diff options
Diffstat (limited to 'Documentation/admin-guide/kdump')
| -rw-r--r-- | Documentation/admin-guide/kdump/gdbmacros.txt | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/admin-guide/kdump/gdbmacros.txt b/Documentation/admin-guide/kdump/gdbmacros.txt index 7adece30237e..8f533b751c46 100644 --- a/Documentation/admin-guide/kdump/gdbmacros.txt +++ b/Documentation/admin-guide/kdump/gdbmacros.txt @@ -295,9 +295,12 @@ document dump_record end define dmesg - set var $desc_committed = 1UL << ((sizeof(long) * 8) - 1) - set var $flags_mask = 3UL << ((sizeof(long) * 8) - 2) - set var $id_mask = ~$flags_mask + # definitions from kernel/printk/printk_ringbuffer.h + set var $desc_committed = 1 + set var $desc_sv_bits = sizeof(long) * 8 + set var $desc_flags_shift = $desc_sv_bits - 2 + set var $desc_flags_mask = 3 << $desc_flags_shift + set var $id_mask = ~$desc_flags_mask set var $desc_count = 1U << prb->desc_ring.count_bits set var $prev_flags = 0 @@ -309,7 +312,8 @@ define dmesg set var $desc = &prb->desc_ring.descs[$id % $desc_count] # skip non-committed record - if (($desc->state_var.counter & $flags_mask) == $desc_committed) + set var $state = 3 & ($desc->state_var.counter >> $desc_flags_shift) + if ($state == $desc_committed) dump_record $desc $prev_flags set var $prev_flags = $desc->info.flags end |