diff options
Diffstat (limited to 'arch/s390/kernel/perf_cpum_sf.c')
| -rw-r--r-- | arch/s390/kernel/perf_cpum_sf.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 0292d68e7dde..cb198d4a6dca 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -2,7 +2,7 @@ /* * Performance event support for the System z CPU-measurement Sampling Facility * - * Copyright IBM Corp. 2013 + * Copyright IBM Corp. 2013, 2018 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> */ #define KMSG_COMPONENT "cpum_sf" @@ -1587,6 +1587,17 @@ static void aux_buffer_free(void *data) "%lu SDBTs\n", num_sdbt); } +static void aux_sdb_init(unsigned long sdb) +{ + struct hws_trailer_entry *te; + + te = (struct hws_trailer_entry *)trailer_entry_ptr(sdb); + + /* Save clock base */ + te->clock_base = 1; + memcpy(&te->progusage2, &tod_clock_base[1], 8); +} + /* * aux_buffer_setup() - Setup AUX buffer for diagnostic mode sampling * @cpu: On which to allocate, -1 means current @@ -1666,6 +1677,7 @@ static void *aux_buffer_setup(int cpu, void **pages, int nr_pages, /* Tail is the entry in a SDBT */ *tail = (unsigned long)pages[i]; aux->sdb_index[i] = (unsigned long)pages[i]; + aux_sdb_init((unsigned long)pages[i]); } sfb->num_sdb = nr_pages; |