mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 03:26:40 +07:00
47ad7b9bbe
This commit fixes a number of issues with the tile backtrace code. - Don't try to identify userspace shared object or executable paths if we are doing a backtrace from an interrupt; it's not legal, and also unlikely to be interesting. Likewise, don't try to do it for other address spaces, since d_path() assumes it is being called in "current" context. - Move "in_backtrace" from thread_struct to thread_info. This way we can access it even if our stack thread_info has been clobbered, which makes backtracing more robust. - Avoid using "current" directly when testing for is_sigreturn(). Since "current" may be corrupt, we're better off using kbt->task explicitly to look up the vdso_base for the current task. Conveniently, this simplifies the internal APIs (we only need one is_sigreturn() function now). - Avoid bogus "Odd fault" warning when pc/sp/ex1 are all zero, as is true for kernel threads above the last frame. - Hook into Tejun Heo's dump_stack() framework in lib/dump_stack.c. - Write last entry in save_stack_trace() as ULONG_MAX, not zero, since ftrace (at least) relies on finding that marker. - Implement save_stack_trace_regs() and save_strack_trace_user(), and set CONFIG_USER_STACKTRACE_SUPPORT. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* Exports from assembler code and from libtile-cc.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
/* arch/tile/lib/usercopy.S */
|
|
#include <linux/uaccess.h>
|
|
EXPORT_SYMBOL(clear_user_asm);
|
|
EXPORT_SYMBOL(flush_user_asm);
|
|
EXPORT_SYMBOL(finv_user_asm);
|
|
|
|
/* arch/tile/kernel/entry.S */
|
|
#include <linux/kernel.h>
|
|
#include <asm/processor.h>
|
|
EXPORT_SYMBOL(current_text_addr);
|
|
|
|
/* arch/tile/kernel/head.S */
|
|
EXPORT_SYMBOL(empty_zero_page);
|
|
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
|
/* arch/tile/kernel/mcount_64.S */
|
|
#include <asm/ftrace.h>
|
|
EXPORT_SYMBOL(__mcount);
|
|
#endif /* CONFIG_FUNCTION_TRACER */
|
|
|
|
/* arch/tile/lib/, various memcpy files */
|
|
EXPORT_SYMBOL(memcpy);
|
|
EXPORT_SYMBOL(__copy_to_user_inatomic);
|
|
EXPORT_SYMBOL(__copy_from_user_inatomic);
|
|
EXPORT_SYMBOL(__copy_from_user_zeroing);
|
|
#ifdef __tilegx__
|
|
EXPORT_SYMBOL(__copy_in_user_inatomic);
|
|
#endif
|
|
|
|
/* hypervisor glue */
|
|
#include <hv/hypervisor.h>
|
|
EXPORT_SYMBOL(hv_dev_open);
|
|
EXPORT_SYMBOL(hv_dev_pread);
|
|
EXPORT_SYMBOL(hv_dev_pwrite);
|
|
EXPORT_SYMBOL(hv_dev_preada);
|
|
EXPORT_SYMBOL(hv_dev_pwritea);
|
|
EXPORT_SYMBOL(hv_dev_poll);
|
|
EXPORT_SYMBOL(hv_dev_poll_cancel);
|
|
EXPORT_SYMBOL(hv_dev_close);
|
|
EXPORT_SYMBOL(hv_sysconf);
|
|
EXPORT_SYMBOL(hv_confstr);
|
|
EXPORT_SYMBOL(hv_get_rtc);
|
|
EXPORT_SYMBOL(hv_set_rtc);
|
|
|
|
/* libgcc.a */
|
|
uint32_t __udivsi3(uint32_t dividend, uint32_t divisor);
|
|
EXPORT_SYMBOL(__udivsi3);
|
|
int32_t __divsi3(int32_t dividend, int32_t divisor);
|
|
EXPORT_SYMBOL(__divsi3);
|
|
uint64_t __udivdi3(uint64_t dividend, uint64_t divisor);
|
|
EXPORT_SYMBOL(__udivdi3);
|
|
int64_t __divdi3(int64_t dividend, int64_t divisor);
|
|
EXPORT_SYMBOL(__divdi3);
|
|
uint32_t __umodsi3(uint32_t dividend, uint32_t divisor);
|
|
EXPORT_SYMBOL(__umodsi3);
|
|
int32_t __modsi3(int32_t dividend, int32_t divisor);
|
|
EXPORT_SYMBOL(__modsi3);
|
|
uint64_t __umoddi3(uint64_t dividend, uint64_t divisor);
|
|
EXPORT_SYMBOL(__umoddi3);
|
|
int64_t __moddi3(int64_t dividend, int64_t divisor);
|
|
EXPORT_SYMBOL(__moddi3);
|
|
#ifndef __tilegx__
|
|
int64_t __muldi3(int64_t, int64_t);
|
|
EXPORT_SYMBOL(__muldi3);
|
|
uint64_t __lshrdi3(uint64_t, unsigned int);
|
|
EXPORT_SYMBOL(__lshrdi3);
|
|
uint64_t __ashrdi3(uint64_t, unsigned int);
|
|
EXPORT_SYMBOL(__ashrdi3);
|
|
uint64_t __ashldi3(uint64_t, unsigned int);
|
|
EXPORT_SYMBOL(__ashldi3);
|
|
int __ffsdi2(uint64_t);
|
|
EXPORT_SYMBOL(__ffsdi2);
|
|
#endif
|