Auto merge of #133792 - lqd:jemallocup, r=Mark-Simulacrum

switch `jemalloc-sys` back to `tikv-jemalloc-sys`, and update to 0.6.0

Some context:
- we used to use jemalloc bindings from https://github.com/gnzlbg/jemallocator, since #55238
- that crate was abandoned, picked up as a fork in https://github.com/tikv/jemallocator, so we switched to that in #83152.
- then they were able to publish to the original `jemalloc-sys` bindings crate, and `jemalloc-sys` and `tikv-jemalloc-sys` became the same thing -- so I switched back to the OG crate in #96790
- they're now having publishing problems again: I've been waiting for tikv/jemallocator#96 for the `jemalloc-sys` 0.6.0 update for a few months, but `tikv-jemalloc-sys` is already updated to 0.6.0.

A perf run showed some improvements, so this PR switches back to `tikv-jemalloc-sys` to update to 0.6.0.

Cargo.toml

@@ -31,8 +31,8 @@ directories = "5"
 # Copied from `compiler/rustc/Cargo.toml`.
 # But only for some targets, it fails for others. Rustc configures this in its CI, but we can't
 # easily use that since we support of-tree builds.
-[target.'cfg(any(target_os = "linux", target_os = "macos"))'.dependencies.jemalloc-sys]
-version = "0.5.0"
+[target.'cfg(any(target_os = "linux", target_os = "macos"))'.dependencies.tikv-jemalloc-sys]
+version = "0.6.0"
 features = ['unprefixed_malloc_on_supported_platforms']
 
 [target.'cfg(unix)'.dependencies]

src/bin/miri.rs

@@ -316,6 +316,8 @@ fn jemalloc_magic() {
     // See there for further comments.
     use std::os::raw::{c_int, c_void};
 
+    use tikv_jemalloc_sys as jemalloc_sys;
+
     #[used]
     static _F1: unsafe extern "C" fn(usize, usize) -> *mut c_void = jemalloc_sys::calloc;
     #[used]