7fb10233 - selftests: cachestat: properly link in librt

Tue, 15 Aug 2023 15:56:10 +0000

selftests: cachestat: properly link in librtLibraries should be listed last on the compiler's command line, so thatthe linker can look for and find still unresolved symbols. The librtlibrary, required for the shm_* functions, was announced using CFLAGS,which puts the library *before* the source files, and fails compilationon my system:======================gcc -isystem /src/linux-selftests/usr/include -Wall -lrt test_cachestat.c -o /src/linux-selftests/kselftest/cachestat/test_cachestat/usr/bin/ld: /tmp/cceQWO3u.o: in function `test_cachestat_shmem':test_cachestat.c:(.text+0x890): undefined reference to `shm_open'/usr/bin/ld: test_cachestat.c:(.text+0x99c): undefined reference to `shm_unlink'collect2: error: ld returned 1 exit statusmake[4]: *** [../lib.mk:181: /src/linux-selftests/kselftest/cachestat/test_cachestat] Error 1======================Announce the library using the LDLIBS variable, which ensures the properordering on the command line.Signed-off-by: Andre Przywara Signed-off-by: Shuah Khan List of files: /linux-6.15/tools/testing/selftests/cachestat/Makefile

88537aac - selftests: add selftests for cachestat

Wed, 03 May 2023 01:36:08 +0000

selftests: add selftests for cachestatTest cachestat on a newly created file, /dev/ files, /proc/ files and adirectory. Also test on a shmem file (which can also be tested withhuge pages since tmpfs supports huge pages).[colin.i.king@gmail.com: fix spelling mistake "trucate" -> "truncate"] Link: https://lkml.kernel.org/r/20230505110855.2493457-1-colin.i.king@gmail.com[mpe@ellerman.id.au: avoid excessive stack allocation] Link: https://lkml.kernel.org/r/877ctfa6yv.fsf@mail.lhotseLink: https://lkml.kernel.org/r/20230503013608.2431726-4-nphamcs@gmail.comSigned-off-by: Nhat Pham Signed-off-by: Colin Ian King Signed-off-by: Michael Ellerman Acked-by: Johannes Weiner Cc: Brian Foster Cc: Matthew Wilcox (Oracle) Cc: Michael Kerrisk Cc: Colin Ian King Cc: Michael Ellerman Signed-off-by: Andrew Morton List of files: /linux-6.15/tools/testing/selftests/cachestat/Makefile

Changes in Makefile

7fb10233 - selftests: cachestat: properly link in librt

88537aac - selftests: add selftests for cachestat