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| author |   Peter Zijlstra <peterz@infradead.org> | 2021-06-11 10:28:17 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-18 11:43:09 +0200 |
| commit | 2f064a59a11ff9bc22e52e9678bc601404c7cb34 (patch) | |
| tree | acc246021cd9f158016247f00f238668963daed7 /fs/binfmt_elf.c | |
| parent | sched,arch: Remove unused TASK_STATE offsets (diff) | |
| download | linux-dev-2f064a59a11ff9bc22e52e9678bc601404c7cb34.tar.xz linux-dev-2f064a59a11ff9bc22e52e9678bc601404c7cb34.zip | |
sched: Change task_struct::state
Change the type and name of task_struct::state. Drop the volatile and
shrink it to an 'unsigned int'. Rename it in order to find all uses
such that we can use READ_ONCE/WRITE_ONCE as appropriate.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20210611082838.550736351@infradead.org
Diffstat (limited to 'fs/binfmt_elf.c')
| -rw-r--r-- | fs/binfmt_elf.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 187b3f2b9202..3d73cbb439fa 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1537,7 +1537,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p, { const struct cred *cred; unsigned int i, len; - + unsigned int state; + /* first copy the parameters from user space */ memset(psinfo, 0, sizeof(struct elf_prpsinfo)); @@ -1559,7 +1560,8 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p, psinfo->pr_pgrp = task_pgrp_vnr(p); psinfo->pr_sid = task_session_vnr(p); - i = p->state ? ffz(~p->state) + 1 : 0; + state = READ_ONCE(p->__state); + i = state ? ffz(~state) + 1 : 0; psinfo->pr_state = i; psinfo->pr_sname = (i > 5) ? '.' : "RSDTZW"[i]; psinfo->pr_zomb = psinfo->pr_sname == 'Z'; @@ -1571,7 +1573,7 @@ static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p, SET_GID(psinfo->pr_gid, from_kgid_munged(cred->user_ns, cred->gid)); rcu_read_unlock(); strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname)); - + return 0; } |