From cc26ffaa01f04cbe5c958df5532f3c23599e7a04 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Sun, 19 Feb 2023 01:28:44 -0800 Subject: perf stat: Hide runtime_stat runtime_stat is only shared for the sake of tests that don't care about its value. Move the definition into stat-shadow.c and have the tests also use the global version. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexandre Torgue Cc: Andrii Nakryiko Cc: Athira Rajeev Cc: Caleb Biggers Cc: Eduard Zingerman Cc: Florian Fischer Cc: Ingo Molnar Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Maxime Coquelin Cc: Namhyung Kim Cc: Perry Taylor Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sandipan Das Cc: Sean Christopherson Cc: Stephane Eranian Cc: Suzuki Poulouse Cc: Xing Zhengjun Cc: linux-arm-kernel@lists.infradead.org Cc: linux-stm32@st-md-mailman.stormreply.com Link: https://lore.kernel.org/r/20230219092848.639226-48-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index a792214d1af8..e9b5387161df 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -2074,8 +2074,7 @@ static void perf_sample__fprint_metric(struct perf_script *script, val = sample->period * evsel->scale; perf_stat__update_shadow_stats(evsel, val, - sample->cpu, - &rt_stat); + sample->cpu); evsel_script(evsel)->val = val; if (evsel_script(leader)->gnum == leader->core.nr_members) { for_each_group_member (ev2, leader) { @@ -2083,8 +2082,7 @@ static void perf_sample__fprint_metric(struct perf_script *script, evsel_script(ev2)->val, sample->cpu, &ctx, - NULL, - &rt_stat); + NULL); } evsel_script(leader)->gnum = 0; } -- cgit From aa0964e3ecebe92243bac30f9317117037adecb9 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Sun, 19 Feb 2023 01:28:48 -0800 Subject: perf stat: Remove saved_value/runtime_stat As saved_value/runtime_stat are only written to and not read, remove the associated logic and writes. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexandre Torgue Cc: Andrii Nakryiko Cc: Athira Rajeev Cc: Caleb Biggers Cc: Eduard Zingerman Cc: Florian Fischer Cc: Ingo Molnar Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Maxime Coquelin Cc: Namhyung Kim Cc: Perry Taylor Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sandipan Das Cc: Sean Christopherson Cc: Stephane Eranian Cc: Suzuki Poulouse Cc: Xing Zhengjun Cc: linux-arm-kernel@lists.infradead.org Cc: linux-stm32@st-md-mailman.stormreply.com Link: https://lore.kernel.org/r/20230219092848.639226-52-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index e9b5387161df..522226114263 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -2072,9 +2072,6 @@ static void perf_sample__fprint_metric(struct perf_script *script, if (evsel_script(leader)->gnum++ == 0) perf_stat__reset_shadow_stats(); val = sample->period * evsel->scale; - perf_stat__update_shadow_stats(evsel, - val, - sample->cpu); evsel_script(evsel)->val = val; if (evsel_script(leader)->gnum == leader->core.nr_members) { for_each_group_member (ev2, leader) { @@ -2792,8 +2789,6 @@ static int __cmd_script(struct perf_script *script) signal(SIGINT, sig_handler); - perf_stat__init_shadow_stats(); - /* override event processing functions */ if (script->show_task_events) { script->tool.comm = process_comm_event; -- cgit From 80c3a7d9f20401169283b5670dbb8d7ac07a1d55 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 15 Mar 2023 10:43:21 +0200 Subject: perf script: Fix Python support when no libtraceevent Python scripting can be used without libtraceevent. In particular, scripting for Intel PT does not use tracepoints, and so does not need libtraceevent support. Alter the build and employ conditional compilation to allow Python scripting without libtraceevent. Example: Before: $ ldd `which perf` | grep -i python $ ldd `which perf` | grep -i libtraceevent $ perf record -e intel_pt//u uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.031 MB perf.data ] $ perf script intel-pt-events.py |& head -3 Error: Couldn't find script `intel-pt-events.py' See perf script -l for available scripts. After: $ ldd `which perf` | grep -i python libpython3.10.so.1.0 => /lib/x86_64-linux-gnu/libpython3.10.so.1.0 (0x00007f4bac400000) $ ldd `which perf` | grep -i libtraceevent $ perf script intel-pt-events.py | head Intel PT Branch Trace, Power Events, Event Trace and PTWRITE Switch In 8021/8021 [000] 11234.097713404 0/0 perf-exec 8021/8021 [000] 11234.098041726 psb offset: 0x0 0 [unknown] ([unknown]) perf-exec 8021/8021 [000] 11234.098041726 cbr 45 freq: 4505 MHz (161%) 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098082170 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098082379 branches:uH tr end 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098083629 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083629 branches:uH call 7f3a8b9422b3 _start+0x3 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 7f3a8b943050 _dl_start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083837 branches:uH tr end 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) IPC: 0.01 (9/938) uname 8021/8021 [000] 11234.098084670 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) Fixes: 378ef0f5d9d7f465 ("perf build: Use libtraceevent from the system") Signed-off-by: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20230315084321.14563-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 522226114263..976f8bfe099c 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -2313,8 +2313,8 @@ static void setup_scripting(void) { #ifdef HAVE_LIBTRACEEVENT setup_perl_scripting(); - setup_python_scripting(); #endif + setup_python_scripting(); } static int flush_scripting(void) -- cgit From 34f576c95d1bd1be3f123c2d1f3db084e5e72583 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 20 Mar 2023 20:35:16 +0200 Subject: perf intel-pt: Add event type names UINTR and UIRET UINTR and UIRET are listed in table 32-50 "CFE Packet Type and Vector Fields Details" in the Intel Processor Trace chapter of The Intel SDM Volume 3 version 078. The codes are for "User interrupt delivered" and "Exiting from user interrupt routine" respectively. Signed-off-by: Adrian Hunter Acked-by: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20230320183517.15099-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 976f8bfe099c..c9296d8b33c0 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1906,7 +1906,7 @@ static int perf_sample__fprintf_synth_evt(struct perf_sample *sample, FILE *fp) struct perf_synth_intel_evt *data = perf_sample__synth_ptr(sample); const char *cfe[32] = {NULL, "INTR", "IRET", "SMI", "RSM", "SIPI", "INIT", "VMENTRY", "VMEXIT", "VMEXIT_INTR", - "SHUTDOWN"}; + "SHUTDOWN", NULL, "UINTR", "UIRET"}; const char *evd[64] = {"PFA", "VMXQ", "VMXR"}; const char *s; int len, i; -- cgit From 63df0e4bc368adbd12ed70ed4789d8d52d65661d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 20 Mar 2023 14:22:35 -0700 Subject: perf map: Add accessor for dso Later changes will add reference count checking for struct map, with dso being the most frequently accessed variable. Add an accessor so that the reference count check is only necessary in one place. Additional changes: - add a dso variable to avoid repeated map__dso calls. - in builtin-mem.c dump_raw_samples, code only partially tested for dso == NULL. Make the possibility of NULL consistent. - in thread.c thread__memcpy fix use of spaces and use tabs. Committer notes: Did missing conversions on these files: tools/perf/arch/powerpc/util/skip-callchain-idx.c tools/perf/arch/powerpc/util/sym-handling.c tools/perf/ui/browsers/hists.c tools/perf/ui/gtk/annotate.c tools/perf/util/cs-etm.c tools/perf/util/thread.c tools/perf/util/unwind-libunwind-local.c tools/perf/util/unwind-libunwind.c Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Bayduraev Cc: Andi Kleen Cc: Andrew Morton Cc: Andy Shevchenko Cc: Darren Hart Cc: Davidlohr Bueso Cc: Dmitriy Vyukov Cc: Eric Dumazet Cc: German Gomez Cc: Hao Luo Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Miaoqian Lin Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Shunsuke Nakamura Cc: Song Liu Cc: Stephane Eranian Cc: Stephen Brennan Cc: Steven Rostedt (VMware) Cc: Thomas Gleixner Cc: Thomas Richter Cc: Yury Norov Link: https://lore.kernel.org/r/20230320212248.1175731-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index c9296d8b33c0..27fd9c203600 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1011,11 +1011,11 @@ static int perf_sample__fprintf_brstackoff(struct perf_sample *sample, to = entries[i].to; if (thread__find_map_fb(thread, sample->cpumode, from, &alf) && - !alf.map->dso->adjust_symbols) + !map__dso(alf.map)->adjust_symbols) from = map__map_ip(alf.map, from); if (thread__find_map_fb(thread, sample->cpumode, to, &alt) && - !alt.map->dso->adjust_symbols) + !map__dso(alt.map)->adjust_symbols) to = map__map_ip(alt.map, to); printed += fprintf(fp, " 0x%"PRIx64, from); @@ -1044,6 +1044,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, long offset, len; struct addr_location al; bool kernel; + struct dso *dso; if (!start || !end) return 0; @@ -1074,11 +1075,12 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, return 0; } - if (!thread__find_map(thread, *cpumode, start, &al) || !al.map->dso) { + dso = map__dso(al.map); + if (!thread__find_map(thread, *cpumode, start, &al) || !dso) { pr_debug("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end); return 0; } - if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR) { + if (dso->data.status == DSO_DATA_STATUS_ERROR) { pr_debug("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end); return 0; } @@ -1087,10 +1089,10 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, map__load(al.map); offset = al.map->map_ip(al.map, start); - len = dso__data_read_offset(al.map->dso, machine, offset, (u8 *)buffer, + len = dso__data_read_offset(dso, machine, offset, (u8 *)buffer, end - start + MAXINSN); - *is64bit = al.map->dso->is_64_bit; + *is64bit = dso->is_64_bit; if (len <= 0) pr_debug("\tcannot fetch code for block at %" PRIx64 "-%" PRIx64 "\n", start, end); @@ -1104,10 +1106,11 @@ static int map__fprintf_srccode(struct map *map, u64 addr, FILE *fp, struct srcc unsigned line; int len; char *srccode; + struct dso *dso = map__dso(map); - if (!map || !map->dso) + if (!map || !dso) return 0; - srcfile = get_srcline_split(map->dso, + srcfile = get_srcline_split(dso, map__rip_2objdump(map, addr), &line); if (!srcfile) -- cgit From e5116f46d44b72ede59a6923829f68a8b8f84e76 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 20 Mar 2023 14:22:36 -0700 Subject: perf map: Add accessor for start and end Later changes will add reference count checking for struct map, start and end are frequently accessed variables. Add an accessor so that the reference count check is only necessary in one place. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Bayduraev Cc: Andi Kleen Cc: Andrew Morton Cc: Andy Shevchenko Cc: Darren Hart Cc: Davidlohr Bueso Cc: Dmitriy Vyukov Cc: Eric Dumazet Cc: German Gomez Cc: Hao Luo Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Miaoqian Lin Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Shunsuke Nakamura Cc: Song Liu Cc: Stephane Eranian Cc: Stephen Brennan Cc: Steven Rostedt (VMware) Cc: Thomas Gleixner Cc: Thomas Richter Cc: Yury Norov Link: https://lore.kernel.org/r/20230320212248.1175731-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 27fd9c203600..1d078106abc4 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1209,7 +1209,7 @@ static int ip__fprintf_sym(uint64_t addr, struct thread *thread, if (al.addr < al.sym->end) off = al.addr - al.sym->start; else - off = al.addr - al.map->start - al.sym->start; + off = al.addr - map__start(al.map) - al.sym->start; printed += fprintf(fp, "\t%s", al.sym->name); if (off) printed += fprintf(fp, "%+d", off); -- cgit From 0e6aa013bbc545f3ac04ba79c884466e47136d5d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 4 Apr 2023 13:59:43 -0700 Subject: perf map: Rename map_ip() and unmap_ip() Add dso to match comment. This avoids a naming conflict with later added accessor functions for variables in struct map. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Bayduraev Cc: Andi Kleen Cc: Andrew Morton Cc: Andy Shevchenko Cc: Darren Hart Cc: Davidlohr Bueso Cc: Dmitriy Vyukov Cc: Eric Dumazet Cc: German Gomez Cc: Hao Luo Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Miaoqian Lin Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Shunsuke Nakamura Cc: Song Liu Cc: Stephane Eranian Cc: Stephen Brennan Cc: Steven Rostedt (VMware) Cc: Thomas Gleixner Cc: Thomas Richter Cc: Yury Norov Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 1d078106abc4..af0a69c7f41f 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1012,11 +1012,11 @@ static int perf_sample__fprintf_brstackoff(struct perf_sample *sample, if (thread__find_map_fb(thread, sample->cpumode, from, &alf) && !map__dso(alf.map)->adjust_symbols) - from = map__map_ip(alf.map, from); + from = map__dso_map_ip(alf.map, from); if (thread__find_map_fb(thread, sample->cpumode, to, &alt) && !map__dso(alt.map)->adjust_symbols) - to = map__map_ip(alt.map, to); + to = map__dso_map_ip(alt.map, to); printed += fprintf(fp, " 0x%"PRIx64, from); if (PRINT_FIELD(DSO)) { -- cgit From 78a1f7cd9000d5d633268a2acb2d9b62d41a2f2c Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 4 Apr 2023 13:59:44 -0700 Subject: perf map: Add helper for ->map_ip() and ->unmap_ip() Later changes will add reference count checking for struct map, add a helper function to invoke the map_ip and unmap_ip function pointers. The helper allows the reference count check to be in fewer places. Committer notes: Add missing conversions to: tools/perf/util/map.c tools/perf/util/cs-etm.c tools/perf/util/annotate.c tools/perf/arch/powerpc/util/sym-handling.c tools/perf/arch/s390/annotate/instructions.c Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexey Bayduraev Cc: Andi Kleen Cc: Andrew Morton Cc: Andy Shevchenko Cc: Darren Hart Cc: Davidlohr Bueso Cc: Dmitriy Vyukov Cc: Eric Dumazet Cc: German Gomez Cc: Hao Luo Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Miaoqian Lin Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Shunsuke Nakamura Cc: Song Liu Cc: Stephane Eranian Cc: Stephen Brennan Cc: Steven Rostedt (VMware) Cc: Thomas Gleixner Cc: Thomas Richter Cc: Yury Norov Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index af0a69c7f41f..8fba247b798c 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1088,7 +1088,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, /* Load maps to ensure dso->is_64_bit has been updated */ map__load(al.map); - offset = al.map->map_ip(al.map, start); + offset = map__map_ip(al.map, start); len = dso__data_read_offset(dso, machine, offset, (u8 *)buffer, end - start + MAXINSN); -- cgit From 3ad1be6faef9a482c3098928220fcafaa51a1283 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 18 Apr 2023 12:46:02 -0300 Subject: perf dso: Fix use before NULL check introduced by map__dso() introduction James Clark noticed that the recent 63df0e4bc368adbd ("perf map: Add accessor for dso") patch accessed map->dso before the 'map' variable was NULL checked, which is a change in logic that leads to segmentation faults, so comb thru that patch to fix similar cases. Fixes: 63df0e4bc368adbd ("perf map: Add accessor for dso") Acked-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Will Deacon Link: https://lore.kernel.org/lkml/ZD68RYCVT8hqPuxr@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 8fba247b798c..006f522d0e7f 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1075,8 +1075,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, return 0; } - dso = map__dso(al.map); - if (!thread__find_map(thread, *cpumode, start, &al) || !dso) { + if (!thread__find_map(thread, *cpumode, start, &al) || (dso = map__dso(al.map)) == NULL) { pr_debug("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end); return 0; } @@ -1106,9 +1105,9 @@ static int map__fprintf_srccode(struct map *map, u64 addr, FILE *fp, struct srcc unsigned line; int len; char *srccode; - struct dso *dso = map__dso(map); + struct dso *dso; - if (!map || !dso) + if (!map || (dso = map__dso(map)) == NULL) return 0; srcfile = get_srcline_split(dso, map__rip_2objdump(map, addr), -- cgit From 2fe6575924612f1014a0539ab3053b106aded926 Mon Sep 17 00:00:00 2001 From: Sandipan Das Date: Fri, 5 May 2023 15:32:53 +0530 Subject: perf script: Skip aggregation for stat events The script command does not support aggregation modes by itself although that can be achieved using post-processing scripts. Because of this, it does not allocate memory for aggregated event values. Upon running perf stat record, the aggregation mode is set in the perf data file. If the mode is AGGR_GLOBAL, the aggregated event values are accessed and this leads to a segmentation fault since these were never allocated to begin with. Set the mode to AGGR_NONE explicitly to avoid this. E.g. $ perf stat record -e cycles true $ perf script Before: Segmentation fault (core dumped) After: CPU THREAD VAL ENA RUN TIME EVENT -1 231919 162831 362069 362069 935289 cycles:u Fixes: 8b76a3188b85724f ("perf stat: Remove unused perf_counts.aggr field") Signed-off-by: Sandipan Das Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ananth Narayan Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Nick Terrell Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: stable@vger.kernel.org # v6.2+ Link: https://lore.kernel.org/r/83d6c6c05c54bf00c5a9df32ac160718efca0c7a.1683280603.git.sandipan.das@amd.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools/perf/builtin-script.c') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 006f522d0e7f..c57be48d65bb 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -3647,6 +3647,13 @@ static int process_stat_config_event(struct perf_session *session __maybe_unused union perf_event *event) { perf_event__read_stat_config(&stat_config, &event->stat_config); + + /* + * Aggregation modes are not used since post-processing scripts are + * supposed to take care of such requirements + */ + stat_config.aggr_mode = AGGR_NONE; + return 0; } -- cgit