Peter Zijlstra d33b9035e1 objtool: Improve reloc hash size guestimate ... Nathan reported that LLVM ThinLTO builds have a performance regression with commit 25cf0d8aa2 ("objtool: Rewrite hashtable sizing"). Sami was quick to note that this is due to their use of -ffunction-sections. As a result the .text section is small and basing the number of relocs off of that no longer works. Instead have read_sections() compute the sum of all SHF_EXECINSTR sections and use that. Fixes: 25cf0d8aa2 ("objtool: Rewrite hashtable sizing") Reported-by: Nathan Chancellor <nathan@kernel.org> Debugged-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lkml.kernel.org/r/YMJpGLuGNsGtA5JJ@hirez.programming.kicks-ass.net		2021-06-14 14:05:36 +02:00
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objtool	objtool: Improve reloc hash size guestimate	2021-06-14 14:05:36 +02:00