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eal/ppc: fix compilation for musl

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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>
This commit is contained in:
Duncan Bellamy 2022-05-14 08:14:35 +01:00 committed by David Marchand
parent 77dd857d30
commit 0615dd2aa1
2 changed files with 46 additions and 0 deletions
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7
lib/eal/ppc/include/rte_cycles.h
View File

@ -10,7 +10,10 @@
extern "C" {
#endif
#include <features.h>
#ifdef __GLIBC__
#include <sys/platform/ppc.h>
#endif
#include "generic/rte_cycles.h"
@ -26,7 +29,11 @@ extern "C" {
static inline uint64_t
rte_rdtsc(void)
{
#ifdef __GLIBC__
return __ppc_get_timebase();
#else
return __builtin_ppc_get_timebase();
#endif
}
static inline uint64_t

39
lib/eal/ppc/rte_cycles.c
View File

@ -2,12 +2,51 @@
* Copyright (C) IBM Corporation 2019.
*/
#include <features.h>
#ifdef __GLIBC__
#include <sys/platform/ppc.h>
#elif RTE_EXEC_ENV_LINUX
#include <string.h>
#include <stdio.h>
#endif
#include "eal_private.h"
uint64_t
get_tsc_freq_arch(void)
{
#ifdef __GLIBC__
return __ppc_get_timebase_freq();
#elif RTE_EXEC_ENV_LINUX
static unsigned long base;
char buf[512];
ssize_t nr;
FILE *f;
if (base != 0)
goto out;
f = fopen("/proc/cpuinfo", "rb");
if (f == NULL)
goto out;
while (fgets(buf, sizeof(buf), f) != NULL) {
char *ret = strstr(buf, "timebase");
if (ret == NULL)
continue;
ret += sizeof("timebase") - 1;
ret = strchr(ret, ':');
if (ret == NULL)
continue;
base = strtoul(ret + 1, NULL, 10);
break;
}
fclose(f);
out:
return (uint64_t) base;
#else
return 0;
#endif
}