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| author | Marco Elver <elver@google.com> | 2022-08-29 14:47:10 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-08-30 10:56:21 +0200 |
| commit | db5f6f853194c5e02d8551425b5e86b7e0b81806 (patch) | |
| tree | 15b47080e1847fcecc02307f0142013139e4cb41 | |
| parent | perf/hw_breakpoint: Optimize list of per-task breakpoints (diff) | |
| download | linux-db5f6f853194c5e02d8551425b5e86b7e0b81806.tar.xz linux-db5f6f853194c5e02d8551425b5e86b7e0b81806.zip | |
perf/hw_breakpoint: Mark data __ro_after_init
Mark read-only data after initialization as __ro_after_init.
While we are here, turn 'constraints_initialized' into a bool.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20220829124719.675715-6-elver@google.com
| -rw-r--r-- | kernel/events/hw_breakpoint.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c index 6d09edc80d19..7df46b276452 100644 --- a/kernel/events/hw_breakpoint.c +++ b/kernel/events/hw_breakpoint.c @@ -46,7 +46,7 @@ struct bp_cpuinfo { }; static DEFINE_PER_CPU(struct bp_cpuinfo, bp_cpuinfo[TYPE_MAX]); -static int nr_slots[TYPE_MAX]; +static int nr_slots[TYPE_MAX] __ro_after_init; static struct bp_cpuinfo *get_bp_info(int cpu, enum bp_type_idx type) { @@ -62,7 +62,7 @@ static const struct rhashtable_params task_bps_ht_params = { .automatic_shrinking = true, }; -static int constraints_initialized; +static bool constraints_initialized __ro_after_init; /* Gather the number of total pinned and un-pinned bp in a cpuset */ struct bp_busy_slots { @@ -739,7 +739,7 @@ int __init init_hw_breakpoint(void) if (ret) goto err; - constraints_initialized = 1; + constraints_initialized = true; perf_pmu_register(&perf_breakpoint, "breakpoint", PERF_TYPE_BREAKPOINT); |