* [QUESTION] build errors and warnings when make M=samples/bpf
@ 2021-01-11 8:17 Tiezhu Yang
2021-01-11 15:55 ` Yonghong Song
0 siblings, 1 reply; 2+ messages in thread
From: Tiezhu Yang @ 2021-01-11 8:17 UTC (permalink / raw)
To: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh
Cc: netdev, bpf, Xuefeng Li
Hi all,
I found the following build errors and warnings when make M=samples/bpf
on the Loongson 3A3000 platform which belongs to MIPS arch.
Are theseknown issues? Should I submit patches to fix them? (1) fatal error:
'asm/rwonce.h' file not found
CLANG-bpf samples/bpf/xdpsock_kern.o In file included from
samples/bpf/xdpsock_kern.c:2: In file included from
./include/linux/bpf.h:9: In file included from
./include/linux/workqueue.h:9: In file included from
./include/linux/timer.h:5: In file included from
./include/linux/list.h:9: In file included from
./include/linux/kernel.h:10: ./include/linux/compiler.h:246:10: fatal
error: 'asm/rwonce.h' file not found #include <asm/rwonce.h>
^~~~~~~~~~~~~~ 1 error generated. HEAD is now at 7c53f6b... Linux
5.11-rc3 [yangtiezhu@linux linux.git]$ find . -name rwonce.h
./include/asm-generic/rwonce.h ./arch/arm64/include/asm/rwonce.h
./arch/alpha/include/asm/rwonce.h The following changes can fix the
above errors, is it right? [yangtiezhu@linux linux.git]$ vim
include/linux/compiler.h [yangtiezhu@linux linux.git]$ git diff diff
--git a/include/linux/compiler.h b/include/linux/compiler.h index
b8fe0c2..b73b18c 100644 --- a/include/linux/compiler.h +++
b/include/linux/compiler.h @@ -243,6 +243,8 @@ static inline void
*offset_to_ptr(const int *off) */ #define
prevent_tail_call_optimization() mb() +#ifdef CONFIG_ARM64 ||
CONFIG_ALPHA #include <asm/rwonce.h> +#endif #endif /*
__LINUX_COMPILER_H */ (2) printf format warnings
CC samples/bpf/ibumad_user.o
samples/bpf/ibumad_user.c: In function ‘dump_counts’:
samples/bpf/ibumad_user.c:46:24: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("0x%02x : %llu\n", key, value);
~~~^ ~~~~~
%lu
CC samples/bpf/lathist_user.o
CC samples/bpf/lwt_len_hist_user.o
CC samples/bpf/map_perf_test_user.o
CC samples/bpf/offwaketime_user.o
samples/bpf/offwaketime_user.c: In function ‘print_ksym’:
samples/bpf/offwaketime_user.c:34:17: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%s/%llx;", sym->name, addr);
~~~^ ~~~~
%lx
samples/bpf/offwaketime_user.c: In function ‘print_stack’:
samples/bpf/offwaketime_user.c:68:17: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf(";%s %lld\n", key->waker, count);
~~~^ ~~~~~
%ld
CC samples/bpf/sampleip_user.o
samples/bpf/sampleip_user.c: In function ‘print_ip_map’:
samples/bpf/sampleip_user.c:118:20: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("0x%-17llx %-32s %u\n", counts[i].ip, sym->name,
~~~~~~^ ~~~~~~~~~~~~
%-17lx
samples/bpf/sampleip_user.c:121:20: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("0x%-17llx %-32s %u\n", counts[i].ip, "(user)",
~~~~~~^ ~~~~~~~~~~~~
%-17lx
CC samples/bpf/sockex1_user.o
CC samples/bpf/sockex2_user.o
samples/bpf/sockex2_user.c: In function ‘main’:
samples/bpf/sockex2_user.c:47:27: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("ip %s bytes %lld packets %lld\n",
~~~^
%ld
samples/bpf/sockex2_user.c:49:11:
value.bytes, value.packets);
~~~~~~~~~~~
samples/bpf/sockex2_user.c:47:40: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("ip %s bytes %lld packets %lld\n",
~~~^
%ld
samples/bpf/sockex2_user.c:49:24:
value.bytes, value.packets);
~~~~~~~~~~~~~
CC samples/bpf/sockex3_user.o
samples/bpf/sockex3_user.c: In function ‘main’:
samples/bpf/sockex3_user.c:91:36: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 6 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%s.%05d -> %s.%05d %12lld %12lld\n",
~~~~~^
%12ld
samples/bpf/sockex3_user.c:96:11:
value.bytes, value.packets);
~~~~~~~~~~~
samples/bpf/sockex3_user.c:91:43: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 7 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%s.%05d -> %s.%05d %12lld %12lld\n",
~~~~~^
%12ld
samples/bpf/sockex3_user.c:96:24:
value.bytes, value.packets);
~~~~~~~~~~~~~
CC samples/bpf/spintest_user.o
CC samples/bpf/syscall_tp_user.o
CC samples/bpf/task_fd_query_user.o
samples/bpf/task_fd_query_user.c: In function ‘test_debug_fs_kprobe’:
samples/bpf/task_fd_query_user.c:116:52: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("buf: %s, fd_type: %u, probe_offset: 0x%llx,"
~~~^
%lx
samples/bpf/task_fd_query_user.c:118:24:
buf, fd_type, probe_offset, probe_addr);
~~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:116:10: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("buf: %s, fd_type: %u, probe_offset: 0x%llx,"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:118:38:
buf, fd_type, probe_offset, probe_addr);
~~~~~~~~~~
samples/bpf/task_fd_query_user.c:117:29: note: format string is defined here
" probe_addr: 0x%llx\n",
~~~^
%lx
samples/bpf/task_fd_query_user.c: In function ‘test_nondebug_fs_probe’:
samples/bpf/task_fd_query_user.c:190:10: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("FAIL: %s, "
^~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:192:38:
__func__, name ? name : "", offset, addr, is_return);
~~~~~~
samples/bpf/task_fd_query_user.c:191:36: note: format string is defined here
"for name %s, offset 0x%llx, addr 0x%llx, is_return %d\n",
~~~^
%lx
samples/bpf/task_fd_query_user.c:190:10: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("FAIL: %s, "
^~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:192:46:
__func__, name ? name : "", offset, addr, is_return);
~~~~
samples/bpf/task_fd_query_user.c:191:49: note: format string is defined here
"for name %s, offset 0x%llx, addr 0x%llx, is_return %d\n",
~~~^
%lx
samples/bpf/task_fd_query_user.c:208:50: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("FAIL: %s, incorrect probe_offset 0x%llx\n",
~~~^
%lx
__func__, probe_offset);
~~~~~~~~~~~~
samples/bpf/task_fd_query_user.c:220:48: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("FAIL: %s, incorrect probe_addr 0x%llx\n",
~~~^
%lx
__func__, probe_addr);
~~~~~~~~~~
samples/bpf/task_fd_query_user.c: In function ‘test_debug_fs_uprobe’:
samples/bpf/task_fd_query_user.c:300:49: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("FAIL: %s, incorrect probe_offset 0x%llx\n", __func__,
~~~^
%lx
probe_offset);
~~~~~~~~~~~~
CC samples/bpf/tc_l2_redirect_user.o
CC samples/bpf/test_cgrp2_array_pin.o
CC samples/bpf/test_cgrp2_attach.o
CC samples/bpf/test_cgrp2_sock.o
CC samples/bpf/test_cgrp2_sock2.o
CC samples/bpf/test_current_task_under_cgroup_user.o
CC samples/bpf/test_map_in_map_user.o
CC samples/bpf/test_overhead_user.o
CC samples/bpf/test_probe_write_user_user.o
CC samples/bpf/trace_event_user.o
samples/bpf/trace_event_user.c: In function ‘print_addr’:
samples/bpf/trace_event_user.c:50:13: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%llx;", addr);
~~~^ ~~~~
%lx
samples/bpf/trace_event_user.c: In function ‘print_stack’:
samples/bpf/trace_event_user.c:67:14: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%3lld %s;", count, key->comm);
~~~~^ ~~~~~
%3ld
CC samples/bpf/trace_output_user.o
samples/bpf/trace_output_user.c: In function ‘print_bpf_output’:
samples/bpf/trace_output_user.c:30:22: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("BUG pid %llx cookie %llx sized %d\n",
~~~^
%lx
e->pid, e->cookie, size);
~~~~~~
samples/bpf/trace_output_user.c:30:34: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("BUG pid %llx cookie %llx sized %d\n",
~~~^
%lx
e->pid, e->cookie, size);
~~~~~~~~~
CC samples/bpf/tracex1_user.o
CC samples/bpf/tracex2_user.o
CC samples/bpf/tracex3_user.o
samples/bpf/tracex3_user.c: In function ‘print_hist’:
samples/bpf/tracex3_user.c:105:16: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf(" # %lld\n", total_events);
~~~^ ~~~~~~~~~~~~
%ld
CC samples/bpf/tracex4_user.o
samples/bpf/tracex4_user.c: In function ‘print_old_objects’:
samples/bpf/tracex4_user.c:44:20: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n",
~~~^
%lx
next_key, (val - v.val) / 1000000000ll, v.ip);
~~~~~~~~
samples/bpf/tracex4_user.c:44:61: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n",
~~~^
%lx
next_key, (val - v.val) / 1000000000ll, v.ip);
~~~~
CC samples/bpf/tracex5_user.o
CC samples/bpf/tracex6_user.o
samples/bpf/tracex6_user.c: In function ‘check_on_cpu’:
samples/bpf/tracex6_user.c:54:31: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
fprintf(stderr, "CPU %d: %llu\n", cpu, value);
~~~^ ~~~~~
%lu
samples/bpf/tracex6_user.c:62:40: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
fprintf(stderr, "CPU %d: counter: %llu, enabled: %llu, running: %llu\n", cpu,
~~~^
%lu
value2.counter, value2.enabled, value2.running);
~~~~~~~~~~~~~~
samples/bpf/tracex6_user.c:62:55: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
fprintf(stderr, "CPU %d: counter: %llu, enabled: %llu, running: %llu\n", cpu,
~~~^
%lu
value2.counter, value2.enabled, value2.running);
~~~~~~~~~~~~~~
samples/bpf/tracex6_user.c:62:70: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 6 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
fprintf(stderr, "CPU %d: counter: %llu, enabled: %llu, running: %llu\n", cpu,
~~~^
%lu
value2.counter, value2.enabled, value2.running);
~~~~~~~~~~~~~~
CC samples/bpf/tracex7_user.o
CC samples/bpf/xdp1_user.o
samples/bpf/xdp1_user.c: In function ‘poll_stats’:
samples/bpf/xdp1_user.c:62:28: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("proto %u: %10llu pkt/s\n",
~~~~~^
%10lu
key, (sum - prev[key]) / interval);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC samples/bpf/xdp_adjust_tail_user.o
samples/bpf/xdp_adjust_tail_user.c: In function ‘poll_stats’:
samples/bpf/xdp_adjust_tail_user.c:65:46: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("icmp \"packet too big\" sent: %10llu pkts\n", value);
~~~~~^ ~~~~~
%10lu
CC samples/bpf/xdp_fwd_user.o
CC samples/bpf/xdp_monitor_user.o
CC samples/bpf/xdp_redirect_cpu_user.o
CC samples/bpf/xdp_redirect_map_user.o
samples/bpf/xdp_redirect_map_user.c: In function ‘poll_stats’:
samples/bpf/xdp_redirect_map_user.c:80:29: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("ifindex %i: %10llu pkt/s\n",
~~~~~^
%10lu
ifindex, sum / interval);
~~~~~~~~~~~~~~
CC samples/bpf/xdp_redirect_user.o
samples/bpf/xdp_redirect_user.c: In function ‘poll_stats’:
samples/bpf/xdp_redirect_user.c:80:29: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("ifindex %i: %10llu pkt/s\n",
~~~~~^
%10lu
ifindex, sum / interval);
~~~~~~~~~~~~~~
CC samples/bpf/xdp_router_ipv4_user.o
samples/bpf/xdp_router_ipv4_user.c: In function ‘read_arp’:
samples/bpf/xdp_router_ipv4_user.c:409:22: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 3 has type ‘__be64’ {aka ‘long unsigned int’} [-Wformat=]
sprintf(mac, "%lld",
~~~^
%ld
*((__be64 *)RTA_DATA(rt_attr)));
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
samples/bpf/xdp_router_ipv4_user.c:418:20: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__be64’ {aka ‘long unsigned int’} [-Wformat=]
printf("%x\t\t%llx\n", arp_entry.dst, arp_entry.mac);
~~~^ ~~~~~~~~~~~~~
%lx
samples/bpf/xdp_router_ipv4_user.c: In function ‘monitor_route’:
samples/bpf/xdp_router_ipv4_user.c:579:28: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("proto %u: %10llu pkt/s\n",
~~~~~^
%10lu
key, sum / interval);
~~~~~~~~~~~~~~
CC samples/bpf/xdp_rxq_info_user.o
CC samples/bpf/xdp_sample_pkts_user.o
CC samples/bpf/xdp_tx_iptunnel_user.o
samples/bpf/xdp_tx_iptunnel_user.c: In function ‘poll_stats’:
samples/bpf/xdp_tx_iptunnel_user.c:74:32: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("proto %u: sum:%10llu pkts, rate:%10llu pkts/s\n",
~~~~~^
%10lu
proto, sum, sum / STATS_INTERVAL_S);
~~~
samples/bpf/xdp_tx_iptunnel_user.c:74:50: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 4 has type ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("proto %u: sum:%10llu pkts, rate:%10llu pkts/s\n",
~~~~~^
%10lu
CC samples/bpf/xdpsock_ctrl_proc.o
CC samples/bpf/xdpsock_user.o
samples/bpf/xdpsock_user.c: In function ‘hex_dump’:
samples/bpf/xdpsock_user.c:542:24: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘u64’ {aka ‘long unsigned int’} [-Wformat=]
sprintf(buf, "addr=%llu", addr);
~~~^ ~~~~
%lu
CC samples/bpf/xsk_fwd.o
samples/bpf/xsk_fwd.c: In function ‘print_port_stats’:
samples/bpf/xsk_fwd.c:939:23: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("| %4d | %12llu | %13.0f | %12llu | %13.0f |\n",
~~~~~^
%12lu
samples/bpf/xsk_fwd.c:941:9:
p->n_pkts_rx,
~~~~~~~~~~~~
samples/bpf/xsk_fwd.c:939:41: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 5 has type ‘u64’ {aka ‘long unsigned int’} [-Wformat=]
printf("| %4d | %12llu | %13.0f | %12llu | %13.0f |\n",
~~~~~^
%12lu
samples/bpf/xsk_fwd.c:943:9:
p->n_pkts_tx,
~~~~~~~~~~~~
Thanks,
Tiezhu
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [QUESTION] build errors and warnings when make M=samples/bpf
2021-01-11 8:17 [QUESTION] build errors and warnings when make M=samples/bpf Tiezhu Yang
@ 2021-01-11 15:55 ` Yonghong Song
0 siblings, 0 replies; 2+ messages in thread
From: Yonghong Song @ 2021-01-11 15:55 UTC (permalink / raw)
To: Tiezhu Yang, Alexei Starovoitov, Daniel Borkmann,
Andrii Nakryiko, Martin KaFai Lau, Song Liu, John Fastabend,
KP Singh
Cc: netdev, bpf, Xuefeng Li
On 1/11/21 12:17 AM, Tiezhu Yang wrote:
> Hi all,
>
> I found the following build errors and warnings when make M=samples/bpf
> on the Loongson 3A3000 platform which belongs to MIPS arch.
>
> Are theseknown issues? Should I submit patches to fix them? (1) fatal
> error: 'asm/rwonce.h' file not found
These issues may be mips specific. Sure you can submit patches to fix
these issues.
>
> CLANG-bpf samples/bpf/xdpsock_kern.o In file included from
> samples/bpf/xdpsock_kern.c:2: In file included from
> ./include/linux/bpf.h:9: In file included from
> ./include/linux/workqueue.h:9: In file included from
> ./include/linux/timer.h:5: In file included from
> ./include/linux/list.h:9: In file included from
> ./include/linux/kernel.h:10: ./include/linux/compiler.h:246:10: fatal
> error: 'asm/rwonce.h' file not found #include <asm/rwonce.h>
> ^~~~~~~~~~~~~~ 1 error generated. HEAD is now at 7c53f6b... Linux
> 5.11-rc3 [yangtiezhu@linux linux.git]$ find . -name rwonce.h
> ./include/asm-generic/rwonce.h ./arch/arm64/include/asm/rwonce.h
> ./arch/alpha/include/asm/rwonce.h The following changes can fix the
> above errors, is it right? [yangtiezhu@linux linux.git]$ vim
> include/linux/compiler.h [yangtiezhu@linux linux.git]$ git diff diff
> --git a/include/linux/compiler.h b/include/linux/compiler.h index
> b8fe0c2..b73b18c 100644 --- a/include/linux/compiler.h +++
> b/include/linux/compiler.h @@ -243,6 +243,8 @@ static inline void
> *offset_to_ptr(const int *off) */ #define
> prevent_tail_call_optimization() mb() +#ifdef CONFIG_ARM64 ||
> CONFIG_ALPHA #include <asm/rwonce.h> +#endif #endif /*
> __LINUX_COMPILER_H */ (2) printf format warnings
>
> CC samples/bpf/ibumad_user.o
> samples/bpf/ibumad_user.c: In function ‘dump_counts’:
> samples/bpf/ibumad_user.c:46:24: warning: format ‘%llu’ expects argument
> of type ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka
> ‘long unsigned int’} [-Wformat=]
> printf("0x%02x : %llu\n", key, value);
> ~~~^ ~~~~~
> %lu
For these issues, __u64 defined as "unsigned long long" on x64 so we
do not have issues. On your system, it is defined as "unsigned long",
hence the warning. When you try to fix the issue, please make x64 works
fine. The same for above "rwonce.h" issue.
> CC samples/bpf/lathist_user.o
> CC samples/bpf/lwt_len_hist_user.o
> CC samples/bpf/map_perf_test_user.o
> CC samples/bpf/offwaketime_user.o
> samples/bpf/offwaketime_user.c: In function ‘print_ksym’:
> samples/bpf/offwaketime_user.c:34:17: warning: format ‘%llx’ expects
> argument of type ‘long long unsigned int’, but argument 3 has type
> ‘__u64’ {aka ‘long unsigned int’} [-Wformat=]
> printf("%s/%llx;", sym->name, addr);
> ~~~^ ~~~~
> %lx
[...]
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-01-11 15:55 ` Yonghong Song
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