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4eaca0a887
preempt_schedule_context() is a tracing safe preemption point but it's
only used when CONFIG_CONTEXT_TRACKING=y. Other configs have tracing
recursion issues since commit:
b30f0e3ffe ("sched/preempt: Optimize preemption operations on __schedule() callers")
introduced function based preemp_count_*() ops.
Lets make it available on all configs and give it a more appropriate
name for its new position.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1433432349-1021-3-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
44 lines
1,003 B
C
44 lines
1,003 B
C
#include <linux/module.h>
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#include <asm/checksum.h>
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#include <asm/pgtable.h>
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#include <asm/desc.h>
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#include <asm/ftrace.h>
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#ifdef CONFIG_FUNCTION_TRACER
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/* mcount is defined in assembly */
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EXPORT_SYMBOL(mcount);
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#endif
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/*
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* Note, this is a prototype to get at the symbol for
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* the export, but dont use it from C code, it is used
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* by assembly code and is not using C calling convention!
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*/
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#ifndef CONFIG_X86_CMPXCHG64
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extern void cmpxchg8b_emu(void);
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EXPORT_SYMBOL(cmpxchg8b_emu);
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#endif
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/* Networking helper routines. */
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EXPORT_SYMBOL(csum_partial_copy_generic);
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EXPORT_SYMBOL(__get_user_1);
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EXPORT_SYMBOL(__get_user_2);
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EXPORT_SYMBOL(__get_user_4);
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EXPORT_SYMBOL(__get_user_8);
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EXPORT_SYMBOL(__put_user_1);
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EXPORT_SYMBOL(__put_user_2);
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EXPORT_SYMBOL(__put_user_4);
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EXPORT_SYMBOL(__put_user_8);
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EXPORT_SYMBOL(strstr);
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EXPORT_SYMBOL(csum_partial);
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EXPORT_SYMBOL(empty_zero_page);
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#ifdef CONFIG_PREEMPT
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EXPORT_SYMBOL(___preempt_schedule);
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EXPORT_SYMBOL(___preempt_schedule_notrace);
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#endif
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