * printbuf_tabstop_set - add a tabstop, n spaces from the previous tabstop
- *
- * @buf: printbuf to control
- * @spaces: number of spaces from previous tabpstop
- *
- * In the future this function may allocate memory if setting more than
- * PRINTBUF_INLINE_TABSTOPS or setting tabstops more than 255 spaces from start
- * of line.
- */
-int printbuf_tabstop_push(struct printbuf *buf, unsigned spaces)
-{
-	unsigned prev_tabstop = buf->nr_tabstops
-		? buf->_tabstops[buf->nr_tabstops - 1]
-		: 0;
-
-	if (WARN_ON(buf->nr_tabstops >= ARRAY_SIZE(buf->_tabstops)))
-		return -EINVAL;
-
-	buf->_tabstops[buf->nr_tabstops++] = prev_tabstop + spaces;
-	buf->has_indent_or_tabstops = true;
-	return 0;
-}
-EXPORT_SYMBOL(printbuf_tabstop_push);
-
-/**
- * printbuf_indent_add - add to the current indent level
- *
- * @buf: printbuf to control
- * @spaces: number of spaces to add to the current indent level
- *
- * Subsequent lines, and the current line if the output position is at the start
- * of the current line, will be indented by @spaces more spaces.
- */
-void printbuf_indent_add(struct printbuf *buf, unsigned spaces)
-{
-	if (WARN_ON_ONCE(buf->indent + spaces < buf->indent))
-		spaces = 0;
-
-	buf->indent += spaces;
-	prt_chars(buf, ' ', spaces);
-
-	buf->has_indent_or_tabstops = true;
-}
-EXPORT_SYMBOL(printbuf_indent_add);
-
-/**
- * printbuf_indent_sub - subtract from the current indent level
- *
- * @buf: printbuf to control
- * @spaces: number of spaces to subtract from the current indent level
- *
- * Subsequent lines, and the current line if the output position is at the start
- * of the current line, will be indented by @spaces less spaces.
- */
-void printbuf_indent_sub(struct printbuf *buf, unsigned spaces)
-{
-	if (WARN_ON_ONCE(spaces > buf->indent))
-		spaces = buf->indent;
-
-	if (buf->last_newline + buf->indent == buf->pos) {
-		buf->pos -= spaces;
-		printbuf_nul_terminate(buf);
-	}
-	buf->indent -= spaces;
-
-	if (!buf->indent && !buf->nr_tabstops)
-		buf->has_indent_or_tabstops = false;
-}
-EXPORT_SYMBOL(printbuf_indent_sub);
-
-void prt_newline(struct printbuf *buf)
-{
-	unsigned i;
-
-	printbuf_make_room(buf, 1 + buf->indent);
-
-	__prt_char(buf, '\n');
-
-	buf->last_newline	= buf->pos;
-
-	for (i = 0; i < buf->indent; i++)
-		__prt_char(buf, ' ');
-
-	printbuf_nul_terminate(buf);
-
-	buf->last_field		= buf->pos;
-	buf->cur_tabstop	= 0;
-}
-EXPORT_SYMBOL(prt_newline);
-
-/*
- * Returns spaces from start of line, if set, or 0 if unset:
- */
-static inline unsigned cur_tabstop(struct printbuf *buf)
-{
-	return buf->cur_tabstop < buf->nr_tabstops
-		? buf->_tabstops[buf->cur_tabstop]
-		: 0;
-}
-
-static void __prt_tab(struct printbuf *out)
-{
-	int spaces = max_t(int, 0, cur_tabstop(out) - printbuf_linelen(out));
-
-	prt_chars(out, ' ', spaces);
-
-	out->last_field = out->pos;
-	out->cur_tabstop++;
-}
-
-/**
- * prt_tab - Advance printbuf to the next tabstop
- *
- * @buf: printbuf to control
- *
- * Advance output to the next tabstop by printing spaces.
- */
-void prt_tab(struct printbuf *out)
-{
-	if (WARN_ON(!cur_tabstop(out)))
-		return;
-
-	__prt_tab(out);
-}
-EXPORT_SYMBOL(prt_tab);
-
-static void __prt_tab_rjust(struct printbuf *buf)
-{
-	unsigned move = buf->pos - buf->last_field;
-	int pad = (int) cur_tabstop(buf) - (int) printbuf_linelen(buf);
-
-	if (pad > 0) {
-		printbuf_make_room(buf, pad);
-
-		if (buf->last_field + pad < buf->size)
-			memmove(buf->buf + buf->last_field + pad,
-				buf->buf + buf->last_field,
-				min(move, buf->size - 1 - buf->last_field - pad));
-
-		if (buf->last_field < buf->size)
-			memset(buf->buf + buf->last_field, ' ',
-			       min((unsigned) pad, buf->size - buf->last_field));
-
-		buf->pos += pad;
-		printbuf_nul_terminate(buf);
-	}
-
-	buf->last_field = buf->pos;
-	buf->cur_tabstop++;
-}
-
-/**
- * prt_tab_rjust - Advance printbuf to the next tabstop, right justifying
- * previous output
- *
- * @buf: printbuf to control
- *
- * Advance output to the next tabstop by inserting spaces immediately after the
- * previous tabstop, right justifying previously outputted text.
- */
-void prt_tab_rjust(struct printbuf *buf)
-{
-	if (WARN_ON(!cur_tabstop(buf)))
-		return;
-
-	__prt_tab_rjust(buf);
-}
-EXPORT_SYMBOL(prt_tab_rjust);
-
-/**
- * prt_bytes_indented - Print an array of chars, handling embedded control characters
- *
- * @out: printbuf to output to
- * @str: string to print
- * @count: number of bytes to print
- *
- * The following contol characters are handled as so:
- *   \n: prt_newline	newline that obeys current indent level
- *   \t: prt_tab	advance to next tabstop
- *   \r: prt_tab_rjust	advance to next tabstop, with right justification
- */
-void prt_bytes_indented(struct printbuf *out, const char *str, unsigned count)
-{
-	const char *unprinted_start = str;
-	const char *end = str + count;
-
-	if (!out->has_indent_or_tabstops || out->suppress_indent_tabstop_handling) {
-		prt_bytes(out, str, count);
-		return;
-	}
-
-	while (str != end) {
-		switch (*str) {
-		case '\n':
-			prt_bytes(out, unprinted_start, str - unprinted_start);
-			unprinted_start = str + 1;
-			prt_newline(out);
-			break;
-		case '\t':
-			if (likely(cur_tabstop(out))) {
-				prt_bytes(out, unprinted_start, str - unprinted_start);
-				unprinted_start = str + 1;
-				__prt_tab(out);
-			}
-			break;
-		case '\r':
-			if (likely(cur_tabstop(out))) {
-				prt_bytes(out, unprinted_start, str - unprinted_start);
-				unprinted_start = str + 1;
-				__prt_tab_rjust(out);
-			}
-			break;
-		}
-
-		str++;
-	}
-
-	prt_bytes(out, unprinted_start, str - unprinted_start);
-}
-EXPORT_SYMBOL(prt_bytes_indented);
-
-/**
- * prt_human_readable_u64 - Print out a u64 in human readable units
- *
- * Units of 2^10 (default) or 10^3 are controlled via @buf->si_units
- */
-void prt_human_readable_u64(struct printbuf *buf, u64 v)
-{
-	printbuf_make_room(buf, 10);
-	buf->pos += string_get_size(v, 1, !buf->si_units,
-				    buf->buf + buf->pos,
-				    printbuf_remaining_size(buf));
-}
-EXPORT_SYMBOL(prt_human_readable_u64);
-
-/**
- * prt_human_readable_s64 - Print out a s64 in human readable units
- *
- * Units of 2^10 (default) or 10^3 are controlled via @buf->si_units
- */
-void prt_human_readable_s64(struct printbuf *buf, s64 v)
-{
-	if (v < 0)
-		prt_char(buf, '-');
-	prt_human_readable_u64(buf, abs(v));
-}
-EXPORT_SYMBOL(prt_human_readable_s64);
-
-/**
- * prt_units_u64 - Print out a u64 according to printbuf unit options
- *
- * Units are either raw (default), or human reabable units (controlled via
- * @buf->human_readable_units)
- */
-void prt_units_u64(struct printbuf *out, u64 v)
-{
-	if (out->human_readable_units)
-		prt_human_readable_u64(out, v);
-	else
-		prt_printf(out, "%llu", v);
-}
-EXPORT_SYMBOL(prt_units_u64);
-
-/**
- * prt_units_s64 - Print out a s64 according to printbuf unit options
- *
- * Units are either raw (default), or human reabable units (controlled via
- * @buf->human_readable_units)
- */
-void prt_units_s64(struct printbuf *out, s64 v)
-{
-	if (v < 0)
-		prt_char(out, '-');
-	prt_units_u64(out, abs(v));
-}
-EXPORT_SYMBOL(prt_units_s64);