perf trace beauty: Implement pid_fd beautifier
One that given a pid and a fd, will try to get the path for that fd. Will be used in the upcoming kcmp's KCMP_FILE beautifier. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andrey Vagin <avagin@openvz.org> Cc: Cyrill Gorcunov <gorcunov@openvz.org> 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: http://lkml.kernel.org/n/tip-7ketygp2dvs9h13wuakfncws@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -988,6 +988,23 @@ size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg)
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return printed;
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return printed;
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}
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}
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size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size)
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{
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size_t printed = scnprintf(bf, size, "%d", fd);
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struct thread *thread = machine__find_thread(trace->host, pid, pid);
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if (thread) {
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const char *path = thread__fd_path(thread, fd, trace);
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if (path)
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printed += scnprintf(bf + printed, size - printed, "<%s>", path);
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thread__put(thread);
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}
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return printed;
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}
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static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
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static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
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struct syscall_arg *arg)
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struct syscall_arg *arg)
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{
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{
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@ -3,6 +3,7 @@
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <sys/types.h>
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struct strarray {
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struct strarray {
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int offset;
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int offset;
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@ -26,6 +27,8 @@ size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const cha
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struct trace;
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struct trace;
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struct thread;
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struct thread;
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size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size);
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/**
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/**
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* @val: value of syscall argument being formatted
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* @val: value of syscall argument being formatted
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* @args: All the args, use syscall_args__val(arg, nth) to access one
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* @args: All the args, use syscall_args__val(arg, nth) to access one
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