[Crash-utility] [PATCH] Fix for "timer -r -C" option to display all the per-CPU clocks

Currently, the hrtimer_max_clock_bases is hard-coded to 3, which makes that crash only prints three clocks, and the rest of clocks are not displayed. Without the patch: crash> timer -r -C 11 CPU: 11 HRTIMER_CPU_BASE: ffff9a775f95ee00 CLOCK: 0 HRTIMER_CLOCK_BASE: ffff9a775f95ee80 [ktime_get] (empty) CLOCK: 1 HRTIMER_CLOCK_BASE: ffff9a775f95ef00 [ktime_get_real] (empty) CLOCK: 2 HRTIMER_CLOCK_BASE: ffff9a775f95ef80 [ktime_get_boottime] (empty) With the patch: crash> timer -r -C 11 CPU: 11 HRTIMER_CPU_BASE: ffff9a775f95ee00 CLOCK: 0 HRTIMER_CLOCK_BASE: ffff9a775f95ee80 [ktime_get] (empty) CLOCK: 1 HRTIMER_CLOCK_BASE: ffff9a775f95ef00 [ktime_get_real] (empty) CLOCK: 2 HRTIMER_CLOCK_BASE: ffff9a775f95ef80 [ktime_get_boottime] (empty) ... CLOCK: 7 HRTIMER_CLOCK_BASE: ffff9a775f95f200 [ktime_get_clocktai] (empty) Signed-off-by: Lianbo Jiang <lijiang(a)redhat.com&gt; --- kernel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel.c b/kernel.c index 37b7af74ed2e..36c57ed501ad 100644 --- a/kernel.c +++ b/kernel.c @@ -7675,7 +7675,8 @@ dump_hrtimer_data(const ulong *cpus) if (VALID_STRUCT(hrtimer_clock_base)) { hrtimer_max_clock_bases = 2; if (symbol_exists("ktime_get_boottime")) - hrtimer_max_clock_bases = 3; + hrtimer_max_clock_bases = MEMBER_SIZE("hrtimer_cpu_base", "clock_base") / + SIZE(hrtimer_clock_base); } else if (VALID_STRUCT(hrtimer_base)) { max_hrtimer_bases = 2; } else -- 2.20.1