linux/tools/perf/include/bpf/unistd.h

// SPDX-License-Identifier: LGPL-2.1

#include <bpf.h>

static int (*bpf_get_current_pid_tgid)(void) = (void *)BPF_FUNC_get_current_pid_tgid;

static pid_t getpid(void)
{
	return bpf_get_current_pid_tgid();
}
perf bpf: Add unistd.h to the headers accessible to bpf proggies Start with a getpid() function wrapping BPF_FUNC_get_current_pid_tgid, idea is to mimic the system headers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-zo8hv22onidep7tm785dzxfk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2018-11-07 02:21:45 +08:00			`// SPDX-License-Identifier: LGPL-2.1`

perf bpf: Remove bpf/ subdir from bpf.h headers used to build bpf events The bpf.h file needed gets installed in /usr/lib/include/perf/bpf/bpf.h, and /usr/lib/include/perf/ is added to the include path passed to clang to build the eBPF bytecode, so just remove "bpf/", its directly in the path passed already. This was working by accident, fix it. I.e. now this is back working: # cat /home/acme/git/perf/tools/perf/examples/bpf/hello.c #include <stdio.h> int syscall_enter(openat)(void *args) { puts("Hello, world\n"); return 0; } license(GPL); # perf trace -e /home/acme/git/perf/tools/perf/examples/bpf/hello.c 0.000 pickup/21493 __bpf_stdout__(Hello, world) 56.462 sh/13539 __bpf_stdout__(Hello, world) 56.536 sh/13539 __bpf_stdout__(Hello, world) 56.673 sh/13539 __bpf_stdout__(Hello, world) 56.781 sh/13539 __bpf_stdout__(Hello, world) 56.707 perf/13182 __bpf_stdout__(Hello, world) 56.849 perf/13182 __bpf_stdout__(Hello, world) ^C # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-d9myswhgo8gfi3vmehdqpxa7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2020-02-15 03:21:40 +08:00			`#include <bpf.h>`
perf bpf: Add unistd.h to the headers accessible to bpf proggies Start with a getpid() function wrapping BPF_FUNC_get_current_pid_tgid, idea is to mimic the system headers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-zo8hv22onidep7tm785dzxfk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 2018-11-07 02:21:45 +08:00
			`static int (bpf_get_current_pid_tgid)(void) = (void )BPF_FUNC_get_current_pid_tgid;`

			`static pid_t getpid(void)`
			`{`
			`return bpf_get_current_pid_tgid();`
			`}`