BMC/Intel-BMC/linux.git/tools/perf/tests/vmlinux-kallsyms.c, branch master

perf tools: Including missing inttypes.h header

2017-04-19T16:01:46+00:00

Needed to use the PRI[xu](32,64) formatting macros. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-wkbho8kaw24q67dd11q0j39f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf utils: Check verbose flag properly

2017-02-20T14:35:54+00:00

It now can have negative value to suppress the message entirely. So it needs to check it being positive. Signed-off-by: Namhyung Kim Cc: Jiri Olsa Cc: Peter Zijlstra Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170217081742.17417-3-namhyung@kernel.org [ Adjust fuzz on tools/perf/util/pmu.c, add > 0 checks in many other places ] Signed-off-by: Arnaldo Carvalho de Melo

perf symbols: Remove symbol_filter_t machinery

2016-09-05T14:14:50+00:00

We're not using it anymore, few users were, but we really could do without it, simplify lots of functions by removing it. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test vmlinux: Remove dead symbol_filter_t code

2016-09-05T14:14:50+00:00

We don't need to initialize that area as we're not using it afterwards, leftover, ditch it. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-jb2un8buy4rqawz73mcdm1sn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test vmlinux: Tolerate symbol aliases

2016-09-01T15:42:23+00:00

The algorithms used to prune aliases in symbols__fixup_duplicate() uses information available on ELF symtabs that are not present on /proc/kallsyms, so it picks different aliases as "best" for vmlinux and kallsyms. We could probably improve a bit this by having a list of aliases for the "best" symbols picked, instead of throwing this info, but that is left for when we find a real need. With this, 'perf test vmlinux' passes: # perf test -F 1 1: vmlinux symtab matches kallsyms: Ok # When we ask for verbose mode, we can see those warning: # perf test -F -v 1 1: vmlinux symtab matches kallsyms: --- start --- Looking at the vmlinux_path (8 entries long) Using /lib/modules/4.8.0-rc4+/build/vmlinux for symbols WARN: 0xffffffffb7001000: diff name v: xen_hypercall_set_trap_table k: hypercall_page WARN: 0xffffffffb7077970: diff end addr for aesni_gcm_dec v: 0xffffffffb707a2f2 k: 0xffffffffb7077a02 WARN: 0xffffffffb707a300: diff end addr for aesni_gcm_enc v: 0xffffffffb707cc03 k: 0xffffffffb707a392 WARN: 0xffffffffb707f950: diff end addr for aesni_gcm_enc_avx_gen2 v: 0xffffffffb7084ef6 k: 0xffffffffb707f9c3 WARN: 0xffffffffb7084f00: diff end addr for aesni_gcm_dec_avx_gen2 v: 0xffffffffb708a691 k: 0xffffffffb7084f73 WARN: 0xffffffffb708aa10: diff end addr for aesni_gcm_enc_avx_gen4 v: 0xffffffffb708f844 k: 0xffffffffb708aa83 WARN: 0xffffffffb708f850: diff end addr for aesni_gcm_dec_avx_gen4 v: 0xffffffffb709486f k: 0xffffffffb708f8c3 WARN: 0xffffffffb71a6e50: diff name v: perf_pmu_commit_txn.part.98 k: perf_pmu_cancel_txn.part.97 WARN: 0xffffffffb752e480: diff name v: wakeup_expire_count_show.part.5 k: wakeup_active_count_show.part.7 WARN: 0xffffffffb76e8d00: diff name v: phys_switch_id_show.part.11 k: phys_port_name_show.part.12 WARN: Maps only in vmlinux: ffffffffb7d7d000-ffffffffb7eeaac8 117d000 [kernel].init.text ffffffffb7eeaac8-ffffffffc03ad000 12eaac8 [kernel].exit.text ---- end ---- vmlinux symtab matches kallsyms: Ok # Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-6v5w1k8rpx4ggczlkw730vt0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test vmlinux: Avoid printing headers for empty lists

2016-09-01T15:42:23+00:00

Before: # perf test -F -v 1 1: vmlinux symtab matches kallsyms: --- start --- WARN: Maps only in vmlinux: ffffffffb7d7d000-ffffffffb7eeaac8 117d000 [kernel].init.text ffffffffb7eeaac8-ffffffffc03ad000 12eaac8 [kernel].exit.text WARN: Maps in vmlinux with a different name in kallsyms: WARN: Maps only in kallsyms: ---- end ---- vmlinux symtab matches kallsyms: Ok # The two last WARN lines are now suppressed, since there are no such cases detected. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-9ww8uvzl682ykaw8ht1tozlr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test vmlinux: Clarify which -v lines are errors or warning

2016-09-01T15:42:22+00:00

When the 'perf test -v vmlinux' test fails, it is not clear which of the lines are errors or warnings, clarify that adding ERR/WARN prefixes: # perf test -F -v 1 1: vmlinux symtab matches kallsyms : --- start --- Looking at the vmlinux_path (8 entries long) Using /lib/modules/4.8.0-rc4+/build/vmlinux for symbols ERR : 0xffffffffb7001000: diff name v: xen_hypercall_set_trap_table k: hypercall_page WARN: 0xffffffffb7077970: diff end addr for aesni_gcm_dec v: 0xffffffffb707a2f2 k: 0xffffffffb7077a02 WARN: 0xffffffffb707a300: diff end addr for aesni_gcm_enc v: 0xffffffffb707cc03 k: 0xffffffffb707a392 WARN: 0xffffffffb707f950: diff end addr for aesni_gcm_enc_avx_gen2 v: 0xffffffffb7084ef6 k: 0xffffffffb707f9c3 WARN: 0xffffffffb7084f00: diff end addr for aesni_gcm_dec_avx_gen2 v: 0xffffffffb708a691 k: 0xffffffffb7084f73 WARN: 0xffffffffb708aa10: diff end addr for aesni_gcm_enc_avx_gen4 v: 0xffffffffb708f844 k: 0xffffffffb708aa83 WARN: 0xffffffffb708f850: diff end addr for aesni_gcm_dec_avx_gen4 v: 0xffffffffb709486f k: 0xffffffffb708f8c3 ERR : 0xffffffffb71a6e50: diff name v: perf_pmu_commit_txn.part.98 k: perf_pmu_cancel_txn.part.97 ERR : 0xffffffffb752e480: diff name v: wakeup_expire_count_show.part.5 k: wakeup_active_count_show.part.7 ERR : 0xffffffffb76e8d00: diff name v: phys_switch_id_show.part.11 k: phys_port_name_show.part.12 WARN: Maps only in vmlinux: ffffffffb7d7d000-ffffffffb7eeaac8 117d000 [kernel].init.text ffffffffb7eeaac8-ffffffffc03ad000 12eaac8 [kernel].exit.text WARN: Maps in vmlinux with a different name in kallsyms: WARN: Maps only in kallsyms: ---- end ---- vmlinux symtab matches kallsyms: FAILED! # Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-n5ml8m7y9x8kzvxt09ipku88@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add missing verbose output explaining the reason for failure

2016-04-19T15:39:36+00:00

One of the branches leading to an error had no debug message emitted, fix it, the new lines are: # perf test -v kallsyms 0xffffffff81001000: diff name v: xen_hypercall_set_trap_table k: hypercall_page 0xffffffff810691f0: diff name v: try_to_free_pud_page k: try_to_free_pmd_page 0xffffffff8150bb20: diff name v: wakeup_expire_count_show.part.5 k: wakeup_active_count_show.part.7 0xffffffff816bc7f0: diff name v: phys_switch_id_show.part.11 k: phys_port_name_show.part.12 0xffffffff817bbb90: diff name v: __do_softirq k: __softirqentry_text_start This in turn exercises another bug, still under investigation, because those aliases _are_ in kallsyms, with the same name... Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Fixes: ab414dcda8fa ("perf test: Fixup aliases checking in the 'vmlinux matches kallsyms' test") Link: http://lkml.kernel.org/n/tip-5fhea7a54a54gsmagu9obpr4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Ignore kcore files in the "vmlinux matches kallsyms" test

2016-04-19T15:39:35+00:00

Before: # perf test -v kallsyms Maps only in vmlinux: ffffffff81d5e000-ffffffff81ec3ac8 115e000 [kernel].init.text ffffffff81ec3ac8-ffffffffa0000000 12c3ac8 [kernel].exit.text ffffffffa0000000-ffffffffa000c000 0 [fjes] ffffffffa000c000-ffffffffa0017000 0 [video] ffffffffa0017000-ffffffffa001c000 0 [grace] ffffffffa0a7f000-ffffffffa0ba5000 0 [xfs] ffffffffa0ba5000-ffffffffffffffff 0 [veth] Maps in vmlinux with a different name in kallsyms: Maps only in kallsyms: ffff880000100000-ffff88001000b000 80000103000 [kernel.kallsyms] ffff88001000b000-ffff880100000000 8001000e000 [kernel.kallsyms] ffff880100000000-ffffc90000000000 80100003000 [kernel.kallsyms] ffffffffa0000000-ffffffffff600000 7fffa0003000 [kernel.kallsyms] ffffffffff600000-ffffffffffffffff 7fffff603000 [kernel.kallsyms] test child finished with -1 ---- end ---- vmlinux symtab matches kallsyms: FAILED! # After: # perf test -v 1 1: vmlinux symtab matches kallsyms : --- start --- test child forked, pid 7058 Looking at the vmlinux_path (8 entries long) Using /lib/modules/4.6.0-rc1+/build/vmlinux for symbols 0xffffffff81076870: diff end addr for aesni_gcm_dec v: 0xffffffff810791f2 k: 0xffffffff81076902 0xffffffff81079200: diff end addr for aesni_gcm_enc v: 0xffffffff8107bb03 k: 0xffffffff81079292 0xffffffff8107e8d0: diff end addr for aesni_gcm_enc_avx_gen2 v: 0xffffffff81083e76 k: 0xffffffff8107e943 0xffffffff81083e80: diff end addr for aesni_gcm_dec_avx_gen2 v: 0xffffffff81089611 k: 0xffffffff81083ef3 0xffffffff81089990: diff end addr for aesni_gcm_enc_avx_gen4 v: 0xffffffff8108e7c4 k: 0xffffffff81089a03 0xffffffff8108e7d0: diff end addr for aesni_gcm_dec_avx_gen4 v: 0xffffffff810937ef k: 0xffffffff8108e843 Maps only in vmlinux: ffffffff81d5e000-ffffffff81ec3ac8 115e000 [kernel].init.text ffffffff81ec3ac8-ffffffffa0000000 12c3ac8 [kernel].exit.text Maps in vmlinux with a different name in kallsyms: Maps only in kallsyms: test child finished with -1 ---- end ---- vmlinux symtab matches kallsyms: FAILED! # Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Fixes: 8e0cf965f95e ("perf symbols: Add support for reading from /proc/kcore") Link: http://lkml.kernel.org/n/tip-n6vrwt9t89w8k769y349govx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fixup aliases checking in the 'vmlinux matches kallsyms' test

2016-01-26T14:52:52+00:00

There are cases where looking at just the next and prev entries is not enough, like with: $ readelf -sW /usr/lib/debug/lib/modules/4.3.3-301.fc23.x86_64/vmlinux | grep ffffffff81065ec0 4979: ffffffff81065ec0 53 FUNC LOCAL DEFAULT 1 try_to_free_pud_page 4980: ffffffff81065ec0 53 FUNC LOCAL DEFAULT 1 try_to_free_pte_page 4981: ffffffff81065ec0 53 FUNC LOCAL DEFAULT 1 try_to_free_pmd_page So just search by name to see if the symbol is in kallsyms. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-jj1vlljg7ol4i713l60rt5ai@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo