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selftests/powerpc: Add wrapper for gettid

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The gettid() syscall wrapper was first introduced in
glibc 2.30. This adds a wrapper for use in distros
running older versions.

Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/8ca3b0eeda989707815d1cf337cc33f090408965.1595821792.git.sandipan@linux.ibm.com
This commit is contained in:
Sandipan Das 2020-07-27 09:30:39 +05:30 committed by Michael Ellerman
parent e3333c5994
commit 743f3544ff
1 changed files with 10 additions and 0 deletions
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10
tools/testing/selftests/powerpc/include/utils.h
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@ -42,6 +42,16 @@ int perf_event_enable(int fd);
int perf_event_disable(int fd);
int perf_event_reset(int fd);
#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 30)
#include <unistd.h>
#include <sys/syscall.h>
static inline pid_t gettid(void)
{
return syscall(SYS_gettid);
}
#endif
static inline bool have_hwcap(unsigned long ftr)
{
return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr;