mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-08 10:31:43 +01:00
Björn Töpel
6bd7cf6657
For users of perf-sys.h outside perf, e.g. samples/bpf/bpf_load.c, it's convenient not to depend on test_attr__*. After commit91854f9a07("perf tools: Move everything related to sys_perf_event_open() to perf-sys.h"), all users of perf-sys.h will depend on test_attr__enabled and test_attr__open. This commit enables a user to define HAVE_ATTR_TEST to zero in order to omit the test dependency. Fixes:91854f9a07("perf tools: Move everything related to sys_perf_event_open() to perf-sys.h") Signed-off-by: Björn Töpel <[email protected]> Acked-by: Song Liu <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: http://lore.kernel.org/bpf/[email protected]
40 lines
856 B
C
40 lines
856 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_SYS_H
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#define _PERF_SYS_H
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <linux/compiler.h>
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struct perf_event_attr;
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extern bool test_attr__enabled;
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void test_attr__ready(void);
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void test_attr__init(void);
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void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
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int fd, int group_fd, unsigned long flags);
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#ifndef HAVE_ATTR_TEST
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#define HAVE_ATTR_TEST 1
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#endif
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static inline int
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sys_perf_event_open(struct perf_event_attr *attr,
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pid_t pid, int cpu, int group_fd,
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unsigned long flags)
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{
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int fd;
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fd = syscall(__NR_perf_event_open, attr, pid, cpu,
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group_fd, flags);
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#if HAVE_ATTR_TEST
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if (unlikely(test_attr__enabled))
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test_attr__open(attr, pid, cpu, fd, group_fd, flags);
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#endif
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return fd;
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}
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#endif /* _PERF_SYS_H */
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