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| author | Sandipan Das <sandipan@linux.ibm.com> | 2020-06-04 15:56:09 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-06-30 07:37:51 +0300 |
| commit | c405b738daf9d8e8a5aedfeb6be851681e65e54b (patch) | |
| tree | 7b11e0c1a8b834a93bc1ca900d881f3852f79a78 /tools/testing/selftests/powerpc/utils.c | |
| parent | 828ca4320d130bbe1d12866152600c49ff6a9f79 (diff) | |
| download | linux-c405b738daf9d8e8a5aedfeb6be851681e65e54b.tar.xz | |
selftests/powerpc: Move Hash MMU check to utilities
This moves a function to test if the MMU is in Hash mode
under the generic test utilities.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200604125610.649668-3-sandipan@linux.ibm.com
Diffstat (limited to 'tools/testing/selftests/powerpc/utils.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/utils.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c index 5ee0e98c4896..933678f1ed0a 100644 --- a/tools/testing/selftests/powerpc/utils.c +++ b/tools/testing/selftests/powerpc/utils.c @@ -293,3 +293,31 @@ void set_dscr(unsigned long val) asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR)); } + +int using_hash_mmu(bool *using_hash) +{ + char line[128]; + FILE *f; + int rc; + + f = fopen("/proc/cpuinfo", "r"); + FAIL_IF(!f); + + rc = 0; + while (fgets(line, sizeof(line), f) != NULL) { + if (strcmp(line, "MMU : Hash\n") == 0) { + *using_hash = true; + goto out; + } + + if (strcmp(line, "MMU : Radix\n") == 0) { + *using_hash = false; + goto out; + } + } + + rc = -1; +out: + fclose(f); + return rc; +} |