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Commit 20d09927 authored by Michael Ellerman's avatar Michael Ellerman
Browse files

selftests/powerpc: Allow the tm-syscall test to build with old headers 



When building against older kernel headers, currently the tm-syscall
test fails to build because PPC_FEATURE2_HTM_NOSC is not defined.

Tweak the test so that if PPC_FEATURE2_HTM_NOSC is not defined it still
builds, but prints a warning at run time and marks the test as skipped.

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 65b6ba63

tools/testing/selftests/powerpc/tm/tm-syscall.c

+12 −2
Original line number Diff line number Diff line
@@ -77,13 +77,23 @@ pid_t getppid_tm(bool suspend) 
	exit(-1);

}



static inline bool have_htm_nosc(void)

{

#ifdef PPC_FEATURE2_HTM_NOSC

	return ((long)get_auxv_entry(AT_HWCAP2) & PPC_FEATURE2_HTM_NOSC);

#else

	printf("PPC_FEATURE2_HTM_NOSC not defined, can't check AT_HWCAP2\n");

	return false;

#endif

}



int tm_syscall(void)

{

	unsigned count = 0;

	struct timeval end, now;



	SKIP_IF(!((long)get_auxv_entry(AT_HWCAP2)

		  & PPC_FEATURE2_HTM_NOSC));

	SKIP_IF(!have_htm_nosc());



	setbuf(stdout, NULL);



	printf("Testing transactional syscalls for %d seconds...\n", TEST_DURATION);