Messages in this thread | | | Date | Mon, 3 Jul 2023 12:35:15 +0200 | From | Andrew Jones <> | Subject | Re: [PATCH] riscv: optimize ELF relocation function in riscv |
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On Mon, Jul 03, 2023 at 11:32:12AM +0800, Amma Lee wrote: > The patch can optimize the running times of insmod command by modify ELF > relocation function. > In the 5.10 and latest kernel, when install the riscv ELF drivers which > contains multiple symbol table items to be relocated, kernel takes a lot > of time to execute the relocation. For example, we install a 3+MB driver > need 180+s. > We focus on the riscv architecture handle R_RISCV_HI20 and R_RISCV_LO20 > type items relocation function in the arch\riscv\kernel\module.c and > find that there are two-loops in the function. If we modify the begin > number in the second for-loops iteration, we could save significant time > for installation. We install the same 3+MB driver could just need 2s. > > Signed-off-by: Amma Lee <lixiaoyun@binary-semi.com> > --- > arch/riscv/kernel/module.c | 67 +++++++++++++++++++++++++++++++++++++++++++--- > 1 file changed, 64 insertions(+), 3 deletions(-) >
I guess this is a v3 of [1]? But there's no change log here to know what's different.
[1] 1683881513-18730-1-git-send-email-lixiaoyun@binary-semi.com
Thanks, drew
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