diff options
| -rw-r--r-- | tools/perf/Makefile.perf | 5 | ||||
| -rw-r--r-- | tools/perf/examples/bpf/5sec.c | 53 | ||||
| -rw-r--r-- | tools/perf/examples/bpf/empty.c | 12 | ||||
| -rw-r--r-- | tools/perf/examples/bpf/hello.c | 27 | ||||
| -rw-r--r-- | tools/perf/examples/bpf/sys_enter_openat.c | 33 |
5 files changed, 0 insertions, 130 deletions
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 40663c69b25c..c90d55786a02 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -958,11 +958,6 @@ ifndef NO_JVMTI endif $(call QUIET_INSTALL, libexec) \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)' -ifndef NO_LIBBPF - $(call QUIET_INSTALL, bpf-examples) \ - $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perf_examples_instdir_SQ)/bpf'; \ - $(INSTALL) examples/bpf/*.c -m 644 -t '$(DESTDIR_SQ)$(perf_examples_instdir_SQ)/bpf' -endif $(call QUIET_INSTALL, perf-archive) \ $(INSTALL) $(OUTPUT)perf-archive -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)' $(call QUIET_INSTALL, perf-iostat) \ diff --git a/tools/perf/examples/bpf/5sec.c b/tools/perf/examples/bpf/5sec.c deleted file mode 100644 index 3bd7fc17631f..000000000000 --- a/tools/perf/examples/bpf/5sec.c +++ /dev/null @@ -1,53 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - Description: - - . Disable strace like syscall tracing (--no-syscalls), or try tracing - just some (-e *sleep). - - . Attach a filter function to a kernel function, returning when it should - be considered, i.e. appear on the output. - - . Run it system wide, so that any sleep of >= 5 seconds and < than 6 - seconds gets caught. - - . Ask for callgraphs using DWARF info, so that userspace can be unwound - - . While this is running, run something like "sleep 5s". - - . If we decide to add tv_nsec as well, then it becomes: - - int probe(hrtimer_nanosleep, rqtp->tv_sec rqtp->tv_nsec)(void *ctx, int err, long sec, long nsec) - - I.e. add where it comes from (rqtp->tv_nsec) and where it will be - accessible in the function body (nsec) - - # perf trace --no-syscalls -e tools/perf/examples/bpf/5sec.c/call-graph=dwarf/ - 0.000 perf_bpf_probe:func:(ffffffff9811b5f0) tv_sec=5 - hrtimer_nanosleep ([kernel.kallsyms]) - __x64_sys_nanosleep ([kernel.kallsyms]) - do_syscall_64 ([kernel.kallsyms]) - entry_SYSCALL_64 ([kernel.kallsyms]) - __GI___nanosleep (/usr/lib64/libc-2.26.so) - rpl_nanosleep (/usr/bin/sleep) - xnanosleep (/usr/bin/sleep) - main (/usr/bin/sleep) - __libc_start_main (/usr/lib64/libc-2.26.so) - _start (/usr/bin/sleep) - ^C# - - Copyright (C) 2018 Red Hat, Inc., Arnaldo Carvalho de Melo <acme@redhat.com> -*/ - -#include <linux/bpf.h> -#include <bpf/bpf_helpers.h> - -#define NSEC_PER_SEC 1000000000L - -SEC("hrtimer_nanosleep=hrtimer_nanosleep rqtp") -int hrtimer_nanosleep(void *ctx, int err, long long sec) -{ - return sec / NSEC_PER_SEC == 5ULL; -} - -char _license[] SEC("license") = "GPL"; diff --git a/tools/perf/examples/bpf/empty.c b/tools/perf/examples/bpf/empty.c deleted file mode 100644 index 3e296c0c53d7..000000000000 --- a/tools/perf/examples/bpf/empty.c +++ /dev/null @@ -1,12 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/bpf.h> -#include <bpf/bpf_helpers.h> - -struct syscall_enter_args; - -SEC("raw_syscalls:sys_enter") -int sys_enter(struct syscall_enter_args *args) -{ - return 0; -} -char _license[] SEC("license") = "GPL"; diff --git a/tools/perf/examples/bpf/hello.c b/tools/perf/examples/bpf/hello.c deleted file mode 100644 index e9080b0df158..000000000000 --- a/tools/perf/examples/bpf/hello.c +++ /dev/null @@ -1,27 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/bpf.h> -#include <bpf/bpf_helpers.h> - -struct __bpf_stdout__ { - __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); - __type(key, int); - __type(value, __u32); - __uint(max_entries, __NR_CPUS__); -} __bpf_stdout__ SEC(".maps"); - -#define puts(from) \ - ({ const int __len = sizeof(from); \ - char __from[sizeof(from)] = from; \ - bpf_perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \ - &__from, __len & (sizeof(from) - 1)); }) - -struct syscall_enter_args; - -SEC("raw_syscalls:sys_enter") -int sys_enter(struct syscall_enter_args *args) -{ - puts("Hello, world\n"); - return 0; -} - -char _license[] SEC("license") = "GPL"; diff --git a/tools/perf/examples/bpf/sys_enter_openat.c b/tools/perf/examples/bpf/sys_enter_openat.c deleted file mode 100644 index c4481c390d23..000000000000 --- a/tools/perf/examples/bpf/sys_enter_openat.c +++ /dev/null @@ -1,33 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Hook into 'openat' syscall entry tracepoint - * - * Test it with: - * - * perf trace -e tools/perf/examples/bpf/sys_enter_openat.c cat /etc/passwd > /dev/null - * - * It'll catch some openat syscalls related to the dynamic linked and - * the last one should be the one for '/etc/passwd'. - * - * The syscall_enter_openat_args can be used to get the syscall fields - * and use them for filtering calls, i.e. use in expressions for - * the return value. - */ - -#include <bpf/bpf.h> - -struct syscall_enter_openat_args { - unsigned long long unused; - long syscall_nr; - long dfd; - char *filename_ptr; - long flags; - long mode; -}; - -int syscall_enter(openat)(struct syscall_enter_openat_args *args) -{ - return 1; -} - -license(GPL); |