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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-01-25 04:05:51 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-04-12 01:31:02 +0300 |
| commit | 3bedebcf63c2ad7396f1be138bbef91a402f33cd (patch) | |
| tree | 578f18b4ad9012e2f491ab426b21e29dda7a529b /kernel/rcu/srcutree.c | |
| parent | e2f638365dd6283b7df1cb5e82f5b2746359f062 (diff) | |
| download | linux-3bedebcf63c2ad7396f1be138bbef91a402f33cd.tar.xz | |
srcu: Make rcutorture dump the SRCU size state
This commit adds the numeric and string version of ->srcu_size_state to
the Tree-SRCU-specific portion of the rcutorture output.
[ paulmck: Apply feedback from kernel test robot and Dan Carpenter. ]
[ quic_neeraju: Apply feedback from Jiapeng Chong. ]
Co-developed-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/srcutree.c')
| -rw-r--r-- | kernel/rcu/srcutree.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c index 00f9aed6f7b9..0874e3be6a5a 100644 --- a/kernel/rcu/srcutree.c +++ b/kernel/rcu/srcutree.c @@ -1407,15 +1407,33 @@ void srcutorture_get_gp_data(enum rcutorture_type test_type, } EXPORT_SYMBOL_GPL(srcutorture_get_gp_data); +static const char * const srcu_size_state_name[] = { + "SRCU_SIZE_SMALL", + "SRCU_SIZE_ALLOC", + "SRCU_SIZE_WAIT_BARRIER", + "SRCU_SIZE_WAIT_CALL", + "SRCU_SIZE_WAIT_CBS1", + "SRCU_SIZE_WAIT_CBS2", + "SRCU_SIZE_WAIT_CBS3", + "SRCU_SIZE_WAIT_CBS4", + "SRCU_SIZE_BIG", + "SRCU_SIZE_???", +}; + void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf) { int cpu; int idx; unsigned long s0 = 0, s1 = 0; + int ss_state = READ_ONCE(ssp->srcu_size_state); + int ss_state_idx = ss_state; idx = ssp->srcu_idx & 0x1; - pr_alert("%s%s Tree SRCU g%ld per-CPU(idx=%d):", - tt, tf, rcu_seq_current(&ssp->srcu_gp_seq), idx); + if (ss_state < 0 || ss_state >= ARRAY_SIZE(srcu_size_state_name)) + ss_state_idx = ARRAY_SIZE(srcu_size_state_name) - 1; + pr_alert("%s%s Tree SRCU g%ld state %d (%s) per-CPU(idx=%d):", + tt, tf, rcu_seq_current(&ssp->srcu_gp_seq), ss_state, + srcu_size_state_name[ss_state_idx], idx); for_each_possible_cpu(cpu) { unsigned long l0, l1; unsigned long u0, u1; |