[PATCH RFC 10/11] perf dlfilter: Add attr() to perf_dlfilter_fns
From: Adrian Hunter <adrian.hunter@intel.com>
Date: 2021-06-21 15:05:47
Also in:
lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
Add a function, for use by dlfilters, to return the perf_event_attr structure. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- tools/perf/Documentation/perf-dlfilter.txt | 5 ++++- tools/perf/util/dlfilter.c | 11 +++++++++++ tools/perf/util/perf_dlfilter.h | 4 +++- 3 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-dlfilter.txt b/tools/perf/Documentation/perf-dlfilter.txt
index b6f958983584..d37913343449 100644
--- a/tools/perf/Documentation/perf-dlfilter.txt
+++ b/tools/perf/Documentation/perf-dlfilter.txt@@ -112,7 +112,8 @@ struct perf_dlfilter_fns { __s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al); const __u8 *(*insn)(void *ctx, __u32 *length); const char *(*srcline)(void *ctx, __u32 *line_number); - void *(*reserved[123])(void *); + struct perf_event_attr *(*attr)(void *ctx); + void *(*reserved[122])(void *); }; ----
@@ -127,6 +128,8 @@ before calling. Returns 0 on success, -1 otherwise. 'srcline' return source file name and line number. +'attr' returns perf_event_attr, refer <linux/perf_event.h>. + The perf_dlfilter_al structure ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c
index d71b0c97d1eb..2e89f322ff60 100644
--- a/tools/perf/util/dlfilter.c
+++ b/tools/perf/util/dlfilter.c@@ -217,12 +217,23 @@ static const char *dlfilter__srcline(void *ctx, __u32 *line_no) return srcfile; } +static struct perf_event_attr *dlfilter__attr(void *ctx) +{ + struct dlfilter *d = (struct dlfilter *)ctx; + + if (!d->ctx_valid) + return NULL; + + return &d->evsel->core.attr; +} + static const struct perf_dlfilter_fns perf_dlfilter_fns = { .resolve_ip = dlfilter__resolve_ip, .resolve_addr = dlfilter__resolve_addr, .resolve_address = dlfilter__resolve_address, .insn = dlfilter__insn, .srcline = dlfilter__srcline, + .attr = dlfilter__attr, }; #define CHECK_FLAG(x) BUILD_BUG_ON((u64)PERF_DLFILTER_FLAG_ ## x != (u64)PERF_IP_FLAG_ ## x)
diff --git a/tools/perf/util/perf_dlfilter.h b/tools/perf/util/perf_dlfilter.h
index a91e314ba24a..e2cdf416b22e 100644
--- a/tools/perf/util/perf_dlfilter.h
+++ b/tools/perf/util/perf_dlfilter.h@@ -99,8 +99,10 @@ struct perf_dlfilter_fns { const __u8 *(*insn)(void *ctx, __u32 *length); /* Return source file name and line number */ const char *(*srcline)(void *ctx, __u32 *line_number); + /* Return perf_event_attr, refer <linux/perf_event.h> */ + struct perf_event_attr *(*attr)(void *ctx); /* Reserved */ - void *(*reserved[123])(void *); + void *(*reserved[122])(void *); }; /*
--
2.17.1