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https://github.com/edk2-porting/linux-next.git
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perf header: Add ->process callbacks to most of features
From now on each feature information is processed and saved in perf header so that it can be used wherever needed. The BRANCH_STACK feature is an exception since it needs nothing to be done. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1348474503-15070-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
Arnaldo Carvalho de Melo
parent
e93699b3c7
commit
a1ae565528
@ -22,6 +22,7 @@
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#include "cpumap.h"
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#include "pmu.h"
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#include "vdso.h"
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#include "strbuf.h"
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static bool no_buildid_cache = false;
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@ -1673,6 +1674,99 @@ static int process_build_id(struct perf_file_section *section,
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return 0;
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}
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static int process_hostname(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.hostname = do_read_string(fd, ph);
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return ph->env.hostname ? 0 : -ENOMEM;
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}
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static int process_osrelease(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.os_release = do_read_string(fd, ph);
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return ph->env.os_release ? 0 : -ENOMEM;
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}
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static int process_version(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.version = do_read_string(fd, ph);
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return ph->env.version ? 0 : -ENOMEM;
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}
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static int process_arch(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.arch = do_read_string(fd, ph);
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return ph->env.arch ? 0 : -ENOMEM;
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}
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static int process_nrcpus(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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size_t ret;
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u32 nr;
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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return -1;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_cpus_online = nr;
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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return -1;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_cpus_avail = nr;
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return 0;
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}
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static int process_cpudesc(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.cpu_desc = do_read_string(fd, ph);
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return ph->env.cpu_desc ? 0 : -ENOMEM;
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}
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static int process_cpuid(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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ph->env.cpuid = do_read_string(fd, ph);
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return ph->env.cpuid ? 0 : -ENOMEM;
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}
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static int process_total_mem(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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uint64_t mem;
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size_t ret;
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ret = read(fd, &mem, sizeof(mem));
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if (ret != sizeof(mem))
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return -1;
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if (ph->needs_swap)
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mem = bswap_64(mem);
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ph->env.total_mem = mem;
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return 0;
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}
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static char *read_cpuid(struct perf_header *ph, int fd)
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{
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return do_read_string(fd, ph);
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@ -1728,6 +1822,208 @@ process_event_desc(struct perf_file_section *section __maybe_unused,
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return 0;
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}
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static int process_cmdline(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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size_t ret;
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char *str;
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u32 nr, i;
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struct strbuf sb;
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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return -1;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_cmdline = nr;
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strbuf_init(&sb, 128);
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for (i = 0; i < nr; i++) {
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str = do_read_string(fd, ph);
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if (!str)
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goto error;
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/* include a NULL character at the end */
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strbuf_add(&sb, str, strlen(str) + 1);
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free(str);
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}
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ph->env.cmdline = strbuf_detach(&sb, NULL);
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return 0;
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error:
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strbuf_release(&sb);
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return -1;
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}
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static int process_cpu_topology(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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size_t ret;
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u32 nr, i;
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char *str;
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struct strbuf sb;
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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return -1;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_sibling_cores = nr;
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strbuf_init(&sb, 128);
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for (i = 0; i < nr; i++) {
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str = do_read_string(fd, ph);
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if (!str)
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goto error;
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/* include a NULL character at the end */
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strbuf_add(&sb, str, strlen(str) + 1);
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free(str);
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}
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ph->env.sibling_cores = strbuf_detach(&sb, NULL);
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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return -1;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_sibling_threads = nr;
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for (i = 0; i < nr; i++) {
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str = do_read_string(fd, ph);
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if (!str)
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goto error;
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/* include a NULL character at the end */
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strbuf_add(&sb, str, strlen(str) + 1);
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free(str);
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}
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ph->env.sibling_threads = strbuf_detach(&sb, NULL);
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return 0;
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error:
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strbuf_release(&sb);
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return -1;
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}
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static int process_numa_topology(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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size_t ret;
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u32 nr, node, i;
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char *str;
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uint64_t mem_total, mem_free;
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struct strbuf sb;
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/* nr nodes */
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ret = read(fd, &nr, sizeof(nr));
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if (ret != sizeof(nr))
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goto error;
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if (ph->needs_swap)
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nr = bswap_32(nr);
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ph->env.nr_numa_nodes = nr;
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strbuf_init(&sb, 256);
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for (i = 0; i < nr; i++) {
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/* node number */
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ret = read(fd, &node, sizeof(node));
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if (ret != sizeof(node))
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goto error;
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ret = read(fd, &mem_total, sizeof(u64));
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if (ret != sizeof(u64))
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goto error;
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ret = read(fd, &mem_free, sizeof(u64));
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if (ret != sizeof(u64))
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goto error;
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if (ph->needs_swap) {
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node = bswap_32(node);
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mem_total = bswap_64(mem_total);
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mem_free = bswap_64(mem_free);
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}
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strbuf_addf(&sb, "%u:%"PRIu64":%"PRIu64":",
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node, mem_total, mem_free);
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str = do_read_string(fd, ph);
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if (!str)
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goto error;
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/* include a NULL character at the end */
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strbuf_add(&sb, str, strlen(str) + 1);
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free(str);
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}
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ph->env.numa_nodes = strbuf_detach(&sb, NULL);
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return 0;
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error:
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strbuf_release(&sb);
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return -1;
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}
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static int process_pmu_mappings(struct perf_file_section *section __maybe_unused,
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struct perf_header *ph, int feat __maybe_unused,
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int fd, void *data __maybe_unused)
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{
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size_t ret;
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char *name;
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u32 pmu_num;
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u32 type;
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struct strbuf sb;
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ret = read(fd, &pmu_num, sizeof(pmu_num));
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if (ret != sizeof(pmu_num))
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return -1;
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if (ph->needs_swap)
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pmu_num = bswap_32(pmu_num);
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if (!pmu_num) {
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pr_debug("pmu mappings not available\n");
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return 0;
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}
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ph->env.nr_pmu_mappings = pmu_num;
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strbuf_init(&sb, 128);
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while (pmu_num) {
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if (read(fd, &type, sizeof(type)) != sizeof(type))
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goto error;
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if (ph->needs_swap)
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type = bswap_32(type);
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name = do_read_string(fd, ph);
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if (!name)
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goto error;
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strbuf_addf(&sb, "%u:%s", type, name);
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/* include a NULL character at the end */
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strbuf_add(&sb, "", 1);
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free(name);
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pmu_num--;
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}
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ph->env.pmu_mappings = strbuf_detach(&sb, NULL);
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return 0;
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error:
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strbuf_release(&sb);
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return -1;
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}
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struct feature_ops {
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int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
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void (*print)(struct perf_header *h, int fd, FILE *fp);
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@ -1745,10 +2041,11 @@ struct feature_ops {
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.process = process_##func }
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#define FEAT_OPF(n, func) \
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[n] = { .name = #n, .write = write_##func, .print = print_##func, \
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.full_only = true }
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.process = process_##func, .full_only = true }
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#define FEAT_OPA_R(n, func) \
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[n] = { .name = #n, .write = write_##func, .print = print_##func, \
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.read = read_##func }
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.read = read_##func, .process = process_##func, \
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.full_only = true }
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/* feature_ops not implemented: */
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#define print_tracing_data NULL
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@ -1757,20 +2054,20 @@ struct feature_ops {
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static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
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FEAT_OPP(HEADER_TRACING_DATA, tracing_data),
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FEAT_OPP(HEADER_BUILD_ID, build_id),
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FEAT_OPA(HEADER_HOSTNAME, hostname),
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FEAT_OPA(HEADER_OSRELEASE, osrelease),
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FEAT_OPA(HEADER_VERSION, version),
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FEAT_OPA(HEADER_ARCH, arch),
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FEAT_OPA(HEADER_NRCPUS, nrcpus),
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FEAT_OPA(HEADER_CPUDESC, cpudesc),
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FEAT_OPP(HEADER_HOSTNAME, hostname),
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FEAT_OPP(HEADER_OSRELEASE, osrelease),
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FEAT_OPP(HEADER_VERSION, version),
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FEAT_OPP(HEADER_ARCH, arch),
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FEAT_OPP(HEADER_NRCPUS, nrcpus),
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FEAT_OPP(HEADER_CPUDESC, cpudesc),
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FEAT_OPA_R(HEADER_CPUID, cpuid),
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FEAT_OPA(HEADER_TOTAL_MEM, total_mem),
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FEAT_OPP(HEADER_TOTAL_MEM, total_mem),
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FEAT_OPP(HEADER_EVENT_DESC, event_desc),
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FEAT_OPA(HEADER_CMDLINE, cmdline),
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FEAT_OPP(HEADER_CMDLINE, cmdline),
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FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
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FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
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FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
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FEAT_OPA(HEADER_PMU_MAPPINGS, pmu_mappings),
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FEAT_OPP(HEADER_PMU_MAPPINGS, pmu_mappings),
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};
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struct header_print_data {
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