diff options
Diffstat (limited to 'tools/perf/util/bpf_skel')
| -rw-r--r-- | tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c | 4 | ||||
| -rw-r--r-- | tools/perf/util/bpf_skel/bperf_cgroup.bpf.c | 18 | ||||
| -rw-r--r-- | tools/perf/util/bpf_skel/bperf_cgroup.h | 15 |
3 files changed, 25 insertions, 12 deletions
diff --git a/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c index cb86e261b4de..2a6e61864ee0 100644 --- a/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c +++ b/tools/perf/util/bpf_skel/augmented_raw_syscalls.bpf.c @@ -45,7 +45,7 @@ struct syscalls_sys_enter { __uint(type, BPF_MAP_TYPE_PROG_ARRAY); __type(key, __u32); __type(value, __u32); - __uint(max_entries, 512); + __uint(max_entries, 1024); } syscalls_sys_enter SEC(".maps"); /* @@ -57,7 +57,7 @@ struct syscalls_sys_exit { __uint(type, BPF_MAP_TYPE_PROG_ARRAY); __type(key, __u32); __type(value, __u32); - __uint(max_entries, 512); + __uint(max_entries, 1024); } syscalls_sys_exit SEC(".maps"); struct syscall_enter_args { diff --git a/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c b/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c index 57cab7647a9a..c2298a2decc9 100644 --- a/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c +++ b/tools/perf/util/bpf_skel/bperf_cgroup.bpf.c @@ -1,14 +1,12 @@ // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) // Copyright (c) 2021 Facebook // Copyright (c) 2021 Google +#include "bperf_cgroup.h" #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <bpf/bpf_core_read.h> -#define MAX_LEVELS 10 // max cgroup hierarchy level: arbitrary -#define MAX_EVENTS 32 // max events per cgroup: arbitrary - // NOTE: many of map and global data will be modified before loading // from the userspace (perf tool) using the skeleton helpers. @@ -97,7 +95,7 @@ static inline int get_cgroup_v1_idx(__u32 *cgrps, int size) cgrp = BPF_CORE_READ(p, cgroups, subsys[perf_subsys_id], cgroup); level = BPF_CORE_READ(cgrp, level); - for (cnt = 0; i < MAX_LEVELS; i++) { + for (cnt = 0; i < BPERF_CGROUP__MAX_LEVELS; i++) { __u64 cgrp_id; if (i > level) @@ -123,7 +121,7 @@ static inline int get_cgroup_v2_idx(__u32 *cgrps, int size) __u32 *elem; int cnt; - for (cnt = 0; i < MAX_LEVELS; i++) { + for (cnt = 0; i < BPERF_CGROUP__MAX_LEVELS; i++) { __u64 cgrp_id = bpf_get_current_ancestor_cgroup_id(i); if (cgrp_id == 0) @@ -148,17 +146,17 @@ static int bperf_cgroup_count(void) register int c = 0; struct bpf_perf_event_value val, delta, *prev_val, *cgrp_val; __u32 cpu = bpf_get_smp_processor_id(); - __u32 cgrp_idx[MAX_LEVELS]; + __u32 cgrp_idx[BPERF_CGROUP__MAX_LEVELS]; int cgrp_cnt; __u32 key, cgrp; long err; if (use_cgroup_v2) - cgrp_cnt = get_cgroup_v2_idx(cgrp_idx, MAX_LEVELS); + cgrp_cnt = get_cgroup_v2_idx(cgrp_idx, BPERF_CGROUP__MAX_LEVELS); else - cgrp_cnt = get_cgroup_v1_idx(cgrp_idx, MAX_LEVELS); + cgrp_cnt = get_cgroup_v1_idx(cgrp_idx, BPERF_CGROUP__MAX_LEVELS); - for ( ; idx < MAX_EVENTS; idx++) { + for ( ; idx < BPERF_CGROUP__MAX_EVENTS; idx++) { if (idx == num_events) break; @@ -186,7 +184,7 @@ static int bperf_cgroup_count(void) delta.enabled = val.enabled - prev_val->enabled; delta.running = val.running - prev_val->running; - for (c = 0; c < MAX_LEVELS; c++) { + for (c = 0; c < BPERF_CGROUP__MAX_LEVELS; c++) { if (c == cgrp_cnt) break; diff --git a/tools/perf/util/bpf_skel/bperf_cgroup.h b/tools/perf/util/bpf_skel/bperf_cgroup.h new file mode 100644 index 000000000000..3fb84b19d39a --- /dev/null +++ b/tools/perf/util/bpf_skel/bperf_cgroup.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Data structures shared between BPF and tools. */ +#ifndef __BPERF_CGROUP_H +#define __BPERF_CGROUP_H + +// These constants impact code size of bperf_cgroup.bpf.c that may result in BPF +// verifier issues. They are exposed to control the size and also to disable BPF +// counters when the number of user events is too large. + +// max cgroup hierarchy level: arbitrary +#define BPERF_CGROUP__MAX_LEVELS 10 +// max events per cgroup: arbitrary +#define BPERF_CGROUP__MAX_EVENTS 128 + +#endif /* __BPERF_CGROUP_H */ |