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perf tools: Use compression id in decompress_kmodule()

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Once we parsed out the compression ID, we dont need to iterate all
available compressions and we can call it directly.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180817094813.15086-9-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2018-08-17 11:48:08 +02:00 • committed by Arnaldo Carvalho de Melo
parent 2af5247530
commit dde755a90e
1 changed files with 3 additions and 21 deletions
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24
tools/perf/util/dso.c
View file

@ -244,18 +244,6 @@ bool is_kernel_module(const char *pathname, int cpumode)
return m.kmod; return m.kmod;
} }
static bool decompress_to_file(const char *ext, const char *filename, int output_fd)
{
unsigned i;
for (i = 0; compressions[i].fmt; i++) {
if (!strcmp(ext, compressions[i].fmt))
return !compressions[i].decompress(filename,
output_fd);
}
return false;
}
bool dso__needs_decompress(struct dso *dso) bool dso__needs_decompress(struct dso *dso)
{ {
return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP || return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP ||
@ -265,31 +253,25 @@ bool dso__needs_decompress(struct dso *dso)
static int decompress_kmodule(struct dso *dso, const char *name, char *tmpbuf) static int decompress_kmodule(struct dso *dso, const char *name, char *tmpbuf)
{ {
int fd = -1; int fd = -1;
struct kmod_path m;
if (!dso__needs_decompress(dso)) if (!dso__needs_decompress(dso))
return -1; return -1;
if (kmod_path__parse_ext(&m, dso->long_name)) if (dso->comp == COMP_ID__NONE)
return -1; return -1;
if (!m.comp)
goto out;
fd = mkstemp(tmpbuf); fd = mkstemp(tmpbuf);
if (fd < 0) { if (fd < 0) {
dso->load_errno = errno; dso->load_errno = errno;
goto out; return -1;
} }
if (!decompress_to_file(m.ext, name, fd)) { if (compressions[dso->comp].decompress(name, fd)) {
dso->load_errno = DSO_LOAD_ERRNO__DECOMPRESSION_FAILURE; dso->load_errno = DSO_LOAD_ERRNO__DECOMPRESSION_FAILURE;
close(fd); close(fd);
fd = -1; fd = -1;
} }
out:
free(m.ext);
return fd; return fd;
} }