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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2021-06-27 16:18:14 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-07-01 16:14:38 -0300 |
| commit | f645744c50806c0453b8d4a806c6347654035053 (patch) | |
| tree | 441f1dc782dd07032cf82562d5db84d33b62c457 /tools/perf/util | |
| parent | perf build: Install perf_dlfilter.h (diff) | |
| download | linux-dev-f645744c50806c0453b8d4a806c6347654035053.tar.xz linux-dev-f645744c50806c0453b8d4a806c6347654035053.zip | |
perf dlfilter: Add resolve_address() to perf_dlfilter_fns
Add a function, for use by dlfilters, to resolve addresses from branch
stacks or callchains.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210627131818.810-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/dlfilter.c | 29 | ||||
| -rw-r--r-- | tools/perf/util/perf_dlfilter.h | 7 |
2 files changed, 35 insertions, 1 deletions
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c index eaa3cea49178..4b03227541d3 100644 --- a/tools/perf/util/dlfilter.c +++ b/tools/perf/util/dlfilter.c @@ -149,10 +149,39 @@ static char **dlfilter__args(void *ctx, int *dlargc) return d->dlargv; } +static __s32 dlfilter__resolve_address(void *ctx, __u64 address, struct perf_dlfilter_al *d_al_p) +{ + struct dlfilter *d = (struct dlfilter *)ctx; + struct perf_dlfilter_al d_al; + struct addr_location al; + struct thread *thread; + __u32 sz; + + if (!d->ctx_valid || !d_al_p) + return -1; + + thread = get_thread(d); + if (!thread) + return -1; + + thread__find_symbol_fb(thread, d->sample->cpumode, address, &al); + + al_to_d_al(&al, &d_al); + + d_al.is_kernel_ip = machine__kernel_ip(d->machine, address); + + sz = d_al_p->size; + memcpy(d_al_p, &d_al, min((size_t)sz, sizeof(d_al))); + d_al_p->size = sz; + + return 0; +} + static const struct perf_dlfilter_fns perf_dlfilter_fns = { .resolve_ip = dlfilter__resolve_ip, .resolve_addr = dlfilter__resolve_addr, .args = dlfilter__args, + .resolve_address = dlfilter__resolve_address, }; static char *find_dlfilter(const char *file) diff --git a/tools/perf/util/perf_dlfilter.h b/tools/perf/util/perf_dlfilter.h index 35e03aa41a7f..dfd0f8482824 100644 --- a/tools/perf/util/perf_dlfilter.h +++ b/tools/perf/util/perf_dlfilter.h @@ -92,8 +92,13 @@ struct perf_dlfilter_fns { const struct perf_dlfilter_al *(*resolve_addr)(void *ctx); /* Return arguments from --dlarg option */ char **(*args)(void *ctx, int *dlargc); + /* + * Return information about address (al->size must be set before + * calling). Returns 0 on success, -1 otherwise. + */ + __s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al); /* Reserved */ - void *(*reserved[125])(void *); + void *(*reserved[124])(void *); }; /* |