mirror of
https://github.com/torvalds/linux
synced 2024-09-20 02:57:25 +00:00
6727ad9e20
When doing an nmi backtrace of many cores, most of which are idle, the output is a little overwhelming and very uninformative. Suppress messages for cpus that are idling when they are interrupted and just emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN". We do this by grouping all the cpuidle code together into a new .cpuidle.text section, and then checking the address of the interrupted PC to see if it lies within that section. This commit suitably tags x86 and tile idle routines, and only adds in the minimal framework for other architectures. Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Tested-by: Petr Mladek <pmladek@suse.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
90 lines
1.7 KiB
ArmAsm
90 lines
1.7 KiB
ArmAsm
/*
|
|
* AVR32 linker script for the Linux kernel
|
|
*
|
|
* Copyright (C) 2004-2006 Atmel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#define LOAD_OFFSET 0x00000000
|
|
#include <asm-generic/vmlinux.lds.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
|
|
OUTPUT_ARCH(avr32)
|
|
ENTRY(_start)
|
|
|
|
/* Big endian */
|
|
jiffies = jiffies_64 + 4;
|
|
|
|
SECTIONS
|
|
{
|
|
. = CONFIG_ENTRY_ADDRESS;
|
|
.init : AT(ADDR(.init) - LOAD_OFFSET) {
|
|
_text = .;
|
|
__init_begin = .;
|
|
_sinittext = .;
|
|
*(.text.reset)
|
|
INIT_TEXT
|
|
/*
|
|
* .exit.text is discarded at runtime, not
|
|
* link time, to deal with references from
|
|
* __bug_table
|
|
*/
|
|
EXIT_TEXT
|
|
_einittext = .;
|
|
. = ALIGN(4);
|
|
__tagtable_begin = .;
|
|
*(.taglist.init)
|
|
__tagtable_end = .;
|
|
}
|
|
INIT_DATA_SECTION(16)
|
|
. = ALIGN(PAGE_SIZE);
|
|
__init_end = .;
|
|
|
|
.text : AT(ADDR(.text) - LOAD_OFFSET) {
|
|
_evba = .;
|
|
_stext = .;
|
|
*(.ex.text)
|
|
*(.irq.text)
|
|
KPROBES_TEXT
|
|
TEXT_TEXT
|
|
SCHED_TEXT
|
|
CPUIDLE_TEXT
|
|
LOCK_TEXT
|
|
*(.fixup)
|
|
*(.gnu.warning)
|
|
_etext = .;
|
|
} = 0xd703d703
|
|
|
|
EXCEPTION_TABLE(4)
|
|
RODATA
|
|
|
|
.data : AT(ADDR(.data) - LOAD_OFFSET) {
|
|
_data = .;
|
|
_sdata = .;
|
|
|
|
INIT_TASK_DATA(THREAD_SIZE)
|
|
PAGE_ALIGNED_DATA(PAGE_SIZE);
|
|
CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
|
|
*(.data.rel*)
|
|
DATA_DATA
|
|
CONSTRUCTORS
|
|
|
|
_edata = .;
|
|
}
|
|
|
|
BSS_SECTION(0, 8, 8)
|
|
_end = .;
|
|
|
|
DWARF_DEBUG
|
|
|
|
/* When something in the kernel is NOT compiled as a module, the module
|
|
* cleanup code and data are put into these segments. Both can then be
|
|
* thrown away, as cleanup code is never called unless it's a module.
|
|
*/
|
|
DISCARDS
|
|
}
|