ptov offset:cpuspec can be used to translate per-cpu offset to kernel virtual address. This patch will hide data of offline cpu.
The original output is like below: <cut> crash> ptov bfa0:a PER-CPU OFFSET: bfa0 CPU VIRTUAL [0] ffff88003fc0bfa0 [1] ffff88003fc8bfa0 [2] ffff88003fd0bfa0 [3] ffff88003fd8bfa0 <cut> With data of offline cpu(cpu #2) hiden, the output is like below: <cut> crash> ptov bfa0:a PER-CPU OFFSET: bfa0 CPU VIRTUAL [0] ffff88003fc0bfa0 [1] ffff88003fc8bfa0 [2] <OFFLINE> [3] ffff88003fd8bfa0 <cut> Signed-off-by: Qiao Nuohan <[email protected]> --- memory.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/memory.c b/memory.c index 518c917..fbbd01d 100755 --- a/memory.c +++ b/memory.c @@ -3192,9 +3192,13 @@ cmd_ptov(void) continue; vaddr = paddr + kt->__per_cpu_offset[c]; sprintf(buf1, "[%d]", c); - fprintf(fp, " %s%lx\n", - mkstring(buf2, len, LJUST, buf1), - vaddr); + + fprintf(fp, " %s", + mkstring(buf2, len, LJUST, buf1)); + if (hide_offline_cpu(c)) + fprintf(fp, "<OFFLINE>\n"); + else + fprintf(fp, "%lx\n", vaddr); } FREEBUF(cpus); } else { -- 1.8.5.3 -- Crash-utility mailing list [email protected] https://www.redhat.com/mailman/listinfo/crash-utility
