forked from Minki/linux
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>
93 lines
1.4 KiB
Plaintext
93 lines
1.4 KiB
Plaintext
/*
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* vmlinux.lds.S -- master linker script for m68knommu arch
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*
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* (C) Copyright 2002-2012, Greg Ungerer <gerg@snapgear.com>
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*
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* This linker script is equipped to build either ROM loaded or RAM
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* run kernels.
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*/
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#if defined(CONFIG_RAMKERNEL)
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#define KTEXT_ADDR CONFIG_KERNELBASE
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#endif
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#if defined(CONFIG_ROMKERNEL)
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#define KTEXT_ADDR CONFIG_ROMSTART
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#define KDATA_ADDR CONFIG_KERNELBASE
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#define LOAD_OFFSET KDATA_ADDR + (ADDR(.text) + SIZEOF(.text))
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#endif
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#include <asm/page.h>
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#include <asm/thread_info.h>
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#include <asm-generic/vmlinux.lds.h>
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OUTPUT_ARCH(m68k)
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ENTRY(_start)
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jiffies = jiffies_64 + 4;
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SECTIONS {
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#ifdef CONFIG_ROMVEC
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. = CONFIG_ROMVEC;
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.romvec : {
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__rom_start = .;
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_romvec = .;
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*(.romvec)
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*(.data..initvect)
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}
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#endif
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. = KTEXT_ADDR;
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_text = .;
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_stext = .;
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.text : {
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HEAD_TEXT
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TEXT_TEXT
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SCHED_TEXT
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CPUIDLE_TEXT
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LOCK_TEXT
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*(.fixup)
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. = ALIGN(16);
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}
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_etext = .;
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#ifdef KDATA_ADDR
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. = KDATA_ADDR;
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#endif
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_sdata = .;
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RO_DATA_SECTION(PAGE_SIZE)
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RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
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_edata = .;
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EXCEPTION_TABLE(16)
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NOTES
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. = ALIGN(PAGE_SIZE);
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__init_begin = .;
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INIT_TEXT_SECTION(PAGE_SIZE)
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INIT_DATA_SECTION(16)
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PERCPU_SECTION(16)
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.m68k_fixup : {
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__start_fixup = .;
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*(.m68k_fixup)
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__stop_fixup = .;
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}
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.init.data : {
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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}
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BSS_SECTION(0, 0, 0)
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_end = .;
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STABS_DEBUG
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.comment 0 : { *(.comment) }
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/* Sections to be discarded */
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DISCARDS
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}
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