Ian Rogers 36e7748d33 perf tests: Fix data symbol test with LTO builds ... With LTO builds, although regular builds could also see this as all the code is in one file, the datasym workload can realize the buf1.reserved data is never accessed. The compiler moves the variable to bss and only keeps the data1 and data2 parts as separate variables. This causes the symbol check to fail in the test. Make the variable volatile to disable the more aggressive optimization. Rename the variable to make which buf1 in perf is being referred to. Before: $ perf test -vv "data symbol" 126: Test data symbol: --- start --- test child forked, pid 299808 perf does not have symbol 'buf1' perf is missing symbols - skipping test ---- end(-2) ---- 126: Test data symbol : Skip $ nm perf|grep buf1 0000000000a5fa40 b buf1.0 0000000000a5fa48 b buf1.1 After: $ nm perf|grep buf1 0000000000a53a00 d buf1 $ perf test -vv "data symbol"126: Test data symbol: --- start --- test child forked, pid 302166 a53a00-a53a39 l buf1 perf does have symbol 'buf1' Recording workload... Waiting for "perf record has started" message OK Cleaning up files... ---- end(0) ---- 126: Test data symbol : Ok Fixes: 3dfc01fe9d ("perf test: Add 'datasym' test workload") Signed-off-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20250226230109.314580-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>		2025-03-07 14:07:07 -08:00
..
brstack.c	perf test: Add 'brstack' test workload	2022-11-23 10:28:01 -03:00
Build	perf test: Add landlock workload	2024-07-31 16:12:46 -03:00
datasym.c	perf tests: Fix data symbol test with LTO builds	2025-03-07 14:07:07 -08:00
landlock.c	perf test: Remove duplicate word	2024-12-12 15:55:16 -03:00
leafloop.c	perf test: Make test_arm_callgraph_fp.sh more robust	2024-06-24 14:42:59 -07:00
noploop.c
sqrtloop.c	perf test: Add 'sqrtloop' test workload	2022-11-23 10:26:27 -03:00
thloop.c	perf test: Remove atomics from test_loop to avoid test failures	2023-11-27 10:21:06 -03:00