0615dd2aa1
musl lacks __ppc_get_timebase() but has __builtin_ppc_get_timebase() Signed-off-by: Duncan Bellamy <dunk@denkimushi.com> Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>
53 lines
852 B
C
53 lines
852 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) IBM Corporation 2019.
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*/
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#include <features.h>
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#ifdef __GLIBC__
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#include <sys/platform/ppc.h>
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#elif RTE_EXEC_ENV_LINUX
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#include <string.h>
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#include <stdio.h>
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#endif
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#include "eal_private.h"
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uint64_t
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get_tsc_freq_arch(void)
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{
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#ifdef __GLIBC__
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return __ppc_get_timebase_freq();
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#elif RTE_EXEC_ENV_LINUX
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static unsigned long base;
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char buf[512];
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ssize_t nr;
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FILE *f;
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if (base != 0)
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goto out;
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f = fopen("/proc/cpuinfo", "rb");
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if (f == NULL)
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goto out;
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while (fgets(buf, sizeof(buf), f) != NULL) {
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char *ret = strstr(buf, "timebase");
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if (ret == NULL)
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continue;
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ret += sizeof("timebase") - 1;
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ret = strchr(ret, ':');
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if (ret == NULL)
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continue;
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base = strtoul(ret + 1, NULL, 10);
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break;
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}
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fclose(f);
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out:
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return (uint64_t) base;
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#else
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return 0;
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#endif
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}
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