lib/eal/ppc fix compilation for musl
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Commit Message
musl lacks __ppc_get_timebase() but has __builtin_ppc_get_timebase()
the __ppc_get_timebase_freq() is taken from:
https://git.alpinelinux.org/aports/commit/?id=06b03f70fb94972286c0c9f6278df89e53903833
Signed-off-by: Duncan Bellamy <dunk@denkimushi.com>
---
lib/eal/ppc/include/rte_cycles.h | 6 ++++++
lib/eal/ppc/rte_cycles.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 38 insertions(+)
@@ -10,7 +10,9 @@
extern "C" {
#endif
+#ifdef __GLIBC__
#include <sys/platform/ppc.h>
+#endif
#include "generic/rte_cycles.h"
@@ -26,7 +28,11 @@ 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
@@ -2,12 +2,44 @@
* Copyright (C) IBM Corporation 2019.
*/
+#ifdef __GLIBC__
#include <sys/platform/ppc.h>
+#else
+#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();
+#else
+ static uint64_t base;
+ if (!base) {
+ FILE *f = fopen("/proc/cpuinfo", "rb");
+ if (f) {
+ ssize_t nr;
+ /* virtually always big enough to hold the line */
+ char buf[512];
+ while (fgets(buf, sizeof(buf), f)) {
+ char *ret = strstr(buf, "timebase");
+ if (!ret) {
+ continue;
+ }
+ ret += sizeof("timebase") - 1;
+ ret = strchr(ret, ':');
+ if (!ret) {
+ continue;
+ }
+ base = strtoul(ret + 1, 0, 10);
+ break;
+ }
+ fclose(f);
+ }
+ }
+ return base;;
+#endif
}