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Revision d92da1fbb72490f999b7d0e809d13d0d52dc78ac authored by Linus Torvalds on 21 March 2019, 18:48:06 UTC, committed by Linus Torvalds on 21 March 2019, 18:48:06 UTC 
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
 
Pull arm64 fixes from Catalin Marinas:
 "Mostly fixes apart from the kprobe blacklist checking which was
  deferred because of conflicting with a fix merged after I pinned the
  arm64 for-next/core branch (f2b3d8566d81 "arm64: kprobe: Always
  blacklist the KVM world-switch code").

  Summary:

   - Update the kprobe blacklist checking for arm64. This was supposed
     to be queued during the merging window but, due to conflicts, it
     was deferred post -rc1

   - Extend the Fujitsu erratum 010001 workaround to A64FX v1r0

   - Whitelist HiSilicon Taishan v110 CPUs as not susceptible to
     Meltdown

   - Export save_stack_trace_regs()

   - Remove obsolete selection of MULTI_IRQ_HANDLER"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: remove obsolete selection of MULTI_IRQ_HANDLER
  arm64: kpti: Whitelist HiSilicon Taishan v110 CPUs
  arm64: Add MIDR encoding for HiSilicon Taishan CPUs
  arm64/stacktrace: Export save_stack_trace_regs()
  arm64: apply workaround on A64FX v1r0
  arm64: kprobes: Use arch_populate_kprobe_blacklist()
  arm64: kprobes: Move exception_text check in blacklist
  arm64: kprobes: Remove unneeded RODATA check
  arm64: kprobes: Move extable address check into arch_prepare_kprobe()
2 parent s fb549c5 + e5a5af7
Raw File
trace-seq.h 
// SPDX-License-Identifier: LGPL-2.1
/*
 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
 *
 */

#ifndef _TRACE_SEQ_H
#define _TRACE_SEQ_H

#include <stdarg.h>
#include <stdio.h>

/* ----------------------- trace_seq ----------------------- */

#ifndef TRACE_SEQ_BUF_SIZE
#define TRACE_SEQ_BUF_SIZE 4096
#endif

enum trace_seq_fail {
	TRACE_SEQ__GOOD,
	TRACE_SEQ__BUFFER_POISONED,
	TRACE_SEQ__MEM_ALLOC_FAILED,
};

/*
 * Trace sequences are used to allow a function to call several other functions
 * to create a string of data to use (up to a max of PAGE_SIZE).
 */

struct trace_seq {
	char			*buffer;
	unsigned int		buffer_size;
	unsigned int		len;
	unsigned int		readpos;
	enum trace_seq_fail	state;
};

void trace_seq_init(struct trace_seq *s);
void trace_seq_reset(struct trace_seq *s);
void trace_seq_destroy(struct trace_seq *s);

extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
	__attribute__ ((format (printf, 2, 3)));
extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
	__attribute__ ((format (printf, 2, 0)));

extern int trace_seq_puts(struct trace_seq *s, const char *str);
extern int trace_seq_putc(struct trace_seq *s, unsigned char c);

extern void trace_seq_terminate(struct trace_seq *s);

extern int trace_seq_do_fprintf(struct trace_seq *s, FILE *fp);
extern int trace_seq_do_printf(struct trace_seq *s);

#endif /* _TRACE_SEQ_H */
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