mirror of
https://github.com/torvalds/linux
synced 2024-09-29 07:50:45 +00:00
0707ad30d1
This commit is primarily changes caused by reviewing "sparse" and "checkpatch" output on our sources, so is somewhat noisy, since things like "printk() -> pr_err()" (or whatever) throughout the codebase tend to get tedious to read. Rather than trying to tease apart precisely which things changed due to which type of code review, this commit includes various cleanups in the code: - sparse: Add declarations in headers for globals. - sparse: Fix __user annotations. - sparse: Using gfp_t consistently instead of int. - sparse: removing functions not actually used. - checkpatch: Clean up printk() warnings by using pr_info(), etc.; also avoid partial-line printks except in bootup code. - checkpatch: Use exposed structs rather than typedefs. - checkpatch: Change some C99 comments to C89 comments. In addition, a couple of minor other changes are rolled in to this commit: - Add support for a "raise" instruction to cause SIGFPE, etc., to be raised. - Remove some compat code that is unnecessary when we fully eliminate some of the deprecated syscalls from the generic syscall ABI. - Update the tile_defconfig to reflect current config contents. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#include <linux/console.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <asm/setup.h>
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#include <hv/hypervisor.h>
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static void early_hv_write(struct console *con, const char *s, unsigned n)
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{
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hv_console_write((HV_VirtAddr) s, n);
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}
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static struct console early_hv_console = {
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.name = "earlyhv",
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.write = early_hv_write,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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};
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/* Direct interface for emergencies */
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static struct console *early_console = &early_hv_console;
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static int early_console_initialized;
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static int early_console_complete;
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static void early_vprintk(const char *fmt, va_list ap)
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{
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char buf[512];
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int n = vscnprintf(buf, sizeof(buf), fmt, ap);
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early_console->write(early_console, buf, n);
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}
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void early_printk(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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early_vprintk(fmt, ap);
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va_end(ap);
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}
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void early_panic(const char *fmt, ...)
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{
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va_list ap;
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raw_local_irq_disable_all();
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va_start(ap, fmt);
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early_printk("Kernel panic - not syncing: ");
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early_vprintk(fmt, ap);
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early_console->write(early_console, "\n", 1);
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va_end(ap);
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dump_stack();
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hv_halt();
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}
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static int __initdata keep_early;
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static int __init setup_early_printk(char *str)
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{
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if (early_console_initialized)
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return 1;
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if (str != NULL && strncmp(str, "keep", 4) == 0)
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keep_early = 1;
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early_console = &early_hv_console;
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early_console_initialized = 1;
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register_console(early_console);
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return 0;
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}
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void __init disable_early_printk(void)
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{
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early_console_complete = 1;
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if (!early_console_initialized || !early_console)
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return;
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if (!keep_early) {
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early_printk("disabling early console\n");
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unregister_console(early_console);
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early_console_initialized = 0;
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} else {
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early_printk("keeping early console\n");
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}
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}
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void warn_early_printk(void)
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{
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if (early_console_complete || early_console_initialized)
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return;
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early_printk("\
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Machine shutting down before console output is fully initialized.\n\
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You may wish to reboot and add the option 'earlyprintk' to your\n\
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boot command line to see any diagnostic early console output.\n\
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");
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}
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early_param("earlyprintk", setup_early_printk);
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