/****************************************************************************** * * Copyright © International Business Machines Corp., 2009 * * 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; either version 2 of the License, or * (at your option) any later version. * * DESCRIPTION * Block on a futex and wait for timeout. * * AUTHOR * Darren Hart * * HISTORY * 2009-Nov-6: Initial version by Darren Hart * *****************************************************************************/ #include #include #include #include #include #include #include "futextest.h" #include "logging.h" static long timeout_ns = 100000; /* 100us default timeout */ void usage(char *prog) { printf("Usage: %s\n", prog); printf(" -c Use color\n"); printf(" -h Display this help message\n"); printf(" -t N Timeout in nanoseconds (default: 100,000)\n"); printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n", VQUIET, VCRITICAL, VINFO); } int main(int argc, char *argv[]) { futex_t f1 = FUTEX_INITIALIZER; struct timespec to; int res, ret = RET_PASS; int c; while ((c = getopt(argc, argv, "cht:v:")) != -1) { switch (c) { case 'c': log_color(1); break; case 'h': usage(basename(argv[0])); exit(0); case 't': timeout_ns = atoi(optarg); break; case 'v': log_verbosity(atoi(optarg)); break; default: usage(basename(argv[0])); exit(1); } } printf("%s: Block on a futex and wait for timeout\n", basename(argv[0])); printf("\tArguments: timeout=%ldns\n", timeout_ns); /* initialize timeout */ to.tv_sec = 0; to.tv_nsec = timeout_ns; info("Calling futex_wait on f1: %u @ %p\n", f1, &f1); res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG); if (!res || errno != ETIMEDOUT) { fail("futex_wait returned %d\n", ret < 0 ? errno : ret); ret = RET_FAIL; } print_result(ret); return ret; }
path: root/fs/befs/debug.c
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authorJiri Slaby <jslaby@suse.cz>2017-01-18 14:29:21 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-19 08:39:44 +0100
commitb5b46c4740aed1538544f0fa849c5b76c7823469 (patch)
tree125e7aced4835bad6f6a0c0d02d012f333caf922 /fs/befs/debug.c
parentfa19a769f82fb9a5ca000b83cacd13fcaeda51ac (diff)
objtool: Fix IRET's opcode
The IRET opcode is 0xcf according to the Intel manual and also to objdump of my vmlinux: 1ea8: 48 cf iretq Fix the opcode in arch_decode_instruction(). The previous value (0xc5) seems to correspond to LDS. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/befs/debug.c')