diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c b/tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c index b099753b50e4..095195a25687 100644 --- a/tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c +++ b/tools/testing/selftests/powerpc/nx-gzip/gzfht_test.c @@ -60,6 +60,7 @@ #include <assert.h> #include <errno.h> #include <signal.h> +#include "utils.h" #include "nxu.h" #include "nx.h" @@ -70,6 +71,8 @@ FILE *nx_gzip_log; #define FNAME_MAX 1024 #define FEXT ".nx.gz" +#define SYSFS_MAX_REQ_BUF_PATH "devices/vio/ibm,compression-v1/nx_gzip_caps/req_max_processed_len" + /* * LZ counts returned in the user supplied nx_gzip_crb_cpb_t structure. */ @@ -244,6 +247,7 @@ int compress_file(int argc, char **argv, void *handle) struct nx_gzip_crb_cpb_t *cmdp; uint32_t pagelen = 65536; int fault_tries = NX_MAX_FAULTS; + char buf[32]; cmdp = (void *)(uintptr_t) aligned_alloc(sizeof(struct nx_gzip_crb_cpb_t), @@ -263,8 +267,17 @@ int compress_file(int argc, char **argv, void *handle) assert(NULL != (outbuf = (char *)malloc(outlen))); nxu_touch_pages(outbuf, outlen, pagelen, 1); - /* Compress piecemeal in smallish chunks */ - chunk = 1<<22; + /* + * On PowerVM, the hypervisor defines the maximum request buffer + * size is defined and this value is available via sysfs. + */ + if (!read_sysfs_file(SYSFS_MAX_REQ_BUF_PATH, buf, sizeof(buf))) { + chunk = atoi(buf); + } else { + /* sysfs entry is not available on PowerNV */ + /* Compress piecemeal in smallish chunks */ + chunk = 1<<22; + } /* Write the gzip header to the stream */ num_hdr_bytes = gzip_header_blank(outbuf); |