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perf kvm: Move code to generate filename for perf-kvm to function.
The code in builtin-kvm.c to generate filename for perf-kvm is useful to other command such as builtin-diff. This patch move the related code form builtin-kvm.c to util/util.c and wrap them in a function named get_filename_for_perf_kvm. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Link: http://lkml.kernel.org/r/5e09a5c47e8a495e888cbdc65a6fafb2c950f529.1386368672.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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3 changed files with 17 additions and 6 deletions
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@ -1713,12 +1713,7 @@ int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
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perf_guest = 1;
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if (!file_name) {
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if (perf_host && !perf_guest)
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file_name = strdup("perf.data.host");
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else if (!perf_host && perf_guest)
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file_name = strdup("perf.data.guest");
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else
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file_name = strdup("perf.data.kvm");
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file_name = get_filename_for_perf_kvm();
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if (!file_name) {
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pr_err("Failed to allocate memory for filename\n");
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@ -482,3 +482,17 @@ int filename__read_str(const char *filename, char **buf, size_t *sizep)
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close(fd);
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return err;
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}
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const char *get_filename_for_perf_kvm(void)
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{
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const char *filename;
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if (perf_host && !perf_guest)
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filename = strdup("perf.data.host");
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else if (!perf_host && perf_guest)
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filename = strdup("perf.data.guest");
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else
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filename = strdup("perf.data.kvm");
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return filename;
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}
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@ -321,4 +321,6 @@ void free_srcline(char *srcline);
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int filename__read_int(const char *filename, int *value);
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int filename__read_str(const char *filename, char **buf, size_t *sizep);
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const char *get_filename_for_perf_kvm(void);
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#endif /* GIT_COMPAT_UTIL_H */
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