git: fa6d9e24f4d5 - stable/13 - linux(4): Microoptimize rt_sendsig(), convert signal mask once

The branch stable/13 has been updated by dchagin:

URL: https://cgit.FreeBSD.org/src/commit/?id=fa6d9e24f4d5352f0301801d72260fc6b14d7e3c

commit fa6d9e24f4d5352f0301801d72260fc6b14d7e3c
Author:     Dmitry Chagin <dchagin@FreeBSD.org>
AuthorDate: 2022-05-30 16:49:45 +0000
Commit:     Dmitry Chagin <dchagin@FreeBSD.org>
CommitDate: 2022-06-17 19:35:38 +0000

    linux(4): Microoptimize rt_sendsig(), convert signal mask once
    
    On amd64 Linux saves the thread signal mask in both contexts, in the machine
    dependent and in the machine independent. Both contexts are user accessible.
    Convert the mask once, then copy it.
    
    MFC after:              2 weeks
    
    (cherry picked from commit c30a767c6fd6d3f19e897fb800513e75175249b9)
---
 sys/amd64/linux/linux_sysvec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c
index 83aa646fee20..8d9557a5aebc 100644
--- a/sys/amd64/linux/linux_sysvec.c
+++ b/sys/amd64/linux/linux_sysvec.c
@@ -575,7 +575,7 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Save user context. */
 	bzero(&sf, sizeof(sf));
 	bsd_to_linux_sigset(mask, &sf.sf_uc.uc_sigmask);
-	bsd_to_linux_sigset(mask, &sf.sf_uc.uc_mcontext.sc_mask);
+	sf.sf_uc.uc_mcontext.sc_mask = sf.sf_uc.uc_sigmask;
 
 	sf.sf_uc.uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp);
 	sf.sf_uc.uc_stack.ss_size = td->td_sigstk.ss_size;