Josh Poimboeuf 4ed9d82bf5 objtool: Speed up SHT_GROUP reindexing ... After elf_update_group_sh_info() was introduced, a prototype version of "objtool klp diff" went from taking ~1s to several minutes, due to looping almost endlessly in elf_update_group_sh_info() while creating thousands of local symbols in a file with thousands of sections. Dramatically improve the performance by marking all symbols' correlated SHT_GROUP sections while reading the object. That way there's no need to search for it every time a symbol gets reindexed. Fixes: 2cb291596e ("objtool: Fix up st_info in COMDAT group section") Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Rong Xu <xur@google.com> Link: https://lkml.kernel.org/r/2a33e583c87e3283706f346f9d59aac20653b7fd.1746662991.git.jpoimboe@kernel.org		2025-05-14 13:09:02 +02:00
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objtool	objtool: Speed up SHT_GROUP reindexing	2025-05-14 13:09:02 +02:00