| Message ID | 20200229094159.25573-6-kjain@linux.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/perf: Add json file metric support for the hv_24x7 socket/chip level events | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (e3a1ab299346a9a415f334e91a78da7ea84aa5a2) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 18 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index b571285f6c14..226accd6218b 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -371,6 +371,18 @@ void post_mobility_fixup(void) /* Possibly switch to a new RFI flush type */ pseries_setup_rfi_flush(); + /* + * Incase lpar migrate from one system to another, system + * parameter details like chips per sockets and number of sockets + * might change. So, it needs to be re-initialized otherwise these + * values corresponds to previous system. + * Here, adding a call to read_sys_info_pseries() declared in + * platforms/pseries/pseries.h to re-init the physsockets and + * physchips value. + */ + if (IS_ENABLED(CONFIG_HV_PERF_CTRS) && IS_ENABLED(CONFIG_PPC_RTAS)) + read_sys_info_pseries(); + return; }
Function 'read_sys_info_pseries()' is added to get system parameter values like number of sockets and chips per socket. and it gets these details via rtas_call with token "PROCESSOR_MODULE_INFO". Incase lpar migrate from one system to another, system parameter details like chips per sockets or number of sockets might change. So, it needs to be re-initialized otherwise, these values corresponds to previous system values. This patch adds a call to 'read_sys_info_pseries()' from 'post-mobility_fixup()' to re-init the physsockets and physchips values. Signed-off-by: Kajol Jain <kjain@linux.ibm.com> --- arch/powerpc/platforms/pseries/mobility.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)